servo_tester.c

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/*
 * Copyright (C) 2012 Ewoud Smeur <ewoud_smeur@msn.com>
 *
 * This file is part of paparazzi.
 *
 * paparazzi is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * paparazzi is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with paparazzi; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
 
#include "servo_tester.h"
#include "modules/core/commands.h"
#include "generated/airframe.h"
#include "generated/airframe.h"
#include "modules/actuators/actuators.h"
#include "generated/modules.h"
 
int32_t servo_test_val;
 
bool is_servo;
bool do_servo_run;
int32_t servo_run_counter;
int32_t servo_run_timer;
int32_t servo_run_step;
int32_t steps;
 
#ifndef TIME_PER_DEFLECTION
#define TIME_PER_DEFLECTION 0.8
#endif
 
int32_t servo_mean;
 
void servo_tester_init()
{
 
  steps = 8;
 
  servo_test_val = SERVO_SERVO_TEST_NEUTRAL;
  is_servo = true;
  do_servo_run = false;
  servo_run_counter = 0;
  servo_run_timer = 0;
  servo_run_step = (SERVO_SERVO_TEST_MAX - SERVO_SERVO_TEST_MIN) / 2 / steps;
 
  servo_mean = SERVO_SERVO_TEST_NEUTRAL;
 
}
 
 
void servo_tester_periodic()
{
 
  /*Go up and down with increasing amplitude*/
  if (do_servo_run && (servo_run_counter < steps)) {
    if (is_servo) {
      servo_test_val = servo_mean + servo_run_counter * servo_run_step * ((servo_run_counter % 2) * 2 - 1);
    } else if (servo_run_counter < steps / 2) {
      servo_test_val = servo_mean + servo_run_counter * servo_run_step * 2;
    } else {
      servo_test_val = servo_mean + abs(servo_run_counter - steps) * servo_run_step * 2;
    }
    servo_run_timer += 1;
 
    /*Give time to reach the setpoint*/
    if (servo_run_timer > (TIME_PER_DEFLECTION * SERVO_TESTER_PERIODIC_FREQ)) {
      servo_run_timer = 0;
      servo_run_counter += 1;
    }
  } else if (do_servo_run == true) {
    /*Reset de servo run*/
    do_servo_run = false;
    servo_run_counter = 0;
    servo_test_val = servo_mean;
  }
 
  Bound(servo_test_val, SERVO_SERVO_TEST_MIN, SERVO_SERVO_TEST_MAX);
  Set_SERVO_TEST_Servo(servo_test_val);
}