51單片機發(fā)送一個字符串失敗

ID:410182 · 發(fā)表于 2021-4-4 15:52

#include "uart.h"
void main(void)
{
uart_init();
      uart_send_byte('A');
      uart_send_sting("xxxxxxxx");
while(1);
}
這是主函數(shù)；
#include "uart.h"
//#include <intrins.h>
void uart_init(void)
{
      TMOD = 0X20;
      SCON = 0X50;
      TH1 = 0XF3;
      TL1 = 0XF3;//4800
PCON  = 0X80;
      ES =1;//¿aÖD¶Ï
      EA = 1;
      TR1 = 1;
}

void uart_send_byte(unsigned char c)
{
//μúò»2½￡¬·￠Ëíò»¸ö×Ö½ú
      SBUF = c;
      while(!TI);
      TI  = 0;
}

void uart_send_sting(unsigned char *str)
{
while(*str != '\0')
         {
                        uart_send_byte(*str);
      str++;
                     }
}
這是串口的子函數(shù)

ID:584814 · 發(fā)表于 2021-4-6 17:36

將 ES =1;//愀D
EA = 1;
注釋掉試試

ID:390416 · 發(fā)表于 2021-4-4 18:16

串口1打印程序可以打印3個十六位的變量波特率9600 http://www.torrancerestoration.com/bbs/dpj-201660-1.html

串口發(fā)送不需要while死等串口接收執(zhí)行軟件復(fù)位 http://www.torrancerestoration.com/bbs/dpj-200927-1.html

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