TEST/ZStack-2.5.1a/Projects/zstack/Samples/EndDeviceEB/Source/adc_sensor.c

#include "adc_sensor.h"

#if (GP2Y1014AU_EN==1)

#define PMLED_CTR_PIN       P1_1 //p11 pm传感器的控制引脚
#define PMLED_CTR_PORT      P1DIR
#define PMLED_CTR_NUM       GPIO_1
//引脚配置为输出；
#define PMLED_CTR_OUT()    { PMLED_CTR_PORT |= PMLED_CTR_NUM; asm("NOP"); } 

#define PMADC_PIN_NUM       GPIO_6    //传感器adc输入端口 adc端口只有p0口才有  这里就是0-7参数    
#define PMADC_CHANNEL       HAL_ADC_CHANNEL_6
#define PMADC_INPUT_IN()     { APCFG|=PMADC_PIN_NUM;asm("NOP");}

void GP2Y1014AU_Init(void)  //pm2.5 传感器
{
    PMLED_CTR_OUT();
    PMADC_INPUT_IN();
    HalAdcInit();
    HalAdcSetReference(HAL_ADC_REF_AVDD);
}

uint16 get_gp2y1014au_value(void)
{
    long Pm_Val=0;
    int Value=0;
    PMLED_CTR_PIN=0;
    system_delay_us(280);
    Pm_Val =  HalAdcRead(PMADC_CHANNEL,HAL_ADC_RESOLUTION_14);//adc转换
    Pm_Val = (Pm_Val*3300)/8192;//转换成电压
    system_delay_us(40);//延时一会关闭传感器led
    PMLED_CTR_PIN=1;
    system_delay_us(9680);
    Pm_Val/=10;//转换成ug/m3
    Value=Pm_Val;
    Value-=30;//去掉0点漂移
    if(Value<0)
    {
      Value=0;
    }
    return Value;
}
#endif