keil c51串口打印变量

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#include <reg52.h> #include <stdio.h> #include <stdlib.h>   void main() {     unsigned char a = 256;     int d = a;       int c = (int)a;       SCON = 0X50;    //串口方式1,允许接收     TMOD = 0X20;    //定时器1定时方式2     TCON = 0X40;    //设定定时器1开始计数     TH1 = 0XE8;     //11.0592MHz 1200波特率     TL1 = 0XE8;     TI = 1;     TR1 = 1;     while(1)     {         printf("c=%d\n", c);         printf("d+1=%d\n", d + 1);         printf("Hello world !\n");     }     }

 F11 单步调试

 更加简洁的版本，设定中断标志位TI=1,发送完成：

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#include <STC15Fxxxx.h> #include <stdio.h>     void stic() {     unsigned char x=0;     x++;     printf("%bd \t",x);   } void main() {       TI=1;     printf("Hello world! \r\n");     //stic();     //stic();     //stic();     while(1);   }