temperature.c

来自「无线单片机CC1110的一些使用源代码」· C语言 代码 · 共 52 行

#include "emot.h"
#include "hal.h"

#define ADC_INPUT_GM        ADC_AIN1

#define COUNT_NUM     10   //采样次数设置

extern char aa[4];        //显示缓冲

extern uchar LEDPOINT;    //小数点在该位后显示


void adc_main(void)
{
  INT16 tt = 0;
  float adcdis;
  uint i;
  UINT16 abc;

  while(1)
  {
    abc = 0;
    i = COUNT_NUM;
    while(i--)
    {
#ifdef PHOTO
    tt = halAdcSampleSingle(ADC_REF_AVDD, ADC_12_BIT, ADC_AIN1);
#endif

#ifdef POT
    tt = halAdcSampleSingle(ADC_REF_AVDD, ADC_12_BIT, ADC_AIN2);
#endif

    halWait(1);
    abc += tt;
    }
    abc /= COUNT_NUM;
    adcdis = abc*3.3/2048;  //12位精度 ，一位符号位，2^13

    LEDPOINT = 0;
     adcdis *= 1000;         //显示处理
     aa[0] = (uchar)(adcdis/10/10/10);
     aa[1] = (uchar)(adcdis/10/10)%10;
     aa[2] = (uchar)(adcdis/10)%10;
     aa[3] = (uchar)(adcdis)%10;

  }
}