#ifndef __AP_HAL_AVR_RC_INPUT_H__
#define __AP_HAL_AVR_RC_INPUT_H__

#include <AP_HAL.h>
#include "AP_HAL_AVR_Namespace.h"

#define AVR_RC_INPUT_NUM_CHANNELS 8

class AP_HAL_AVR::APM1RCInput : public AP_HAL::RCInput {
public:
    /**
     * init:
     * HAL_AVR::init should pass in a AP_HAL_AVR::ISRRegistry* as a void*
     */
    void     init(void* isrregistry);

    /**
     * valid():
     * Return the number of currently valid channels.
     * Typically 0 (no valid radio channels) or 8 (implementation-defined)
     * Could be less than or greater than 8 depending on your incoming radio
     * or PPM stream
     */
    uint8_t  valid();

    /**
     * read(uint8_t):
     * Read a single channel at a time
     */
    uint16_t read(uint8_t ch);

    /**
     * read(uint16_t*,uint8_t):
     * Read an array of channels, return the valid count
     */
    uint8_t  read(uint16_t* periods, uint8_t len);

private:
    /* private callback for input capture ISR */
    static void _timer4_capt_cb(void);
    /* private variables to communicate with input capture isr */
    static volatile uint16_t _pulse_capt[AVR_RC_INPUT_NUM_CHANNELS];
    static volatile uint8_t  _valid;
};

class AP_HAL_AVR::APM2RCInput : public AP_HAL::RCInput {
    /* Pass in a AP_HAL_AVR::ISRRegistry* as void*. */
    void     init(void* isrregistry);
    uint8_t  valid();
    uint16_t read(uint8_t ch);
    uint8_t  read(uint16_t* periods, uint8_t len);
private:
    /* private callback for input capture ISR */
    static void _timer5_capt_cb(void);
    /* private variables to communicate with input capture isr */
    static volatile uint16_t _pulse_capt[AVR_RC_INPUT_NUM_CHANNELS];
    static volatile uint8_t  _valid;
};

#endif // __AP_HAL_AVR_RC_INPUT_H__