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sekigon-gonnocsekigon-gonnoc
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Merge pull request sekigon-gonnoc#120 from sekigon-gonnoc/single-pio
Run on 1 PIO
2 parents 0f747aa + d1f050a commit dfad154

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14 files changed

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‎README.md‎

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@@ -39,9 +39,8 @@ Another sample program for split keyboard with QMK
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## Resource Usage
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- Two PIO
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- One PIO is for USB transmitter using 22 instruction and one state machine
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- Another PIO is for USB receiver using 31 instruction and two state machine
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- 1 PIO, 3 state machines, 32 instructions
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- Two GPIO for D+/D- (Series 22ohm resitors are better)
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- 15KB ROM and RAM
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- (For Host) One 1ms repeating timer

‎examples/CMakeLists.txt‎

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@@ -14,3 +14,4 @@ add_subdirectory(${PICO_PIO_USB_DIR} pico_pio_usb)
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add_subdirectory(capture_hid_report)
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add_subdirectory(usb_device)
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add_subdirectory(host_hid_to_device_cdc)
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add_subdirectory(test_ll)

‎examples/test_ll/CMakeLists.txt‎

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set(target_name test_ll)
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add_executable(${target_name})
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pico_enable_stdio_usb(${target_name} 1)
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target_sources(${target_name} PRIVATE
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test_ll.c
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)
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# print memory usage, enable all warnings
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target_link_options(${target_name} PRIVATE -Xlinker --print-memory-usage)
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target_compile_options(${target_name} PRIVATE -Wall -Wextra)
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target_link_libraries(${target_name} PRIVATE pico_stdlib pico_multicore pico_pio_usb)
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pico_add_extra_outputs(${target_name})

