串口调试程序.txt

检查串口是否良好,经测试多次

#include <REG51.H>
unsigned char string[]={"jiangguanghuan"};

int count;
count=1000;
void init_serialcomm(void);
void send_char_com(unsigned char ch);
void send_string_com(unsigned char *str,unsigned int strlen);


//向串口发送一个字符串，strlen为该字符串长度 
void send_string_com(unsigned char *str,unsigned int strlen)
{
    unsigned int k=0;
    do 
      {
          send_char_com(*(str + k));
          k++;
      } while(k < strlen);
}
void init_serialcomm(void)
{
      SCON=0x50;      
      TMOD=0x20;      
      PCON=0x00;     
      TH1=0xF3;  //波特率2400
      TL1=0xF3; 
      TR1=1;
      EA=1;
      TI=0;
}
//向串口发送一个字符 
void send_char_com(unsigned char ch) 
{
      SBUF=ch;
    while(TI==0);
      TI=0;
}


int main(void)
{
init_serialcomm();
while(1)
{

count--;
if(count==0)
{count=1000;
send_char_com('a');
send_string_com(string,15);
}
}
}