stm8S串口通信向电脑发送

chenjiabao · 发表于 2016-12-4 20:07:45

本帖最后由 chenjiabao 于 2016-12-4 20:16 编辑

#include "stm8s.h"
#include "led.h"
#include "delay.h"

void UART1_Init(void)
{
UART2->BRR2=0x01;//00-0d:9600（fcpu=fmaster=2MHz)
UART2->BRR1=0x34;//00-1a:4800; 01-34:2400

UART2->CR2=0x2c;
}
main()
{
      uint8_t i = 0;
      CLK->CKDIVR = 0x18;//2MHz

UART2_Init();
LED_Init();
LED_ON();
while (1)
  {

      if (i >= 16)
      {
            i = 0;
      }
   while(!(UART2->SR & 0x80));//发送寄存器数据是否转移完

   UART2->CR2 |= 0x00;
   UART2->DR=i; //要发送的数据
   UART2->CR2 |= 0x08; //

   while((UART2->SR & 0x40) == 0);//发送是否完成
      LED_REVERSAL();
      delay_ms(200);
  }
}

电脑上收到的就是0xFF。不变