AdcDevice.h

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/**
 * @file    AdcDevice.h
 *
 * @date May 3, 2014
 * @author Andrey Belomutskiy, (c) 2012-2020
 */
 
#pragma once
 
#if HAL_USE_ADC
 
#ifndef ADC_MAX_CHANNELS_COUNT
#define ADC_MAX_CHANNELS_COUNT 16
#endif /* ADC_MAX_CHANNELS_COUNT */
 
#ifndef SLOW_ADC_CHANNEL_COUNT
#ifdef ADC_MUX_PIN
#define SLOW_ADC_CHANNEL_COUNT 32
#else // not ADC_MUX_PIN
#define SLOW_ADC_CHANNEL_COUNT 16
#endif // def ADC_MUX_PIN
#endif // SLOW_ADC_CHANNEL_COUNT
 
class AdcDevice {
public:
    explicit AdcDevice(ADCDriver *p_adcp, ADCConversionGroup* p_hwConfig, volatile adcsample_t *p_buf, size_t p_depth);
    int enableChannel(adc_channel_e hwChannel);
    /* Should be called from ISR context */
    void startConversionI(void);
    adc_channel_e getAdcChannelByInternalIndex(int index) const;
    adcsample_t getAvgAdcValue(adc_channel_e hwChannel);
    adcsample_t getAdcValueByToken(AdcToken token)
    {
        /* TODO: validate token? */
 
        /* TODO: in case depth > 1 this will return random (not last) sample */
        return samples[token];
    };
    AdcToken getAdcChannelToken(adc_channel_e hwChannel);
    int size() const;
    void init(void);
 
private:
    ADCDriver *adcp;
    ADCConversionGroup* hwConfig;
    volatile adcsample_t *samples;
    size_t depth;
    uint8_t internalAdcIndexByHardwareIndex[EFI_ADC_TOTAL_CHANNELS];
    /**
     * Number of ADC channels in use
     */
    size_t channelCount = 0;
};
 
#endif /* HAL_USE_ADC */