diff --git a/docs/reference/class_drivers.rst b/docs/reference/class_drivers.rst new file mode 100644 index 0000000000..3ac0d8d4e8 --- /dev/null +++ b/docs/reference/class_drivers.rst @@ -0,0 +1,316 @@ +*************** +Class Drivers +*************** + +USB Class Drivers implement specific USB device classes (CDC, HID, MSC, MIDI, Audio, etc.) and are the main interface between the USB core and application code. + +MIDI 2.0 Device Driver +======================= + +Overview +-------- + +The MIDI 2.0 Device driver enables TinyUSB to act as a USB MIDI 2.0 device. It implements both Alt Setting 0 (MIDI 1.0 fallback) and Alt Setting 1 (native UMP) as required by the USB-MIDI 2.0 specification. + +**Key Features:** + +- **Dual Alt Settings**: Alt 0 (MIDI 1.0) and Alt 1 (UMP native) per USB-MIDI 2.0 spec +- **Protocol Negotiation**: Endpoint Discovery, Config Request/Notify, Function Block Discovery +- **Group Terminal Block**: Served via GET_DESCRIPTOR automatically +- **Atomic UMP Framing**: Read/write with correct message boundaries +- **Memory Safe**: No dynamic allocation, static instances + +Configuration +------------- + +Enable MIDI 2.0 Device support in ``tusb_config.h``: + +.. code-block:: c + + #define CFG_TUD_ENABLED 1 + #define CFG_TUD_MIDI2 1 + +Optional configuration: + +.. code-block:: c + + #define CFG_TUD_MIDI2_TX_BUFSIZE 256 + #define CFG_TUD_MIDI2_RX_BUFSIZE 256 + #define CFG_TUD_MIDI2_TX_EPSIZE 64 + #define CFG_TUD_MIDI2_RX_EPSIZE 64 + #define CFG_TUD_MIDI2_NUM_GROUPS 1 // 1..16 + #define CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS 1 // 1..32 + #define CFG_TUD_MIDI2_EP_NAME "TinyUSB MIDI 2.0" + #define CFG_TUD_MIDI2_PRODUCT_ID "TinyUSB-MIDI2" + +Public API +---------- + +Query Functions +^^^^^^^^^^^^^^^ + +.. code-block:: c + + bool tud_midi2_mounted(void); + uint32_t tud_midi2_available(void); + uint8_t tud_midi2_alt_setting(void); + bool tud_midi2_negotiated(void); + uint8_t tud_midi2_protocol(void); + +I/O Functions +^^^^^^^^^^^^^ + +.. code-block:: c + + uint32_t tud_midi2_ump_read(uint32_t* words, uint32_t max_words); + uint32_t tud_midi2_ump_write(const uint32_t* words, uint32_t count); + bool tud_midi2_packet_read(uint8_t packet[4]); + bool tud_midi2_packet_write(const uint8_t packet[4]); + +Callbacks +^^^^^^^^^ + +.. code-block:: c + + void tud_midi2_rx_cb(uint8_t itf); + void tud_midi2_set_itf_cb(uint8_t itf, uint8_t alt); + bool tud_midi2_get_req_itf_cb(uint8_t rhport, const tusb_control_request_t* request); + +MIDI 2.0 Host Driver +===================== + +Overview +-------- + +The MIDI 2.0 Host driver enables TinyUSB to enumerate and communicate with USB MIDI 2.0 devices. It implements the USB MIDI 2.0 specification, supporting both MIDI 1.0 legacy devices and modern MIDI 2.0 devices with UMP (Universal MIDI Packet) protocol. + +**Key Features:** + +- **Reactive Architecture**: Auto-detects Alt Setting 1 (MIDI 2.0) capability during enumeration +- **Auto-Selection**: Automatically selects the highest available protocol and issues SET_INTERFACE to activate Alt Setting 1 when MIDI 2.0 is detected +- **Transparent Stream Messages**: All data (UMP packets + Stream Messages) flow through callbacks +- **Memory Safe**: No dynamic allocation, fixed-size instances per device + +Configuration +------------- + +Enable MIDI 2.0 Host support in ``tusb_config.h``: + +.. code-block:: c + + #define CFG_TUH_ENABLED 1 + #define CFG_TUH_MIDI2 4 // Number of MIDI 2.0 devices to support + +Optional buffer configuration: + +.. code-block:: c + + #define CFG_TUH_MIDI2_RX_BUFSIZE (4 * TUH_EPSIZE_BULK_MAX) + #define CFG_TUH_MIDI2_TX_BUFSIZE (4 * TUH_EPSIZE_BULK_MAX) + +Enumeration Lifecycle +--------------------- + +When a MIDI 2.0 device is connected, the host stack invokes callbacks in this order: + +.. code-block:: none + + Device Connected + | + [Host detects Alt 0 and Alt 1 descriptors] + | + tuh_midi2_descriptor_cb() <- Device detected, NOT yet ready + | + [Auto-select highest protocol] + | + tuh_midi2_mount_cb() <- Device ready to use + | + [Application can read/write data] + | + tuh_midi2_rx_cb() <- Data arrived + tuh_midi2_tx_cb() <- TX buffer space available + | + [Device disconnects] + | + tuh_midi2_umount_cb() <- Device removed + +Public API +---------- + +Query Functions +^^^^^^^^^^^^^^^ + +.. code-block:: c + + bool tuh_midi2_mounted(uint8_t idx); + uint8_t tuh_midi2_get_protocol_version(uint8_t idx); // 0=MIDI 1.0, 1=MIDI 2.0 + uint8_t tuh_midi2_get_alt_setting_active(uint8_t idx); // 0 or 1 + uint8_t tuh_midi2_get_cable_count(uint8_t idx); + +I/O Functions +^^^^^^^^^^^^^ + +Read and write UMP (Universal MIDI Packet) data: + +.. code-block:: c + + uint32_t tuh_midi2_ump_read(uint8_t idx, uint32_t* words, uint32_t max_words); + uint32_t tuh_midi2_ump_write(uint8_t idx, const uint32_t* words, uint32_t count); + uint32_t tuh_midi2_write_flush(uint8_t idx); + +Callbacks +--------- + +Application can define weak callback implementations to respond to device events. + +Descriptor Callback +^^^^^^^^^^^^^^^^^^^ + +Invoked when device is detected but not yet ready for I/O: + +.. code-block:: c + + void tuh_midi2_descriptor_cb(uint8_t idx, const tuh_midi2_descriptor_cb_t *desc_cb_data) { + printf("MIDI %s device detected\r\n", + desc_cb_data->protocol_version == 0 ? "1.0" : "2.0"); + } + +Mount Callback +^^^^^^^^^^^^^^ + +Invoked when device is ready for I/O: + +.. code-block:: c + + void tuh_midi2_mount_cb(uint8_t idx, const tuh_midi2_mount_cb_t *mount_cb_data) { + printf("Device mounted at idx=%u, protocol=%u, alt_setting=%u\r\n", + idx, mount_cb_data->protocol_version, mount_cb_data->alt_setting_active); + } + +RX Callback +^^^^^^^^^^^ + +Invoked when data arrives from device (both UMP packets and Stream Messages): + +.. code-block:: c + + void tuh_midi2_rx_cb(uint8_t idx, uint32_t xferred_bytes) { + uint32_t words[4]; + uint32_t n = tuh_midi2_ump_read(idx, words, 4); + + for (uint32_t i = 0; i < n; i++) { + uint8_t mt = (words[i] >> 28) & 0x0F; + if (mt == 0x0F) { + // Stream Message - app handles discovery, negotiation, etc. + } else { + // Regular MIDI UMP packet + } + } + } + +TX Callback +^^^^^^^^^^^ + +Invoked when TX buffer space becomes available: + +.. code-block:: c + + void tuh_midi2_tx_cb(uint8_t idx, uint32_t xferred_bytes) { + // Buffer space available for writing + } + +Unmount Callback +^^^^^^^^^^^^^^^^ + +Invoked when device is disconnected: + +.. code-block:: c + + void tuh_midi2_umount_cb(uint8_t idx) { + printf("Device at idx=%u disconnected\r\n", idx); + } + +Complete Example +---------------- + +.. code-block:: c + + #include "tusb.h" + + void tuh_midi2_mount_cb(uint8_t idx, const tuh_midi2_mount_cb_t *mount_cb_data) { + printf("MIDI 2.0 device mounted\r\n"); + } + + void tuh_midi2_rx_cb(uint8_t idx, uint32_t xferred_bytes) { + uint32_t words[4]; + uint32_t n = tuh_midi2_ump_read(idx, words, 4); + + for (uint32_t i = 0; i < n; i++) { + printf("RX: 0x%08lx\r\n", words[i]); + } + } + + void tuh_midi2_umount_cb(uint8_t idx) { + printf("MIDI 2.0 device disconnected\r\n"); + } + + int main(void) { + board_init(); + + tusb_rhport_init_t host_init = {.role = TUSB_ROLE_HOST, .speed = TUSB_SPEED_AUTO}; + tusb_init(BOARD_TUH_RHPORT, &host_init); + + while (1) { + tuh_task(); + } + } + +Architecture +------------ + +The MIDI 2.0 Host driver uses a **reactive, callback-driven architecture** that mirrors the proven patterns in TinyUSB's existing device drivers (CDC, HID, etc.): + +- **Auto-Detection**: Host automatically detects Alt Setting 1 capability +- **Auto-Selection**: Selects highest protocol available and issues SET_INTERFACE +- **Transparent I/O**: Stream Messages and UMP packets flow through callbacks +- **Callback-Driven**: App receives events via callbacks (descriptor, mount, rx, tx, unmount) + +Differences from MIDI 1.0 Host +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +.. list-table:: + :header-rows: 1 + + * - Aspect + - MIDI 1.0 Host + - MIDI 2.0 Host + * - Alt Settings + - Parses only Alt 0 + - Parses Alt 0 + Alt 1 + * - Data Format + - 4-byte MIDI packets + - UMP (32/64/128-bit) + * - Version Detection + - None + - bcdMSC from descriptor + * - GTB + - N/A + - Presence detection + * - Stream Messages + - N/A + - Transparent passthrough + * - Callbacks + - descriptor_cb, mount_cb, rx_cb, umount_cb + - descriptor_cb, mount_cb, rx_cb, tx_cb, umount_cb + * - Public API + - tuh_midi_* + - tuh_midi2_* + +Implementation Notes +-------------------- + +- All internal state is statically allocated (no dynamic allocation) +- Endpoint streams use TinyUSB's tu_edpt_stream_t for buffered I/O +- Protocol version detection via bcdMSC field +- Alt Setting is automatically selected during mount +- Compatible with all TinyUSB-supported MCU families diff --git a/docs/reference/index.rst b/docs/reference/index.rst index d3c96eeee5..148e8a63b0 100644 --- a/docs/reference/index.rst +++ b/docs/reference/index.rst @@ -9,6 +9,7 @@ Complete reference documentation for TinyUSB APIs, configuration, and supported architecture usb_concepts + class_drivers boards dependencies concurrency diff --git a/examples/device/CMakeLists.txt b/examples/device/CMakeLists.txt index 7173f455e8..5916b69023 100644 --- a/examples/device/CMakeLists.txt +++ b/examples/device/CMakeLists.txt @@ -27,6 +27,7 @@ set(EXAMPLE_LIST hid_multiple_interface midi_test midi_test_freertos + midi2_device msc_dual_lun mtp net_lwip_webserver diff --git a/examples/device/midi2_device/CMakeLists.txt b/examples/device/midi2_device/CMakeLists.txt new file mode 100644 index 0000000000..3f4a876c98 --- /dev/null +++ b/examples/device/midi2_device/CMakeLists.txt @@ -0,0 +1,33 @@ +cmake_minimum_required(VERSION 3.20) + +include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake) + +project(midi2_device C CXX ASM) + +# Checks this example is valid for the family and initializes the project +family_initialize_project(${PROJECT_NAME} ${CMAKE_CURRENT_LIST_DIR}) + +# This example requires RP2040/RP2350 (USB descriptors and config are board-specific) +if(NOT FAMILY STREQUAL "rp2040") + return() +endif() + +add_executable(${PROJECT_NAME}) + +# Example source +target_sources(${PROJECT_NAME} PUBLIC + ${CMAKE_CURRENT_SOURCE_DIR}/src/main.c + ${CMAKE_CURRENT_SOURCE_DIR}/src/usb_descriptors.c + ) + +# Example include +target_include_directories(${PROJECT_NAME} PUBLIC + ${CMAKE_CURRENT_SOURCE_DIR}/src + ) + +# Configure compilation flags and libraries for the example without RTOS. +# See the corresponding function in hw/bsp/FAMILY/family.cmake for details. +family_configure_device_example(${PROJECT_NAME} noos) + +# Suppress pre-existing warning in usbd.c (uint8_t comparison always true/false) +target_compile_options(${PROJECT_NAME} PRIVATE -Wno-type-limits) diff --git a/examples/device/midi2_device/Makefile b/examples/device/midi2_device/Makefile new file mode 100644 index 0000000000..09f069c4fb --- /dev/null +++ b/examples/device/midi2_device/Makefile @@ -0,0 +1,27 @@ +# This example requires RP2040/RP2350 (USB descriptors and config are board-specific) +ifeq (,$(findstring rp2040,$(FAMILY))) +$(info Skipping midi2_device: requires FAMILY=rp2040) +all: + @: +.DEFAULT: + @: +else + +include ../../../hw/bsp/family_support.mk + +INC += \ + src \ + +# Example source +EXAMPLE_SOURCE += \ + src/main.c \ + src/usb_descriptors.c \ + +SRC_C += $(addprefix $(EXAMPLE_PATH)/, $(EXAMPLE_SOURCE)) + +# Suppress pre-existing warning in usbd.c +CFLAGS_GCC += -Wno-type-limits + +include ../../../hw/bsp/family_rules.mk + +endif diff --git a/examples/device/midi2_device/README.md b/examples/device/midi2_device/README.md new file mode 100644 index 0000000000..1731dba57d --- /dev/null +++ b/examples/device/midi2_device/README.md @@ -0,0 +1,59 @@ +# MIDI 2.0 Song Sender + +USB MIDI 2.0 Device example that plays "Twinkle Twinkle Little Star" using +native UMP (Universal MIDI Packet) format with full MIDI 2.0 expression. + +## MIDI 2.0 Features Demonstrated + +- 16-bit Velocity (vs 7-bit MIDI 1.0) +- 32-bit Control Change values +- 32-bit Pitch Bend (vs 14-bit MIDI 1.0) +- 32-bit Channel Pressure (Aftertouch) +- 32-bit Poly Pressure (Per-Note Aftertouch) +- Per-Note Management (MIDI 2.0 exclusive) +- Program Change with Bank Select +- JR Timestamps + +## USB Descriptor + +The device exposes both USB-MIDI 1.0 (Alt Setting 0) and USB-MIDI 2.0 (Alt Setting 1) +as required by the USB-MIDI 2.0 specification. A MIDI 2.0 capable host (e.g. Windows +MIDI Services) will select Alt Setting 1 for native UMP transport. Legacy hosts use +Alt Setting 0 with automatic MIDI 1.0 fallback. + +## Hardware + +- Any RP2040 board with USB (e.g. Raspberry Pi Pico) +- LED on GPIO 25: steady = playing, slow blink = waiting for host + +## Building + +```bash +mkdir build && cd build +cmake -DBOARD=raspberry_pi_pico -DPICO_SDK_FETCH_FROM_GIT=on -G Ninja .. +cmake --build . +``` + +## Flashing + +Hold BOOTSEL, connect USB, drag `midi2_device.uf2` to the RPI-RP2 drive. + +## Testing + +**Linux:** +```bash +aseqdump -p "MIDI 2.0 Device" +``` + +**Windows (MIDI 2.0 native):** +```powershell +midi endpoint list +midi endpoint monitor +``` + +## Song Data + +Twinkle Twinkle Little Star in C major, 120 BPM. Six phrases with dynamic +shaping (pp to ff crescendo and back), pitch bend vibrato on sustained notes, +and channel/poly pressure for expression. All values use genuine MIDI 2.0 +resolution with no 7-bit equivalent. diff --git a/examples/device/midi2_device/src/main.c b/examples/device/midi2_device/src/main.c new file mode 100644 index 0000000000..515efe07b0 --- /dev/null +++ b/examples/device/midi2_device/src/main.c @@ -0,0 +1,483 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include +#include +#include "bsp/board_api.h" +#include "tusb.h" +#include "class/midi/midi2_device.h" + +//--------------------------------------------------------------------+ +// MIDI 2.0 UMP Message Type Constants (M2-104-UM, Section 4) +//--------------------------------------------------------------------+ +// Message Type (MT) occupies bits 31-28 of Word 0 +#define UMP_MT_UTILITY 0x00000000 // 32-bit: Utility (NOOP, JR Clock, JR Timestamp) +#define UMP_MT_SYSTEM 0x10000000 // 32-bit: System Common / Real Time +#define UMP_MT_MIDI1_CV 0x20000000 // 32-bit: MIDI 1.0 Channel Voice +#define UMP_MT_DATA64 0x30000000 // 64-bit: Data (SysEx 7-bit) +#define UMP_MT_MIDI2_CV 0x40000000 // 64-bit: MIDI 2.0 Channel Voice +#define UMP_MT_DATA128 0x50000000 // 128-bit: Data (SysEx 8-bit) + +// MIDI 2.0 Channel Voice status (bits 23-20 of Word 0) +#define UMP_STATUS_NOTE_OFF 0x00800000 +#define UMP_STATUS_NOTE_ON 0x00900000 +#define UMP_STATUS_POLY_PRESSURE 0x00A00000 +#define UMP_STATUS_CC 0x00B00000 +#define UMP_STATUS_PROGRAM 0x00C00000 +#define UMP_STATUS_CHAN_PRESSURE 0x00D00000 +#define UMP_STATUS_PITCH_BEND 0x00E00000 +#define UMP_STATUS_PN_MGMT 0x00F00000 // Per-Note Management + +// Note Attribute Types (MIDI 2.0 spec, Section 4.2.6) +#define UMP_ATTR_NONE 0x00 +#define UMP_ATTR_MANUFACTURER 0x01 +#define UMP_ATTR_PROFILE 0x02 +#define UMP_ATTR_PITCH_7_9 0x03 // Pitch 7.9 format + +//--------------------------------------------------------------------+ +// MIDI 2.0 UMP Builders - Full Spec Coverage +//--------------------------------------------------------------------+ + +// Helper: send a 64-bit UMP (2 words) +static inline void ump_send_64(uint32_t w0, uint32_t w1) { + uint32_t words[2] = { w0, w1 }; + tud_midi2_ump_write(words, 2); +} + +// Helper: send a 32-bit UMP (1 word) +static inline void ump_send_32(uint32_t w0) { + tud_midi2_ump_write(&w0, 1); +} + +// -- Utility Messages (MT=0x0, 32-bit) -- + +static inline void ump_noop(void) { + ump_send_32(UMP_MT_UTILITY); +} + +static inline void ump_jr_timestamp(uint16_t timestamp) { + // Word 0: [MT(0x0) | Group(0) | Status(0x0020) | Timestamp(16-bit)] + ump_send_32(UMP_MT_UTILITY | 0x00200000 | (uint32_t)timestamp); +} + +// -- MIDI 2.0 Channel Voice: Note On (MT=0x4, 64-bit) -- +// Word 0: [MT(4):Group(4):Status(4):Channel(4):NoteNumber(8):AttrType(8)] +// Word 1: [Velocity(16):Attribute(16)] +static inline void ump_note_on(uint8_t group, uint8_t channel, + uint8_t pitch, uint16_t velocity, + uint8_t attr_type, uint16_t attr_val) { + uint32_t w0 = UMP_MT_MIDI2_CV | ((uint32_t)(group & 0x0F) << 24) + | UMP_STATUS_NOTE_ON | ((uint32_t)(channel & 0x0F) << 16) + | ((uint32_t)(pitch & 0x7F) << 8) + | (uint32_t)(attr_type & 0xFF); + uint32_t w1 = ((uint32_t)(velocity & 0xFFFF) << 16) + | (uint32_t)(attr_val & 0xFFFF); + ump_send_64(w0, w1); +} + +// -- MIDI 2.0 Channel Voice: Note Off (MT=0x4, 64-bit) -- +static inline void ump_note_off(uint8_t group, uint8_t channel, + uint8_t pitch, uint16_t velocity, + uint8_t attr_type, uint16_t attr_val) { + uint32_t w0 = UMP_MT_MIDI2_CV | ((uint32_t)(group & 0x0F) << 24) + | UMP_STATUS_NOTE_OFF | ((uint32_t)(channel & 0x0F) << 16) + | ((uint32_t)(pitch & 0x7F) << 8) + | (uint32_t)(attr_type & 0xFF); + uint32_t w1 = ((uint32_t)(velocity & 0xFFFF) << 16) + | (uint32_t)(attr_val & 0xFFFF); + ump_send_64(w0, w1); +} + +// -- MIDI 2.0 Channel Voice: Control Change (MT=0x4, 64-bit) -- +// Word 0: [MT(4):Group(4):Status(0xB):Channel(4):Index(8):Reserved(8)] +// Word 1: [Data(32)] -- full 32-bit CC resolution (vs 7-bit MIDI 1.0) +static inline void ump_cc(uint8_t group, uint8_t channel, + uint8_t index, uint32_t value) { + uint32_t w0 = UMP_MT_MIDI2_CV | ((uint32_t)(group & 0x0F) << 24) + | UMP_STATUS_CC | ((uint32_t)(channel & 0x0F) << 16) + | ((uint32_t)(index & 0x7F) << 8); + ump_send_64(w0, value); +} + +// -- MIDI 2.0 Channel Voice: Program Change (MT=0x4, 64-bit) -- +// Word 0: [MT(4):Group(4):Status(0xC):Channel(4):Reserved(8):OptionFlags(8)] +// Word 1: [Program(8):Reserved(8):BankMSB(8):BankLSB(8)] +// OptionFlags bit 0 = Bank Valid +static inline void ump_program_change(uint8_t group, uint8_t channel, + uint8_t program, + bool bank_valid, uint8_t bank_msb, + uint8_t bank_lsb) { + uint8_t flags = bank_valid ? 