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標(biāo)題: 兩個單片機之間的通訊和控制的問題 [打印本頁]

作者: 888zhjzhj 時間: 2015-3-28 22:22
標(biāo)題: 兩個單片機之間的通訊和控制的問題
這是STC12C5A60S2單片機連續(xù)測得8路模擬量，在本單片機中顯示通道號和數(shù)值（0-1024），并通過串口輸出下個單片機

#include"STC12C5A60S2.h"
#include"intrins.h"
unsigned char code LedChar[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f };
unsigned char LedBuff[ ]={0xff,0xff,0xff,0xff,0xff };
unsigned int a = 0;
float AD_val = 0;
//------------------------------------------------------------------------------
void AD_init();
void serial_init();
void delay(unsigned int b);
float AD_work(unsigned char channel);
unsigned int AD_get(unsigned char channel);

void main()
{
    TMOD = 0x01;
TH0 = 0xFC;
TL0 = 0x67;
TR0 = 1;
EA = 1;
ET0 = 1;

AD_init(); //A/D轉(zhuǎn)換初始化
serial_init(); //串口初始化
while(1)
{
      float b;
      unsigned char e, i,j=0;
      for(i=0;i<8;i++) //循環(huán)發(fā)送P1.0-P1.7的轉(zhuǎn)換數(shù)值
      {  b=AD_work(i);
         a=(unsigned int)b ;
         LedBuff[0] = LedChar[a%10];
LedBuff[1] = LedChar[a/10%10];
LedBuff[2] = LedChar[a/100%10];
LedBuff[3] = LedChar[a/1000%10];
LedBuff[4] = LedChar[i];

         if(j==0)  { SBUF = i; while(!TI); TI=0;j++;}
         if(j==1)  {  SBUF = a; while(!TI); TI=0;j++;}
         if(j==2)  {  e = a>>8; SBUF = e;while(!TI);TI=0;j=0;}
         delay(2000); //延時約2s
      }
}
}
//------------------------------------------------------------------------------
unsigned int AD_get(unsigned char channel)
{
  ADC_CONTR=0x88|channel; //開啟AD轉(zhuǎn)換1000 1000 即POWER SPEED1 SPEED0 ADC_FLAG ADC_START CHS2 CHS1 CHS0
  _nop_(); _nop_(); _nop_(); _nop_();//要經(jīng)過4個CPU時鐘的延時，其值才能夠保證被設(shè)置進ADC_CONTR 寄存器
  while(!(ADC_CONTR&0x10)); //等待轉(zhuǎn)換完成
  ADC_CONTR&=0xe7;    //關(guān)閉AD轉(zhuǎn)換，ADC_FLAG位由軟件清0
  return(ADC_RES*4+ADC_RESL); //返回AD轉(zhuǎn)換完成的10位數(shù)據(jù)(16進制)
}
//------------------------------------------------------------------------------
float AD_work(unsigned char channel)
{
  float AD_val;    //定義處理后的數(shù)值A(chǔ)D_val為浮點數(shù)
  unsigned char i;
  for(i=0;i<100;i++)
  AD_val+=AD_get(channel); //轉(zhuǎn)換100次求平均值(提高精度)
  AD_val/=100;
  return AD_val;
}
//------------------------------------------------------------------------------
void delay(unsigned int b) //延時約1ms
{
unsigned int i;
while (--b!=0)
for(i=600;i>0;i--); //1T單片機i=600，若是12T單片機i=125
}

//------------------------------------------------------------------------------
void AD_init()
{
P1ASF=0xff; //P1口全部作為模擬功能AD使用
ADC_RES=0; //清零轉(zhuǎn)換結(jié)果寄存器高8位
ADC_RESL=0; //清零轉(zhuǎn)換結(jié)果寄存器低2位
ADC_CONTR=0x80;//開啟AD電源
delay(2); //等待1ms，讓AD電源穩(wěn)定
}

