tinyusb/demos/device/keyboard/main.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

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

#if defined(__CODE_RED)
  #include <cr_section_macros.h>
  #include <NXP/crp.h>
  // Variable to store CRP value in. Will be placed automatically
  // by the linker when "Enable Code Read Protect" selected.
  // See crp.h header for more information
  __CRP const unsigned int CRP_WORD = CRP_NO_CRP ;
#endif

void print_greeting(void);

int main(void)
{
  uint32_t current_tick = system_ticks;

  board_init();
  tusb_init();

  print_greeting();
  while (1)
  {
    if (current_tick + 1000 < system_ticks)
    {
      static uint32_t led_on_mask = 0;

      current_tick += 1000;

      board_leds(led_on_mask, 1 - led_on_mask);
      led_on_mask = 1 - led_on_mask; // toggle

      if (usb_isConfigured())
      {
        #if TUSB_CFG_DEVICE_HID_KEYBOARD
        static uint32_t count =0;
        if (count < 4)
        {
          uint8_t keys[6] = {0x04}; // A character
          tusbd_hid_keyboard_send_report(0x00, keys, 1);
          count++;
        }
        #endif

        #if TUSB_CFG_DEVICE_HID_MOUSE
          tusb_hid_mouse_send(0, 10, 10);
        #endif
      }
    }

    #if defined TUSB_CFG_DEVICE_CDC && 0
    if (usb_isConfigured())
    {
      uint8_t cdc_char;
      if( tusb_cdc_getc(&cdc_char) )
      {
        switch (cdc_char)
        {
          #ifdef TUSB_CFG_DEVICE_HID_KEYBOARD
          case '1' :
          {
            uint8_t keys[6] = {HID_USAGE_KEYBOARD_aA + 'e' - 'a'};
            tusbd_hid_keyboard_send_report(0x08, keys, 1); // windows + E --> open explorer
          }
          break;
          #endif

          #ifdef TUSB_CFG_DEVICE_HID_MOUSE
          case '2' :
            tusb_hid_mouse_send(0, 10, 10);
          break;
          #endif

          default :
            cdc_char = toupper(cdc_char);
            tusb_cdc_putc(cdc_char);
          break;

        }
      }
    }
#endif
  }

  return 0;
}

//--------------------------------------------------------------------+
// HELPER FUNCTION
//--------------------------------------------------------------------+
void print_greeting(void)
{
  printf("\r\n\
--------------------------------------------------------------------\r\n\
-                     Device Demo (a tinyusb example)\r\n\
- if you find any bugs or get any questions, feel free to file an\r\n\
- issue at https://github.com/hathach/tinyusb\r\n\
--------------------------------------------------------------------\r\n\r\n"
  );
}