0x01 : 0x00; + uint32_t w0 = UMP_MT_MIDI2_CV | ((uint32_t)(group & 0x0F) << 24) + | UMP_STATUS_PROGRAM | ((uint32_t)(channel & 0x0F) << 16) + | (uint32_t)flags; + uint32_t w1 = ((uint32_t)program << 24) + | ((uint32_t)bank_msb << 8) + | (uint32_t)bank_lsb; + ump_send_64(w0, w1); +} + +// -- MIDI 2.0 Channel Voice: Pitch Bend (MT=0x4, 64-bit) -- +// Word 0: [MT(4):Group(4):Status(0xE):Channel(4):Reserved(16)] +// Word 1: [PitchBend(32)] -- full 32-bit (vs 14-bit MIDI 1.0!) +// 0x80000000 = center, 0x00000000 = min, 0xFFFFFFFF = max +static inline void ump_pitch_bend(uint8_t group, uint8_t channel, + uint32_t value) { + uint32_t w0 = UMP_MT_MIDI2_CV | ((uint32_t)(group & 0x0F) << 24) + | UMP_STATUS_PITCH_BEND | ((uint32_t)(channel & 0x0F) << 16); + ump_send_64(w0, value); +} + +// -- MIDI 2.0 Channel Voice: Channel Pressure / Aftertouch (MT=0x4, 64-bit) -- +// Word 0: [MT(4):Group(4):Status(0xD):Channel(4):Reserved(16)] +// Word 1: [Pressure(32)] -- full 32-bit (vs 7-bit MIDI 1.0) +static inline void ump_channel_pressure(uint8_t group, uint8_t channel, + uint32_t pressure) { + uint32_t w0 = UMP_MT_MIDI2_CV | ((uint32_t)(group & 0x0F) << 24) + | UMP_STATUS_CHAN_PRESSURE | ((uint32_t)(channel & 0x0F) << 16); + ump_send_64(w0, pressure); +} + +// -- MIDI 2.0 Channel Voice: Poly Pressure / Per-Note Aftertouch -- +// Word 0: [MT(4):Group(4):Status(0xA):Channel(4):NoteNumber(8):Reserved(8)] +// Word 1: [Pressure(32)] +static inline void ump_poly_pressure(uint8_t group, uint8_t channel, + uint8_t pitch, uint32_t pressure) { + uint32_t w0 = UMP_MT_MIDI2_CV | ((uint32_t)(group & 0x0F) << 24) + | UMP_STATUS_POLY_PRESSURE | ((uint32_t)(channel & 0x0F) << 16) + | ((uint32_t)(pitch & 0x7F) << 8); + ump_send_64(w0, pressure); +} + +// -- MIDI 2.0 Channel Voice: Per-Note Management (MT=0x4, 64-bit) -- +// Exclusive to MIDI 2.0: controls per-note behavior +// Word 0: [MT(4):Group(4):Status(0xF):Channel(4):NoteNumber(8):Flags(8)] +// Word 1: Reserved +// Flags bit 1 = Reset (S), bit 0 = Detach (D) +static inline void ump_per_note_mgmt(uint8_t group, uint8_t channel, + uint8_t pitch, bool detach, + bool reset) { + uint8_t flags = (reset ? 0x02 : 0x00) | (detach ? 0x01 : 0x00); + uint32_t w0 = UMP_MT_MIDI2_CV | ((uint32_t)(group & 0x0F) << 24) + | UMP_STATUS_PN_MGMT | ((uint32_t)(channel & 0x0F) << 16) + | ((uint32_t)(pitch & 0x7F) << 8) + | (uint32_t)flags; + ump_send_64(w0, 0x00000000); +} + +//--------------------------------------------------------------------+ +// Song Data +//--------------------------------------------------------------------+ + +// Extended note event with MIDI 2.0 expression data +typedef struct { + uint8_t pitch; // MIDI pitch (0-127, 0=rest) + uint16_t duration_ms; // Duration in ms + uint16_t velocity; // 16-bit velocity (MIDI 2.0) + uint32_t pressure; // 32-bit aftertouch (0 = none) + int16_t bend_cents; // Pitch bend in cents (0 = none, for vibrato/ornaments) +} midi2_note_t; + +// 16-bit velocity (MIDI 2.0): values that have NO 7-bit equivalent. +// MIDI 1.0 can only express 128 levels (0x0000, 0x0200, 0x0400 ... 0xFE00). +// These use the full 16-bit range to prove genuine MIDI 2.0 resolution. +#define V_PPP 0x0A3D // 2621 - between MIDI1 vel 5 and 6 +#define V_PP 0x1C71 // 7281 - between MIDI1 vel 14 and 15 +#define V_P 0x3219 // 12825 - between MIDI1 vel 24 and 25 +#define V_MP 0x4F5C // 20316 - between MIDI1 vel 39 and 40 +#define V_MF 0x6E93 // 28307 - between MIDI1 vel 55 and 56 +#define V_F 0x8DA5 // 36261 - between MIDI1 vel 70 and 71 +#define V_FF 0xAC37 // 44087 - between MIDI1 vel 85 and 86 +#define V_FFF 0xDEB8 // 57016 - between MIDI1 vel 111 and 112 + +// Twinkle Twinkle Little Star - Traditional +// Tempo: 120 BPM (500ms per quarter note) +// Key: C major, 4/4 +// Demonstrates all MIDI 2.0 Channel Voice features: +// 16-bit velocity, 32-bit CC, 32-bit pitch bend, +// 32-bit channel pressure, per-note poly pressure, +// per-note management, program change with bank select, +// JR timestamps +static const midi2_note_t song_data[] = { + // Phrase 1: "Twin-kle twin-kle lit-tle star" (C C G G A A G-) + // Crescendo pp -> mp, gentle entry + { .pitch = 60, .duration_ms = 500, .velocity = V_PP, .pressure = 0, .bend_cents = 0 }, // C4 + { .pitch = 60, .duration_ms = 500, .velocity = V_P, .pressure = 0, .bend_cents = 0 }, // C4 + { .pitch = 67, .duration_ms = 500, .velocity = V_MP, .pressure = 0, .bend_cents = 0 }, // G4 + { .pitch = 67, .duration_ms = 500, .velocity = V_MP, .pressure = 0, .bend_cents = 0 }, // G4 + { .pitch = 69, .duration_ms = 500, .velocity = V_MF, .pressure = 0x1A3D7E5F, .bend_cents = 0 }, // A4 (32-bit pressure) + { .pitch = 69, .duration_ms = 500, .velocity = V_MF, .pressure = 0x2B851EB9, .bend_cents = 0 }, // A4 (pressure swell) + { .pitch = 67, .duration_ms = 1000,.velocity = V_MF, .pressure = 0x3C6EF373, .bend_cents = 7 }, // G4 (half, bend 7 cents) + + // Phrase 2: "How I won-der what you are" (F F E E D D C-) + // mf, sustained + { .pitch = 65, .duration_ms = 500, .velocity = V_MF, .pressure = 0, .bend_cents = 0 }, // F4 + { .pitch = 65, .duration_ms = 500, .velocity = V_MF, .pressure = 0, .bend_cents = 0 }, // F4 + { .pitch = 64, .duration_ms = 500, .velocity = V_MF, .pressure = 0x1E4C2B7A, .bend_cents = 0 }, // E4 + { .pitch = 64, .duration_ms = 500, .velocity = V_MF, .pressure = 0x2D5A8FC1, .bend_cents = 0 }, // E4 (aftertouch swell) + { .pitch = 62, .duration_ms = 500, .velocity = V_MP, .pressure = 0, .bend_cents = 0 }, // D4 + { .pitch = 62, .duration_ms = 500, .velocity = V_MP, .pressure = 0, .bend_cents = 0 }, // D4 + { .pitch = 60, .duration_ms = 1000,.velocity = V_MP, .pressure = 0, .bend_cents = 0 }, // C4 (half, resolve) + + // Phrase 3: "Up a-bove the world so high" (G G F F E E D-) + // f, building intensity + { .pitch = 67, .duration_ms = 500, .velocity = V_F, .pressure = 0, .bend_cents = 0 }, // G4 + { .pitch = 67, .duration_ms = 500, .velocity = V_F, .pressure = 0, .bend_cents = 0 }, // G4 + { .pitch = 65, .duration_ms = 500, .velocity = V_F, .pressure = 0x2F8A4E13, .bend_cents = 0 }, // F4 + { .pitch = 65, .duration_ms = 500, .velocity = V_MF, .pressure = 0x41B2C9D7, .bend_cents = 0 }, // F4 (triggers poly pressure) + { .pitch = 64, .duration_ms = 500, .velocity = V_MF, .pressure = 0, .bend_cents = 0 }, // E4 + { .pitch = 64, .duration_ms = 500, .velocity = V_MF, .pressure = 0, .bend_cents = 0 }, // E4 + { .pitch = 62, .duration_ms = 1000,.velocity = V_MF, .pressure = 0x537DC2A6, .bend_cents = 13 }, // D4 (half, vibrato 13 cents) + + // Phrase 4: "Like a dia-mond in the sky" (G G F F E E D-) + // ff, expressive peak + { .pitch = 67, .duration_ms = 500, .velocity = V_FF, .pressure = 0, .bend_cents = 0 }, // G4 + { .pitch = 67, .duration_ms = 500, .velocity = V_FF, .pressure = 0, .bend_cents = 0 }, // G4 + { .pitch = 65, .duration_ms = 500, .velocity = V_F, .pressure = 0x44E7B8D2, .bend_cents = 0 }, // F4 (triggers poly pressure) + { .pitch = 65, .duration_ms = 500, .velocity = V_F, .pressure = 0x56A3F14B, .bend_cents = 0 }, // F4 (triggers poly pressure) + { .pitch = 64, .duration_ms = 500, .velocity = V_MF, .pressure = 0x2C8E1F5A, .bend_cents = 0 }, // E4 + { .pitch = 64, .duration_ms = 500, .velocity = V_MF, .pressure = 0x1D73A4E8, .bend_cents = 0 }, // E4 + { .pitch = 62, .duration_ms = 1000,.velocity = V_MF, .pressure = 0x63F5B17D, .bend_cents = 19 }, // D4 (half, vibrato 19 cents) + + // Phrase 5: "Twin-kle twin-kle lit-tle star" (C C G G A A G-) + // Diminuendo mf -> mp + { .pitch = 60, .duration_ms = 500, .velocity = V_MF, .pressure = 0, .bend_cents = 0 }, // C4 + { .pitch = 60, .duration_ms = 500, .velocity = V_MF, .pressure = 0, .bend_cents = 0 }, // C4 + { .pitch = 67, .duration_ms = 500, .velocity = V_MP, .pressure = 0, .bend_cents = 0 }, // G4 + { .pitch = 67, .duration_ms = 500, .velocity = V_MP, .pressure = 0, .bend_cents = 0 }, // G4 + { .pitch = 69, .duration_ms = 500, .velocity = V_MP, .pressure = 0x1B4F6D83, .bend_cents = 0 }, // A4 + { .pitch = 69, .duration_ms = 500, .velocity = V_P, .pressure = 0x0E29C5A1, .bend_cents = 0 }, // A4 + { .pitch = 67, .duration_ms = 1000,.velocity = V_P, .pressure = 0x2A6D3B9E, .bend_cents = 5 }, // G4 (half, gentle bend 5 cents) + + // Phrase 6: "How I won-der what you are" (F F E E D D C-) + // Dying away mp -> ppp + { .pitch = 65, .duration_ms = 500, .velocity = V_MP, .pressure = 0, .bend_cents = 0 }, // F4 + { .pitch = 65, .duration_ms = 500, .velocity = V_P, .pressure = 0, .bend_cents = 0 }, // F4 + { .pitch = 64, .duration_ms = 500, .velocity = V_P, .pressure = 0, .bend_cents = 0 }, // E4 + { .pitch = 64, .duration_ms = 500, .velocity = V_PP, .pressure = 0, .bend_cents = 0 }, // E4 + { .pitch = 62, .duration_ms = 500, .velocity = V_PP, .pressure = 0, .bend_cents = 0 }, // D4 + { .pitch = 62, .duration_ms = 500, .velocity = V_PPP, .pressure = 0, .bend_cents = 0 }, // D4 + { .pitch = 60, .duration_ms = 2000,.velocity = V_PPP, .pressure = 0x07A1E3C9, .bend_cents = 0 }, // C4 (fermata) + + // Silence before loop + { .pitch = 0, .duration_ms = 1000,.velocity = 0, .pressure = 0, .bend_cents = 0 }, + + // End marker + { .pitch = 0, .duration_ms = 0, .velocity = 0, .pressure = 0, .bend_cents = 0 }, +}; + +#define SONG_LENGTH (sizeof(song_data) / sizeof(midi2_note_t)) + +//--------------------------------------------------------------------+ +// Song Playback State Machine +//--------------------------------------------------------------------+ + +typedef struct { + uint32_t current_note_idx; + uint32_t note_start_ms; + uint8_t active_pitch; + bool note_is_active; + bool setup_sent; // Initial setup (Program Change, CC) sent? + uint32_t loop_count; +} song_state_t; + +static song_state_t song = { 0 }; + +// Forward declarations +void update_song_playback(uint32_t now_ms); +void send_initial_setup(void); + +//--------------------------------------------------------------------+ +// MIDI 2.0 Device Callbacks (override weak stubs from middleware) +//--------------------------------------------------------------------+ + +void tud_midi2_rx_cb(uint8_t itf) { + (void)itf; +} + +//--------------------------------------------------------------------+ +// Initial Setup - Program Change, CC, Per-Note Management +//--------------------------------------------------------------------+ + +void send_initial_setup(void) { + ump_jr_timestamp(0x0001); + ump_program_change(0, 0, 0, true, 0, 0); + ump_cc(0, 0, 7, 0xCCCCCCCC); // Volume 80% (32-bit) + ump_cc(0, 0, 11, 0xFFFFFFFF); // Expression 100% + ump_cc(0, 0, 64, 0x00000000); // Sustain off + ump_cc(0, 0, 1, 0x20000000); // Modulation + ump_cc(0, 0, 10, 0x80000000); // Pan center + ump_per_note_mgmt(0, 0, 0, false, true); // Per-Note reset + ump_pitch_bend(0, 0, 0x80000000); // Pitch Bend center + ump_channel_pressure(0, 0, 0x00000000); + + printf("[SETUP] Piano | Vol 80%% | UMP\r\n"); +} + +//--------------------------------------------------------------------+ +// Pitch Bend Conversion: cents to 32-bit value +//--------------------------------------------------------------------+ + +// Convert pitch bend in cents (-200 to +200) to 32-bit UMP value +// Center = 0x80000000, range = +/- 2 semitones (200 cents) +static inline uint32_t cents_to_pitch_bend(int16_t cents) { + if (cents == 0) return 0x80000000; + // Scale: 200 cents = full range (0x7FFFFFFF deviation from center) + int32_t offset = (int32_t)(((int64_t)cents * 0x7FFFFFFF) / 200); + return (uint32_t)((int32_t)0x80000000 + offset); +} + +//--------------------------------------------------------------------+ +// Song Playback Logic - Full MIDI 2.0 Expression +//--------------------------------------------------------------------+ + +void update_song_playback(uint32_t now_ms) { + const midi2_note_t *current = &song_data[song.current_note_idx]; + + if (!song.setup_sent) { + send_initial_setup(); + song.setup_sent = true; + song.note_start_ms = now_ms; + } + + // Note duration elapsed: send Note Off, advance + if (song.note_is_active && (now_ms - song.note_start_ms) >= current->duration_ms) { + if (song.active_pitch > 0) { + if (current->bend_cents != 0) ump_pitch_bend(0, 0, 0x80000000); + if (current->pressure > 0) ump_channel_pressure(0, 0, 0x00000000); + ump_note_off(0, 0, song.active_pitch, V_P, UMP_ATTR_NONE, 0); + } + + song.note_is_active = false; + song.current_note_idx++; + + if (song.current_note_idx >= SONG_LENGTH) { + song.current_note_idx = 0; + song.setup_sent = false; + song.loop_count++; + printf("\r\n=== Loop %lu ===\r\n", (unsigned long)song.loop_count); + } + + song.note_start_ms = now_ms; + } + + // Start next note + if (!song.note_is_active && song.current_note_idx < SONG_LENGTH) { + const midi2_note_t *next = &song_data[song.current_note_idx]; + + if (next->duration_ms == 0) { + song.current_note_idx = 0; + song.setup_sent = false; + song.loop_count++; + printf("\r\n=== Loop %lu ===\r\n", (unsigned long)song.loop_count); + return; + } + + if (next->pitch > 0) { + ump_jr_timestamp((uint16_t)(now_ms & 0xFFFF)); + if (next->bend_cents != 0) { + ump_pitch_bend(0, 0, cents_to_pitch_bend(next->bend_cents)); + } + ump_note_on(0, 0, next->pitch, next->velocity, UMP_ATTR_NONE, 0); + if (next->pressure > 0) { + ump_channel_pressure(0, 0, next->pressure); + } + if (next->pressure > 0x40000000 && next->duration_ms > 500) { + ump_poly_pressure(0, 0, next->pitch, next->pressure); + } + + song.active_pitch = next->pitch; + song.note_is_active = true; + } + + // Rest: honor duration + if (!song.note_is_active) { + song.active_pitch = 0; + song.note_is_active = true; + song.note_start_ms = now_ms; + } + } +} + +//--------------------------------------------------------------------+ +// Main +//--------------------------------------------------------------------+ + +int main(void) { + board_init(); + printf("\r\n"); + printf("===========================================\r\n"); + printf(" RP2040 MIDI 2.0 Device\r\n"); + printf("===========================================\r\n"); + printf("Tempo: 120 BPM | Format: UMP 64-bit\r\n"); + printf("Song: %u notes with full MIDI 2.0 expression\r\n", + (unsigned)SONG_LENGTH); + printf("Features:\r\n"); + printf(" - 16-bit Velocity (vs 7-bit MIDI 1.0)\r\n"); + printf(" - 32-bit Control Change\r\n"); + printf(" - 32-bit Pitch Bend (vs 14-bit MIDI 1.0)\r\n"); + printf(" - 32-bit Channel Pressure\r\n"); + printf(" - 32-bit Poly Pressure (per-note)\r\n"); + printf(" - Per-Note Management (MIDI 2.0 exclusive)\r\n"); + printf(" - Program Change with Bank Select\r\n"); + printf(" - JR Timestamps\r\n"); + printf("Status: Initializing...