单片机双机主从串行通信源程序注释详细原理图与Proteus仿真 -

# include <STC12C5A60S2.h>
# define uchar unsigned char
# define vtime 10000 //定时3ms，一帧8*3=24ms,频率=40Hz
# define sub1 0x11
# define sub2 0x12
sbit LED11=P1^0;
sbit LED12=P1^1;
sbit LED21=P1^2;
sbit LED22=P1^3;
uchar over_t=0;
uchar addr=sub1,sum=0,count1,count2;
//uchar i,j,temp,m=0x01;
uchar tn=0; //发送循环变量
uchar txdv[3];
void main( )
{
/* //m1:m0 00=标准； 01=推挽； 10=输入； 11=开漏输出
P2M1 = 0X00;
P2M0 = 0Xff;
P1M1 = 0X00;
P1M0 = 0Xff; //设定P2,P1推挽输出
P3M1 = 0X0d;
P3M0 = 0X02;
*/ //
SCON = 0xd0;
PCON = 0X80;
TH1 = 0XFd;
TL1 = 0XFd;
IT0 = 1; // 中断0为边沿触发
IT1 = 1; // 中断1为边沿触发
TMOD = 0X21; //设定定时器0为16位计数方式
TH0 = (65536-vtime )/256;
TL0 = (65536-vtime )%256; //赋定时器0初值
ET0 = 1; //开定时器0中断
TR0 = 1; //启动定时器0计数
TR1 = 1; //启动定时器1计数
EX1 = 1; //开中断1
EX0 = 1; //开中断0
SM2 = 0;
TB8 = 1;
ES = 1;
EA = 1; //开总中断
while(1);
}
void t0_isp() interrupt 1
{
//uchar dm,wx;
TH0 = (65536-vtime )/256;
TL0 = (65536-vtime )%256; //赋定时器0初值
if(over_t != 0)
{
over_t--;
if(over_t==30)
{
if(addr==sub1)
{
// LED11=1;
IE0 = 0; //中断0的源清零
EX0 = 1; //开中断0
}
else
{
// LED21=1;
IE1 = 0; //中断0的源清零
EX1 = 1; //开中断0
}
}
if(over_t==0)
{
if(addr==sub1)
{
LED11=1;
//IE0 = 0; //中断0的源清零
//EX0 = 1; //开中断0
}
else
{
LED21=1;
//IE1 = 0; //中断0的源清零
//EX1 = 1; //开中断0
}
}
}
}
void int0_isp() interrupt 0
{
count1++;
addr=sub1;
sum=sub1;
txdv[0]=addr;
sum=sum+count1;
txdv[1]=count1;
txdv[2]=sum;
TB8=1;
SBUF=sub1;
LED12=1;
LED11=0;
EX0 = 0; // 关中断0
over_t=50;
}
void int1_isp() interrupt 2
{
count2++;
addr=sub2;
sum=sub2;
txdv[0]=addr;
sum=sum+count2;
txdv[1]=count2;
txdv[2]=sum;
TB8=1;
SBUF=sub2;
LED22=1;
LED21=0;
EX1 = 0; // 关中断0
over_t=50;
}
void uart_isp( ) interrupt 4
{
if(RI==1)
{
RI=0;
if(addr==SBUF)
{
if(addr==sub1)
{
LED12=0;
}
if(addr==sub2)
{
LED22=0;
}
}
}
if(TI==1)
{
tn++;
TI=0;
if(tn>=3)
{
tn=0;
TB8=1;
return;
}
if(tn<3)
{
TB8=0;
SBUF=txdv[tn];
}
}
}

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//#include<reg51.h>
# include <STC12C5A60S2.h>
# define uchar unsigned char
# define vtime 6000 //定时3ms，一帧8*3=24ms,频率=40Hz
# define sub1 0x11
# define sub2 0x12
sbit key1=P3^2;
sbit key2=P3^3;
uchar over_t=0;
uchar addr=sub1,sum=0;
//uchar i,j,temp,m=0x01;
uchar code distable[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00,0x40,0x09};
//位选码表
uchar code numi[]={0xfe,0xfd,0xfb,0xf7};
//显示缓存
uchar V_ram[]={17,16,16,0};
uchar wi=0; //位选循环变量
uchar rn=0; //接收循环变量
uchar rxdv[3];
void main( )
{
/* //m1:m0 00=标准； 01=推挽； 10=输入； 11=开漏输出
P2M1 = 0X00;
P2M0 = 0Xff;
P1M1 = 0X00;
P1M0 = 0Xff; //设定P2,P1推挽输出
P3M1 = 0X0d;
P3M0 = 0X02;
*/ //
SCON = 0xd0;
PCON = 0X80;
TH1 = 0XFd;
TL1 = 0XFd;
IT0 = 1; // 中断0为边沿触发
IT1 = 1; // 中断1为边沿触发
TMOD = 0X21; //设定定时器0为16位计数方式
TH0 = (65536-vtime )/256;
TL0 = (65536-vtime )%256; //赋定时器0初值
ET0 = 1; //开定时器0中断
TR0 = 1; //启动定时器0计数
TR1 = 1; //启动定时器1计数
SM2=1;
if(key1==0)
{
addr=sub1;
IE1 = 0; //中断1的源清零
EX1 = 1; // 开启中断1
}
if(key2==0)
{
addr=sub2;
IE0 = 0; //中断0的源清零
EX0 = 1; // 开启中断0
}
V_ram[0]=addr;
ES=1;
EA = 1; //开总中断
while(1);
}
void t0_isp() interrupt 1
{
uchar dm,wx;
TH0 = (65536-vtime )/256;
TL0 = (65536-vtime )%256; //赋定时器0初值
dm=distable[V_ram[wi]]; //取显示段码
wx=numi[wi]; //取位选码
P1=0xff; //关显示
P2=dm; //段码赋给P0口
P1=wx; //点亮位选的那个数码管
wi++;
if(wi==4)wi=0;
if(over_t != 0)over_t--;
}
void int0_isp() interrupt 0
{
addr=sub1;
V_ram[0]=addr;
EX0 = 0; // 关中断0
IE1 = 0; //中断1的源清零
EX1 = 1; //开中断1
}
void int1_isp() interrupt 2
{
addr=sub2;
V_ram[0]=addr;
EX1 = 0; // 关中断1
IE0 = 0; //中断0的源清零
EX0 = 1; //开中断0
}
void uart_isp( ) interrupt 4
{
if(RI==1)
{
over_t=100;
RI=0;
rxdv[rn]=SBUF;
//V_ram[1]=rn;
if((rn==0)&&(addr==SBUF))
{
SM2=0;
rn++;
// V_ram[1]=rn;
sum=SBUF;
return;
}
if(rn==2)
{
if(sum==SBUF)
{
V_ram[1]=rxdv[1]/100;
if(V_ram[1]==0)V_ram[1]=0x10;
V_ram[2]=(rxdv[1]%100)/10;
if((V_ram[1]==16)&&(V_ram[2]==0x00))V_ram[2]=0x10;
V_ram[3]=(rxdv[1]%100)%10;
TB8=0;
SBUF=addr;
}
// V_ram[1]=rn;
rn=0;
SM2=1;
return;
}
if(rn==1)
{
rn++;
sum=sum+SBUF;
V_ram[1]=SBUF;
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