A/D转换实现0~5V测量并控制显示与报警

只看该作者 · 2010-6-26 09:14

A/D转换实现0~5V测量0~1V数码管显示数字量与模拟量；
1~2V显示学号;
2~3V显示HAPPY!!!;
3~4V从右至左滚动显示HAPPY!!!;
4.5V~ 报警

＃i nclude  <reg52.h>
#define uint unsigned int
#define uchar unsigned char
#define ulong unsigned long
sfr P1ASF=0x9d;
sfr ADC_CONTR=0xbc; //power  speed1 speed0 flag  st chs2 chs1 chs0
sfr ADC_RES=0xbd;
sfr ADC_RESL=0xbe;
sbit ser=P2^1;          //LED显示 595数据输入
sbit srclk1=P2^2;
sbit rclk1=P2^3;
sbit speak=P3^2;
                                                                        //    H A    P Y !
uchar idata  LED[ ]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xfe,0xbf,0x89,0x88,0x8c,0x99,0x7d,0xff};//共阳极段码表说明
uchar idata  bb[]={0,0,10,0,11,11,11,11},cc[]={0,0,10,0,11,11,11,11},dd[]={0,0,10,0,11,11,11,11},jj[]={0,0,10,0,11,11,11,11};
//--------------------------------------------------------------------
void delayXms(uint n)
{
uint i,j;
for(i=0;i<n;i++)
   for(j=0;j<125;j++);
}
//--------------------------------------------------------------------
void outbyte(uchar a,b)
{
uchar j;
for(j=0;j<8;j++) //位码移位串行输出
{    if(a&0x80) ser=1;  else  ser=0;
         a=a<<1;
         srclk1=0;
         srclk1=1;
}
  for(j=0;j<8;j++) //duan码移位串行输出
{    if(b&0x80) ser=1;  else  ser=0;
         b=b<<1;
         srclk1=0;
         srclk1=1;
}
rclk1=0; //595锁存脉冲
   rclk1=1;
  }
//--------------------------------------------------------------------
uint GET_AD_Result()//启动AD转换并返回转换值
{
uchar temp;
uint data_temp;
data_temp=0;
ADC_RES=0;
ADC_RESL=0;
ADC_CONTR|=0x08;//启动AD
re: temp=0x10;
temp&=ADC_CONTR;//查询ADC_FLAG，忙标志，转换完否
if(temp==0)
  goto re;
ADC_CONTR&=0xe0;//P1.0为AD输入口
data_temp=ADC_RES;
data_temp<<=2;
data_temp+=ADC_RESL;
return data_temp;
}
//--------------------------------------------------------------------
void main(void) using 0
{
      uint result,temp,i,a,c,d,e;
      uchar aa[3]={0,0,0};
P1ASF=0x01;
ADC_CONTR=0xe0;                //P1.0为AD输入口
      while(1)
      {
  result=GET_AD_Result();
  aa[2]=result*5/1024;    //模拟量显示0-5v 数学转换
  temp=result*5%1024;
  temp=temp*10;
      aa[1]=temp/1024;
  temp=temp%1024;
  temp=temp*10;
  aa[0]=temp/1024;
            bb[0]=result/1000;       //数字量显示1024 数学转换
            bb[1]=(result%1000)/100;
            bb[2]=(result%100)/10;
            bb[3]=result%10;
            dd[0]=6;
            dd[1]=0;
            dd[2]=1;
            dd[3]=1;
            dd[4]=3;
            dd[5]=1;
            dd[6]=8;
            dd[7]=0;
            cc[0]=16;
            cc[1]=16;
            cc[2]=16;
            cc[3]=15;
            cc[4]=14;
            cc[5]=14;
            cc[6]=13;
            cc[7]=12;

            jj[0]=17;
            jj[1]=17;
            jj[2]=17;
            jj[3]=17;
            jj[4]=17;
            jj[5]=17;
            jj[6]=17;
            jj[7]=17;
            e=0xfe;
            switch(aa[2]%10)
            {
                  case 0:
                           e=0x7f;
            a=0xfe;
            for(i=0;i<3;i++)    //模拟量显示0-5v
               {
                  c=LED[aa[i]];
                  if(i==2) c=c&0x7f;
                     outbyte(a,c);
                  a=(a<<1)|0x01;       //a数字量显示位码
               }
                           for(i=0;i<4;i++)    //数字量显示1024
               {
                  d=LED[bb[i]];
                  if(i==2) c=c&0x7f;
                     outbyte(e,d);
                  e=(e>>1)|0x80;       //e数字量显示位码
               } break;
                  case 1:
                           for(i=0;i<8;i++)
               {
                  d=LED[dd[i]];
                  if(i==2) c=c&0x7f;
                     outbyte(e,d);
                  e=(e<<1)|0x01;
               } break;
                  case 2:
                           for(i=0;i<8;i++)
               {
                  d=LED[cc[i]];
                  if(i==2) c=c&0x7f;
                     outbyte(e,d);
                  e=(e<<1)|0x01;
               } break;
                  case 3:
                           for(i=0;i<8;i++)
               {
                  d=LED[cc[i]];
                     outbyte(e,d);
                                 delayXms(1000);
                                 d=LED[jj[i]];
                  if(i==2) c=c&0x7f;
                     outbyte(e,d);
                  e=(e<<1)|0x01;
               }break;
                  case 4:
                           if(aa[1]>=5)
                              {
                                 speak=0;
                                 delayXms(1000);
                                 speak=1;
                                 delayXms(1000);
                              }
               break;
            }
}
}

