ardupilot/libraries/AP_HAL_Linux/RCInput_ZYNQ.h

#pragma once

/*
  This class implements RCInput on the ZYNQ / ZyboPilot platform with custom
  logic doing the edge detection of the PPM sum input
 */

#include "RCInput.h"

namespace Linux {

class RCInput_ZYNQ : public RCInput {
public:
    void init();
    void _timer_tick(void);

private:
    static const int TICK_PER_US=100;
    static const int TICK_PER_S=100000000;

    // Memory mapped keyhole register to pulse input FIFO
    volatile uint32_t *pulse_input;

    // time spent in the low state
    uint32_t _s0_time;
};

}