/*
 * Copyright (C) OpenTX
 *
 * Based on code named
 *   th9x - http://code.google.com/p/th9x 
 *   er9x - http://code.google.com/p/er9x
 *   gruvin9x - http://code.google.com/p/gruvin9x
 *
 * License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program 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.
 */

#include "trainer_input.h"

int16_t ppmInput[MAX_TRAINER_CHANNELS];
uint8_t ppmInputValidityTimer;


#include "audio.h"

void checkTrainerSignalWarning()
{
  enum PpmInValidState_t {
    PPM_IN_IS_NOT_USED=0,
    PPM_IN_IS_VALID,
    PPM_IN_INVALID
  };

  static uint8_t ppmInputValidState = PPM_IN_IS_NOT_USED;

  if (ppmInputValidityTimer && (ppmInputValidState == PPM_IN_IS_NOT_USED)) {
    ppmInputValidState = PPM_IN_IS_VALID;
  }
  else if (!ppmInputValidityTimer && (ppmInputValidState == PPM_IN_IS_VALID)) {
    ppmInputValidState = PPM_IN_INVALID;
    AUDIO_TRAINER_LOST();
  }
  else if (ppmInputValidityTimer && (ppmInputValidState == PPM_IN_INVALID)) {
    ppmInputValidState = PPM_IN_IS_VALID;
    AUDIO_TRAINER_BACK();
  }
}