   unsigned char j = 0;
   void InterruptTimer0()  interrupt 1
{
TH0 = 0xFC;
TL0 = 0x67;
P0 = 0xFF;
   if(j == 0) {P2=7; j++; P0=LedBuff[0];}  //數(shù)碼港顯示
   else if(j == 1) {P2=6; j++; P0=LedBuff[1];}
         else if(j == 2) {P2=5; j++; P0=LedBuff[2];}
         else if(j == 3) {P2=4; j++; P0=LedBuff[3];}
   else if(j == 4) {P2=0; j=0; P0=LedBuff[4];}
}
void serial_init()
{
TMOD=0x20;
TH1=0xfd;
TL1=0xfd; //設(shè)置9600波特率
SCON=0x50; //串口方式1，允許接收
TR1=1;
}

void InterruptUART() interrupt 4
{ }

下面是90c516單片機，接受上單片機發(fā)來的數(shù)據(jù)和通道號，在1602液晶顯示

#include<reg52.h>
#define uchar unsigned char
#define uint  unsigned int
sbit lcden=P0^5;
sbit lcdrw=P0^6;
sbit lcdrs=P0^7;
sbit jidianqi=P0^0;
uchar a,b, tab ;
uint tab1 ;

void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void write_com(uchar com)
{
lcdrs=0;
P2=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}

void write_data(uchar date)
{
lcdrs=1;
P2=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void init()
{

lcden=0;
write_com(0x38);
write_com(0x0e);
write_com(0x06);
write_com(0x01);
write_com(0x80+0x03);
}
/* 串口配置函數(shù)，baud-通信波特率 */
void ConfigUART(unsigned int baud)
{
SCON  = 0x50;  //配置串口為模式1
TMOD &= 0x0F;  //清零T1的控制位
TMOD |= 0x20;  //配置T1為模式2
TH1 = 256 - (11059200/12/32)/baud;  //計算T1重載值
TL1 = TH1;    //初值等于重載值
ET1 = 0;    //禁止T1中斷
ES  = 1;    //使能串口中斷
TR1 = 1;    //啟動T1
}

void UartRead(  )
{
   uchar j=0;
   if(j==0)  { while(!RI);  tab=SBUF; RI=0; j++;}
   if(j==1)  { while(!RI);  a=SBUF; RI=0; j++;}
   if(j==2)  { while(!RI);  b=SBUF;  RI=0;  j=0;}

   tab1=(b<<8)|((unsigned int)a);
}

void InterruptUART() interrupt 4
{
   if (RI)  //接收到新字節(jié)
{
      RI = 0;  //清零接收中斷標(biāo)志位

}
if (TI)  //字節(jié)發(fā)送完畢
{
      TI = 0; //清零發(fā)送中斷標(biāo)志位
}
}

uchar qian,bai,shi,ge;       //聲明兩個變量用來分解data1

void main()
{
lcdrw=0;
init();
ConfigUART(9600);

while(1)

{

UartRead( ) ;
delay(20);
write_com(0x80+0x03);
write_data(tab+0x30);
delay(20);

qian= tab1/1000;
bai=  tab1%1000/100;
shi=  tab1%100/10;       //將十位分離出來
ge= tab1%10;       //將個位分離出來
write_com(0x80+0x41);//要寫的地方，這里是第二行
write_data(qian+0x30);
delay(20);
write_data(bai+0x30);
delay(20);
write_data(shi+0x30);//調(diào)用1602字庫，0x30+shi表示0-9數(shù)字，寫完后地址自動加一指針。
delay(20);
write_data(ge+0x30);
delay(20);
if(tab==0) {
            if(tab1>500) {jidianqi=0;}
else       {jidianqi=1;}
            }
  }
}

問題是，控制繼電器太慢，循環(huán)一周后繼電器動作，現(xiàn)在要他tab1大于500數(shù)值（比仿50度溫度），立刻繼電器動作，通道號和數(shù)值循環(huán)不變，請問各位老師該如何做？

作者: 888zhjzhj 時間: 2015-4-1 19:10
為什么沒有人回答，這道題怎么難嗎？

作者: 888zhjzhj 時間: 2015-4-5 22:37
沒有人回答，我自己改進了一下，效果不很理想。有時1602液晶顯示跑掉，通道號不變，繼電器反應(yīng)快了