只看该作者 · 2010-6-26 12:37

给点意见啊!!!!

只看该作者 · 2010-7-12 13:56

恭喜，写的不错

只看该作者 · 2010-8-4 15:38

学习了

只看该作者 · 2010-8-4 15:45

请各位帮帮我吧，我刚刚开始用C8051F410 的ADC和DAC,但是AD转换老出问题，采集不了外部电压，帮我看看ADC的配置以及时钟设置，谢谢了
//

#include "C8051F410.h"

#define SYSCLK       24500000 // SYSCLK频率（Hz）

// Peripheral specific initialization functions,
// Called from the Init_Device() function
void ADC_Init()
{
ADC0MX = 0x06;

ADC0CN = 0x80;

ADC0TK = 0xFB;

ADC0CF = ((SYSCLK/6000000)-1)<<3;
ADC0CF |= 0x00;                   // right-justify results
}

void DAC_Init()
{
IDA0CN = 0xF7;
}

void Voltage_Reference_Init()
{
REF0CN = 0x90;
}

void Port_IO_Init()
{
// P0.0  -  Skipped,    Push-Pull,  Analog
// P0.1  -  Unassigned,  Push-Pull,  Digital
// P0.2  -  Unassigned,  Push-Pull,  Digital
// P0.3  -  Unassigned,  Push-Pull,  Digital
// P0.4  -  Unassigned,  Push-Pull,  Digital
// P0.5  -  Unassigned,  Push-Pull,  Digital
// P0.6  -  Skipped,    Push-Pull,  Analog
// P0.7  -  Unassigned,  Push-Pull,  Digital

// P1.0  -  Unassigned,  Push-Pull,  Digital
// P1.1  -  Unassigned,  Push-Pull,  Digital
// P1.2  -  Skipped,    Push-Pull,  Analog
// P1.3  -  Unassigned,  Push-Pull,  Digital
// P1.4  -  Unassigned,  Push-Pull,  Digital
// P1.5  -  Unassigned,  Push-Pull,  Digital
// P1.6  -  Unassigned,  Push-Pull,  Digital
// P1.7  -  Unassigned,  Push-Pull,  Digital

// P2.0  -  Unassigned,  Push-Pull,  Digital
// P2.1  -  Unassigned,  Push-Pull,  Digital
// P2.2  -  Unassigned,  Push-Pull,  Digital
// P2.3  -  Unassigned,  Push-Pull,  Digital
// P2.4  -  Unassigned,  Push-Pull,  Digital
// P2.5  -  Unassigned,  Push-Pull,  Digital
// P2.6  -  Unassigned,  Push-Pull,  Digital
// P2.7  -  Unassigned,  Push-Pull,  Digital

P0MDIN = 0xBE;
P1MDIN = 0xFB;

P0MDOUT = 0xFF;
P1MDOUT = 0xFF;
P2MDOUT = 0xFF;

P0SKIP = 0x41;
P1SKIP = 0x04;

XBR1    = 0x40;
}

void Oscillator_Init()
{
OSCICN = 0x87;                   // configure internal oscillator for
                                    // 24.5MHz
RSTSRC = 0x04;                   // enable missing clock detector
}

void Interrupts_Init()
{
EIE1    = 0x08;
IE       = 0x80;
}

// Initialization function for device,
// Call Init_Device() from your main program
void Init_Device(void)
{
ADC_Init();
DAC_Init();
Voltage_Reference_Init();
Port_IO_Init();
Oscillator_Init();
Interrupts_Init();
}

// Close WDT
// Call WDT_DISABLE() from the main program
void WDT_DISABLE(void)
{
EA=0;
PCA0MD = ~0x40 ;
EA=1;
}

void main(void)
{
// unsigned char i = 0;
WDT_DISABLE();    //关闭WDT；
Init_Device();    //主初始化；

while(1)
{
// for(i = 0;i < 32000;i++);
AD0BUSY = 1;          //开AD
while(AD0BUSY);       //等待AD转换结束
while(AD0INT)
{
IDA0L = ADC0L;
IDA0H = ADC0H;

AD0INT = 0;
}
}
}

A/D转换实现0~5V测量并控制显示与报警

相关下载

相关帖子