stm8s103串口

#include "uart.h"

#define UART2
#define uart_115200 1

void Init_UART2(void)
{
#ifdef UART2
      UART1_CR1=0x00;
      UART1_CR2=0x00;
      UART1_CR3=0x00;
#ifdef uart_9600
      UART1_BRR2=0x03;    //  16M 9600   682
      UART1_BRR1=0x68;
#endif
#ifdef uart_115200
      UART1_BRR2=0x0b;  //16M  115200   D05
      UART1_BRR1=0x08; //  8B
#endif
      UART1_CR2|=0x2c;//允许接收，发送，开接收中断
#endif
}

/*
发送一个字符
*/
void UART2_sendchar(unsigned char td)
{
#ifdef UART2
    while((UART1_SR & 0x80)==0x00);
      UART1_DR=td;
#endif
}

/*
发送一个字符串，遇到\0结束
*/
void UART2_sendstr(unsigned char *pStr)//发送字符串
{
#ifdef UART2
  while(*pStr)
  {
    UART2_sendchar(*pStr++);
  }
#endif
}

/*
串口发送N字节数据
*/
void UART2_sendNByte(unsigned char *pStr,unsigned char len)
{
#ifdef UART2
    for(;len>0;len--)
    {
        UART2_sendchar(*pStr++);
    }
#endif
}

#pragma vector= _INT_UART1_RX//UART2_R_OR_vector//0x19
__interrupt void UART2_R_OR_IRQHandler(void)
{
    volatile unsigned char i;
    while(!(UART1_SR&0X20)==0X20);//UART2_SR &=~0X20;
    UART1_SR&=(~0x20);
    i=UART1_SR;
    return;
}