AT80C51串口通信编程 | 按键控制LED灯列-白红宇

uart8051.h：

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#ifndef __UART_H__#define __UART_H__#define XTAL 12000000#define baudrate 9600char UART_putchar(char ch);char UART_getkey(void);void InitCom(void);#endif

uart8051.c：

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#include 
     
      #include "uart8051.h"char UART_putchar(char ch){    if(ch=='\n')    {        SBUF = 0x0d;        while(TI == 0);          TI=0;        SBUF = 0x0a;    }        else          SBUF = ch;    while(TI == 0);    TI = 0;    return ch;}char UART_getkey(void){    char c;        while(!RI);    c = SBUF;    RI = 0;    return(c);}void InitCom(void){    SCON=0X50;    TMOD=0X20;    PCON=0X80;    TH1=0XF3;    TL1=0XF3;    ES=0;    EA=1;    TR1=1;}

main.c:

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#include 
     
      #include 
      
       #include "uart8051.h"char putchar(char ch){    return UART_putchar(ch);}char _getkey(void){    return UART_getkey();}void main(void){        unsigned int tem;    InitCom();    printf("´®¿Ú²âÊÔ£¬³£¹æÊ¹ÓÃ:\n");    UART_putchar('A');UART_putchar(' ');    UART_putchar('B');UART_putchar(' ');    UART_putchar('C');UART_putchar(' ');    UART_putchar('D');UART_putchar(' ');    UART_putchar('\n');        printf("Ç¿´óµÄ¸ñÊ½»¯Á÷Êä³ö£º\n");    printf("Êä³öÒ»¸öÕûÐÎ£º%d\n",(int)6886);    printf("Êä³öÒ»¸öÊµÐÍ£º%d\n",(float)68.86);    while(1)    {        printf("\nÊäÈëÒ»¸öÕûÐÍ£¬ËÍP2¿Ú×¢Òâ¹Û²ìP2¿ÚµÄµÆ:\n");        scanf("%d",&tem);                P2=tem;    }}

编译之后，打开烧录软件烧录，然后打开串口通信助手进行调试：

如上图，分别输入1+空格，2+空格，3+空格，效果图如下：

1+空格：

2+空格：

3+空格：