uart_test.c

用于C51上的modbus协议

#include "STC89C58.h"
#include "TG01R.h"
#include <intrins.h>
#include "string.h"
#include "stdio.h"
void  Delay_50us(uint _time);    

uchar len;
 
static void com_isr(void) interrupt 4 using 1  {
    if(TI)  {
        TI=0;
        len++;
    }
}
        

main()  {
    uchar i;
    uchar xdata Xbuf[10]="welcome\n";
    TMOD=0x20;
    TL1=0xf3;TH1=0xf3;
    SCON=0xd0;PCON=0x00;
    EA=1;
    ES=1;
    TR1=1;
    
    i=0;
    for(i=0;i<10;i++)  {
        SBUF=Xbuf[i];
        Delay_50us(10);
    }
    printf("XData=%c",len);
    while(1);
}