设计要求：
实现与Proteus中的8051单片机进行串行通信。先回顾一下串行通信。在串行通信中有两个引脚分别称为TX和RX。TX引脚用于发送数据，而RX引脚用于接收数据。
原理图和代码就直接放一下好了
#include
#define Baud_rate 0xFD
void SerialInitialize(void);
void SendByteSerially(unsigned char);
void cct_init(void);
sbit Appliance1 = P1^0;
sbit Appliance2 = P1^1;
sbit Appliance3 = P1^2;
sbit Appliance4 = P1^3;
sbit Appliance5 = P1^4;
sbit Appliance6 = P1^5;
sbit Appliance7 = P1^6;
sbit Appliance8 = P1^7;
void main()
{
cct_init();
SerialInitialize();
EA = 1;
ES = 1;
while(1) {;}
}
void cct_init(void)
{
P0 = 0x00;
P1 = 0x00;
P2 = 0x00;
P3 = 0x03;
}
void SerialInitialize(void)
{
TMOD = 0x20;
SCON = 0x50;
TH1 = Baud_rate;
TR1 = 1;
}
void SendByteSerially(unsigned char serialdata)
{
SBUF = serialdata;
while(TI == 0);
TI = 0;
}
void serial_ISR (void) interrupt 4
{
char chr;
if(RI==1)
{
chr = SBUF;
RI = 0;
}
P0 = ~P0;
switch(chr)
{
case '1': Appliance1 = 1; SendByteSerially('k'); break;
case '2': Appliance2 = 1; SendByteSerially('k'); break;
case '3': Appliance3 = 1; SendByteSerially('k'); break;
case '4': Appliance4 = 1; SendByteSerially('k'); break;
case '5': Appliance5 = 1; SendByteSerially('k'); break;
case '6': Appliance6 = 1; SendByteSerially('k'); break;
case '7': Appliance7 = 1; SendByteSerially('k'); break;
case '8': Appliance8 = 1; SendByteSerially('k'); break;
case 'a': Appliance1 = 0; SendByteSerially('k'); break;
case 'b': Appliance2 = 0; SendByteSerially('k'); break;
case 'c': Appliance3 = 0; SendByteSerially('k'); break;
case 'd': Appliance4 = 0; SendByteSerially('k'); break;
case 'e': Appliance5 = 0; SendByteSerially('k'); break;
case 'f': Appliance6 = 0; SendByteSerially('k'); break;
case 'g': Appliance7 = 0; SendByteSerially('k'); break;
case 'h': Appliance8 = 0; SendByteSerially('k'); break;
default: ; break;
}
RI = 0;
}
好像没什么特别需要注意的
