STM8串口通信UART驱动

STM8串口通信UART驱动

文章目录

• • 1. uart.h
  • 2. uart.c

使用软件：IAR FOR STM8

编程方式：固件库

硬件配套：STM8S105K4T6最小系统板

注意事项：需在IAR工程配置中：在 General Options->Library Configuration->Library 选择 Full；在 General Options->Library Options->Printf formatter 选择 Large，Math functions 选择 Default；另外不能串口打印小数，需进一步处理数据

这是我在做课设时参考的代码，现记录如下：

1. uart.h

#ifndef __UART_H
#define __UART_H

#include "stm8s.h"
#include "stdio.h"

#ifdef _RAISONANCE_
#define PUTCHAR_PROTOTYPE int putchar (char c)
#define GETCHAR_PROTOTYPE int getchar (void)
#elif defined (_COSMIC_)
#define PUTCHAR_PROTOTYPE char putchar (char c)
#define GETCHAR_PROTOTYPE char getchar (void)
#else 
#define PUTCHAR_PROTOTYPE int putchar (int c)
#define GETCHAR_PROTOTYPE int getchar (void)
#endif 

void UART2_Config(void);
void UART2_SendByte(u8 data);
void UART2_SendStr(const unsigned char *p_str);
void Delay(uint32_t nCount);

#endif 

2. uart.c

#include "UART.h"

void UART2_Config(void)
{
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART2, ENABLE);
    UART2_DeInit();	

	

    UART2_Init((u32)115200, UART2_WORDLENGTH_8D, UART2_STOPBITS_1, UART2_PARITY_NO , UART2_SYNCMODE_CLOCK_DISABLE , UART2_MODE_TXRX_ENABLE);
    UART2_ITConfig(UART2_IT_RXNE_OR, ENABLE);
    UART2_Cmd(ENABLE);
}

void Delay(uint32_t nCount)
{
  
  while (nCount != 0)
  {   
    nCount--;
  }
}

void UART2_SendByte(u8 data)
{
	UART2_SendData8((unsigned char)data);

	
	while (UART2_GetFlagStatus(UART2_FLAG_TXE) == RESET);
}

void UART2_SendStr(const unsigned char *p_str)
{
//  u8 i = 0;
  while(*p_str != '')
  {
    UART2_SendByte(*p_str);
 //   Delay(1000);
    p_str++;
  }
}




PUTCHAR_PROTOTYPE
{
  
  UART2_SendData8(c);
  
  while (UART2_GetFlagStatus(UART2_FLAG_TXE) == RESET);
  return (c);
}


GETCHAR_PROTOTYPE
{
#ifdef _COSMIC_
  char c = 0;
#else
  int c = 0;
#endif
  
  while (UART2_GetFlagStatus(UART2_FLAG_RXNE) == RESET);
  c = UART2_ReceiveData8();
  return (c);
}