tinyusb/examples/host/cdc_msc_hid/src/main.c

/* 
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
 *
 * 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 <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "bsp/board.h"
#include "tusb.h"

//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF PROTYPES
//--------------------------------------------------------------------+
void print_greeting(void);
void led_blinking_task(void);

extern void cdc_task(void);
extern void hid_app_task(void);

/*------------- MAIN -------------*/
int main(void)
{
  board_init();
  print_greeting();

  tusb_init();

  while (1)
  {
    // tinyusb host task
    tuh_task();
    led_blinking_task();

#if CFG_TUH_CDC
    cdc_task();
#endif

#if CFG_TUH_HID
    hid_app_task();
#endif
  }

  return 0;
}

//--------------------------------------------------------------------+
// USB CDC
//--------------------------------------------------------------------+
#if CFG_TUH_CDC
CFG_TUSB_MEM_SECTION static char serial_in_buffer[64] = { 0 };

void tuh_mount_cb(uint8_t dev_addr)
{
  // application set-up
  printf("A device with address %d is mounted\r\n", dev_addr);

  tuh_cdc_receive(dev_addr, serial_in_buffer, sizeof(serial_in_buffer), true); // schedule first transfer
}

void tuh_umount_cb(uint8_t dev_addr)
{
  // application tear-down
  printf("A device with address %d is unmounted \r\n", dev_addr);
}

// invoked ISR context
void tuh_cdc_xfer_isr(uint8_t dev_addr, xfer_result_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes)
{
  (void) event;
  (void) pipe_id;
  (void) xferred_bytes;

  printf(serial_in_buffer);
  tu_memclr(serial_in_buffer, sizeof(serial_in_buffer));

  tuh_cdc_receive(dev_addr, serial_in_buffer, sizeof(serial_in_buffer), true); // waiting for next data
}

void cdc_task(void)
{

}

#endif

//--------------------------------------------------------------------+
// TinyUSB Callbacks
//--------------------------------------------------------------------+

//--------------------------------------------------------------------+
// Blinking Task
//--------------------------------------------------------------------+
void led_blinking_task(void)
{
  const uint32_t interval_ms = 1000;
  static uint32_t start_ms = 0;

  static bool led_state = false;

  // Blink every interval ms
  if ( board_millis() - start_ms < interval_ms) return; // not enough time
  start_ms += interval_ms;

  board_led_write(led_state);
  led_state = 1 - led_state; // toggle
}

//--------------------------------------------------------------------+
// HELPER FUNCTION
//--------------------------------------------------------------------+
void print_greeting(void)
{
  char const * const rtos_name[] =
  {
      [OPT_OS_NONE]      = "None",
      [OPT_OS_FREERTOS]  = "FreeRTOS",
      [OPT_OS_MYNEWT]    = "Mynewt OS",
      [OPT_OS_CUSTOM]    = "Custom OS implemnted by application",
      [OPT_OS_PICO]      = "Raspberry Pi Pico SDK",
      [OPT_OS_RTTHREAD]  = "RT-Thread"
  };

  printf("----------------------------------------------------\r\n");
  printf("TinyUSB Host Example\r\n");
  printf("If you find any bugs or problems, feel free to open\r\n");
  printf("an issue at https://github.com/hathach/tinyusb\r\n");
  printf("----------------------------------------------------\r\n\r\n");

  printf("This Host demo is configured to support:\r\n");
  printf("  - RTOS = %s\r\n", rtos_name[CFG_TUSB_OS]);
}