‎examples/test_ll/test_ll.c‎

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#include <stdio.h>
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#include <string.h>
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#include <strings.h>
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#include "hardware/gpio.h"
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#include "hardware/sync.h"
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#include "pico/stdlib.h"
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#include "pico/time.h"
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#include "pico/bootrom.h"
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#include "pico/types.h"
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#include "pio_usb.h"
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#include "pio_usb_configuration.h"
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#include "pio_usb_ll.h"
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#include "usb_definitions.h"
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#include "usb_rx.pio.h"
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pio_usb_configuration_t pio_usb_config = PIO_USB_DEFAULT_CONFIG;
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static bool do_test(pio_port_t *pp);
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int main() {
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// default 125MHz is not appropreate. Sysclock should be multiple of 12MHz.
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set_sys_clock_khz(120000, true);
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stdio_init_all();
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sleep_ms(1000);
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printf("start\n");
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pio_usb_config.alarm_pool = NULL;
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pio_usb_config.skip_alarm_pool = true;
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pio_usb_config.pin_dp = 0;
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pio_usb_host_init(&pio_usb_config);
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if (pio_usb_host_add_port(4, PIO_USB_PINOUT_DMDP) != 0) {
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printf("Failed to add root port\n");
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}
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pio_port_t *pp = PIO_USB_PIO_PORT(0);
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while (1) {
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printf("\n[b]: Jump to bootloader, [others]: Execute tests\n");
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char c=0;
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scanf("%c", &c);
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if (c == 'b') {
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reset_usb_boot(1 << PICO_DEFAULT_LED_PIN, 0);
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}
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{
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printf("\nTest1: FS, 1\n");
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root_port_t *root = PIO_USB_ROOT_PORT(0);
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gpio_pull_up(root->pin_dp);
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gpio_pull_down(root->pin_dm);
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root->is_fullspeed = true;
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root->initialized = true;
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root->connected = true;
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root->suspended = false;
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uint32_t irq = save_and_disable_interrupts();
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pio_usb_host_frame();
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restore_interrupts(irq);
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printf("%s\n", do_test(pp) ? "[OK]" : "[NG]");
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root->connected = false;
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}
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{
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printf("\nTest2: FS, 2\n");
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root_port_t *root = PIO_USB_ROOT_PORT(1);
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gpio_pull_up(root->pin_dp);
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gpio_pull_down(root->pin_dm);
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root->is_fullspeed = true;
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root->initialized = true;
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root->connected = true;
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root->suspended = false;
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uint32_t irq = save_and_disable_interrupts();
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pio_usb_host_frame();
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restore_interrupts(irq);
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printf("%s\n", do_test(pp) ? "[OK]" : "[NG]");
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root->connected = false;
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}
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{
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printf("\nTest3: LS, 1\n");
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root_port_t *root = PIO_USB_ROOT_PORT(0);
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gpio_pull_down(root->pin_dp);
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gpio_pull_up(root->pin_dm);
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root->is_fullspeed = false;
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root->initialized = true;
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root->connected = true;
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root->suspended = false;
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uint32_t irq = save_and_disable_interrupts();
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pio_usb_host_frame();
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restore_interrupts(irq);
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printf("%s\n", do_test(pp) ? "[OK]" : "[NG]");
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root->connected = false;
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}
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{
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printf("\nTest4: LS, 2\n");
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root_port_t *root = PIO_USB_ROOT_PORT(1);
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gpio_pull_down(root->pin_dp);
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gpio_pull_up(root->pin_dm);
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root->is_fullspeed = false;
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root->initialized = true;
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root->connected = true;
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root->suspended = false;
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uint32_t irq = save_and_disable_interrupts();
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pio_usb_host_frame();
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restore_interrupts(irq);
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printf("%s\n", do_test(pp) ? "[OK]" : "[NG]");
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root->connected = false;
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}
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{
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printf("\nTest 5: Software Encode Speed\n");
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uint8_t buffer[64];
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uint8_t encoded_data[64 * 2 * 7 / 6 + 2];
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for (size_t i = 0; i < sizeof(buffer); i++) {
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buffer[i] = i;
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}
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absolute_time_t start = get_absolute_time();
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for (int i = 0; i < 1000; i++) {
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pio_usb_ll_encode_tx_data(buffer, sizeof(buffer), encoded_data);
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}
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absolute_time_t end = get_absolute_time();
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int64_t diff = absolute_time_diff_us(start, end);
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printf("%f us (64bytes packet)", diff / 1000.0f);
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}
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}
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}
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static bool do_test(pio_port_t *pp) {
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bool success = true;
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// Prepare transfer data
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uint8_t test_data[] = {0x80, 0xff, 0x00, 0x83};
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endpoint_t *ep = PIO_USB_ENDPOINT(0);
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ep->has_transfer = false;
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ep->is_tx = true;
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ep->size = 32;
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pio_usb_ll_transfer_start(ep, test_data, sizeof(test_data));
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// Start receiver
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pio_usb_bus_prepare_receive(pp);
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pio_usb_bus_start_receive(pp);
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uint32_t irq = save_and_disable_interrupts();
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// Start transmitter
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pio_usb_bus_usb_transfer(pp, ep->buffer, ep->encoded_data_len);
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restore_interrupts(irq);
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// Check received data
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uint8_t received[sizeof(test_data) + 4];
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memset(received, 0, sizeof(received));
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uint8_t received_cnt = 0;
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while (pio_sm_get_rx_fifo_level(pp->pio_usb_rx, pp->sm_rx)) {
175+
if (received_cnt >= sizeof(received)) {
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printf("\t[NG] Invalid size\n");
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success = false;
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break;
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}
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received[received_cnt++] = pio_sm_get(pp->pio_usb_rx, pp->sm_rx) >> 24;
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}
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for (size_t i = 0; i < sizeof(received); i++) {
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printf("%02x ", received[i]);
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}
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printf("\n");
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for (size_t i = 0; i < sizeof(test_data); i++) {
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if (test_data[i] != received[i + 2]) {
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printf("\t[NG] Invalid data at %d. Expect: %02x, Received: %02x\n", i,
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test_data[i], received[i + 2]);
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success = false;
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}
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}
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ep->has_transfer = false;
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return success;
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}

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