這是STC12C5A60S2單片機的

#include"STC12C5A60S2.h" //頭文件在STC公司主頁上下載
#include"intrins.h"
unsigned char code LedChar[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f };
unsigned char LedBuff[ ]={ 0x3f, 0x3f,  0x3f, 0x3f , 0x3f };
unsigned int g,  a = 0, n=0 ;
unsigned char d , m=0;
float AD_val = 0;
//------------------------------------------------------------------------------
void AD_init();
void serial_init();
void delay(unsigned int b);
float AD_work(unsigned char channel);
unsigned int AD_get(unsigned char channel);
void display(unsigned int g );
//------------------------------------------------------------------------------
void main()
{
unsigned char j, e=0 ;
float b;
unsigned int Led[]={ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff };
    TMOD = 0x01;
TH0 = 0xFC;
TL0 = 0x67;
TR0 = 1;
EA = 1;
ET0 = 1;
AD_init(); //A/D轉(zhuǎn)換初始化
serial_init(); //串口初始化
while(1)
{
  for(d =0;d <8;d++) //循環(huán)發(fā)送P1.0-P1.7的轉(zhuǎn)換數(shù)值
{          b=AD_work(d );
            a=(unsigned int)b ;
Led[d] = a;
      if(j==0)  { SBUF = d; while(!TI); TI=0; j++;}
         if(j==1)  { SBUF = a; while(!TI); TI=0; j++;}
         if(j==2)  { e = a>>8; SBUF = e; while(!TI); TI=0; j=0; n++;}

if(n>=640) { n=0;  m=0; }
               switch(m=n/80)
   {
case 0:
g= Led[0] ;
                     display( g  ) ;
break;
case 1:
g= Led[1] ;
display( g ) ;
break;
case 2:
g= Led[2] ;
display( g ) ;
break;
case 3:
g= Led[3] ;
display( g  ) ;
break;
case 4:
g= Led[4] ;
                     display( g ) ;
break;
case 5:
g= Led[5] ;
                     display( g  ) ;
break;
case 6:
g= Led[6] ;
                     display( g  );
break;
case 7:
     g= Led[7] ;
                     display( g  ) ;
break;
}
   }
      }
}

void display(unsigned int g  )
{
LedBuff[0] = LedChar[g%10];
LedBuff[1] = LedChar[g/10%10];
LedBuff[2] = LedChar[g/100%10];
LedBuff[3] = LedChar[g/1000%10];
LedBuff[4] = LedChar[m];
}
//------------------------------------------------------------------------------
unsigned int AD_get(unsigned char channel)
{
ADC_CONTR=0x88|channel; //開啟AD轉(zhuǎn)換1000 1000 即POWER SPEED1 SPEED0 ADC_FLAG ADC_START CHS2 CHS1 CHS0
_nop_(); _nop_(); _nop_(); _nop_();//要經(jīng)過4個CPU時鐘的延時，其值才能夠保證被設(shè)置進ADC_CONTR 寄存器
while(!(ADC_CONTR&0x10)); //等待轉(zhuǎn)換完成
ADC_CONTR&=0xe7;    //關(guān)閉AD轉(zhuǎn)換，ADC_FLAG位由軟件清0
return(ADC_RES*4+ADC_RESL); //返回AD轉(zhuǎn)換完成的10位數(shù)據(jù)(16進制)
}
//------------------------------------------------------------------------------
float AD_work(unsigned char channel)
{
float AD_val;    //定義處理后的數(shù)值A(chǔ)D_val為浮點數(shù)
unsigned char i;
for(i=0;i<50;i++)
AD_val+=AD_get(channel); //轉(zhuǎn)換100次求平均值(提高精度)
AD_val/=50;
//AD_val=(AD_val*5)/1024; //AD的參考電壓是單片機上的5v，所以乘5即為實際電壓值
return AD_val;
}
//------------------------------------------------------------------------------
void delay(unsigned int b) //延時約1ms
{
unsigned int i;
while (--b!=0)
for(i=600;i>0;i--); //1T單片機i=600，若是12T單片機i=125
}

