fix: CI build failures on non-RP2040 platforms

- Use UINT32_C(1) instead of 1u for bit shifts >= 16 in
  midi2_device.c to avoid shift-count-overflow on 16-bit
  platforms (MSP430)
- Add Makefiles for midi2_device and midi2_host examples with
  family guard (skip if FAMILY != rp2040). These examples
  require Pico SDK and board-specific hardware
- Restrict midi2_device CMakeLists.txt to rp2040 family
  (matching midi2_host)

Author: sauloverissimo

examples/device/midi2_device/CMakeLists.txt

@@ -7,8 +7,8 @@ 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})
 
-# Espressif has its own cmake build system
-if(FAMILY STREQUAL "espressif")
+# This example requires RP2040/RP2350 (USB descriptors and config are board-specific)
+if(NOT FAMILY STREQUAL "rp2040")
   return()
 endif()
 

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

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

src/class/midi/midi2_device.c

@@ -158,10 +158,10 @@ static void _nego_send_endpoint_info(midi2d_interface_t* p_midi) {
          | ((uint32_t) STREAM_ENDPOINT_INFO << 16)
          | ((uint32_t) UMP_VER_MAJOR << 8)
          | (uint32_t) UMP_VER_MINOR;
-  msg[1] = (1u << 31)  // Static Function Blocks flag
+  msg[1] = (UINT32_C(1) << 31)  // Static Function Blocks flag
          | ((uint32_t)(CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS & 0x7F) << 24)
-         | (1u << 9)   // MIDI 2.0 Protocol capability
-         | (1u << 8);  // MIDI 1.0 Protocol capability
+         | (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);
 }
 
@@ -214,7 +214,7 @@ 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)
-         | (1u << 15)
+         | (UINT32_C(1) << 15)
          | ((uint32_t) fb_idx << 8)
          | 0x02;  // bDirection: bidirectional
   msg[1] = ((uint32_t) 0 << 24)  // bFirstGroup