用帶ADC的avr單片機做的一款電壓檢測表

ID:21069 · 發表于 2018-12-7 20:15

電路原理圖如下：

單片機源碼：
#include <iom16v.h>
#include <macros.h>

#define  uchar  unsigned char
#define  uint unsigned int

void delayms(uint mS)       //微秒
{
      uint i,j;
      for( i=0;i<mS;i++)
            for(j=0;j<200;j++);
}

unsigned char disp[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,
                     0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E};

uint ADC_Value;

void port_init(void)
{
DDRD = 0xff;
PORTD= 0x00;
DDRE = 0xff;
PORTE= 0x00;
DDRF = 0x00;
PORTF= 0x00;
}

void adc_init(void)
{
ADMUX = 0x00;
ADCSRA= 0x00;
ACSR  =1<<ACD;
ADMUX =(1<<REFS0);
ADCSRA=(1<<ADEN)|(0<<ADFR)|(1<<ADPS2)|(1<<ADPS1)|(1<<ADPS0);
}

uint ADC_read(void)
{
uint ADC_L,ADC_H,temp;
ADCSRA |= (1<<ADSC);
ADC_L = ADCL;
ADC_H = ADCH;
temp  = (ADCH<<8)|ADC_L;
return temp;
}

uint  convert(uint data)
{
long temp1;
uint temp2;
temp1 = ((500 * (long)data)>>10);
temp2 = (uint)temp1;
return temp2;
}

void main(void)
  {
   uint voltage;
   uchar n;
   port_init();
   adc_init();

      DDRA=0XFF;
      PORTA=0XFF;

      DDRC=0XFF;
      PORTC=0X00;

      DDRF|=0X0E;
      PORTF|=0X0E;
      PORTF&=0xF7;

      PORTA=0X00;

      DDRB |=0X10;
      PORTB|=0X10;

while(1)
{
   ADC_Value = ADC_read();       //讀取AD寄存器中的數值
   voltage = convert(ADC_Value); //計算實際的輸入電
   for(n=0;n<50;n++)
         display(voltage);             //顯示
}

全部源碼在附件中,以上只是部份源碼

用帶ADC單片機做的一款電壓檢測表源碼.rar (966 Bytes, 下載次數: 53)

用帶ADC單片機做的一款電壓檢測表原理圖.rar (182.17 KB, 下載次數: 49)