/**
  ******************************************************************************
  * @file    stm32g0xx_it.c
  * @brief   Interrupt Service Routines.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32g0xx_it.h"

/* Private includes ----------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private user code ---------------------------------------------------------*/
/* External variables --------------------------------------------------------*/
extern volatile in15_pin_t SymbolIN15;

/******************************************************************************/
/*           Cortex-M0+ Processor Interruption and Exception Handlers          */
/******************************************************************************/
/**
  * @brief This function handles Non maskable interrupt.
  */
void NMI_Handler(void)
{
  while (1)
  {
  }
}

/**
  * @brief This function handles Hard fault interrupt.
  */
void HardFault_Handler(void)
{
  // tube power off
  TIM1->CCER &= ~(TIM_CCER_CC1E);
  TIM3->CCER &= ~(TIM_CCER_CC4E);
  TIM3->CCER &= ~(TIM_CCER_CC3E);
  TIM3->CCER &= ~(TIM_CCER_CC2E);
  TIM3->CCER &= ~(TIM_CCER_CC1E);
  GPIOA->BSRR = 0x10;
  // red led
  TIM1->CCR2 = 0xff; TIM1->CCR3 = 0; TIM1->CCR4 = 0;
  while (1)
  {
  }
}

/**
  * @brief This function handles System service call via SWI instruction.
  */
void SVC_Handler(void)
{
}

/**
  * @brief This function handles Pendable request for system service.
  */
void PendSV_Handler(void)
{
}

/******************************************************************************/
/* STM32G0xx Peripheral Interrupt Handlers                                    */
/* Add here the Interrupt Handlers for the used peripherals.                  */
/* For the available peripheral interrupt handler names,                      */
/* please refer to the startup file (startup_stm32g0xx.s).                    */
/******************************************************************************/

/**
  * @brief This function handles EXTI line 4 to 15 interrupts.
  */

void EXTI4_15_IRQHandler(void)
{
  if ((EXTI->FPR1 & EXTI_IMR1_IM14) != 0)
  {
    EXTI->FPR1 = EXTI_IMR1_IM14;
    Flag.RTC_IRQ = 1;
    ES_PlaceEvent(evNewSecond);
  }
}

/**
  * @brief This function handles DMA1 channel 1 interrupt.
  */
void DMA1_Channel1_IRQHandler(void)
{
  if ((DMA1->ISR & DMA_IFCR_CTCIF1) != 0) {
    DMA1->IFCR |= DMA_IFCR_CTCIF1; // reset IRQ flag

    Flag.SPI_TX_End = 1;

    /* Stop SPI-DMA transfer */
    DMA1_Channel1->CCR &= ~DMA_CCR_EN;

    /* Wait for end SPI transmit */
    LATCH_DOWN;
    while ((SPI1->SR & SPI_SR_FTLVL) != 0);
    while ((SPI1->SR & SPI_SR_BSY) != 0);
    LATCH_UP;
  }
}

/**
  * @brief This function handles DMA1 channel 2 and channel 3 interrupts.
  */
void DMA1_Channel2_3_IRQHandler(void)
{
  if ((DMA1->ISR & DMA_ISR_TCIF2) != 0) {
    /* reset IRQ flag */
    DMA1->IFCR |= DMA_IFCR_CTCIF2;
    /* Disable DMA channels for I2C RX */
    DMA1_Channel2->CCR &= ~DMA_CCR_EN;
    Flag.I2C_RX_End = 1;
  }
  if ((DMA1->ISR & DMA_ISR_TEIF2) != 0) {
    DMA1->IFCR |= DMA_IFCR_CTEIF2;
    DMA1_Channel2->CCR &= ~DMA_CCR_EN;
    Flag.I2C_RX_End = 1;
    Flag.I2C_RX_Err = 1;
  }

  if ((DMA1->ISR & DMA_ISR_TCIF3) != 0) {
    /* reset IRQ flag */
    DMA1->IFCR |= DMA_IFCR_CTCIF3;
    /* Disable DMA channels for I2C TX */
    DMA1_Channel3->CCR &= ~DMA_CCR_EN;
    Flag.I2C_TX_End = 1;
  }
  if ((DMA1->ISR & DMA_ISR_TEIF3) != 0) {
    DMA1->IFCR |= DMA_IFCR_CTEIF3;
    DMA1_Channel3->CCR &= ~DMA_CCR_EN;
    Flag.I2C_TX_End = 1;
    Flag.I2C_TX_Err = 1;
  }
}

/**
  * @brief This function handles TIM14 global interrupt.
  */
void TIM14_IRQHandler(void)
{
  if ((TIM14->SR & TIM_SR_UIF) != 0) {
    /* Update interrupt flag */
    TIM14->SR &= ~TIM_SR_UIF;

    /* enable channels */
    if (Flag.Blink_1 != 0) {
      TUBE_A_ON;
    }
    if (Flag.Blink_2 != 0) {
      TUBE_B_ON;
    }
    if (Flag.Blink_3 != 0) {
      TUBE_C_ON;
    }
    if (Flag.Blink_4 != 0) {
      TUBE_D_ON;
    }
    if (Flag.Blink_5 != 0) {
      TUBE_E_ON;
    }
  }
  if ((TIM14->SR & TIM_SR_CC1IF) != 0) {
    /* Capture/Compare Interrupt flag */
    TIM14->SR &= ~TIM_SR_CC1IF;

    /* disable unneeded channel */
    if (Flag.Blink_1 != 0) {
      TUBE_A_OFF;
    }
    if (Flag.Blink_2 != 0) {
      TUBE_B_OFF;
    }
    if (Flag.Blink_3 != 0) {
      TUBE_C_OFF;
    }
    if (Flag.Blink_4 != 0) {
      TUBE_D_OFF;
    }
    if (Flag.Blink_5 != 0) {
      TUBE_E_OFF;
    }
  }
}

/**
  * @brief This function handles TIM16 global interrupt.
  */
#define STOP_FADE_TIME  20
void TIM16_IRQHandler(void)
{
  static in15_pin_t sym_old = sym_Off;
  static uint8_t ph = 0;
  static uint8_t on = 0;
  static uint8_t cnt = 0;

  if ((TIM16->SR & TIM_SR_UIF) != 0) {
    /* Clear interrupt flag */
    TIM16->SR = 0;

    if (SymbolIN15 != sym_None) {
      if (cnt > 0) {
        cnt --;
      } else {

        if (ph == 0) {
          ph = 1;
          GPIOA->BSRR = SymbolIN15;
          if (on < STOP_FADE_TIME) {
            on += 2;
            cnt = on;
          } else {
            ph = 0; on = 0; cnt = 0;
            sym_old = SymbolIN15;
            SymbolIN15 = sym_None;
          }
        } else {
          ph = 0;
          GPIOA->BSRR = sym_old;
          cnt = STOP_FADE_TIME - on;
        }

      } /* cnt == 0 */
    } /* SymbolIN15 not empty */
  }
}

/**
  * @brief This function handles TIM17 global interrupt.
  */
void TIM17_IRQHandler(void)
{
  if ((TIM17->SR & TIM_SR_UIF) != 0) {
    /* Update interrupt flag */
    TIM17->SR = 0;
  }
}

/**
  * @brief This function handles SPI1 global interrupt.
  */
void SPI1_IRQHandler(void)
{
}

/**
  * @brief This function handles USART1 global interrupt / USART1 wake-up interrupt through EXTI line 25.
  */
void USART1_IRQHandler(void)
{
}

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/