單片機雙機主從串行通信源程序注釋詳細原理圖與Proteus仿真

ID:161768 · 發表于 2017-5-7 22:45

下面是單片機主從串行通信的proteus仿真原理圖（工程文件可到本帖附件中下載）：

以上仿真完美實現了單片機雙機通信.

單片機主從串行通信源程序如下：

# include <STC12C5A60S2.h>
# define uchar unsigned char
# define vtime 10000 //定時3ms，一幀8*3=24ms,頻率=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; //發送循環變量
uchar txdv[3];
void main( )
{
/* //m1:m0 00=標準； 01=推挽； 10=輸入； 11=開漏輸出
P2M1 = 0X00;
P2M0 = 0Xff;
P1M1 = 0X00;
P1M0 = 0Xff; //設定P2,P1推挽輸出
P3M1 = 0X0d;
P3M0 = 0X02;
*/ //
SCON = 0xd0;
PCON = 0X80;
TH1 = 0XFd;
TL1 = 0XFd;
IT0 = 1; // 中斷0為邊沿觸發
IT1 = 1; // 中斷1為邊沿觸發
TMOD = 0X21; //設定定時器0為16位計數方式
TH0 = (65536-vtime )/256;
TL0 = (65536-vtime )%256; //賦定時器0初值
ET0 = 1; //開定時器0中斷
TR0 = 1; //啟動定時器0計數
TR1 = 1; //啟動定時器1計數
EX1 = 1; //開中斷1
EX0 = 1; //開中斷0
SM2 = 0;
TB8 = 1;
ES = 1;
EA = 1; //開總中斷
while(1);
}
void t0_isp() interrupt 1
{
//uchar dm,wx;
TH0 = (65536-vtime )/256;
TL0 = (65536-vtime )%256; //賦定時器0初值
if(over_t != 0)
{
over_t--;
if(over_t==30)
{
if(addr==sub1)
{
// LED11=1;
IE0 = 0; //中斷0的源清零
EX0 = 1; //開中斷0
}
else
{
// LED21=1;
IE1 = 0; //中斷0的源清零
EX1 = 1; //開中斷0
}
}
if(over_t==0)
{
if(addr==sub1)
{
LED11=1;
//IE0 = 0; //中斷0的源清零
//EX0 = 1; //開中斷0
}
else
{
LED21=1;
//IE1 = 0; //中斷0的源清零
//EX1 = 1; //開中斷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; // 關中斷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; // 關中斷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];
}
}
}

復制代碼

//#include<reg51.h>
# include <STC12C5A60S2.h>
# define uchar unsigned char
# define vtime 6000 //定時3ms，一幀8*3=24ms,頻率=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};
//位選碼表
uchar code numi[]={0xfe,0xfd,0xfb,0xf7};
//顯示緩存
uchar V_ram[]={17,16,16,0};
uchar wi=0; //位選循環變量
uchar rn=0; //接收循環變量
uchar rxdv[3];
void main( )
{
/* //m1:m0 00=標準； 01=推挽； 10=輸入； 11=開漏輸出
P2M1 = 0X00;
P2M0 = 0Xff;
P1M1 = 0X00;
P1M0 = 0Xff; //設定P2,P1推挽輸出
P3M1 = 0X0d;
P3M0 = 0X02;
*/ //
SCON = 0xd0;
PCON = 0X80;
TH1 = 0XFd;
TL1 = 0XFd;
IT0 = 1; // 中斷0為邊沿觸發
IT1 = 1; // 中斷1為邊沿觸發
TMOD = 0X21; //設定定時器0為16位計數方式
TH0 = (65536-vtime )/256;
TL0 = (65536-vtime )%256; //賦定時器0初值
ET0 = 1; //開定時器0中斷
TR0 = 1; //啟動定時器0計數
TR1 = 1; //啟動定時器1計數
SM2=1;
if(key1==0)
{
addr=sub1;
IE1 = 0; //中斷1的源清零
EX1 = 1; // 開啟中斷1
}
if(key2==0)
{
addr=sub2;
IE0 = 0; //中斷0的源清零
EX0 = 1; // 開啟中斷0
}
V_ram[0]=addr;
ES=1;
EA = 1; //開總中斷
while(1);
}
void t0_isp() interrupt 1
{
uchar dm,wx;
TH0 = (65536-vtime )/256;
TL0 = (65536-vtime )%256; //賦定時器0初值
dm=distable[V_ram[wi]]; //取顯示段碼
wx=numi[wi]; //取位選碼
P1=0xff; //關顯示
P2=dm; //段碼賦給P0口
P1=wx; //點亮位選的那個數碼管
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; // 關中斷0
IE1 = 0; //中斷1的源清零
EX1 = 1; //開中斷1
}
void int1_isp() interrupt 2
{
addr=sub2;
V_ram[0]=addr;
EX1 = 0; // 關中斷1
IE0 = 0; //中斷0的源清零
EX0 = 1; //開中斷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;
…………限于本文篇幅余下代碼請從51黑下載附件…………