\r\n"); + + tusb_rhport_init_t dev_init = {.role = TUSB_ROLE_DEVICE, .speed = TUSB_SPEED_AUTO}; + tusb_init(BOARD_TUD_RHPORT, &dev_init); + + board_init_after_tusb(); + board_led_write(true); + + uint32_t last_report_ms = 0; + + while (1) { + tud_task(); + + uint32_t now_ms = tusb_time_millis_api(); + + if (tud_midi2_mounted()) { + update_song_playback(now_ms); + board_led_write(song.active_pitch > 0); + } else { + board_led_write((now_ms / 500) & 1); + } + + // Status report every 10 seconds + if (now_ms - last_report_ms > 10000) { + last_report_ms = now_ms; + if (tud_midi2_mounted()) { + printf("[%lums] Playing idx %lu/%u loop %lu\r\n", + (unsigned long)now_ms, + (unsigned long)song.current_note_idx, + (unsigned)SONG_LENGTH, + (unsigned long)song.loop_count); + } else { + printf("[%lums] Waiting for host...\r\n", (unsigned long)now_ms); + } + } + } + + return 0; +} diff --git a/examples/device/midi2_device/src/tusb_config.h b/examples/device/midi2_device/src/tusb_config.h new file mode 100644 index 0000000000..1ada0015f6 --- /dev/null +++ b/examples/device/midi2_device/src/tusb_config.h @@ -0,0 +1,88 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef TUSB_CONFIG_H_ +#define TUSB_CONFIG_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +//--------------------------------------------------------------------+ +// Board Specific Configuration +//--------------------------------------------------------------------+ + +#ifndef BOARD_TUD_RHPORT +#define BOARD_TUD_RHPORT 0 +#endif + +#ifndef BOARD_TUD_MAX_SPEED +#define BOARD_TUD_MAX_SPEED OPT_MODE_DEFAULT_SPEED +#endif + +//-------------------------------------------------------------------- +// COMMON CONFIGURATION +//-------------------------------------------------------------------- + +#ifndef CFG_TUSB_MCU +#error CFG_TUSB_MCU must be defined +#endif + +#ifndef CFG_TUSB_OS +#define CFG_TUSB_OS OPT_OS_NONE +#endif + +#ifndef CFG_TUSB_DEBUG +#define CFG_TUSB_DEBUG 0 +#endif + +// Enable Device stack +#define CFG_TUD_ENABLED 1 + +#define CFG_TUD_MAX_SPEED BOARD_TUD_MAX_SPEED + +#ifndef CFG_TUSB_MEM_SECTION +#define CFG_TUSB_MEM_SECTION +#endif + +#ifndef CFG_TUSB_MEM_ALIGN +#define CFG_TUSB_MEM_ALIGN __attribute__ ((aligned(4))) +#endif + +//-------------------------------------------------------------------- +// DEVICE CONFIGURATION +//-------------------------------------------------------------------- + +#ifndef CFG_TUD_ENDPOINT0_SIZE +#define CFG_TUD_ENDPOINT0_SIZE 64 +#endif + +//------------- CLASS -------------// +#define CFG_TUD_MIDI2 1 + +#ifdef __cplusplus +} +#endif + +#endif /* TUSB_CONFIG_H_ */ diff --git a/examples/device/midi2_device/src/usb_descriptors.c b/examples/device/midi2_device/src/usb_descriptors.c new file mode 100644 index 0000000000..ce289bd4d4 --- /dev/null +++ b/examples/device/midi2_device/src/usb_descriptors.c @@ -0,0 +1,142 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include +#include "bsp/board_api.h" +#include "tusb.h" +#include "class/audio/audio.h" +#include "class/midi/midi.h" + +//--------------------------------------------------------------------+ +// Device Descriptors +//--------------------------------------------------------------------+ + +static tusb_desc_device_t const desc_device = { + .bLength = sizeof(tusb_desc_device_t), + .bDescriptorType = TUSB_DESC_DEVICE, + .bcdUSB = 0x0200, + .bDeviceClass = 0x00, + .bDeviceSubClass = 0x00, + .bDeviceProtocol = 0x00, + .bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE, + + .idVendor = 0xcafe, + .idProduct = 0x4062, // MIDI 2.0 Device + .bcdDevice = 0x0100, + + .iManufacturer = 0x01, + .iProduct = 0x02, + .iSerialNumber = 0x03, + + .bNumConfigurations = 0x01 +}; + +uint8_t const * tud_descriptor_device_cb(void) { + return (uint8_t const *) &desc_device; +} + +//--------------------------------------------------------------------+ +// Configuration Descriptor - MIDI 2.0 +//--------------------------------------------------------------------+ + +enum { + ITF_NUM_MIDI2 = 0, // Audio Control interface + ITF_NUM_MIDI2_STREAMING, // MIDI Streaming interface (auto-created by TUD_MIDI2_DESCRIPTOR) + ITF_NUM_TOTAL +}; + +#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_MIDI2_DESC_LEN) + +// Endpoint addresses +#define EPNUM_MIDI2_OUT 0x01 +#define EPNUM_MIDI2_IN 0x81 + +static uint8_t const desc_fs_configuration[] = { + // Config number, interface count, string index, total length, attribute, power in mA + TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100), + + // MIDI 2.0 Interface + TUD_MIDI2_DESCRIPTOR(ITF_NUM_MIDI2, 0, EPNUM_MIDI2_OUT, EPNUM_MIDI2_IN, 64) +}; + +uint8_t const * tud_descriptor_configuration_cb(uint8_t index) { + (void) index; + return desc_fs_configuration; +} + +//--------------------------------------------------------------------+ +// String Descriptors +//--------------------------------------------------------------------+ + +enum { + STRID_LANGID = 0, + STRID_MANUFACTURER = 1, + STRID_PRODUCT = 2, + STRID_SERIAL = 3, +}; + +static char const *string_desc_arr[] = { + (const char[]) { 0x09, 0x04 }, // 0: Language + "TinyUSB", // 1: Manufacturer + "RP2040 MIDI 2.0", // 2: Product + NULL, // 3: Serial +}; + +static uint16_t _desc_str[32 + 1]; + +uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid) { + (void) langid; + size_t chr_count; + + switch ( index ) { + case STRID_LANGID: + memcpy(&_desc_str[1], string_desc_arr[0], 2); + chr_count = 1; + break; + + case STRID_SERIAL: + chr_count = board_usb_get_serial(_desc_str + 1, 32); + break; + + default: + if (!(index < sizeof(string_desc_arr) / sizeof(string_desc_arr[0]))) { + return NULL; + } + + const char *str = string_desc_arr[index]; + chr_count = strlen(str); + const size_t max_count = sizeof(_desc_str) / sizeof(_desc_str[0]) - 1; + if ( chr_count > max_count ) { + chr_count = max_count; + } + + for ( size_t i = 0; i < chr_count; i++ ) { + _desc_str[1 + i] = str[i]; + } + break; + } + + _desc_str[0] = (uint16_t) ((TUSB_DESC_STRING << 8) | (2 * chr_count + 2)); + return _desc_str; +} diff --git a/examples/host/CMakeLists.txt b/examples/host/CMakeLists.txt index f8e0ce6921..4dd60b7724 100644 --- a/examples/host/CMakeLists.txt +++ b/examples/host/CMakeLists.txt @@ -13,6 +13,7 @@ set(EXAMPLE_LIST device_info hid_controller midi_rx + midi2_host msc_file_explorer ) diff --git a/examples/host/midi2_host/CMakeLists.txt b/examples/host/midi2_host/CMakeLists.txt new file mode 100644 index 0000000000..cd70d122a6 --- /dev/null +++ b/examples/host/midi2_host/CMakeLists.txt @@ -0,0 +1,38 @@ +cmake_minimum_required(VERSION 3.20) + +include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake) + +project(midi2_host C CXX ASM) + +family_initialize_project(${PROJECT_NAME} ${CMAKE_CURRENT_LIST_DIR}) + +# This example requires PIO-USB and Pico SDK (I2C, SSD1306 display) +if(NOT FAMILY STREQUAL "rp2040") + return() +endif() + +add_executable(${PROJECT_NAME}) + +target_sources(${PROJECT_NAME} PUBLIC + ${CMAKE_CURRENT_SOURCE_DIR}/src/main.c + ${CMAKE_CURRENT_SOURCE_DIR}/src/display.c +) + +target_include_directories(${PROJECT_NAME} PUBLIC + ${CMAKE_CURRENT_SOURCE_DIR}/src +) + +family_configure_host_example(${PROJECT_NAME} noos) + +# Waveshare RP2350-USB-A: PIO-USB on GP12/GP13 +target_compile_definitions(${PROJECT_NAME} PRIVATE + PIO_USB_DP_PIN_DEFAULT=12 +) +target_compile_options(${PROJECT_NAME} PRIVATE + -Wno-type-limits +) + +# SSD1306 display (I2C) +target_link_libraries(${PROJECT_NAME} PUBLIC + hardware_i2c +) diff --git a/examples/host/midi2_host/Makefile b/examples/host/midi2_host/Makefile new file mode 100644 index 0000000000..2b46605167 --- /dev/null +++ b/examples/host/midi2_host/Makefile @@ -0,0 +1,27 @@ +# This example requires RP2040/RP2350 (PIO-USB, Pico SDK I2C, SSD1306 display) +ifeq (,$(findstring rp2040,$(FAMILY))) +$(info Skipping midi2_host: requires FAMILY=rp2040) +all: + @: +.DEFAULT: + @: +else + +include ../../../hw/bsp/family_support.mk + +INC += \ + src \ + +# Example source +EXAMPLE_SOURCE += \ + src/main.c \ + src/display.c \ + +SRC_C += $(addprefix $(EXAMPLE_PATH)/, $(EXAMPLE_SOURCE)) + +# Suppress pre-existing warning +CFLAGS_GCC += -Wno-type-limits + +include ../../../hw/bsp/family_rules.mk + +endif diff --git a/examples/host/midi2_host/src/display.c b/examples/host/midi2_host/src/display.c new file mode 100644 index 0000000000..4745c29613 --- /dev/null +++ b/examples/host/midi2_host/src/display.c @@ -0,0 +1,221 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +// SSD1306 OLED display driver (128x64, I2C) for MIDI 2.0 Host example. +// Minimal text-only implementation, no graphics library. +// I2C0: SDA = GP4, SCL = GP5, Address = 0x3C + +#include "display.h" +#include +#include +#include "pico/stdlib.h" +#include "hardware/i2c.h" +#include "hardware/gpio.h" + +#define I2C_PORT i2c0 +#define I2C_SDA 4 +#define I2C_SCL 5 +#define I2C_FREQ 400000 +#define SSD1306_ADDR 0x3C + +#define SCR_W 128 +#define SCR_H 64 +#define PAGES (SCR_H / 8) // 8 pages +#define CHARS_PER_LINE 21 // 128 / 6 = 21 chars + +// Framebuffer +static uint8_t fb[SCR_W * PAGES]; + +// Log buffer +#define LOG_LINES 3 +static char log_lines[LOG_LINES][CHARS_PER_LINE + 1]; +static int log_count = 0; + +// Status line +static char status_text[CHARS_PER_LINE + 1] = ""; + +//--------------------------------------------------------------------+ +// Minimal 5x7 font (ASCII 32-126) +//--------------------------------------------------------------------+ +#include "font5x7.h" + +//--------------------------------------------------------------------+ +// SSD1306 I2C commands +//--------------------------------------------------------------------+ + +static void ssd_cmd(uint8_t cmd) { + uint8_t buf[2] = { 0x00, cmd }; // Co=0, D/C=0 + i2c_write_blocking(I2C_PORT, SSD1306_ADDR, buf, 2, false); +} + +static void ssd_data(const uint8_t* data, size_t len) { + uint8_t buf[SCR_W + 1]; + buf[0] = 0x40; // Co=0, D/C=1 + size_t chunk = (len > SCR_W) ? SCR_W : len; + memcpy(buf + 1, data, chunk); + i2c_write_blocking(I2C_PORT, SSD1306_ADDR, buf, chunk + 1, false); +} + +static void ssd_flush(void) { + ssd_cmd(0x21); ssd_cmd(0); ssd_cmd(127); // Column range + ssd_cmd(0x22); ssd_cmd(0); ssd_cmd(7); // Page range + for (int page = 0; page < PAGES; page++) { + ssd_data(&fb[page * SCR_W], SCR_W); + } +} + +//--------------------------------------------------------------------+ +// Framebuffer drawing +//--------------------------------------------------------------------+ + +static void fb_clear(void) { + memset(fb, 0, sizeof(fb)); +} + +static void fb_char(int x, int y, char c) { + if (c < 32 || c > 126) c = '?'; + const uint8_t* glyph = font5x7 + (c - 32) * 5; + int page = y / 8; + int bit_offset = y % 8; + + if (page >= PAGES || x + 5 > SCR_W) return; + + for (int col = 0; col < 5; col++) { + uint8_t column_data = glyph[col]; + fb[(page * SCR_W) + x + col] |= (uint8_t)(column_data << bit_offset); + if (bit_offset > 0 && page + 1 < PAGES) { + fb[((page + 1) * SCR_W) + x + col] |= (uint8_t)(column_data >> (8 - bit_offset)); + } + } +} + +static void fb_string(int x, int y, const char* str) { + while (*str) { + fb_char(x, y, *str); + x += 6; + if (x + 6 > SCR_W) break; + str++; + } +} + +//--------------------------------------------------------------------+ +// Display API +//--------------------------------------------------------------------+ + +void display_init(void) { + i2c_init(I2C_PORT, I2C_FREQ); + gpio_set_function(I2C_SDA, GPIO_FUNC_I2C); + gpio_set_function(I2C_SCL, GPIO_FUNC_I2C); + gpio_pull_up(I2C_SDA); + gpio_pull_up(I2C_SCL); + + sleep_ms(100); + + // SSD1306 init sequence + ssd_cmd(0xAE); // Display off + ssd_cmd(0xD5); ssd_cmd(0x80); // Clock div + ssd_cmd(0xA8); ssd_cmd(0x3F); // Multiplex 64 + ssd_cmd(0xD3); ssd_cmd(0x00); // Display offset + ssd_cmd(0x40); // Start line 0 + ssd_cmd(0x8D); ssd_cmd(0x14); // Charge pump on + ssd_cmd(0x20); ssd_cmd(0x00); // Horizontal addressing + ssd_cmd(0xA1); // Segment remap + ssd_cmd(0xC8); // COM scan direction + ssd_cmd(0xDA); ssd_cmd(0x12); // COM pins + ssd_cmd(0x81); ssd_cmd(0xCF); // Contrast + ssd_cmd(0xD9); ssd_cmd(0xF1); // Pre-charge + ssd_cmd(0xDB); ssd_cmd(0x40); // VCOMH deselect + ssd_cmd(0xA4); // Display from RAM + ssd_cmd(0xA6); // Normal display + ssd_cmd(0xAF); // Display on + + fb_clear(); + fb_string(0, 0, "MIDI 2.0 Host"); + ssd_flush(); +} + +void display_checklist_update(const checklist_t* ck) { + struct { const char* label; bool ok; } items[] = { + { "PWR", ck->pwr_on }, + { "TinyUSB", ck->tusb_init }, + { "USB bus", ck->bus_active }, + { "Device", ck->device_connected }, + { "Descript", ck->descriptor_parsed }, + { "Alt1 UMP", ck->alt_setting_ok }, + { "Mount", ck->mounted }, + { "RX UMP", ck->receiving }, + }; + + // Clear checklist area (lines 1-4, two columns) + for (int p = 1; p <= 4; p++) { + memset(&fb[p * SCR_W], 0, SCR_W); + } + + for (int i = 0; i < 8; i++) { + int col = (i < 4) ? 