tinyusb/demos/device/keyboard/main.c

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

#include <cr_section_macros.h>
#include <NXP/crp.h>
#include "tusb.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 ;

int main(void) 
{
  uint32_t currentSecond, lastSecond;
  currentSecond = lastSecond = 0;

  SystemInit();

  systickInit(1);
  GPIOInit();

    #define CFG_LED_PORT                  (0)
    #define CFG_LED_PIN                   (7)
    #define CFG_LED_ON                    (1)
    #define CFG_LED_OFF                   (0)

  GPIOSetDir(CFG_LED_PORT, CFG_LED_PIN, 1);
  LPC_GPIO->CLR[CFG_LED_PORT] = (1 << CFG_LED_PIN);

  tusb_init();

  while (1)
  {
    currentSecond = systickGetSecondsActive();
    if (currentSecond != lastSecond)
    {
      /* Toggle LED once per second */
      lastSecond = currentSecond;
      GPIOSetBitValue(CFG_LED_PORT, CFG_LED_PIN, lastSecond % 2);

      #ifndef CFG_CLASS_CDC
      if (usb_isConfigured())
      {
        #ifdef CFG_CLASS_HID_KEYBOARD
          uint8_t keys[6] = {HID_USAGE_KEYBOARD_aA};
          tusb_hid_keyboard_sendKeys(0x00, keys, 1);
        #endif

        #ifdef CFG_CLASS_HID_MOUSE          
          tusb_hid_mouse_send(0, 10, 10);
        #endif
      }
      #endif
    }

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

          #ifdef CFG_CLASS_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;
}