/*
 * serial.cpp
 *
 *  Created on: Jun 23, 2023
 *      Author: Carst
 */

#include <cstdint>
#include "stm32g0xx_ll_lpuart.h"

extern "C" int _write(int file, char *ptr, int len)
{
  (void)file;
  int DataIdx;

  for (DataIdx = 0; DataIdx < len; DataIdx++)
  {
    if(LL_LPUART_IsActiveFlag_TXE_TXFNF(LPUART1))
    {
      LL_LPUART_TransmitData8(LPUART1, static_cast<std::uint8_t>(*ptr++));
    }
  }
  return len;
}

extern "C" int _close(int file)
{
  (void)file;
  return -1;
}

extern "C" int _lseek(int file, int ptr, int dir)
{
  (void)file;
  (void)ptr;
  (void)dir;
  return 0;
}

extern "C" int _read(int file, char *ptr, int len)
{
#if 0
  (void)file;
  int DataIdx;

  for (DataIdx = 0; DataIdx < len; DataIdx++)
  {
    *ptr++ = __io_getchar();
  }

  return len;
#else
  return 0;
#endif
}

extern "C" void USART3_4_LPUART1_IRQHandler(void)
{
  if(LL_LPUART_IsActiveFlag_RXNE_RXFNE(LPUART1))
  {

  }
}