0 : 64; + int row = (i < 4) ? i : i - 4; + int y = 9 + row * 8; + char line[12]; + snprintf(line, sizeof(line), "%s %s", items[i].ok ? "OK" : "..", items[i].label); + fb_string(col, y, line); + } + + ssd_flush(); +} + +void display_log(const char* text, uint16_t color) { + (void)color; // SSD1306 is monochrome + + if (log_count >= LOG_LINES) { + for (int i = 0; i < LOG_LINES - 1; i++) { + strncpy(log_lines[i], log_lines[i + 1], CHARS_PER_LINE); + log_lines[i][CHARS_PER_LINE] = '\0'; + } + log_count = LOG_LINES - 1; + } + + strncpy(log_lines[log_count], text, CHARS_PER_LINE); + log_lines[log_count][CHARS_PER_LINE] = '\0'; + log_count++; + + // Draw log area (pages 5-6, y=40-55) + memset(&fb[5 * SCR_W], 0, SCR_W); + memset(&fb[6 * SCR_W], 0, SCR_W); + + for (int i = 0; i < log_count && i < LOG_LINES; i++) { + fb_string(0, 41 + i * 8, log_lines[i]); + } + + ssd_flush(); +} + +void display_status(const char* text) { + strncpy(status_text, text, CHARS_PER_LINE); + status_text[CHARS_PER_LINE] = '\0'; + + // Status on last page (y=56) + memset(&fb[7 * SCR_W], 0, SCR_W); + fb_string(0, 56, status_text); + ssd_flush(); +} diff --git a/examples/host/midi2_host/src/display.h b/examples/host/midi2_host/src/display.h new file mode 100644 index 0000000000..a8b0a4b5ec --- /dev/null +++ b/examples/host/midi2_host/src/display.h @@ -0,0 +1,54 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef DISPLAY_H_ +#define DISPLAY_H_ + +#include +#include + +typedef struct { + bool pwr_on; + bool tusb_init; + bool bus_active; + bool device_connected; + bool descriptor_parsed; + bool alt_setting_ok; + bool mounted; + bool receiving; +} checklist_t; + +// Initialize SSD1306 display (I2C on GP4/GP5) +void display_init(void); + +// Redraw the checklist area (top portion) +void display_checklist_update(const checklist_t* ck); + +// Add a line to the scrolling log area +void display_log(const char* text, uint16_t color); + +// Update the status bar (bottom line) +void display_status(const char* text); + +#endif diff --git a/examples/host/midi2_host/src/font5x7.h b/examples/host/midi2_host/src/font5x7.h new file mode 100644 index 0000000000..e515faac10 --- /dev/null +++ b/examples/host/midi2_host/src/font5x7.h @@ -0,0 +1,107 @@ +// Minimal 5x7 font, ASCII 32-126. Public domain. +// 5 bytes per character (5 columns, 7 rows, LSB=top row) + +#ifndef FONT5X7_H_ +#define FONT5X7_H_ + +#include + +static const uint8_t font5x7[] = { + 0x00,0x00,0x00,0x00,0x00, // 32 (space) + 0x00,0x00,0x5F,0x00,0x00, // 33 ! + 0x00,0x07,0x00,0x07,0x00, // 34 " + 0x14,0x7F,0x14,0x7F,0x14, // 35 # + 0x24,0x2A,0x7F,0x2A,0x12, // 36 $ + 0x23,0x13,0x08,0x64,0x62, // 37 % + 0x36,0x49,0x55,0x22,0x50, // 38 & + 0x00,0x05,0x03,0x00,0x00, // 39 ' + 0x00,0x1C,0x22,0x41,0x00, // 40 ( + 0x00,0x41,0x22,0x1C,0x00, // 41 ) + 0x08,0x2A,0x1C,0x2A,0x08, // 42 * + 0x08,0x08,0x3E,0x08,0x08, // 43 + + 0x00,0x50,0x30,0x00,0x00, // 44 , + 0x08,0x08,0x08,0x08,0x08, // 45 - + 0x00,0x60,0x60,0x00,0x00, // 46 . + 0x20,0x10,0x08,0x04,0x02, // 47 / + 0x3E,0x51,0x49,0x45,0x3E, // 48 0 + 0x00,0x42,0x7F,0x40,0x00, // 49 1 + 0x42,0x61,0x51,0x49,0x46, // 50 2 + 0x21,0x41,0x45,0x4B,0x31, // 51 3 + 0x18,0x14,0x12,0x7F,0x10, // 52 4 + 0x27,0x45,0x45,0x45,0x39, // 53 5 + 0x3C,0x4A,0x49,0x49,0x30, // 54 6 + 0x01,0x71,0x09,0x05,0x03, // 55 7 + 0x36,0x49,0x49,0x49,0x36, // 56 8 + 0x06,0x49,0x49,0x29,0x1E, // 57 9 + 0x00,0x36,0x36,0x00,0x00, // 58 : + 0x00,0x56,0x36,0x00,0x00, // 59 ; + 0x00,0x08,0x14,0x22,0x41, // 60 < + 0x14,0x14,0x14,0x14,0x14, // 61 = + 0x41,0x22,0x14,0x08,0x00, // 62 > + 0x02,0x01,0x51,0x09,0x06, // 63 ? + 0x32,0x49,0x79,0x41,0x3E, // 64 @ + 0x7E,0x11,0x11,0x11,0x7E, // 65 A + 0x7F,0x49,0x49,0x49,0x36, // 66 B + 0x3E,0x41,0x41,0x41,0x22, // 67 C + 0x7F,0x41,0x41,0x22,0x1C, // 68 D + 0x7F,0x49,0x49,0x49,0x41, // 69 E + 0x7F,0x09,0x09,0x01,0x01, // 70 F + 0x3E,0x41,0x41,0x51,0x32, // 71 G + 0x7F,0x08,0x08,0x08,0x7F, // 72 H + 0x00,0x41,0x7F,0x41,0x00, // 73 I + 0x20,0x40,0x41,0x3F,0x01, // 74 J + 0x7F,0x08,0x14,0x22,0x41, // 75 K + 0x7F,0x40,0x40,0x40,0x40, // 76 L + 0x7F,0x02,0x04,0x02,0x7F, // 77 M + 0x7F,0x04,0x08,0x10,0x7F, // 78 N + 0x3E,0x41,0x41,0x41,0x3E, // 79 O + 0x7F,0x09,0x09,0x09,0x06, // 80 P + 0x3E,0x41,0x51,0x21,0x5E, // 81 Q + 0x7F,0x09,0x19,0x29,0x46, // 82 R + 0x46,0x49,0x49,0x49,0x31, // 83 S + 0x01,0x01,0x7F,0x01,0x01, // 84 T + 0x3F,0x40,0x40,0x40,0x3F, // 85 U + 0x1F,0x20,0x40,0x20,0x1F, // 86 V + 0x7F,0x20,0x18,0x20,0x7F, // 87 W + 0x63,0x14,0x08,0x14,0x63, // 88 X + 0x03,0x04,0x78,0x04,0x03, // 89 Y + 0x61,0x51,0x49,0x45,0x43, // 90 Z + 0x00,0x00,0x7F,0x41,0x41, // 91 [ + 0x02,0x04,0x08,0x10,0x20, // 92 backslash + 0x41,0x41,0x7F,0x00,0x00, // 93 ] + 0x04,0x02,0x01,0x02,0x04, // 94 ^ + 0x40,0x40,0x40,0x40,0x40, // 95 _ + 0x00,0x01,0x02,0x04,0x00, // 96 ` + 0x20,0x54,0x54,0x54,0x78, // 97 a + 0x7F,0x48,0x44,0x44,0x38, // 98 b + 0x38,0x44,0x44,0x44,0x20, // 99 c + 0x38,0x44,0x44,0x48,0x7F, // 100 d + 0x38,0x54,0x54,0x54,0x18, // 101 e + 0x08,0x7E,0x09,0x01,0x02, // 102 f + 0x08,0x14,0x54,0x54,0x3C, // 103 g + 0x7F,0x08,0x04,0x04,0x78, // 104 h + 0x00,0x44,0x7D,0x40,0x00, // 105 i + 0x20,0x40,0x44,0x3D,0x00, // 106 j + 0x00,0x7F,0x10,0x28,0x44, // 107 k + 0x00,0x41,0x7F,0x40,0x00, // 108 l + 0x7C,0x04,0x18,0x04,0x78, // 109 m + 0x7C,0x08,0x04,0x04,0x78, // 110 n + 0x38,0x44,0x44,0x44,0x38, // 111 o + 0x7C,0x14,0x14,0x14,0x08, // 112 p + 0x08,0x14,0x14,0x18,0x7C, // 113 q + 0x7C,0x08,0x04,0x04,0x08, // 114 r + 0x48,0x54,0x54,0x54,0x20, // 115 s + 0x04,0x3F,0x44,0x40,0x20, // 116 t + 0x3C,0x40,0x40,0x20,0x7C, // 117 u + 0x1C,0x20,0x40,0x20,0x1C, // 118 v + 0x3C,0x40,0x30,0x40,0x3C, // 119 w + 0x44,0x28,0x10,0x28,0x44, // 120 x + 0x0C,0x50,0x50,0x50,0x3C, // 121 y + 0x44,0x64,0x54,0x4C,0x44, // 122 z + 0x00,0x08,0x36,0x41,0x00, // 123 { + 0x00,0x00,0x7F,0x00,0x00, // 124 | + 0x00,0x41,0x36,0x08,0x00, // 125 } + 0x10,0x08,0x08,0x10,0x08, // 126 ~ +}; + +#endif diff --git a/examples/host/midi2_host/src/main.c b/examples/host/midi2_host/src/main.c new file mode 100644 index 0000000000..e23fbfc875 --- /dev/null +++ b/examples/host/midi2_host/src/main.c @@ -0,0 +1,326 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +// MIDI 2.0 Host Receiver Example +// +// Receives UMP from a MIDI 2.0 Device via PIO-USB Host. +// SSD1306 OLED (I2C, 128x64) shows boot checklist then received UMP messages. + +#include +#include +#include "bsp/board_api.h" +#include "tusb.h" +#include "class/midi/midi2_host.h" +#include "class/midi/midi.h" +#include "display.h" + +//--------------------------------------------------------------------+ +// Checklist state +//--------------------------------------------------------------------+ + +static checklist_t ck = { 0 }; +static uint32_t note_count = 0; +static uint8_t midi2_idx = 0xFF; // invalid until mount + +//--------------------------------------------------------------------+ +// Note name helper +//--------------------------------------------------------------------+ + +static const char* NOTE_NAMES[] = { + "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B" +}; + +static void note_name(uint8_t pitch, char* buf, size_t len) { + int octave = (pitch / 12) - 1; + snprintf(buf, len, "%s%d", NOTE_NAMES[pitch % 12], octave); +} + +//--------------------------------------------------------------------+ +// UMP Message Type names +//--------------------------------------------------------------------+ + +static const char* mt_name(uint8_t mt) { + switch (mt) { + case 0x0: return "Utility"; + case 0x1: return "System"; + case 0x2: return "M1 CVM"; + case 0x3: return "SysEx7"; + case 0x4: return "M2 CVM"; + case 0x5: return "SysEx8"; + case 0xD: return "Flex"; + case 0xF: return "Stream"; + default: return "?"; + } +} + +//--------------------------------------------------------------------+ +// UMP decoder - extract and display MIDI 2.0 messages +//--------------------------------------------------------------------+ + +static void decode_ump(const uint32_t* words, uint8_t word_count) { + uint8_t mt = (uint8_t)((words[0] >> 28) & 0x0F); + char line[64]; + + if (mt == 0x4 && word_count >= 2) { + // MIDI 2.0 Channel Voice Message + uint8_t status = (uint8_t)((words[0] >> 20) & 0x0F); + uint8_t channel = (uint8_t)((words[0] >> 16) & 0x0F); + + switch (status) { + case 0x9: { // Note On + uint8_t pitch = (uint8_t)((words[0] >> 8) & 0x7F); + uint16_t vel = (uint16_t)((words[1] >> 16) & 0xFFFF); + char nn[6]; + note_name(pitch, nn, sizeof(nn)); + snprintf(line, sizeof(line), "NoteOn %s ch%u vel=0x%04X", nn, channel, vel); + display_log(line, 0x07E0); // green + note_count++; + break; + } + case 0x8: { // Note Off + uint8_t pitch = (uint8_t)((words[0] >> 8) & 0x7F); + char nn[6]; + note_name(pitch, nn, sizeof(nn)); + snprintf(line, sizeof(line), "NoteOff %s ch%u", nn, channel); + display_log(line, 0x8410); // grey + break; + } + case 0xB: { // CC + uint8_t idx = (uint8_t)((words[0] >> 8) & 0x7F); + snprintf(line, sizeof(line), "CC%-3u = 0x%08lX", idx, (unsigned long)words[1]); + display_log(line, 0x001F); // blue + break; + } + case 0xC: { // Program Change + uint8_t prog = (uint8_t)((words[1] >> 24) & 0x7F); + snprintf(line, sizeof(line), "ProgChg %u", prog); + display_log(line, 0xFFE0); // yellow + break; + } + case 0xE: { // Pitch Bend + snprintf(line, sizeof(line), "PBend = 0x%08lX", (unsigned long)words[1]); + display_log(line, 0xF81F); // magenta + break; + } + case 0xD: { // Channel Pressure + snprintf(line, sizeof(line), "CPress = 0x%08lX", (unsigned long)words[1]); + display_log(line, 0xFC10); // orange + break; + } + case 0xA: { // Poly Pressure + uint8_t pitch = (uint8_t)((words[0] >> 8) & 0x7F); + char nn[6]; + note_name(pitch, nn, sizeof(nn)); + snprintf(line, sizeof(line), "PolyP %s = 0x%08lX", nn, (unsigned long)words[1]); + display_log(line, 0xFC10); + break; + } + case 0xF: { // Per-Note Management + uint8_t pitch = (uint8_t)((words[0] >> 8) & 0x7F); + uint8_t flags = (uint8_t)(words[0] & 0xFF); + snprintf(line, sizeof(line), "PN-Mgmt note=%u flags=0x%02X", pitch, flags); + display_log(line, 0x07FF); // cyan + break; + } + default: { + snprintf(line, sizeof(line), "M2CVM status=0x%X", status); + display_log(line, 0xFFFF); + break; + } + } + } else if (mt == 0x0) { + // Utility (JR Timestamp, NOOP) + uint8_t status = (uint8_t)((words[0] >> 20) & 0x0F); + if (status == 0x2) { + uint16_t ts = words[0] & 0xFFFF; + snprintf(line, sizeof(line), "JR-TS = 0x%04X", ts); + display_log(line, 0x8410); + } + } else { + snprintf(line, sizeof(line), "MT=0x%X (%s) w0=0x%08lX", + mt, mt_name(mt), (unsigned long)words[0]); + display_log(line, 0xFFFF); + } +} + +//--------------------------------------------------------------------+ +// MIDI 2.0 Host Callbacks +//--------------------------------------------------------------------+ + +void tuh_midi2_descriptor_cb(uint8_t idx, const tuh_midi2_descriptor_cb_t* d) { + (void)idx; + ck.descriptor_parsed = true; + char line[48]; + + snprintf(line, sizeof(line), "bcdMSC=0x%02X%02X proto=%s", + d->bcdMSC_hi, d->bcdMSC_lo, + d->protocol_version ? "MIDI2" : "MIDI1"); + display_log(line, 0x07E0); + + snprintf(line, sizeof(line), "Cables: RX=%u TX=%u", + d->rx_cable_count, d->tx_cable_count); + display_log(line, 0x07E0); + + display_checklist_update(&ck); +} + +void tuh_midi2_mount_cb(uint8_t idx, const tuh_midi2_mount_cb_t* m) { + midi2_idx = idx; + ck.alt_setting_ok = true; + ck.mounted = true; + + char line[48]; + snprintf(line, sizeof(line), "Mounted addr=%u alt=%u", + m->daddr, m->alt_setting_active); + display_log(line, 0x07E0); + + if (m->protocol_version) { + display_log("MIDI 2.0 ready", 0x07E0); + } else { + display_log("MIDI 1.0 only", 0xFFE0); + } + + display_checklist_update(&ck); +} + +void tuh_midi2_rx_cb(uint8_t idx, uint32_t xferred_bytes) { + (void)xferred_bytes; + if (!ck.receiving) { + ck.receiving = true; + display_checklist_update(&ck); + } + + uint32_t words[16]; + while (1) { + uint32_t n = tuh_midi2_ump_read(idx, words, 16); + if (n == 0) break; + + // Decode complete UMP messages + uint32_t i = 0; + while (i < n) { + uint8_t mt = (uint8_t)((words[i] >> 28) & 0x0F); + uint8_t wc = midi2_ump_word_count(mt); + if (i + wc > n) break; + decode_ump(&words[i], wc); + i += wc; + } + } +} + +void tuh_midi2_tx_cb(uint8_t idx, uint32_t xferred_bytes) { + (void)idx; (void)xferred_bytes; +} + +void tuh_midi2_umount_cb(uint8_t idx) { + (void)idx; + midi2_idx = 0xFF; + ck.device_connected = false; + ck.descriptor_parsed = false; + ck.alt_setting_ok = false; + ck.mounted = false; + ck.receiving = false; + note_count = 0; + + display_log("Device disconnected", 0xF800); + display_checklist_update(&ck); +} + +//--------------------------------------------------------------------+ +// Main +//--------------------------------------------------------------------+ + +int main(void) { + board_init(); + + display_init(); + + ck.pwr_on = true; + display_checklist_update(&ck); + + // Init TinyUSB Host (BSP handles PIO-USB configuration via tuh_configure) + tusb_rhport_init_t host_init = { + .role = TUSB_ROLE_HOST, + .speed = TUSB_SPEED_FULL, + }; + tusb_init(BOARD_TUH_RHPORT, &host_init); + + ck.tusb_init = true; + ck.bus_active = true; + display_checklist_update(&ck); + + char dbg[40]; + snprintf(dbg, sizeof(dbg), "RHPORT=%u PIO_USB=%u", + BOARD_TUH_RHPORT, CFG_TUH_RPI_PIO_USB); + display_log(dbg, 0xFFE0); // yellow + display_status("Waiting for device..."); + + uint32_t last_status_ms = 0; + static uint32_t loop_count = 0; + + while (1) { + tuh_task(); + loop_count++; + + // Update status every 2 seconds + uint32_t now = tusb_time_millis_api(); + if (now - last_status_ms > 2000) { + last_status_ms = now; + char line[22]; + if (ck.receiving) { + snprintf(line, sizeof(line), "Notes:%lu", (unsigned long)note_count); + } else if (ck.mounted) { + snprintf(line, sizeof(line), "Mounted OK!"); + } else if (ck.device_connected) { + snprintf(line, sizeof(line), "Dev found, mounting.."); + } else { + snprintf(line, sizeof(line), "Wait.. t=%lu", (unsigned long)(now/1000)); + } + display_status(line); + } + } + + return 0; +} + +// Generic USB device mount/unmount (any class) +void tuh_mount_cb(uint8_t daddr) { + char line[32]; + uint16_t vid, pid; + tuh_vid_pid_get(daddr, &vid, &pid); + snprintf(line, sizeof(line), "USB %04X:%04X a%u", vid, pid, daddr); + display_log(line, 0x07E0); + ck.device_connected = true; + display_checklist_update(&ck); +} + +void tuh_umount_cb(uint8_t daddr) { + (void)daddr; + display_log("USB disconnected", 0xF800); + ck.device_connected = false; + ck.descriptor_parsed = false; + ck.alt_setting_ok = false; + ck.mounted = false; + ck.receiving = false; + display_checklist_update(&ck); +} diff --git a/examples/host/midi2_host/src/tusb_config.h b/examples/host/midi2_host/src/tusb_config.h new file mode 100644 index 0000000000..650df97e1c --- /dev/null +++ b/examples/host/midi2_host/src/tusb_config.h @@ -0,0 +1,91 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef TUSB_CONFIG_H_ +#define TUSB_CONFIG_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +//-------------------------------------------------------------------- +// Common Configuration +//-------------------------------------------------------------------- + +#ifndef CFG_TUSB_MCU +#error CFG_TUSB_MCU must be defined +#endif + +#ifndef CFG_TUSB_OS +#define CFG_TUSB_OS OPT_OS_NONE +#endif + +#ifndef CFG_TUSB_DEBUG +#define CFG_TUSB_DEBUG 0 +#endif + +#ifndef CFG_TUH_MEM_SECTION +#define CFG_TUH_MEM_SECTION +#endif + +#ifndef CFG_TUH_MEM_ALIGN +#define CFG_TUH_MEM_ALIGN __attribute__ ((aligned(4))) +#endif + +//-------------------------------------------------------------------- +// Host Configuration +// Waveshare RP2350-USB-A: PIO-USB on GP12/GP13 (USB-A Host port) +//-------------------------------------------------------------------- + +#define CFG_TUH_ENABLED 1 + +// PIO-USB Host on rhport 1 (USB-A connector on GP12/GP13) +#define CFG_TUH_RPI_PIO_USB 1 +#define BOARD_TUH_RHPORT 1 + +#ifndef BOARD_TUH_MAX_SPEED +#define BOARD_TUH_MAX_SPEED OPT_MODE_FULL_SPEED +#endif + +#define CFG_TUH_MAX_SPEED BOARD_TUH_MAX_SPEED + +//-------------------------------------------------------------------- +// Driver Configuration +//-------------------------------------------------------------------- + +#define CFG_TUH_ENUMERATION_BUFSIZE 256 + +#define CFG_TUH_HUB 0 +#define CFG_TUH_DEVICE_MAX 1 + +// MIDI 2.0 Host +#define CFG_TUH_MIDI2 1 +#define CFG_TUH_MIDI2_RX_BUFSIZE 512 +#define CFG_TUH_MIDI2_TX_BUFSIZE 512 + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/hw/bsp/rp2040/boards/waveshare_rp2350_usb_a/board.cmake b/hw/bsp/rp2040/boards/waveshare_rp2350_usb_a/board.cmake new file mode 100644 index 0000000000..e888c7fb32 --- /dev/null +++ b/hw/bsp/rp2040/boards/waveshare_rp2350_usb_a/board.cmake @@ -0,0 +1,2 @@ +set(PICO_PLATFORM rp2350-arm-s) +set(PICO_BOARD waveshare_rp2350_usb_a) diff --git a/hw/bsp/rp2040/boards/waveshare_rp2350_usb_a/board.h b/hw/bsp/rp2040/boards/waveshare_rp2350_usb_a/board.h new file mode 100644 index 0000000000..0af8a695f6 --- /dev/null +++ b/hw/bsp/rp2040/boards/waveshare_rp2350_usb_a/board.h @@ -0,0 +1,49 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * This file is part of the TinyUSB stack. + */ + +/* metadata: + name: Waveshare RP2350-USB-A + url: https://www.waveshare.com/wiki/RP2350-USB-A +*/ + +#ifndef TUSB_BOARD_H +#define TUSB_BOARD_H + +#ifdef __cplusplus + extern "C" { +#endif + +//--------------------------------------------------------------------+ +// PIO_USB +//--------------------------------------------------------------------+ +// Waveshare RP2350-USB-A: PIO-USB on GP12 (D+) / GP13 (D-) +// PICO_DEFAULT_PIO_USB_DP_PIN already defined in SDK board header + +#ifdef __cplusplus + } +#endif + +#endif diff --git a/hw/bsp/rp2040/family.cmake b/hw/bsp/rp2040/family.cmake index 2e2cd436ae..31992ebca9 100644 --- a/hw/bsp/rp2040/family.cmake +++ b/hw/bsp/rp2040/family.cmake @@ -100,6 +100,7 @@ target_sources(tinyusb_device_base INTERFACE ${TOP}/src/class/dfu/dfu_rt_device.c ${TOP}/src/class/hid/hid_device.c ${TOP}/src/class/midi/midi_device.c + ${TOP}/src/class/midi/midi2_device.c ${TOP}/src/class/msc/msc_device.c ${TOP}/src/class/mtp/mtp_device.c ${TOP}/src/class/net/ecm_rndis_device.c @@ -122,6 +123,7 @@ target_sources(tinyusb_host_base INTERFACE ${TOP}/src/class/cdc/cdc_host.c ${TOP}/src/class/hid/hid_host.c ${TOP}/src/class/midi/midi_host.c + ${TOP}/src/class/midi/midi2_host.c ${TOP}/src/class/msc/msc_host.c ${TOP}/src/class/vendor/vendor_host.c ) diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt index 00f4660078..219d417c9b 100644 --- a/src/CMakeLists.txt +++ b/src/CMakeLists.txt @@ -15,6 +15,7 @@ function(tinyusb_sources_get OUTPUT_VAR) ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/dfu/dfu_rt_device.c ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/hid/hid_device.c ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/midi/midi_device.c + ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/midi/midi2_device.c ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/msc/msc_device.c ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/mtp/mtp_device.c ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/net/ecm_rndis_device.c @@ -29,6 +30,7 @@ function(tinyusb_sources_get OUTPUT_VAR) ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/cdc/cdc_host.c ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/hid/hid_host.c ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/midi/midi_host.c + ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/midi/midi2_host.c ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/msc/msc_host.c ${CMAKE_CURRENT_FUNCTION_LIST_DIR}/class/vendor/vendor_host.c # typec diff --git a/src/class/midi/midi.h b/src/class/midi/midi.h index cd67640e44..8121ec0164 100644 --- a/src/class/midi/midi.h +++ b/src/class/midi/midi.h @@ -185,6 +185,24 @@ typedef midi_desc_cs_endpoint_n_t(1) midi_desc_cs_endpoint_1jack_t; TU_VERIFY_STATIC(sizeof(midi_desc_cs_endpoint_1jack_t) == 4+1, "size is not correct"); +//--------------------------------------------------------------------+ +// MIDI 2.0 UMP Helpers +//--------------------------------------------------------------------+ + +// Return the number of 32-bit words for a UMP message given its Message Type +static inline uint8_t midi2_ump_word_count(uint8_t mt) { + switch (mt) { + case 0x0: case 0x1: case 0x2: case 0x6: case 0x7: + return 1; + case 0x3: case 0x4: case 0x8: case 0x9: case 0xA: + return 2; + case 0xB: case 0xC: + return 3; + default: // 0x5, 0xD, 0xE, 0xF + return 4; + } +} + //--------------------------------------------------------------------+ // For Internal Driver Use //--------------------------------------------------------------------+ diff --git a/src/class/midi/midi2_device.c b/src/class/midi/midi2_device.c new file mode 100644 index 0000000000..0029737ce2 --- /dev/null +++ b/src/class/midi/midi2_device.c @@ -0,0 +1,614 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * This file is part of the TinyUSB stack. + */ + +#include "tusb_option.h" + +#if CFG_TUD_ENABLED && CFG_TUD_MIDI2 + +#include + +#include "device/usbd.h" +#include "device/usbd_pvt.h" +#include "midi2_device.h" + +//--------------------------------------------------------------------+ +// Weak stubs +//--------------------------------------------------------------------+ +TU_ATTR_WEAK void tud_midi2_rx_cb(uint8_t itf) { (void) itf; } +TU_ATTR_WEAK void tud_midi2_set_itf_cb(uint8_t itf, uint8_t alt) { (void) itf; (void) alt; } +TU_ATTR_WEAK bool tud_midi2_get_req_itf_cb(uint8_t rhport, const tusb_control_request_t* request) { + (void) rhport; (void) request; return false; +} + +//--------------------------------------------------------------------+ +// UMP Stream Message Constants +//--------------------------------------------------------------------+ +// UMP Message Type for Stream messages (bits 31:28) +enum { + MT_STREAM = 0x0F, +}; + +// UMP Stream Status values (10-bit, bits 25:16) +enum { + STREAM_ENDPOINT_DISCOVERY = 0x000, + STREAM_ENDPOINT_INFO = 0x001, + STREAM_EP_NAME = 0x003, + STREAM_PROD_INSTANCE_ID = 0x004, + STREAM_CONFIG_REQUEST = 0x005, + STREAM_CONFIG_NOTIFY = 0x006, + STREAM_FB_DISCOVERY = 0x010, + STREAM_FB_INFO = 0x011, +}; + +// MIDI Protocol values (per USB-MIDI 2.0 spec) +enum { + MIDI_PROTOCOL_MIDI1 = 0x01, + MIDI_PROTOCOL_MIDI2 = 0x02, +}; + +enum { + UMP_VER_MAJOR = 1, + UMP_VER_MINOR = 1, +}; + +// Group Terminal Block descriptor types (USB-MIDI 2.0) +enum { + MIDI2_CS_GRP_TRM_BLOCK = 0x26, + MIDI2_GRP_TRM_BLOCK_HEADER = 0x01, + MIDI2_GRP_TRM_BLOCK_ENTRY = 0x02, +}; + +//--------------------------------------------------------------------+ +// MACRO CONSTANT TYPEDEF +//--------------------------------------------------------------------+ +typedef struct { + uint8_t rhport; + uint8_t itf_num; + uint8_t alt_setting; + uint8_t protocol; + bool negotiated; + + /*------------- From this point, data is not cleared by bus reset -------------*/ + struct { + tu_edpt_stream_t tx; + tu_edpt_stream_t rx; + + uint8_t rx_ff_buf[CFG_TUD_MIDI2_RX_BUFSIZE]; + uint8_t tx_ff_buf[CFG_TUD_MIDI2_TX_BUFSIZE]; + } ep_stream; +} midi2d_interface_t; + +TU_VERIFY_STATIC(CFG_TUD_MIDI2_NUM_GROUPS >= 1 && CFG_TUD_MIDI2_NUM_GROUPS <= 16, + "CFG_TUD_MIDI2_NUM_GROUPS must be 1..16"); +TU_VERIFY_STATIC(CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS >= 1 && CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS <= 32, + "CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS must be 1..32"); + +#define ITF_MEM_RESET_SIZE offsetof(midi2d_interface_t, ep_stream) + +static midi2d_interface_t _midi2d_itf[CFG_TUD_MIDI2]; + +#if CFG_TUD_EDPT_DEDICATED_HWFIFO == 0 +typedef struct { + TUD_EPBUF_DEF(epin, CFG_TUD_MIDI2_TX_EPSIZE); + TUD_EPBUF_DEF(epout, CFG_TUD_MIDI2_RX_EPSIZE); +} midi2d_epbuf_t; + +CFG_TUD_MEM_SECTION static midi2d_epbuf_t _midi2d_epbuf[CFG_TUD_MIDI2]; +#endif + +// Default Group Terminal Block descriptor (USB-MIDI 2.0 spec, Table 5-5/5-6) +static const uint8_t _default_gtb_desc[] = { + // GTB Header (5 bytes) + 5, // bLength + MIDI2_CS_GRP_TRM_BLOCK, // bDescriptorType + MIDI2_GRP_TRM_BLOCK_HEADER, // bDescriptorSubtype + U16_TO_U8S_LE(18), // wTotalLength (5 + 13 = 18) + + // GTB Entry (13 bytes) + 13, // bLength + MIDI2_CS_GRP_TRM_BLOCK, // bDescriptorType + MIDI2_GRP_TRM_BLOCK_ENTRY, // bDescriptorSubtype + 1, // bGrpTrmBlkID + 0x00, // bGrpTrmBlkType: bidirectional + 0x00, // nGroupTrm: first group (0) + CFG_TUD_MIDI2_NUM_GROUPS, // nNumGroupTrm + 0, // iBlockItem: no string + 0x00, // bMIDIProtocol: unknown/not fixed + 0, 0, // wMaxInputBandwidth: unknown + 0, 0 // wMaxOutputBandwidth: unknown +}; + +//--------------------------------------------------------------------+ +// Protocol Negotiation +//--------------------------------------------------------------------+ +static void _nego_send_ump(midi2d_interface_t* p_midi, const uint32_t* words, uint8_t count) { + tu_edpt_stream_t* ep_tx = &p_midi->ep_stream.tx; + if (!tu_edpt_stream_is_opened(ep_tx)) return; + if (tu_edpt_stream_write_available(ep_tx) < count * 4) return; + tu_edpt_stream_write(ep_tx, words, count * 4); + tu_edpt_stream_write_xfer(ep_tx); +} + +static void _nego_send_endpoint_info(midi2d_interface_t* p_midi) { + uint32_t msg[4] = {0}; + msg[0] = ((uint32_t) MT_STREAM << 28) + | ((uint32_t) STREAM_ENDPOINT_INFO << 16) + | ((uint32_t) UMP_VER_MAJOR << 8) + | (uint32_t) UMP_VER_MINOR; + msg[1] = (UINT32_C(1) << 31) // Static Function Blocks flag + | ((uint32_t)(CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS & 0x7F) << 24) + | (UINT32_C(1) << 9) // MIDI 2.0 Protocol capability + | (UINT32_C(1) << 8); // MIDI 1.0 Protocol capability + _nego_send_ump(p_midi, msg, 4); +} + +static void _nego_send_stream_text(midi2d_interface_t* p_midi, uint16_t status, const char* str) { + if (!str || str[0] == '\0') return; + + uint16_t total_len = (uint16_t) strlen(str); + uint16_t offset = 0; + + while (offset < total_len) { + uint16_t remaining = total_len - offset; + uint8_t n = (uint8_t)((remaining > 14) ? 14 : remaining); + bool is_first = (offset == 0); + bool is_last = (remaining <= 14); + + uint8_t form; + if (is_first && is_last) form = 0; + else if (is_first) form = 1; + else if (is_last) form = 3; + else form = 2; + + uint32_t msg[4] = {0}; + msg[0] = ((uint32_t) MT_STREAM << 28) + | ((uint32_t) form << 26) + | ((uint32_t) status << 16); + + const char* p = str + offset; + if (n > 0) msg[0] |= ((uint32_t)(uint8_t) p[0] << 8); + if (n > 1) msg[0] |= (uint32_t)(uint8_t) p[1]; + for (uint8_t i = 2; i < n; i++) { + uint8_t word_idx = (uint8_t)(1 + (i - 2) / 4); + uint8_t shift = (uint8_t)(24 - ((i - 2) % 4) * 8); + msg[word_idx] |= ((uint32_t)(uint8_t) p[i] << shift); + } + + _nego_send_ump(p_midi, msg, 4); + offset += n; + } +} + +static void _nego_send_config_notify(midi2d_interface_t* p_midi, uint8_t protocol) { + uint32_t msg[4] = {0}; + msg[0] = ((uint32_t) MT_STREAM << 28) + | ((uint32_t) STREAM_CONFIG_NOTIFY << 16) + | ((uint32_t) protocol << 8); + _nego_send_ump(p_midi, msg, 4); +} + +static void _nego_send_fb_info(midi2d_interface_t* p_midi, uint8_t fb_idx) { + uint32_t msg[4] = {0}; + msg[0] = ((uint32_t) MT_STREAM << 28) + | ((uint32_t) STREAM_FB_INFO << 16) + | (UINT32_C(1) << 15) + | ((uint32_t) fb_idx << 8) + | 0x02; // bDirection: bidirectional + msg[1] = ((uint32_t) 0 << 24) // bFirstGroup + | ((uint32_t) CFG_TUD_MIDI2_NUM_GROUPS << 16); + _nego_send_ump(p_midi, msg, 4); +} + +static void _nego_handle_stream_msg(midi2d_interface_t* p_midi, const uint32_t* words) { + uint16_t status = (words[0] >> 16) & 0x3FF; + + switch (status) { + case STREAM_ENDPOINT_DISCOVERY: + _nego_send_endpoint_info(p_midi); + _nego_send_stream_text(p_midi, STREAM_EP_NAME, CFG_TUD_MIDI2_EP_NAME); + _nego_send_stream_text(p_midi, STREAM_PROD_INSTANCE_ID, CFG_TUD_MIDI2_PRODUCT_ID); + break; + + case STREAM_CONFIG_REQUEST: { + uint8_t req_proto = (words[0] >> 8) & 0xFF; + if (req_proto == MIDI_PROTOCOL_MIDI1 || req_proto == MIDI_PROTOCOL_MIDI2) { + p_midi->protocol = req_proto; + } + _nego_send_config_notify(p_midi, p_midi->protocol); + p_midi->negotiated = true; + break; + } + + case STREAM_FB_DISCOVERY: { + uint8_t fb_idx = (words[0] >> 8) & 0xFF; + if (fb_idx == 0xFF) { + for (uint8_t f = 0; f < CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS; f++) { + _nego_send_fb_info(p_midi, f); + } + } else if (fb_idx < CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS) { + _nego_send_fb_info(p_midi, fb_idx); + } + break; + } + + default: + break; + } +} + +static void _nego_process_rx(midi2d_interface_t* p_midi) { + tu_edpt_stream_t* ep_rx = &p_midi->ep_stream.rx; + uint8_t first_byte; + + while (tu_edpt_stream_peek(ep_rx, &first_byte)) { + uint8_t mt = (first_byte >> 4) & 0x0F; + uint8_t pkt_words = midi2_ump_word_count(mt); + uint32_t pkt_bytes = (uint32_t)pkt_words * 4; + + if (mt != MT_STREAM) break; + if (tu_edpt_stream_read_available(ep_rx) < pkt_bytes) break; + + uint32_t buf[4] = {0}; + tu_edpt_stream_read(ep_rx, buf, pkt_bytes); + _nego_handle_stream_msg(p_midi, buf); + } +} + +//--------------------------------------------------------------------+ +// READ API +//--------------------------------------------------------------------+ +bool tud_midi2_n_mounted(uint8_t itf) { + TU_VERIFY(itf < CFG_TUD_MIDI2, false); + midi2d_interface_t* p_midi = &_midi2d_itf[itf]; + return tu_edpt_stream_is_opened(&p_midi->ep_stream.tx) && + tu_edpt_stream_is_opened(&p_midi->ep_stream.rx); +} + +uint32_t tud_midi2_n_available(uint8_t itf) { + TU_VERIFY(itf < CFG_TUD_MIDI2, 0); + midi2d_interface_t* p_midi = &_midi2d_itf[itf]; + return tu_edpt_stream_read_available(&p_midi->ep_stream.rx) / 4; +} + +uint32_t tud_midi2_n_ump_read(uint8_t itf, uint32_t* words, uint32_t max_words) { + TU_VERIFY(itf < CFG_TUD_MIDI2 && words != NULL && max_words > 0, 0); + midi2d_interface_t* p_midi = &_midi2d_itf[itf]; + tu_edpt_stream_t* ep_rx = &p_midi->ep_stream.rx; + + uint32_t total_read = 0; + while (total_read < max_words) { + uint8_t first_byte; + if (!tu_edpt_stream_peek(ep_rx, &first_byte)) break; + + uint8_t mt = (first_byte >> 4) & 0x0F; + uint8_t pkt_words = midi2_ump_word_count(mt); + + if (total_read + pkt_words > max_words) break; + if (tu_edpt_stream_read_available(ep_rx) < (uint32_t)pkt_words * 4) break; + + tu_edpt_stream_read(ep_rx, &words[total_read], pkt_words * 4); + total_read += pkt_words; + } + + return total_read; +} + +bool tud_midi2_n_packet_read(uint8_t itf, uint8_t packet[4]) { + TU_VERIFY(itf < CFG_TUD_MIDI2, false); + midi2d_interface_t* p_midi = &_midi2d_itf[itf]; + return 4 == tu_edpt_stream_read(&p_midi->ep_stream.rx, packet, 4); +} + +//--------------------------------------------------------------------+ +// WRITE API +//--------------------------------------------------------------------+ +uint32_t tud_midi2_n_ump_write(uint8_t itf, const uint32_t* words, uint32_t count) { + TU_VERIFY(itf < CFG_TUD_MIDI2 && words != NULL && count > 0, 0); + midi2d_interface_t* p_midi = &_midi2d_itf[itf]; + tu_edpt_stream_t* ep_tx = &p_midi->ep_stream.tx; + TU_VERIFY(tu_edpt_stream_is_opened(ep_tx), 0); + + uint32_t written = 0; + while (written < count) { + uint8_t mt = (uint8_t)((words[written] >> 28) & 0x0F); + uint8_t pkt_words = midi2_ump_word_count(mt); + + if (written + pkt_words > count) break; + if (tu_edpt_stream_write_available(ep_tx) < pkt_words * 4) break; + + tu_edpt_stream_write(ep_tx, &words[written], pkt_words * 4); + written += pkt_words; + } + + (void) tu_edpt_stream_write_xfer(ep_tx); + return written; +} + +bool tud_midi2_n_packet_write(uint8_t itf, const uint8_t packet[4]) { + TU_VERIFY(itf < CFG_TUD_MIDI2, false); + midi2d_interface_t* p_midi = &_midi2d_itf[itf]; + tu_edpt_stream_t* ep_tx = &p_midi->ep_stream.tx; + TU_VERIFY(tu_edpt_stream_is_opened(ep_tx), false); + TU_VERIFY(tu_edpt_stream_write_available(ep_tx) >= 4, false); + TU_VERIFY(tu_edpt_stream_write(ep_tx, packet, 4) > 0, false); + (void) tu_edpt_stream_write_xfer(ep_tx); + return true; +} + +//--------------------------------------------------------------------+ +// STATE GETTERS +//--------------------------------------------------------------------+ +uint8_t tud_midi2_n_alt_setting(uint8_t itf) { + TU_VERIFY(itf < CFG_TUD_MIDI2, 0); + return _midi2d_itf[itf].alt_setting; +} + +bool tud_midi2_n_negotiated(uint8_t itf) { + TU_VERIFY(itf < CFG_TUD_MIDI2, false); + return _midi2d_itf[itf].negotiated; +} + +uint8_t tud_midi2_n_protocol(uint8_t itf) { + TU_VERIFY(itf < CFG_TUD_MIDI2, 0); + return _midi2d_itf[itf].protocol; +} + +//--------------------------------------------------------------------+ +// USBD Driver API +//--------------------------------------------------------------------+ +void midi2d_init(void) { + tu_memclr(_midi2d_itf, sizeof(_midi2d_itf)); + for (uint8_t i = 0; i < CFG_TUD_MIDI2; i++) { + midi2d_interface_t* p_midi = &_midi2d_itf[i]; + p_midi->protocol = MIDI_PROTOCOL_MIDI2; + + #if CFG_TUD_EDPT_DEDICATED_HWFIFO + uint8_t* epout_buf = NULL; + uint8_t* epin_buf = NULL; + #else + midi2d_epbuf_t* p_epbuf = &_midi2d_epbuf[i]; + uint8_t* epout_buf = p_epbuf->epout; + uint8_t* epin_buf = p_epbuf->epin; + #endif + + tu_edpt_stream_init(&p_midi->ep_stream.rx, false, false, false, + p_midi->ep_stream.rx_ff_buf, CFG_TUD_MIDI2_RX_BUFSIZE, epout_buf); + tu_edpt_stream_init(&p_midi->ep_stream.tx, false, true, false, + p_midi->ep_stream.tx_ff_buf, CFG_TUD_MIDI2_TX_BUFSIZE, epin_buf); + } +} + +bool midi2d_deinit(void) { + for (uint8_t i = 0; i < CFG_TUD_MIDI2; i++) { + midi2d_interface_t* p_midi = &_midi2d_itf[i]; + tu_edpt_stream_deinit(&p_midi->ep_stream.rx); + tu_edpt_stream_deinit(&p_midi->ep_stream.tx); + } + return true; +} + +void midi2d_reset(uint8_t rhport) { + (void) rhport; + for (uint8_t i = 0; i < CFG_TUD_MIDI2; i++) { + midi2d_interface_t* p_midi = &_midi2d_itf[i]; + tu_memclr(p_midi, ITF_MEM_RESET_SIZE); + + tu_edpt_stream_clear(&p_midi->ep_stream.rx); + tu_edpt_stream_close(&p_midi->ep_stream.rx); + + tu_edpt_stream_clear(&p_midi->ep_stream.tx); + tu_edpt_stream_close(&p_midi->ep_stream.tx); + } +} + +TU_ATTR_ALWAYS_INLINE static inline uint8_t find_midi2_itf(uint8_t ep_addr) { + for (uint8_t idx = 0; idx < CFG_TUD_MIDI2; idx++) { + const midi2d_interface_t* p_midi = &_midi2d_itf[idx]; + if (ep_addr == p_midi->ep_stream.rx.ep_addr || ep_addr == p_midi->ep_stream.tx.ep_addr) { + return idx; + } + } + return TUSB_INDEX_INVALID_8; +} + +static uint8_t find_midi2_itf_by_num(uint8_t itf_num) { + for (uint8_t idx = 0; idx < CFG_TUD_MIDI2; idx++) { + if (_midi2d_itf[idx].itf_num == itf_num) return idx; + } + return TUSB_INDEX_INVALID_8; +} + +uint16_t midi2d_open(uint8_t rhport, const tusb_desc_interface_t* desc_itf, uint16_t max_len) { + const uint8_t* p_desc = (const uint8_t*) desc_itf; + const uint8_t* desc_end = p_desc + max_len; + + // 1st Interface: Audio Control v1 (optional) + if (TUSB_CLASS_AUDIO == desc_itf->bInterfaceClass && + AUDIO_SUBCLASS_CONTROL == desc_itf->bInterfaceSubClass && + AUDIO_FUNC_PROTOCOL_CODE_UNDEF == desc_itf->bInterfaceProtocol) { + p_desc = tu_desc_next(desc_itf); + while (tu_desc_in_bounds(p_desc, desc_end) && TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc)) { + p_desc = tu_desc_next(p_desc); + } + } + + // 2nd Interface: MIDI Streaming + TU_VERIFY(TUSB_DESC_INTERFACE == tu_desc_type(p_desc), 0); + const tusb_desc_interface_t* desc_midi = (const tusb_desc_interface_t*) p_desc; + + TU_VERIFY(TUSB_CLASS_AUDIO == desc_midi->bInterfaceClass && + AUDIO_SUBCLASS_MIDI_STREAMING == desc_midi->bInterfaceSubClass && + AUDIO_FUNC_PROTOCOL_CODE_UNDEF == desc_midi->bInterfaceProtocol, + 0); + + uint8_t idx = find_midi2_itf(0); + TU_ASSERT(idx < CFG_TUD_MIDI2, 0); + midi2d_interface_t* p_midi = &_midi2d_itf[idx]; + + p_midi->rhport = rhport; + p_midi->itf_num = desc_midi->bInterfaceNumber; + p_midi->alt_setting = 0; + p_midi->protocol = MIDI_PROTOCOL_MIDI2; + p_midi->negotiated = false; + + p_desc = tu_desc_next(p_desc); + + // Skip class-specific descriptors + while (tu_desc_in_bounds(p_desc, desc_end) && TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc)) { + p_desc = tu_desc_next(p_desc); + } + + // Find and open endpoint descriptors + uint8_t found_ep = 0; + while ((found_ep < desc_midi->bNumEndpoints) && tu_desc_in_bounds(p_desc, desc_end)) { + if (TUSB_DESC_ENDPOINT == tu_desc_type(p_desc)) { + const tusb_desc_endpoint_t* desc_ep = (const tusb_desc_endpoint_t*) p_desc; + TU_ASSERT(usbd_edpt_open(rhport, desc_ep), 0); + const uint8_t ep_addr = desc_ep->bEndpointAddress; + + if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN) { + tu_edpt_stream_open(&p_midi->ep_stream.tx, rhport, desc_ep, CFG_TUD_MIDI2_TX_EPSIZE); + tu_edpt_stream_clear(&p_midi->ep_stream.tx); + } else { + tu_edpt_stream_open(&p_midi->ep_stream.rx, rhport, desc_ep, tu_edpt_packet_size(desc_ep)); + tu_edpt_stream_clear(&p_midi->ep_stream.rx); + TU_ASSERT(tu_edpt_stream_read_xfer(&p_midi->ep_stream.rx) > 0, 0); + } + + found_ep++; + } + + p_desc = tu_desc_next(p_desc); + } + + // Skip remaining descriptors (alt setting 1, CS endpoints, GTB) + // Stop at any interface descriptor that is not our MIDI Streaming alt setting + while (tu_desc_in_bounds(p_desc, desc_end)) { + uint8_t dtype = tu_desc_type(p_desc); + + if (dtype == TUSB_DESC_INTERFACE) { + const tusb_desc_interface_t* next_itf = (const tusb_desc_interface_t*) p_desc; + // Continue only if this is an alternate setting of our own interface + if (next_itf->bInterfaceNumber != desc_midi->bInterfaceNumber) break; + } else if (dtype != TUSB_DESC_CS_INTERFACE && dtype != TUSB_DESC_CS_ENDPOINT && + dtype != TUSB_DESC_ENDPOINT) { + break; + } + + p_desc = tu_desc_next(p_desc); + } + + return (uint16_t)(p_desc - (const uint8_t*) desc_itf); +} + +bool midi2d_control_xfer_cb(uint8_t rhport, uint8_t stage, const tusb_control_request_t* request) { + TU_LOG2("MIDI2 ctrl: stage=%u bRequest=0x%02X wValue=0x%04X wIndex=0x%04X wLength=%u\r\n", + stage, request->bRequest, request->wValue, request->wIndex, request->wLength); + + if (stage != CONTROL_STAGE_SETUP) return true; + + switch (request->bRequest) { + case TUSB_REQ_SET_INTERFACE: { + uint8_t itf_num = tu_u16_low(request->wIndex); + uint8_t alt = tu_u16_low(request->wValue); + + // Only Alt Setting 0 (MIDI 1.0) and 1 (UMP) are valid + if (alt > 1) return false; + + uint8_t idx = find_midi2_itf_by_num(itf_num); + if (idx >= CFG_TUD_MIDI2) return false; + + midi2d_interface_t* p_midi = &_midi2d_itf[idx]; + p_midi->alt_setting = alt; + + tu_edpt_stream_clear(&p_midi->ep_stream.rx); + tu_edpt_stream_clear(&p_midi->ep_stream.tx); + + if (alt == 1) { + p_midi->negotiated = false; + p_midi->protocol = MIDI_PROTOCOL_MIDI2; + } + + // Re-arm RX endpoint for receiving data after alt setting change + tu_edpt_stream_read_xfer(&p_midi->ep_stream.rx); + + tud_midi2_set_itf_cb(idx, alt); + tud_control_status(rhport, request); + return true; + } + + case TUSB_REQ_GET_DESCRIPTOR: { + // wValue: descriptor type (high) | index (low) + // 0x26 = CS_GRP_TRM_BLOCK, index 0x01 + if (request->wValue == ((uint16_t)MIDI2_CS_GRP_TRM_BLOCK << 8 | 0x01)) { + if (tud_midi2_get_req_itf_cb(rhport, request)) return true; + + uint16_t len = request->wLength; + if (len > sizeof(_default_gtb_desc)) { + len = sizeof(_default_gtb_desc); + } + tud_control_xfer(rhport, request, (void*)(uintptr_t) _default_gtb_desc, len); + return true; + } + return false; + } + + default: + return false; + } +} + +bool midi2d_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes) { + (void) rhport; + + uint8_t idx = find_midi2_itf(ep_addr); + TU_ASSERT(idx < CFG_TUD_MIDI2); + midi2d_interface_t* p_midi = &_midi2d_itf[idx]; + + tu_edpt_stream_t* ep_rx = &p_midi->ep_stream.rx; + tu_edpt_stream_t* ep_tx = &p_midi->ep_stream.tx; + + if (ep_addr == ep_rx->ep_addr) { + if (result == XFER_RESULT_SUCCESS) { + tu_edpt_stream_read_xfer_complete(ep_rx, xferred_bytes); + if (p_midi->alt_setting == 1) { + _nego_process_rx(p_midi); + } + tud_midi2_rx_cb(idx); + } + tu_edpt_stream_read_xfer(ep_rx); + } else if (ep_addr == ep_tx->ep_addr && result == XFER_RESULT_SUCCESS) { + if (0 == tu_edpt_stream_write_xfer(ep_tx)) { + (void) tu_edpt_stream_write_zlp_if_needed(ep_tx, xferred_bytes); + } + } else { + return false; + } + + return true; +} + +#endif diff --git a/src/class/midi/midi2_device.h b/src/class/midi/midi2_device.h new file mode 100644 index 0000000000..dac1f01240 --- /dev/null +++ b/src/class/midi/midi2_device.h @@ -0,0 +1,125 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * This file is part of the TinyUSB stack. + */ + +#ifndef TUSB_MIDI2_DEVICE_H_ +#define TUSB_MIDI2_DEVICE_H_ + +#include "class/audio/audio.h" +#include "midi.h" + +//--------------------------------------------------------------------+ +// Class Driver Configuration +//--------------------------------------------------------------------+ + +// Config defaults are in tusb_option.h: +// CFG_TUD_MIDI2_RX_EPSIZE, CFG_TUD_MIDI2_TX_EPSIZE, +// CFG_TUD_MIDI2_RX_BUFSIZE, CFG_TUD_MIDI2_TX_BUFSIZE, +// CFG_TUD_MIDI2_NUM_GROUPS, CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS, +// CFG_TUD_MIDI2_EP_NAME, CFG_TUD_MIDI2_PRODUCT_ID + +#ifdef __cplusplus +extern "C" { +#endif + +//--------------------------------------------------------------------+ +// Application Callback API (weak, optional) +//--------------------------------------------------------------------+ +void tud_midi2_rx_cb(uint8_t itf); +void tud_midi2_set_itf_cb(uint8_t itf, uint8_t alt); +bool tud_midi2_get_req_itf_cb(uint8_t rhport, const tusb_control_request_t* request); + +//--------------------------------------------------------------------+ +// Application API (Multiple Interfaces) +//--------------------------------------------------------------------+ + +bool tud_midi2_n_mounted(uint8_t itf); +uint32_t tud_midi2_n_available(uint8_t itf); +uint8_t tud_midi2_n_alt_setting(uint8_t itf); +bool tud_midi2_n_negotiated(uint8_t itf); +uint8_t tud_midi2_n_protocol(uint8_t itf); + +uint32_t tud_midi2_n_ump_read(uint8_t itf, uint32_t* words, uint32_t max_words); +uint32_t tud_midi2_n_ump_write(uint8_t itf, const uint32_t* words, uint32_t count); + +bool tud_midi2_n_packet_read(uint8_t itf, uint8_t packet[4]); +bool tud_midi2_n_packet_write(uint8_t itf, const uint8_t packet[4]); + +//--------------------------------------------------------------------+ +// Application API (Single Interface) +//--------------------------------------------------------------------+ +TU_ATTR_ALWAYS_INLINE static inline bool tud_midi2_mounted(void) { + return tud_midi2_n_mounted(0); +} + +TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_midi2_available(void) { + return tud_midi2_n_available(0); +} + +TU_ATTR_ALWAYS_INLINE static inline uint8_t tud_midi2_alt_setting(void) { + return tud_midi2_n_alt_setting(0); +} + +TU_ATTR_ALWAYS_INLINE static inline bool tud_midi2_negotiated(void) { + return tud_midi2_n_negotiated(0); +} + +TU_ATTR_ALWAYS_INLINE static inline uint8_t tud_midi2_protocol(void) { + return tud_midi2_n_protocol(0); +} + +TU_ATTR_ALWAYS_INLINE static inline uint32_t +tud_midi2_ump_read(uint32_t* words, uint32_t max_words) { + return tud_midi2_n_ump_read(0, words, max_words); +} + +TU_ATTR_ALWAYS_INLINE static inline uint32_t +tud_midi2_ump_write(const uint32_t* words, uint32_t count) { + return tud_midi2_n_ump_write(0, words, count); +} + +TU_ATTR_ALWAYS_INLINE static inline bool tud_midi2_packet_read(uint8_t packet[4]) { + return tud_midi2_n_packet_read(0, packet); +} + +TU_ATTR_ALWAYS_INLINE static inline bool tud_midi2_packet_write(const uint8_t packet[4]) { + return tud_midi2_n_packet_write(0, packet); +} + +//--------------------------------------------------------------------+ +// Internal Class Driver API +//--------------------------------------------------------------------+ +void midi2d_init(void); +bool midi2d_deinit(void); +void midi2d_reset(uint8_t rhport); +uint16_t midi2d_open(uint8_t rhport, const tusb_desc_interface_t* itf_desc, uint16_t max_len); +bool midi2d_control_xfer_cb(uint8_t rhport, uint8_t stage, const tusb_control_request_t* request); +bool midi2d_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/src/class/midi/midi2_host.c b/src/class/midi/midi2_host.c new file mode 100644 index 0000000000..5b9f98f8bc --- /dev/null +++ b/src/class/midi/midi2_host.c @@ -0,0 +1,559 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * This file is part of the TinyUSB stack. + */ + +#include "tusb_option.h" + +#if (CFG_TUH_ENABLED && CFG_TUH_MIDI2) + +#include "host/usbh.h" +#include "host/usbh_pvt.h" +#include "midi2_host.h" + +#define TU_LOG_DRV(...) TU_LOG(CFG_TUH_MIDI2_LOG_LEVEL, __VA_ARGS__) + +//--------------------------------------------------------------------+ +// Weak stubs for application callbacks +//--------------------------------------------------------------------+ + +TU_ATTR_WEAK void tuh_midi2_descriptor_cb(uint8_t idx, const tuh_midi2_descriptor_cb_t *desc_cb_data) { + (void) idx; (void) desc_cb_data; +} + +TU_ATTR_WEAK void tuh_midi2_mount_cb(uint8_t idx, const tuh_midi2_mount_cb_t *mount_cb_data) { + (void) idx; (void) mount_cb_data; +} + +TU_ATTR_WEAK void tuh_midi2_rx_cb(uint8_t idx, uint32_t xferred_bytes) { + (void) idx; (void) xferred_bytes; +} + +TU_ATTR_WEAK void tuh_midi2_tx_cb(uint8_t idx, uint32_t xferred_bytes) { + (void) idx; (void) xferred_bytes; +} + +TU_ATTR_WEAK void tuh_midi2_umount_cb(uint8_t idx) { + (void) idx; +} + +//--------------------------------------------------------------------+ +// Internal structure and state +//--------------------------------------------------------------------+ + +typedef struct { + uint8_t daddr; + uint8_t bInterfaceNumber; + + uint8_t alt_setting_current; + + uint8_t protocol_version; + uint8_t bcdMSC_hi, bcdMSC_lo; + uint8_t rx_cable_count_alt0; + uint8_t tx_cable_count_alt0; + uint8_t rx_cable_count_alt1; + uint8_t tx_cable_count_alt1; + + struct { + tu_edpt_stream_t tx; + tu_edpt_stream_t rx; + + uint8_t rx_ff_buf[CFG_TUH_MIDI2_RX_BUFSIZE]; + uint8_t tx_ff_buf[CFG_TUH_MIDI2_TX_BUFSIZE]; + } ep_stream; + + bool mounted; +} midih2_interface_t; + +static midih2_interface_t _midi2_host[CFG_TUH_MIDI2]; + +#if CFG_TUH_EDPT_DEDICATED_HWFIFO == 0 +typedef struct { + TUH_EPBUF_DEF(tx, TUH_EPSIZE_BULK_MAX); + TUH_EPBUF_DEF(rx, TUH_EPSIZE_BULK_MAX); +} midih2_epbuf_t; + +CFG_TUH_MEM_SECTION static midih2_epbuf_t _midi2_epbuf[CFG_TUH_MIDI2]; +#endif + +//--------------------------------------------------------------------+ +// Helper functions +//--------------------------------------------------------------------+ + +static inline uint8_t find_new_midi2_index(void) { + for (uint8_t idx = 0; idx < CFG_TUH_MIDI2; idx++) { + if (_midi2_host[idx].daddr == 0) { + return idx; + } + } + return TUSB_INDEX_INVALID_8; +} + +static inline uint8_t get_idx_by_ep_addr(uint8_t daddr, uint8_t ep_addr) { + for (uint8_t idx = 0; idx < CFG_TUH_MIDI2; idx++) { + const midih2_interface_t *p_midi = &_midi2_host[idx]; + if ((p_midi->daddr == daddr) && + (ep_addr == p_midi->ep_stream.rx.ep_addr || ep_addr == p_midi->ep_stream.tx.ep_addr)) { + return idx; + } + } + return TUSB_INDEX_INVALID_8; +} + +//--------------------------------------------------------------------+ +// Descriptor parsing +//--------------------------------------------------------------------+ + +// Parse Alt Setting 0 (MIDI 1.0) descriptors. Returns pointer past last consumed descriptor. +static const uint8_t* midih2_parse_descriptors_alt0(midih2_interface_t *p_midi, + const tusb_desc_interface_t *desc_itf, const uint8_t *desc_end) { + TU_VERIFY(AUDIO_SUBCLASS_MIDI_STREAMING == desc_itf->bInterfaceSubClass, NULL); + + p_midi->bInterfaceNumber = desc_itf->bInterfaceNumber; + + const uint8_t *p_desc = (const uint8_t *) desc_itf; + p_desc = tu_desc_next(p_desc); + + uint8_t rx_cable_count = 0; + uint8_t tx_cable_count = 0; + bool found_new_interface = false; + + while (tu_desc_in_bounds(p_desc, desc_end) && !found_new_interface) { + switch (tu_desc_type(p_desc)) { + case TUSB_DESC_INTERFACE: + found_new_interface = true; + break; + + case TUSB_DESC_ENDPOINT: { + const tusb_desc_endpoint_t *p_ep = (const tusb_desc_endpoint_t *) p_desc; + + TU_ASSERT(tuh_edpt_open(p_midi->daddr, p_ep), NULL); + if (tu_edpt_dir(p_ep->bEndpointAddress) == TUSB_DIR_IN) { + tu_edpt_stream_open(&p_midi->ep_stream.rx, p_midi->daddr, p_ep, tu_edpt_packet_size(p_ep)); + tu_edpt_stream_clear(&p_midi->ep_stream.rx); + } else { + tu_edpt_stream_open(&p_midi->ep_stream.tx, p_midi->daddr, p_ep, tu_edpt_packet_size(p_ep)); + tu_edpt_stream_clear(&p_midi->ep_stream.tx); + } + + p_desc = tu_desc_next(p_desc); + if (tu_desc_in_bounds(p_desc, desc_end) && tu_desc_type(p_desc) == TUSB_DESC_CS_ENDPOINT) { + const midi_desc_cs_endpoint_t *p_csep = (const midi_desc_cs_endpoint_t *) p_desc; + if (tu_edpt_dir(p_ep->bEndpointAddress) == TUSB_DIR_OUT) { + tx_cable_count = p_csep->bNumEmbMIDIJack; + } else { + rx_cable_count = p_csep->bNumEmbMIDIJack; + } + } + break; + } + + default: + break; + } + + if (!found_new_interface) { + p_desc = tu_desc_next(p_desc); + } + } + + p_midi->rx_cable_count_alt0 = rx_cable_count; + p_midi->tx_cable_count_alt0 = tx_cable_count; + return p_desc; +} + +// Parse Alt Setting 1 (MIDI 2.0 UMP) descriptors. Returns pointer past last consumed descriptor. +static const uint8_t* midih2_parse_descriptors_alt1(midih2_interface_t *p_midi, + const tusb_desc_interface_t *desc_itf, const uint8_t *desc_end) { + TU_VERIFY(AUDIO_SUBCLASS_MIDI_STREAMING == desc_itf->bInterfaceSubClass, NULL); + TU_VERIFY(desc_itf->bAlternateSetting == 1, NULL); + + const uint8_t *p_desc = (const uint8_t *) desc_itf; + p_desc = tu_desc_next(p_desc); + + uint8_t rx_cable_count = 0; + uint8_t tx_cable_count = 0; + bool found_new_interface = false; + + while (tu_desc_in_bounds(p_desc, desc_end) && !found_new_interface) { + switch (tu_desc_type(p_desc)) { + case TUSB_DESC_INTERFACE: + found_new_interface = true; + break; + + case TUSB_DESC_CS_INTERFACE: + if (tu_desc_subtype(p_desc) == MIDI_CS_INTERFACE_HEADER) { + // bcdMSC at offset 3-4 in CS Interface Header + const uint8_t *bcd_ptr = p_desc + 3; + p_midi->bcdMSC_lo = bcd_ptr[0]; + p_midi->bcdMSC_hi = bcd_ptr[1]; + if (p_midi->bcdMSC_hi == 0x02) { // bcdMSC 0x0200 = USB-MIDI 2.0 + p_midi->protocol_version = 1; + } + } + break; + + case TUSB_DESC_ENDPOINT: { + const tusb_desc_endpoint_t *p_ep = (const tusb_desc_endpoint_t *) p_desc; + p_desc = tu_desc_next(p_desc); + + if (tu_desc_in_bounds(p_desc, desc_end) && tu_desc_type(p_desc) == TUSB_DESC_CS_ENDPOINT) { + // MIDI 2.0 CS Endpoint General 2.0: bNumGrpTrmBlk at offset 3 + if (p_desc[0] >= 4 && p_desc[2] == MIDI_CS_ENDPOINT_GENERAL_2_0) { + uint8_t num_grp_trm_blk = p_desc[3]; + if (tu_edpt_dir(p_ep->bEndpointAddress) == TUSB_DIR_OUT) { + tx_cable_count = num_grp_trm_blk; + } else { + rx_cable_count = num_grp_trm_blk; + } + } + } + break; + } + + default: + break; + } + + if (!found_new_interface) { + p_desc = tu_desc_next(p_desc); + } + } + + p_midi->rx_cable_count_alt1 = rx_cable_count; + p_midi->tx_cable_count_alt1 = tx_cable_count; + return p_desc; +} + +//--------------------------------------------------------------------+ +// Auto-selection logic +//--------------------------------------------------------------------+ + +static void midih2_auto_select_alt_setting(midih2_interface_t *p_midi) { + p_midi->alt_setting_current = 0; + if (p_midi->protocol_version == 1) { + p_midi->alt_setting_current = 1; + } +} + +//--------------------------------------------------------------------+ +// Init/Deinit +//--------------------------------------------------------------------+ + +bool midih2_init(void) { + tu_memclr(&_midi2_host, sizeof(_midi2_host)); + for (int inst = 0; inst < CFG_TUH_MIDI2; inst++) { + midih2_interface_t *p_midi = &_midi2_host[inst]; + + #if CFG_TUH_EDPT_DEDICATED_HWFIFO + uint8_t* rx_buf = NULL; + uint8_t* tx_buf = NULL; + #else + uint8_t* rx_buf = _midi2_epbuf[inst].rx; + uint8_t* tx_buf = _midi2_epbuf[inst].tx; + #endif + + tu_edpt_stream_init(&p_midi->ep_stream.rx, true, false, false, + p_midi->ep_stream.rx_ff_buf, CFG_TUH_MIDI2_RX_BUFSIZE, rx_buf); + tu_edpt_stream_init(&p_midi->ep_stream.tx, true, true, false, + p_midi->ep_stream.tx_ff_buf, CFG_TUH_MIDI2_TX_BUFSIZE, tx_buf); + } + return true; +} + +bool midih2_deinit(void) { + for (size_t i = 0; i < CFG_TUH_MIDI2; i++) { + midih2_interface_t* p_midi = &_midi2_host[i]; + tu_edpt_stream_deinit(&p_midi->ep_stream.rx); + tu_edpt_stream_deinit(&p_midi->ep_stream.tx); + } + return true; +} + +//--------------------------------------------------------------------+ +// Class driver callbacks +//--------------------------------------------------------------------+ + +uint16_t midih2_open(uint8_t rhport, uint8_t dev_addr, const tusb_desc_interface_t *desc_itf, uint16_t max_len) { + (void) rhport; + + TU_VERIFY(TUSB_CLASS_AUDIO == desc_itf->bInterfaceClass, 0); + + // For Alt Setting 1, reuse existing slot for same device+interface + uint8_t idx = TUSB_INDEX_INVALID_8; + if (desc_itf->bAlternateSetting > 0) { + for (uint8_t i = 0; i < CFG_TUH_MIDI2; i++) { + if (_midi2_host[i].daddr == dev_addr && + _midi2_host[i].bInterfaceNumber == desc_itf->bInterfaceNumber) { + idx = i; + break; + } + } + } + if (idx == TUSB_INDEX_INVALID_8) { + idx = find_new_midi2_index(); + } + TU_VERIFY(idx < CFG_TUH_MIDI2, 0); + + midih2_interface_t *p_midi = &_midi2_host[idx]; + p_midi->daddr = dev_addr; + + const uint8_t *desc_start = (const uint8_t *) desc_itf; + const uint8_t *desc_end = desc_start + max_len; + + // Skip Audio Control interface and any non-MIDI-Streaming descriptors + // (following midi_host.c pattern from Ha Thach) + if (AUDIO_SUBCLASS_CONTROL == desc_itf->bInterfaceSubClass) { + const uint8_t *p_desc = tu_desc_next((const uint8_t *)desc_itf); + // Skip CS_INTERFACE header + TU_VERIFY(tu_desc_type(p_desc) == TUSB_DESC_CS_INTERFACE, 0); + p_desc = tu_desc_next(p_desc); + desc_itf = (const tusb_desc_interface_t *) p_desc; + // Skip until we find MIDI Streaming interface + while (tu_desc_in_bounds(p_desc, desc_end) && + (desc_itf->bDescriptorType != TUSB_DESC_INTERFACE || + (desc_itf->bInterfaceClass == TUSB_CLASS_AUDIO && + desc_itf->bInterfaceSubClass != AUDIO_SUBCLASS_MIDI_STREAMING))) { + p_desc = tu_desc_next(p_desc); + desc_itf = (const tusb_desc_interface_t *) p_desc; + } + TU_VERIFY(tu_desc_in_bounds(p_desc, desc_end), 0); + TU_VERIFY(TUSB_CLASS_AUDIO == desc_itf->bInterfaceClass, 0); + } + + TU_VERIFY(AUDIO_SUBCLASS_MIDI_STREAMING == desc_itf->bInterfaceSubClass, 0); + + TU_LOG_DRV("MIDI2 opening Interface %u Alt %u (addr = %u)\r\n", + desc_itf->bInterfaceNumber, desc_itf->bAlternateSetting, dev_addr); + + // Dispatch to appropriate parser based on Alt Setting + const uint8_t *p_end = NULL; + if (desc_itf->bAlternateSetting == 0) { + p_end = midih2_parse_descriptors_alt0(p_midi, desc_itf, desc_end); + } else if (desc_itf->bAlternateSetting == 1) { + p_end = midih2_parse_descriptors_alt1(p_midi, desc_itf, desc_end); + } + + // Return number of bytes consumed (following midi_host.c pattern) + uint16_t const parsed_len = (p_end != NULL) ? (uint16_t)(p_end - desc_start) : 0; + return parsed_len; +} + +static void midih2_set_config_complete(midih2_interface_t *p_midi, uint8_t idx) { + uint8_t dev_addr = p_midi->daddr; + + // Invoke descriptor_cb + tuh_midi2_descriptor_cb_t desc_cb = { + .protocol_version = p_midi->protocol_version, + .bcdMSC_hi = p_midi->bcdMSC_hi, + .bcdMSC_lo = p_midi->bcdMSC_lo, + .rx_cable_count = (p_midi->alt_setting_current == 0) ? + p_midi->rx_cable_count_alt0 : p_midi->rx_cable_count_alt1, + .tx_cable_count = (p_midi->alt_setting_current == 0) ? + p_midi->tx_cable_count_alt0 : p_midi->tx_cable_count_alt1, + }; + tuh_midi2_descriptor_cb(idx, &desc_cb); + + // Mark as mounted + TU_LOG_DRV("MIDI2 mounted addr = %u, alt = %u, protocol = %u\r\n", + dev_addr, p_midi->alt_setting_current, p_midi->protocol_version); + p_midi->mounted = true; + + // Invoke mount_cb + tuh_midi2_mount_cb_t mount_cb = { + .daddr = dev_addr, + .bInterfaceNumber = p_midi->bInterfaceNumber, + .protocol_version = p_midi->protocol_version, + .alt_setting_active = p_midi->alt_setting_current, + .rx_cable_count = desc_cb.rx_cable_count, + .tx_cable_count = desc_cb.tx_cable_count, + }; + tuh_midi2_mount_cb(idx, &mount_cb); + + // Prepare RX transfer + tu_edpt_stream_read_xfer(&p_midi->ep_stream.rx); + + // Signal USBH that configuration is complete + usbh_driver_set_config_complete(dev_addr, p_midi->bInterfaceNumber); +} + +static void midih2_set_interface_cb(tuh_xfer_t *xfer) { + uint8_t const dev_addr = xfer->daddr; + uint8_t const itf_num = (uint8_t) tu_le16toh(xfer->setup->wIndex); + + // Find our interface + for (uint8_t idx = 0; idx < CFG_TUH_MIDI2; idx++) { + if (_midi2_host[idx].daddr == dev_addr && _midi2_host[idx].bInterfaceNumber == itf_num) { + if (xfer->result == XFER_RESULT_SUCCESS) { + midih2_set_config_complete(&_midi2_host[idx], idx); + } else { + // SET_INTERFACE failed, fall back to alt 0 + TU_LOG_DRV("MIDI2 SET_INTERFACE failed, falling back to alt 0\r\n"); + _midi2_host[idx].alt_setting_current = 0; + midih2_set_config_complete(&_midi2_host[idx], idx); + } + return; + } + } +} + +bool midih2_set_config(uint8_t dev_addr, uint8_t itf_num) { + uint8_t idx = 0; + for (idx = 0; idx < CFG_TUH_MIDI2; idx++) { + if (_midi2_host[idx].daddr == dev_addr && _midi2_host[idx].bInterfaceNumber == itf_num) { + break; + } + } + + if (idx >= CFG_TUH_MIDI2) { + // Not our interface (e.g. Audio Control) - pass through to next + usbh_driver_set_config_complete(dev_addr, itf_num); + return true; + } + + midih2_interface_t *p_midi = &_midi2_host[idx]; + + // Auto-select alt setting + midih2_auto_select_alt_setting(p_midi); + + // If MIDI 2.0 detected, issue SET_INTERFACE to activate Alt Setting 1 + if (p_midi->alt_setting_current == 1) { + TU_LOG_DRV("MIDI2 requesting SET_INTERFACE alt 1 for itf %u\r\n", itf_num); + TU_ASSERT(tuh_interface_set(dev_addr, itf_num, 1, midih2_set_interface_cb, 0)); + } else { + // MIDI 1.0 only, complete immediately + midih2_set_config_complete(p_midi, idx); + } + + return true; +} + +void midih2_close(uint8_t dev_addr) { + for (uint8_t idx = 0; idx < CFG_TUH_MIDI2; idx++) { + midih2_interface_t *p_midi = &_midi2_host[idx]; + if (p_midi->daddr == dev_addr) { + TU_LOG_DRV(" MIDI2 close addr = %u index = %u\r\n", dev_addr, idx); + tu_edpt_stream_close(&p_midi->ep_stream.rx); + tu_edpt_stream_close(&p_midi->ep_stream.tx); + tuh_midi2_umount_cb(idx); + tu_memclr(p_midi, sizeof(midih2_interface_t)); + } + } +} + +bool midih2_xfer_cb(uint8_t dev_addr, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes) { + uint8_t idx = get_idx_by_ep_addr(dev_addr, ep_addr); + TU_VERIFY(idx < CFG_TUH_MIDI2); + + midih2_interface_t *p_midi = &_midi2_host[idx]; + + if (ep_addr == p_midi->ep_stream.rx.ep_addr) { + if (result == XFER_RESULT_SUCCESS && xferred_bytes > 0) { + tu_edpt_stream_read_xfer_complete(&p_midi->ep_stream.rx, xferred_bytes); + tuh_midi2_rx_cb(idx, xferred_bytes); + } + tu_edpt_stream_read_xfer(&p_midi->ep_stream.rx); + } else if (ep_addr == p_midi->ep_stream.tx.ep_addr) { + tuh_midi2_tx_cb(idx, xferred_bytes); + if (0 == tu_edpt_stream_write_xfer(&p_midi->ep_stream.tx)) { + tu_edpt_stream_write_zlp_if_needed(&p_midi->ep_stream.tx, xferred_bytes); + } + } + + return true; +} + +//--------------------------------------------------------------------+ +// Public API +//--------------------------------------------------------------------+ + +bool tuh_midi2_mounted(uint8_t idx) { + TU_VERIFY(idx < CFG_TUH_MIDI2); + return _midi2_host[idx].mounted; +} + +uint8_t tuh_midi2_get_protocol_version(uint8_t idx) { + TU_VERIFY(idx < CFG_TUH_MIDI2); + return _midi2_host[idx].protocol_version; +} + +uint8_t tuh_midi2_get_alt_setting_active(uint8_t idx) { + TU_VERIFY(idx < CFG_TUH_MIDI2); + return _midi2_host[idx].alt_setting_current; +} + +uint8_t tuh_midi2_get_cable_count(uint8_t idx) { + TU_VERIFY(idx < CFG_TUH_MIDI2); + return (_midi2_host[idx].alt_setting_current == 0) ? + _midi2_host[idx].rx_cable_count_alt0 : _midi2_host[idx].rx_cable_count_alt1; +} + +uint32_t tuh_midi2_ump_read(uint8_t idx, uint32_t* words, uint32_t max_words) { + TU_VERIFY(idx < CFG_TUH_MIDI2 && words && max_words); + + midih2_interface_t *p_midi = &_midi2_host[idx]; + tu_edpt_stream_t *ep_rx = &p_midi->ep_stream.rx; + + uint32_t n_words = 0; + for (uint32_t i = 0; i < max_words; i++) { + if (tu_edpt_stream_read_available(ep_rx) >= 4) { + tu_edpt_stream_read(ep_rx, (uint8_t *) &words[i], 4); + n_words++; + } else { + break; + } + } + + return n_words; +} + +uint32_t tuh_midi2_ump_write(uint8_t idx, const uint32_t* words, uint32_t count) { + TU_VERIFY(idx < CFG_TUH_MIDI2 && words && count); + + midih2_interface_t *p_midi = &_midi2_host[idx]; + tu_edpt_stream_t *ep_tx = &p_midi->ep_stream.tx; + + uint32_t n_words = 0; + for (uint32_t i = 0; i < count; i++) { + if (tu_edpt_stream_write_available(ep_tx) >= 4) { + tu_edpt_stream_write(ep_tx, (const uint8_t *) &words[i], 4); + n_words++; + } else { + break; + } + } + + return n_words; +} + +uint32_t tuh_midi2_write_flush(uint8_t idx) { + TU_VERIFY(idx < CFG_TUH_MIDI2); + + midih2_interface_t *p_midi = &_midi2_host[idx]; + tu_edpt_stream_t *ep_tx = &p_midi->ep_stream.tx; + + return tu_edpt_stream_write_xfer(ep_tx); +} + +#endif // CFG_TUH_ENABLED && CFG_TUH_MIDI2 diff --git a/src/class/midi/midi2_host.h b/src/class/midi/midi2_host.h new file mode 100644 index 0000000000..d2de55270a --- /dev/null +++ b/src/class/midi/midi2_host.h @@ -0,0 +1,99 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * This file is part of the TinyUSB stack. + */ + +#ifndef TUSB_MIDI2_HOST_H_ +#define TUSB_MIDI2_HOST_H_ + +#include "class/audio/audio.h" +#include "midi.h" + +#ifdef __cplusplus +extern "C" { +#endif + +//--------------------------------------------------------------------+ +// Callback Type Definitions +//--------------------------------------------------------------------+ + +typedef struct { + uint8_t protocol_version; // 0 = MIDI 1.0 only, 1 = MIDI 2.0 + uint8_t bcdMSC_hi, bcdMSC_lo; // MIDI version from descriptor + uint8_t rx_cable_count; // For both alt settings (same for Alt 0 and Alt 1) + uint8_t tx_cable_count; +} tuh_midi2_descriptor_cb_t; + +typedef struct { + uint8_t daddr; + uint8_t bInterfaceNumber; + uint8_t protocol_version; // 0 = MIDI 1.0, 1 = MIDI 2.0 + uint8_t alt_setting_active; // 0 or 1 + uint8_t rx_cable_count; + uint8_t tx_cable_count; +} tuh_midi2_mount_cb_t; + +//--------------------------------------------------------------------+ +// Application Callback API (weak, optional) +//--------------------------------------------------------------------+ + +void tuh_midi2_descriptor_cb(uint8_t idx, const tuh_midi2_descriptor_cb_t *desc_cb_data); +void tuh_midi2_mount_cb(uint8_t idx, const tuh_midi2_mount_cb_t *mount_cb_data); +void tuh_midi2_rx_cb(uint8_t idx, uint32_t xferred_bytes); +void tuh_midi2_tx_cb(uint8_t idx, uint32_t xferred_bytes); +void tuh_midi2_umount_cb(uint8_t idx); + +//--------------------------------------------------------------------+ +// Application API - Query +//--------------------------------------------------------------------+ + +bool tuh_midi2_mounted(uint8_t idx); +uint8_t tuh_midi2_get_protocol_version(uint8_t idx); +uint8_t tuh_midi2_get_alt_setting_active(uint8_t idx); +uint8_t tuh_midi2_get_cable_count(uint8_t idx); + +//--------------------------------------------------------------------+ +// Application API - I/O +//--------------------------------------------------------------------+ + +uint32_t tuh_midi2_ump_read(uint8_t idx, uint32_t* words, uint32_t max_words); +uint32_t tuh_midi2_ump_write(uint8_t idx, const uint32_t* words, uint32_t count); +uint32_t tuh_midi2_write_flush(uint8_t idx); + +//--------------------------------------------------------------------+ +// Internal Class Driver API +//--------------------------------------------------------------------+ + +bool midih2_init(void); +bool midih2_deinit(void); +bool midih2_set_config(uint8_t dev_addr, uint8_t itf_num); +void midih2_close(uint8_t dev_addr); +uint16_t midih2_open(uint8_t rhport, uint8_t dev_addr, const tusb_desc_interface_t *desc_itf, uint16_t max_len); +bool midih2_xfer_cb(uint8_t dev_addr, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/src/device/usbd.c b/src/device/usbd.c index 42903576cd..202488a828 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -237,6 +237,20 @@ static const usbd_class_driver_t _usbd_driver[] = { }, #endif + #if CFG_TUD_MIDI2 + { + .name = DRIVER_NAME("MIDI2"), + .init = midi2d_init, + .deinit = midi2d_deinit, + .open = midi2d_open, + .reset = midi2d_reset, + .control_xfer_cb = midi2d_control_xfer_cb, + .xfer_cb = midi2d_xfer_cb, + .xfer_isr = NULL, + .sof = NULL + }, + #endif + #if CFG_TUD_VENDOR { .name = DRIVER_NAME("VENDOR"), diff --git a/src/device/usbd.h b/src/device/usbd.h index d3a6dccbbc..9ba057ddac 100644 --- a/src/device/usbd.h +++ b/src/device/usbd.h @@ -424,6 +424,43 @@ bool tud_vendor_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_requ TUD_MIDI_DESC_EP(_epin, _epsize, 1),\ TUD_MIDI_JACKID_OUT_EMB(1) +//--------------------------------------------------------------------+ +// MIDI 2.0 Descriptor Templates (USB-MIDI 2.0) +//--------------------------------------------------------------------+ + +// Alt Setting 1: MS Interface + MS Header (bcdMSC=0x0200) +// wTotalLength covers MS Header + all CS Endpoint descriptors +#define TUD_MIDI2_DESC_ALT1_CS_LEN(_numgtbs) (7 + (4 + (_numgtbs)) * 2) +#define TUD_MIDI2_DESC_ALT1_HEAD_LEN (9 + 7) +#define TUD_MIDI2_DESC_ALT1_HEAD(_itfnum, _stridx, _numgtbs) \ + /* MIDI Streaming Interface, Alt Setting 1 */\ + 9, TUSB_DESC_INTERFACE, (uint8_t)((_itfnum) + 1), 1, 2, TUSB_CLASS_AUDIO, AUDIO_SUBCLASS_MIDI_STREAMING, AUDIO_FUNC_PROTOCOL_CODE_UNDEF, 0,\ + /* MS Header (MIDI 2.0): wTotalLength = header + 2x CS Endpoint */\ + 7, TUSB_DESC_CS_INTERFACE, MIDI_CS_INTERFACE_HEADER, U16_TO_U8S_LE(0x0200), U16_TO_U8S_LE(TUD_MIDI2_DESC_ALT1_CS_LEN(_numgtbs)) + +// Alt Setting 1: Standard USB Endpoint (7 bytes) + CS Endpoint General 2.0 +#define TUD_MIDI2_DESC_ALT1_EP_LEN(_numgtbs) (7 + 4 + (_numgtbs)) +#define TUD_MIDI2_DESC_ALT1_EP(_ep, _epsize, _numgtbs, ...) \ + 7, TUSB_DESC_ENDPOINT, _ep, TUSB_XFER_BULK, U16_TO_U8S_LE(_epsize), 0, \ + (uint8_t)(4 + (_numgtbs)), TUSB_DESC_CS_ENDPOINT, MIDI_CS_ENDPOINT_GENERAL_2_0, _numgtbs, ## __VA_ARGS__ + +// Total length: Alt 0 (MIDI 1.0) + Alt 1 (UMP) +#define TUD_MIDI2_DESC_LEN (TUD_MIDI_DESC_LEN + TUD_MIDI2_DESC_ALT1_HEAD_LEN + TUD_MIDI2_DESC_ALT1_EP_LEN(1) * 2) + +// Complete MIDI 2.0 descriptor with both alternate settings (single cable/GTB) +#define TUD_MIDI2_DESCRIPTOR(_itfnum, _stridx, _epout, _epin, _epsize) \ + /* Alt Setting 0 (MIDI 1.0) */\ + TUD_MIDI_DESC_HEAD(_itfnum, _stridx, 1),\ + TUD_MIDI_DESC_JACK_DESC(1, 0),\ + TUD_MIDI_DESC_EP(_epout, _epsize, 1),\ + TUD_MIDI_JACKID_IN_EMB(1),\ + TUD_MIDI_DESC_EP(_epin, _epsize, 1),\ + TUD_MIDI_JACKID_OUT_EMB(1),\ + /* Alt Setting 1 (UMP) */\ + TUD_MIDI2_DESC_ALT1_HEAD(_itfnum, _stridx, 1),\ + TUD_MIDI2_DESC_ALT1_EP(_epout, _epsize, 1, 1 /* bAssoGrpTrmBlkID */),\ + TUD_MIDI2_DESC_ALT1_EP(_epin, _epsize, 1, 1 /* bAssoGrpTrmBlkID */) + //--------------------------------------------------------------------+ // Audio Descriptor Templates //--------------------------------------------------------------------+ diff --git a/src/host/usbh.c b/src/host/usbh.c index 75df6bf60b..b92881f73b 100644 --- a/src/host/usbh.c +++ b/src/host/usbh.c @@ -278,6 +278,18 @@ static usbh_class_driver_t const usbh_class_drivers[] = { }, #endif + #if CFG_TUH_MIDI2 + { + .name = DRIVER_NAME("MIDI2"), + .init = midih2_init, + .deinit = midih2_deinit, + .open = midih2_open, + .set_config = midih2_set_config, + .xfer_cb = midih2_xfer_cb, + .close = midih2_close + }, + #endif + #if CFG_TUH_HUB { .name = DRIVER_NAME("HUB"), diff --git a/src/tusb.h b/src/tusb.h index c80c8433c5..aa6b461e5f 100644 --- a/src/tusb.h +++ b/src/tusb.h @@ -63,6 +63,10 @@ #include "class/midi/midi_host.h" #endif + #if CFG_TUH_MIDI2 + #include "class/midi/midi2_host.h" + #endif + #if CFG_TUH_VENDOR #include "class/vendor/vendor_host.h" #endif @@ -108,6 +112,10 @@ #include "class/midi/midi_device.h" #endif + #if CFG_TUD_MIDI2 + #include "class/midi/midi2_device.h" + #endif + #if CFG_TUD_VENDOR #include "class/vendor/vendor_device.h" #endif diff --git a/src/tusb_option.h b/src/tusb_option.h index 74a556605e..abd79eb9fb 100644 --- a/src/tusb_option.h +++ b/src/tusb_option.h @@ -649,6 +649,42 @@ #define CFG_TUD_MIDI 0 #endif +#ifndef CFG_TUD_MIDI2 + #define CFG_TUD_MIDI2 0 +#endif + +#ifndef CFG_TUD_MIDI2_TX_BUFSIZE + #define CFG_TUD_MIDI2_TX_BUFSIZE 256 +#endif + +#ifndef CFG_TUD_MIDI2_RX_BUFSIZE + #define CFG_TUD_MIDI2_RX_BUFSIZE 256 +#endif + +#ifndef CFG_TUD_MIDI2_TX_EPSIZE + #define CFG_TUD_MIDI2_TX_EPSIZE 64 +#endif + +#ifndef CFG_TUD_MIDI2_RX_EPSIZE + #define CFG_TUD_MIDI2_RX_EPSIZE 64 +#endif + +#ifndef CFG_TUD_MIDI2_NUM_GROUPS + #define CFG_TUD_MIDI2_NUM_GROUPS 1 +#endif + +#ifndef CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS + #define CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS 1 +#endif + +#ifndef CFG_TUD_MIDI2_EP_NAME + #define CFG_TUD_MIDI2_EP_NAME "TinyUSB MIDI 2.0" +#endif + +#ifndef CFG_TUD_MIDI2_PRODUCT_ID + #define CFG_TUD_MIDI2_PRODUCT_ID "TinyUSB-MIDI2" +#endif + #ifndef CFG_TUD_VENDOR #define CFG_TUD_VENDOR 0 #endif @@ -818,6 +854,22 @@ #define CFG_TUH_MIDI 0 #endif +#ifndef CFG_TUH_MIDI2 + #define CFG_TUH_MIDI2 0 +#endif + +#ifndef CFG_TUH_MIDI2_RX_BUFSIZE + #define CFG_TUH_MIDI2_RX_BUFSIZE (4 * TUH_EPSIZE_BULK_MAX) +#endif + +#ifndef CFG_TUH_MIDI2_TX_BUFSIZE + #define CFG_TUH_MIDI2_TX_BUFSIZE (4 * TUH_EPSIZE_BULK_MAX) +#endif + +#ifndef CFG_TUH_MIDI2_LOG_LEVEL + #define CFG_TUH_MIDI2_LOG_LEVEL CFG_TUH_LOG_LEVEL +#endif + #ifndef CFG_TUH_MSC #define CFG_TUH_MSC 0 #endif diff --git a/test/unit-test/test/device/midi2/test_midi2_device.c b/test/unit-test/test/device/midi2/test_midi2_device.c new file mode 100644 index 0000000000..9d716d93bc --- /dev/null +++ b/test/unit-test/test/device/midi2/test_midi2_device.c @@ -0,0 +1,263 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "unity.h" +#include "tusb_types.h" +#include "class/audio/audio.h" +#include "class/midi/midi.h" +#include "device/usbd.h" + +void setUp(void) {} +void tearDown(void) {} + +//--------------------------------------------------------------------+ +// UMP Word Count: all 16 message types +//--------------------------------------------------------------------+ + +void test_ump_word_count_1word_types(void) { + uint8_t types[] = {0x0, 0x1, 0x2, 0x6, 0x7}; + for (int i = 0; i < 5; i++) { + TEST_ASSERT_EQUAL(1, midi2_ump_word_count(types[i])); + } +} + +void test_ump_word_count_2word_types(void) { + uint8_t types[] = {0x3, 0x4, 0x8, 0x9, 0xA}; + for (int i = 0; i < 5; i++) { + TEST_ASSERT_EQUAL(2, midi2_ump_word_count(types[i])); + } +} + +void test_ump_word_count_3word_types(void) { + TEST_ASSERT_EQUAL(3, midi2_ump_word_count(0xB)); + TEST_ASSERT_EQUAL(3, midi2_ump_word_count(0xC)); +} + +void test_ump_word_count_4word_types(void) { + uint8_t types[] = {0x5, 0xD, 0xE, 0xF}; + for (int i = 0; i < 4; i++) { + TEST_ASSERT_EQUAL(4, midi2_ump_word_count(types[i])); + } +} + +void test_ump_word_count_covers_all_16(void) { + for (uint8_t mt = 0; mt <= 0xF; mt++) { + uint8_t wc = midi2_ump_word_count(mt); + TEST_ASSERT_TRUE(wc >= 1 && wc <= 4); + } +} + +//--------------------------------------------------------------------+ +// CS Endpoint subtypes (defined in midi.h) +//--------------------------------------------------------------------+ + +void test_cs_endpoint_subtypes(void) { + TEST_ASSERT_EQUAL(0x01, MIDI_CS_ENDPOINT_GENERAL); + TEST_ASSERT_EQUAL(0x02, MIDI_CS_ENDPOINT_GENERAL_2_0); +} + +//--------------------------------------------------------------------+ +// Descriptor macro length calculations +//--------------------------------------------------------------------+ + +void test_midi1_desc_len(void) { + TEST_ASSERT_EQUAL(TUD_MIDI_DESC_HEAD_LEN + TUD_MIDI_DESC_JACK_LEN + TUD_MIDI_DESC_EP_LEN(1) * 2, + TUD_MIDI_DESC_LEN); +} + +void test_midi2_alt1_head_len(void) { + TEST_ASSERT_EQUAL(16, TUD_MIDI2_DESC_ALT1_HEAD_LEN); +} + +void test_midi2_alt1_ep_len(void) { + // EP(7) + CS base(4) + numgtbs + TEST_ASSERT_EQUAL(12, TUD_MIDI2_DESC_ALT1_EP_LEN(1)); + TEST_ASSERT_EQUAL(13, TUD_MIDI2_DESC_ALT1_EP_LEN(2)); + TEST_ASSERT_EQUAL(18, TUD_MIDI2_DESC_ALT1_EP_LEN(7)); +} + +void test_midi2_desc_len(void) { + int expected = TUD_MIDI_DESC_LEN + TUD_MIDI2_DESC_ALT1_HEAD_LEN + TUD_MIDI2_DESC_ALT1_EP_LEN(1) * 2; + TEST_ASSERT_EQUAL(expected, TUD_MIDI2_DESC_LEN); +} + +void test_midi2_desc_len_greater_than_midi1(void) { + TEST_ASSERT_TRUE(TUD_MIDI2_DESC_LEN > TUD_MIDI_DESC_LEN); +} + +//--------------------------------------------------------------------+ +// Descriptor macro byte validation +//--------------------------------------------------------------------+ + +void test_midi2_descriptor_bytes(void) { + uint8_t desc[] = { TUD_MIDI2_DESCRIPTOR(0, 0, 0x01, 0x81, 64) }; + + TEST_ASSERT_EQUAL(TUD_MIDI2_DESC_LEN, sizeof(desc)); + + // First byte: Audio Control Interface descriptor length = 9 + TEST_ASSERT_EQUAL(9, desc[0]); + TEST_ASSERT_EQUAL(TUSB_DESC_INTERFACE, desc[1]); + TEST_ASSERT_EQUAL(0, desc[2]); + + // Find Alt Setting 1 by scanning + int alt1_offset = -1; + int pos = 0; + while (pos < (int)sizeof(desc)) { + if (desc[pos + 1] == TUSB_DESC_INTERFACE && desc[pos + 3] == 1) { + alt1_offset = pos; + break; + } + pos += desc[pos]; + } + + TEST_ASSERT_TRUE_MESSAGE(alt1_offset >= 0, "Alt Setting 1 interface not found"); + + TEST_ASSERT_EQUAL(9, desc[alt1_offset]); + TEST_ASSERT_EQUAL(TUSB_DESC_INTERFACE, desc[alt1_offset + 1]); + TEST_ASSERT_EQUAL(1, desc[alt1_offset + 2]); // bInterfaceNumber + TEST_ASSERT_EQUAL(1, desc[alt1_offset + 3]); // bAlternateSetting + TEST_ASSERT_EQUAL(2, desc[alt1_offset + 4]); // bNumEndpoints + TEST_ASSERT_EQUAL(TUSB_CLASS_AUDIO, desc[alt1_offset + 5]); + + // MS Header after Alt Setting 1 interface: bcdMSC = 0x0200 + int ms2_offset = alt1_offset + 9; + TEST_ASSERT_EQUAL(7, desc[ms2_offset]); + TEST_ASSERT_EQUAL(TUSB_DESC_CS_INTERFACE, desc[ms2_offset + 1]); + TEST_ASSERT_EQUAL(MIDI_CS_INTERFACE_HEADER, desc[ms2_offset + 2]); + TEST_ASSERT_EQUAL(0x00, desc[ms2_offset + 3]); + TEST_ASSERT_EQUAL(0x02, desc[ms2_offset + 4]); +} + +void test_midi2_descriptor_alt1_cs_endpoint_subtype(void) { + uint8_t desc[] = { TUD_MIDI2_DESCRIPTOR(0, 0, 0x01, 0x81, 64) }; + + int cs_ep_count = 0; + int pos = 0; + while (pos < (int)sizeof(desc)) { + if (desc[pos + 1] == TUSB_DESC_CS_ENDPOINT && + desc[pos + 2] == MIDI_CS_ENDPOINT_GENERAL_2_0) { + cs_ep_count++; + TEST_ASSERT_EQUAL(1, desc[pos + 3]); + } + pos += desc[pos]; + } + TEST_ASSERT_EQUAL(2, cs_ep_count); +} + +void test_midi2_descriptor_has_both_alt_settings(void) { + uint8_t desc[] = { TUD_MIDI2_DESCRIPTOR(0, 0, 0x01, 0x81, 64) }; + + int alt0_count = 0; + int alt1_count = 0; + int pos = 0; + while (pos < (int)sizeof(desc)) { + if (desc[pos + 1] == TUSB_DESC_INTERFACE) { + if (desc[pos + 3] == 0) alt0_count++; + if (desc[pos + 3] == 1) alt1_count++; + } + pos += desc[pos]; + } + TEST_ASSERT_TRUE(alt0_count >= 2); + TEST_ASSERT_EQUAL(1, alt1_count); +} + +void test_midi2_descriptor_endpoint_addresses(void) { + uint8_t desc[] = { TUD_MIDI2_DESCRIPTOR(0, 0, 0x02, 0x82, 64) }; + + int ep_out_count = 0; + int ep_in_count = 0; + int pos = 0; + while (pos < (int)sizeof(desc)) { + if (desc[pos + 1] == TUSB_DESC_ENDPOINT) { + uint8_t ep_addr = desc[pos + 2]; + if (ep_addr == 0x02) ep_out_count++; + if (ep_addr == 0x82) ep_in_count++; + TEST_ASSERT_EQUAL(TUSB_XFER_BULK, desc[pos + 3]); + TEST_ASSERT_EQUAL(64, desc[pos + 4]); + TEST_ASSERT_EQUAL(0, desc[pos + 5]); + } + pos += desc[pos]; + } + TEST_ASSERT_EQUAL(2, ep_out_count); + TEST_ASSERT_EQUAL(2, ep_in_count); +} + +void test_midi2_descriptor_nonzero_itfnum(void) { + uint8_t desc[] = { TUD_MIDI2_DESCRIPTOR(2, 0, 0x03, 0x83, 64) }; + + TEST_ASSERT_EQUAL(2, desc[2]); + + int pos = desc[0]; + while (pos < (int)sizeof(desc)) { + if (desc[pos + 1] == TUSB_DESC_INTERFACE) { + TEST_ASSERT_EQUAL(3, desc[pos + 2]); + break; + } + pos += desc[pos]; + } +} + +//--------------------------------------------------------------------+ +// Descriptor traversal integrity +//--------------------------------------------------------------------+ + +void test_midi2_descriptor_no_zero_length(void) { + uint8_t desc[] = { TUD_MIDI2_DESCRIPTOR(0, 0, 0x01, 0x81, 64) }; + + int pos = 0; + int desc_count = 0; + while (pos < (int)sizeof(desc)) { + TEST_ASSERT_TRUE_MESSAGE(desc[pos] > 0, "Zero-length descriptor found"); + TEST_ASSERT_TRUE_MESSAGE(desc[pos] <= (int)sizeof(desc) - pos, + "Descriptor length exceeds remaining bytes"); + pos += desc[pos]; + desc_count++; + } + TEST_ASSERT_EQUAL((int)sizeof(desc), pos); + TEST_ASSERT_TRUE(desc_count > 5); +} + +void test_midi2_descriptor_valid_types(void) { + uint8_t desc[] = { TUD_MIDI2_DESCRIPTOR(0, 0, 0x01, 0x81, 64) }; + + int pos = 0; + while (pos < (int)sizeof(desc)) { + uint8_t dtype = desc[pos + 1]; + bool valid = (dtype == TUSB_DESC_INTERFACE || + dtype == TUSB_DESC_ENDPOINT || + dtype == TUSB_DESC_CS_INTERFACE || + dtype == TUSB_DESC_CS_ENDPOINT); + TEST_ASSERT_TRUE_MESSAGE(valid, "Invalid descriptor type found"); + pos += desc[pos]; + } +} + +//--------------------------------------------------------------------+ +// Edge cases +//--------------------------------------------------------------------+ + +void test_ump_word_count_with_values_beyond_0xf(void) { + TEST_ASSERT_EQUAL(4, midi2_ump_word_count(0x10)); + TEST_ASSERT_EQUAL(4, midi2_ump_word_count(0xFF)); +} diff --git a/test/unit-test/test/host/midi2/test_midi2_host.c b/test/unit-test/test/host/midi2/test_midi2_host.c new file mode 100644 index 0000000000..8ad77c14e7 --- /dev/null +++ b/test/unit-test/test/host/midi2/test_midi2_host.c @@ -0,0 +1,101 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "unity.h" +#include "tusb_option.h" +#include "class/midi/midi.h" +#include "class/midi/midi2_host.h" + +void setUp(void) {} +void tearDown(void) {} + +//--------------------------------------------------------------------+ +// UMP Word Count (shared helper, defined in midi.h) +//--------------------------------------------------------------------+ + +void test_midi2_host_ump_word_count_1word(void) { + uint8_t types[] = {0x0, 0x1, 0x2, 0x6, 0x7}; + for (int i = 0; i < 5; i++) { + TEST_ASSERT_EQUAL(1, midi2_ump_word_count(types[i])); + } +} + +void test_midi2_host_ump_word_count_2word(void) { + uint8_t types[] = {0x3, 0x4, 0x8, 0x9, 0xA}; + for (int i = 0; i < 5; i++) { + TEST_ASSERT_EQUAL(2, midi2_ump_word_count(types[i])); + } +} + +void test_midi2_host_ump_word_count_4word(void) { + uint8_t types[] = {0x5, 0xD, 0xE, 0xF}; + for (int i = 0; i < 4; i++) { + TEST_ASSERT_EQUAL(4, midi2_ump_word_count(types[i])); + } +} + +//--------------------------------------------------------------------+ +// Callback struct field validation +//--------------------------------------------------------------------+ + +void test_midi2_descriptor_cb_struct_fields(void) { + tuh_midi2_descriptor_cb_t desc = { + .protocol_version = 1, + .bcdMSC_hi = 0x02, + .bcdMSC_lo = 0x00, + .rx_cable_count = 1, + .tx_cable_count = 1 + }; + TEST_ASSERT_EQUAL(1, desc.protocol_version); + TEST_ASSERT_EQUAL(0x02, desc.bcdMSC_hi); + TEST_ASSERT_EQUAL(0x00, desc.bcdMSC_lo); + TEST_ASSERT_EQUAL(1, desc.rx_cable_count); + TEST_ASSERT_EQUAL(1, desc.tx_cable_count); +} + +void test_midi2_mount_cb_struct_fields(void) { + tuh_midi2_mount_cb_t mount = { + .daddr = 1, + .bInterfaceNumber = 0, + .protocol_version = 1, + .alt_setting_active = 1, + .rx_cable_count = 2, + .tx_cable_count = 2 + }; + TEST_ASSERT_EQUAL(1, mount.daddr); + TEST_ASSERT_EQUAL(0, mount.bInterfaceNumber); + TEST_ASSERT_EQUAL(1, mount.protocol_version); + TEST_ASSERT_EQUAL(1, mount.alt_setting_active); + TEST_ASSERT_EQUAL(2, mount.rx_cable_count); + TEST_ASSERT_EQUAL(2, mount.tx_cable_count); +} + +//--------------------------------------------------------------------+ +// CS Endpoint subtypes +//--------------------------------------------------------------------+ + +void test_midi2_host_cs_endpoint_subtypes(void) { + TEST_ASSERT_EQUAL(0x01, MIDI_CS_ENDPOINT_GENERAL); + TEST_ASSERT_EQUAL(0x02, MIDI_CS_ENDPOINT_GENERAL_2_0); +}