/**
  ******************************************************************************
  * @file    Project/STM32F4xx_StdPeriph_Templates/stm32f4xx_it.c 
  * @author  MCD Application Team
  * @version V1.5.0
  * @date    06-March-2015
  * @brief   Main Interrupt Service Routines.
  *          This file provides template for all exceptions handler and 
  *          peripherals interrupt service routine.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_it.h"
//#include "usart.h"


/* Scheduler includes */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "semphr.h"

extern SemaphoreHandle_t s_xSemaphore;

/* We can use Web only with libc stdio (PRINTF=stdlib) */
#include "stm32f4x7_eth.h"
/* lwip includes */
#include "lwip/sys.h"


#ifdef PRINTF_STDLIB
#include <stdio.h>
#endif
#ifdef PRINTF_CUSTOM
#include "tinystdio.h"
#endif



/** @addtogroup Template_Project
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/


/******************************************************************************/
/*            Cortex-M4 Processor Exceptions Handlers                         */
/******************************************************************************/

/**
  * @brief  This function handles NMI exception.
  * @param  None
  * @retval None
  */
void NMI_Handler(void)
{
}

void **HARDFAULT_PSP;
register void *stack_pointer asm("sp");

void HardFault_Output(uint32_t *sp)
{
    // Hijack the process stack pointer to make backtrace work
    asm("mrs %0, psp" : "=r"(HARDFAULT_PSP) : :);
    stack_pointer = HARDFAULT_PSP;

    // call our debugger
    asm("bkpt #0");

    uint32_t r0  = sp[0];
    uint32_t r1  = sp[1];
    uint32_t r2  = sp[2];
    uint32_t r3  = sp[3];
    uint32_t r12 = sp[4];
    uint32_t lr  = sp[5];
    uint32_t pc  = sp[6];
    uint32_t psr = sp[7];

    printf("HardFault:\n\r");
    /* Print CFSR register */

    /* Print CPU registers */
    printf("\n\rRegisters:\n\r");
    printf("SP          0x%08lx\n\r", (uint32_t)sp);
    printf("R0          0x%08lx\n\r", r0);
    printf("R1          0x%08lx\n\r", r1);
    printf("R2          0x%08lx\n\r", r2);
    printf("R3          0x%08lx\n\r", r3);
    printf("R12         0x%08lx\n\r", r12);
    printf("LR          0x%08lx\n\r", lr);
    printf("PC          0x%08lx\n\r", pc);
    printf("PSR         0x%08lx\n\r", psr);

    /* Go to infinite loop when Hard Fault exception occurs */
    while(1);
}

/**
  * @brief  This function handles Hard Fault exception.
  * @param  None
  * @retval None
  */
#if defined ( __GNUC__ ) 
__attribute__( (naked) )
void HardFault_Handler(void)
{
__asm volatile
    (
        "tst lr, #4                                    \n"
        "ite eq                                        \n"
        "mrseq r0, msp                                 \n"
        "mrsne r0, psp                                 \n"
        "ldr r1, debugHardfault_address                \n"
        "bx r1                                         \n"
        "debugHardfault_address: .word HardFault_Output  \n"
    );
}
#endif

/**
  * @brief  This function handles Memory Manage exception.
  * @param  None
  * @retval None
  */
void MemManage_Handler(void)
{
  /* Go to infinite loop when Memory Manage exception occurs */
  while (1)
  {
  }
}

/*void TIM8_UP_TIM13_IRQHandler(void)
{
	TIM_ClearITPendingBit(TIM13, TIM_IT_Update);
}*/

/**
  * @brief  This function handles Bus Fault exception.
  * @param  None
  * @retval None
  */
void BusFault_Handler(void)
{
  /* Go to infinite loop when Bus Fault exception occurs */
  while (1)
  {
  }
}

/**
  * @brief  This function handles Usage Fault exception.
  * @param  None
  * @retval None
  */
void UsageFault_Handler(void)
{
  /* Go to infinite loop when Usage Fault exception occurs */
  while (1)
  {
  }
}

/**
  * @brief  This function handles SVCall exception.
  * @param  None
  * @retval None
  */
/*
void SVC_Handler(void)
{
}
*/

/**
  * @brief  This function handles Debug Monitor exception.
  * @param  None
  * @retval None
  */
void DebugMon_Handler(void)
{
}

/**
  * @brief  This function handles PendSVC exception.
  * @param  None
  * @retval None
  */
/*void PendSV_Handler(void)
{
}
*/
/**
  * @brief  This function handles SysTick Handler.
  * @param  None
  * @retval None
  */
/*void SysTick_Handler(void)
{
  TimingDelay_Decrement();
}
*/

/******************************************************************************/
/*                 STM32F4xx Peripherals Interrupt Handlers                   */
/*  Add here the Interrupt Handler for the used peripheral(s) (PPP), for the  */
/*  available peripheral interrupt handler's name please refer to the startup */
/*  file (startup_stm32f4xx.s).                                               */
/******************************************************************************/

/**
  * @brief  This function handles PPP interrupt request.
  * @param  None
  * @retval None
  */
/*void PPP_IRQHandler(void)
{
}*/

void SDIO_IRQHandler(void)
{
  /* Process All SDIO Interrupt Sources */
 // SD_ProcessIRQSrc();
}

/**
  * @brief  This function handles DMA2 Stream3 or DMA2 Stream6 global interrupts
  *         requests.
  * @param  None
  * @retval None
  */
void SD_SDIO_DMA_IRQHANDLER(void)
{
  /* Process DMA2 Stream3 or DMA2 Stream6 Interrupt Sources */
//  SD_ProcessDMAIRQ();
}

//#ifdef OS_FREERTOS
/**
  * @brief  This function handles ethernet DMA interrupt request.
  * @param  None
  * @retval None
  */
void ETH_IRQHandler(void)
{
  portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;

  /* Frame received */
  if ( ETH_GetDMAFlagStatus(ETH_DMA_FLAG_R) == SET)
  {
    /* Give the semaphore to wakeup LwIP task */
    xSemaphoreGiveFromISR( s_xSemaphore, &xHigherPriorityTaskWoken );
  }

  /* Clear the interrupt flags. */
  /* Clear the Eth DMA Rx IT pending bits */
  ETH_DMAClearITPendingBit(ETH_DMA_IT_R);
  ETH_DMAClearITPendingBit(ETH_DMA_IT_NIS);

  // Switch tasks if necessary. */
  if( xHigherPriorityTaskWoken != pdFALSE )
  {
    portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
  }
}

//#endif
//#endif

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