interrupt.c

#include "main.h"

__IO uint8_t PauseResumeStatus = 2, Count = 0, LED_Toggle = 0;
uint16_t capture = 0;
extern __IO uint16_t CCR_Val;
extern __IO uint8_t RepeatState, AudioPlayStart;
extern uint8_t Buffer[];

#if defined MEDIA_USB_KEY
__IO uint16_t Time_Rec_Base = 0;
 extern USB_OTG_CORE_HANDLE          USB_OTG_Core;
 extern USBH_HOST                    USB_Host;
 extern FIL file;
 extern __IO uint8_t Data_Status;
 extern __IO uint32_t XferCplt ;
 extern __IO uint8_t Command_index;
#endif /* MEDIA_USB_KEY */

void NMI_Handler(void)
{
}

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

/**
  * @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 BusFault_Handler(void)
{
  /* Go to infinite loop when Bus Fault exception occurs */
  while (1)
  {
  }
}

void UsageFault_Handler(void)
{
  /* Go to infinite loop when Usage Fault exception occurs */
  while (1)
  {
  }
}

void SVC_Handler(void)
{
}

void DebugMon_Handler(void)
{
}

void PendSV_Handler(void)
{
}

void SysTick_Handler(void)
{
  TimingDelay_Decrement();
#if defined MEDIA_USB_KEY
  if ( Command_index == 1)
  {
    Time_Rec_Base ++;
  }
#endif
}

void EXTI1_IRQHandler(void)
{
  /* Check the clic on the accelerometer to Pause/Resume Playing */
  if(EXTI_GetITStatus(EXTI_Line1) != RESET)
  {
    if( Count==1)
    {
      PauseResumeStatus = 1;
      Count = 0;
    }
    else
    {
      PauseResumeStatus = 0;
      Count = 1;
    }
    /* Clear the EXTI line 1 pending bit */
    EXTI_ClearITPendingBit(EXTI_Line1);
  }
}

void TIM4_IRQHandler(void)
{
   uint8_t clickreg = 0;

  if (AudioPlayStart != 0x00)
  {
    /* Read click status register */
    LIS302DL_Read(&clickreg, LIS302DL_CLICK_SRC_REG_ADDR, 1); 
    LIS302DL_Read(Buffer, LIS302DL_STATUS_REG_ADDR, 6);
  }
  
  /* Checks whether the TIM interrupt has occurred */
  if (TIM_GetITStatus(TIM4, TIM_IT_CC1) != RESET)
  {
    TIM_ClearITPendingBit(TIM4, TIM_IT_CC1);
    if( LED_Toggle == 3)
    {
      /* LED3 Orange toggling */
      STM_EVAL_LEDToggle(LED3);
      STM_EVAL_LEDOff(LED6);
      STM_EVAL_LEDOff(LED4);
    }
    else if( LED_Toggle == 4)
    {
      /* LED4 Green toggling */
      STM_EVAL_LEDToggle(LED4);
      STM_EVAL_LEDOff(LED6);
      STM_EVAL_LEDOff(LED3);
    }
    else if( LED_Toggle == 6)
    {
      /* LED6 Blue toggling */
      STM_EVAL_LEDOff(LED3);
      STM_EVAL_LEDOff(LED4);
      STM_EVAL_LEDToggle(LED6);
    }
    else if (LED_Toggle ==0)
    {
      /* LED6 Blue On to signal Pause */
      STM_EVAL_LEDOn(LED6);
    }
    else if (LED_Toggle == 7)
    {
      /* LED4 toggling with frequency = 439.4 Hz */
      STM_EVAL_LEDOff(LED3);
      STM_EVAL_LEDOff(LED4);
      STM_EVAL_LEDOff(LED5);
      STM_EVAL_LEDOff(LED6);
    }
    capture = TIM_GetCapture1(TIM4);
    TIM_SetCompare1(TIM4, capture + CCR_Val);
  }
}

#if defined MEDIA_USB_KEY

void EXTI0_IRQHandler(void)
{
  /* Checks whether the User Button EXTI line is asserted*/
  if (EXTI_GetITStatus(EXTI_Line0) != RESET) 
  { 
    if (Command_index == 1)
    {
      RepeatState = 0;
      /* Switch to play command */
      Command_index = 0;
    }
    else if (Command_index == 0)
    {
      /* Switch to record command */
      Command_index = 1;
      XferCplt = 1;
      EVAL_AUDIO_Stop(CODEC_PDWN_SW);
    }
    else
    {
      RepeatState = 0;
      /* Switch to play command */
      Command_index = 0; 
    }
  } 
  /* Clears the EXTI's line pending bit.*/ 
  EXTI_ClearITPendingBit(EXTI_Line0);
}

void TIM2_IRQHandler(void)
{
  USB_OTG_BSP_TimerIRQ();
}

void OTG_FS_IRQHandler(void)
{
  USBH_OTG_ISR_Handler(&USB_OTG_Core);
}
#endif /* MEDIA_USB_KEY */