ardupilot/libraries/AP_ADC/AP_ADC_ADS7844.h

/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
#pragma once

#include <inttypes.h>
#include "AP_ADC.h"
#include <AP_HAL/AP_HAL.h>

class AP_ADC_ADS7844 : public AP_ADC
{
public:
    AP_ADC_ADS7844();      // Constructor
    void                Init();

    // Read 1 sensor value
    float               Ch(unsigned char ch_num);

    // Read 6 sensors at once
    uint32_t            Ch6(const uint8_t *channel_numbers, float *result);

    // check if Ch6 would block
    bool                new_data_available(const uint8_t *channel_numbers);

    // Get minimum number of samples read from the sensors
    uint16_t            num_samples_available(const uint8_t *channel_numbers);

private:
    void read(void);
    AP_HAL::SPIDeviceDriver *_spi;
    AP_HAL::Semaphore  *_spi_sem;
};