/*
 * Copyright (C) EdgeTX
 *
 * Based on code named
 *   opentx - https://github.com/opentx/opentx
 *   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 "opentx.h"

extern void flysky_hall_stick_loop( void );

// Start TIMER at 2000000Hz
void init2MhzTimer()
{
  TIMER_2MHz_TIMER->PSC = (PERI1_FREQUENCY * TIMER_MULT_APB1) / 2000000 - 1; // 0.5 uS, 2 MHz
  TIMER_2MHz_TIMER->ARR = 65535;
  TIMER_2MHz_TIMER->CR2 = 0;
  TIMER_2MHz_TIMER->CR1 = TIM_CR1_CEN;
}

// Start TIMER at 1000Hz
void init1msTimer()
{
  INTERRUPT_xMS_TIMER->ARR = 999; // 1mS in uS
  INTERRUPT_xMS_TIMER->PSC = (PERI1_FREQUENCY * TIMER_MULT_APB1) / 1000000 - 1;  // 1uS
  INTERRUPT_xMS_TIMER->CCER = 0;
  INTERRUPT_xMS_TIMER->CCMR1 = 0;
  INTERRUPT_xMS_TIMER->EGR = 0;
  INTERRUPT_xMS_TIMER->CR1 = TIM_CR1_CEN | TIM_CR1_URS;
  INTERRUPT_xMS_TIMER->DIER |= TIM_DIER_UIE;
  NVIC_EnableIRQ(INTERRUPT_xMS_IRQn);
  NVIC_SetPriority(INTERRUPT_xMS_IRQn, 4);
}

void stop1msTimer()
{
  INTERRUPT_xMS_TIMER->CR1 = 0; // stop timer
  NVIC_DisableIRQ(INTERRUPT_xMS_IRQn);
}

static void interrupt1ms()
{
  static uint8_t pre_scale; // Used to get 10 Hz counter

  ++pre_scale;

  // 1 ms loop
#if not defined(SIMU) && (defined(RADIO_FAMILY_T16) || defined(PCBNV14))
  if (globalData.flyskygimbals)
  {
    flysky_hall_stick_loop();
  }
#endif

  // 5ms loop
  if (pre_scale == 5 || pre_scale == 10)
  {
#if defined(HAPTIC)
    DEBUG_TIMER_START(debugTimerHaptic);
    HAPTIC_HEARTBEAT();
    DEBUG_TIMER_STOP(debugTimerHaptic);
#endif
  }
  
  // 10ms loop
  if (pre_scale == 10)
	{
    pre_scale = 0;
    DEBUG_TIMER_START(debugTimerPer10ms);
    DEBUG_TIMER_SAMPLE(debugTimerPer10msPeriod);
    per10ms();
    DEBUG_TIMER_STOP(debugTimerPer10ms);
  }
}

extern "C" void INTERRUPT_xMS_IRQHandler()
{
  INTERRUPT_xMS_TIMER->SR &= ~TIM_SR_UIF;
  interrupt1ms();
  DEBUG_INTERRUPT(INT_1MS);
}