ESP32AnalogRead.h

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#pragma once
#include <Arduino.h>
#include "esp_adc_cal.h"
#define V_REF 1100  // ADC reference voltage


class ESP32AnalogRead {
private:
    int myPin=0;
     esp_adc_cal_characteristics_t characteristics;
     adc_channel_t channel ;
     boolean attached=false;
public :
    ESP32AnalogRead(int pin=-1);
    ~ESP32AnalogRead(){}
    void attach(int pin);
    float readVoltage();
    uint32_t readMiliVolts();
};