uart.c

/*
 * TongSheng TSDZ2 motor controller firmware/
 *
 * Copyright (C) Casainho, 2018.
 *
 * Released under the GPL License, Version 3
 */

#include <stdint.h>
#include <stdio.h>

#include "stm8s.h"
#include "stm8s_uart2.h"
#include "main.h"

void uart2_init (void)
{
  UART2_DeInit();
#ifdef DEBUG_UART
  UART2_Init((uint32_t) 115200,
#else
  UART2_Init((uint32_t) 9600,
#endif
	     UART2_WORDLENGTH_8D,
	     UART2_STOPBITS_1,
	     UART2_PARITY_NO,
	     UART2_SYNCMODE_CLOCK_DISABLE,
	     UART2_MODE_TXRX_ENABLE);

  UART2_ITConfig(UART2_IT_RXNE_OR, ENABLE);
}

#if __SDCC_REVISION < 9624
void putchar(char c)
{
  //Write a character to the UART2
  UART2_SendData8(c);

  //Loop until the end of transmission
  while (UART2_GetFlagStatus(UART2_FLAG_TXE) == RESET);
}
#else
int putchar(int c)
{
  //Write a character to the UART2
  UART2_SendData8(c);

  //Loop until the end of transmission
  while (UART2_GetFlagStatus(UART2_FLAG_TXE) == RESET);

  return((unsigned char)c);
}
#endif

#if __SDCC_REVISION < 9989
char getchar(void)
#else
int getchar(void)
#endif
{
  uint8_t c = 0;

  /* Loop until the Read data register flag is SET */
  while (UART2_GetFlagStatus(UART2_FLAG_RXNE) == RESET) ;

  c = UART2_ReceiveData8();

  return (c);
}