//------------------------------------------------------------------------------
void AD_init()
{
P1ASF=0xff; //P1口全部作為模擬功能AD使用
ADC_RES=0; //清零轉(zhuǎn)換結(jié)果寄存器高8位
ADC_RESL=0; //清零轉(zhuǎn)換結(jié)果寄存器低2位
ADC_CONTR=0x80;//開啟AD電源
delay(2); //等待1ms，讓AD電源穩(wěn)定
}

unsigned char j = 0 ;
void InterruptTimer0()  interrupt 1
{
TH0 = 0xFC;
TL0 = 0x67;
P0 = 0xFF;

   if(j == 0)
{P2=7; j++; P0=LedBuff[0];}
else if(j == 1)
{P2=6; j++; P0=LedBuff[1];}
         else if(j == 2)
{P2=5; j++;  P0=LedBuff[2];}
else if(j == 3)
{P2=4; j++; P0=LedBuff[3];}
     else if(j == 4)
{P2=0; j=0; P0=LedBuff[4];}
}
void serial_init()
{
TMOD=0x20;
TH1=0xfd;
TL1=0xfd; //設(shè)置9600波特率
SCON=0x50; //串口方式1，允許接收
TR1=1;
}
void InterruptUART() interrupt 4 {}

作者: 888zhjzhj 時間: 2015-4-5 22:42
這是90c516單片機的程序，接受上單片機STC12C5A60S2發(fā)來的數(shù)據(jù)和通道號，在1602液晶顯示，在單片機STC12C5A60S2顯示是正確的，在1602液晶顯示數(shù)據(jù)明顯離譜

#include<reg52.h>
#define uchar unsigned char
#define uint  unsigned int
sbit lcden=P0^5;
sbit lcdrw=P0^6;
sbit lcdrs=P0^7;
sbit jidianqi=P0^0;
uchar a,b, tab,cnt=0 ;
uint tab1, num=0  ;
uint shuzu[]={ 0xff,0xffff,0x0fff,0x0800,0xff,0xff,0xff,0xff };

void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void write_com(uchar com)
{
lcdrs=0;
P2=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}

void write_data(uchar date)
{
lcdrs=1;
P2=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void init()
{
lcden=0;
write_com(0x38);
write_com(0x0e);
write_com(0x06);
write_com(0x01);
write_com(0x80+0x03);
}
/* 串口配置函數(shù)，baud-通信波特率 */
void ConfigUART(unsigned int baud)
{
SCON  = 0x50;  //配置串口為模式1
TMOD &= 0x0F;  //清零T1的控制位
TMOD |= 0x20;  //配置T1為模式2
TH1 = 256 - (11059200/12/32)/baud;  //計算T1重載值
TL1 = TH1;    //初值等于重載值
ET1 = 0;    //禁止T1中斷
ES  = 1;    //使能串口中斷
TR1 = 1;    //啟動T1
}

void UartRead(  )
{
   uchar j=0;
   if(j==0)  { while(!RI);  tab=SBUF; RI=0; j++;}
   if(j==1)  { while(!RI);  a=SBUF; RI=0; j++;}
   if(j==2)  { while(!RI);  b=SBUF;  RI=0;  j=0;}
   tab1=(b<<8)|((unsigned int)a);
   shuzu[tab] = tab1;
}

void InterruptUART() interrupt 4 { }
void Display( )
{
uchar  qian,bai,shi,ge ;       //聲明變量用來分解tab1
delay(20);
write_com(0x80+0x03);
write_data(cnt+0x30);
delay(20);

qian= shuzu[cnt]/1000;
bai=  shuzu[cnt]%1000/100;
shi=  shuzu[cnt]%100/10;       //將十位分離出來
ge= shuzu[cnt]%10;       //將個位分離出來
write_com(0x80+0x41);//要寫的地方，這里是第二行
write_data(qian+0x30);
delay(20);
write_data(bai+0x30);
delay(20);
write_data(shi+0x30);//調(diào)用1602字庫，0x30+shi表示0-9數(shù)字，寫完后地址自動加一指針。
delay(20);
write_data(ge+0x30);
delay(20);
}
void InterruptTimer0()  interrupt 1
{
TH0 = 0xFC;
TL0 = 0x67;
num++;
if(num==1000) {num=0; Display( ); cnt++; }
if(cnt>7)    {cnt=0;}
}
void main()
{
TMOD = 0x01;
TH0 = 0xFC;
TL0 = 0x67;
TR0 = 1;
EA = 1;
ET0 = 1;
lcdrw=0;
init();
ConfigUART(9600);
while(1)
{
UartRead( ) ;
if(tab==1){
if(shuzu[1]>500) {jidianqi=0;}
else          {jidianqi=1;}
            }
}
}

作者: 888zhjzhj 時間: 2015-4-5 22:44
各位老師能指點一二，在下感激不盡。

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