ardupilot/libraries/AC_CustomControl/AC_CustomControl_PID.h

#pragma once

#include <AP_Common/AP_Common.h>
#include <AP_Param/AP_Param.h>
#include <AC_PID/AC_PID.h>
#include <AC_PID/AC_P.h>

#include "AC_CustomControl_Backend.h"

#ifndef CUSTOMCONTROL_PID_ENABLED
    #define CUSTOMCONTROL_PID_ENABLED AP_CUSTOMCONTROL_ENABLED
#endif

#if CUSTOMCONTROL_PID_ENABLED

class AC_CustomControl_PID : public AC_CustomControl_Backend {
public:
    AC_CustomControl_PID(AC_CustomControl& frontend, AP_AHRS_View*& ahrs, AC_AttitudeControl_Multi*& att_control, AP_MotorsMulticopter*& motors, float dt);

    // run lowest level body-frame rate controller and send outputs to the motors
    Vector3f update() override;
    void reset(void) override;

    // user settable parameters
    static const struct AP_Param::GroupInfo var_info[];

protected:
    // put controller related variable here
    float _dt;

    // angle P controller  objects
    AC_P                _p_angle_roll2;
    AC_P                _p_angle_pitch2;
    AC_P                _p_angle_yaw2;

	// rate PID controller  objects
    AC_PID _pid_atti_rate_roll;
    AC_PID _pid_atti_rate_pitch;
    AC_PID _pid_atti_rate_yaw;
};

#endif