STM32F0xx Standard Peripherals Firmware Library: stm32f0xx_it.c Source File

00001 /**
00002   ******************************************************************************
00003   * @file    IWDG/IWDG_Reset/stm32f0xx_it.c 
00004   * @author  MCD Application Team
00005   * @version V1.4.0
00006   * @date    24-July-2014
00007   * @brief   Main Interrupt Service Routines.
00008   *          This file provides template for all exceptions handler and 
00009   *          peripherals interrupt service routine.
00010   ******************************************************************************
00011   * @attention
00012   *
00013   * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
00014   *
00015   * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
00016   * You may not use this file except in compliance with the License.
00017   * You may obtain a copy of the License at:
00018   *
00019   *        http://www.st.com/software_license_agreement_liberty_v2
00020   *
00021   * Unless required by applicable law or agreed to in writing, software 
00022   * distributed under the License is distributed on an "AS IS" BASIS, 
00023   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00024   * See the License for the specific language governing permissions and
00025   * limitations under the License.
00026   *
00027   ******************************************************************************
00028   */ 
00029 
00030 /* Includes ------------------------------------------------------------------*/
00031 #include "stm32f0xx_it.h"
00032 
00033 /** @addtogroup STM32F0xx_StdPeriph_Examples
00034   * @{
00035   */
00036 
00037 /* Private typedef -----------------------------------------------------------*/
00038 /* Private define ------------------------------------------------------------*/
00039 /* Private macro -------------------------------------------------------------*/
00040 /* Private variables ---------------------------------------------------------*/
00041 extern __IO uint32_t TimingDelay;
00042 __IO uint16_t IC1ReadValue1 = 0, IC1ReadValue2 = 0;
00043 __IO uint16_t CaptureNumber = 0;
00044 __IO uint32_t Capture = 0;
00045 extern uint32_t LsiFreq;
00046 /* Private function prototypes -----------------------------------------------*/
00047 /* Private functions ---------------------------------------------------------*/
00048 
00049 /******************************************************************************/
00050 /*            Cortex-M0 Processor Exceptions Handlers                         */
00051 /******************************************************************************/
00052 
00053 /**
00054   * @brief  This function handles NMI exception.
00055   * @param  None
00056   * @retval None
00057   */
00058 void NMI_Handler(void)
00059 {
00060 }
00061 
00062 /**
00063   * @brief  This function handles Hard Fault exception.
00064   * @param  None
00065   * @retval None
00066   */
00067 void HardFault_Handler(void)
00068 {
00069   /* Go to infinite loop when Hard Fault exception occurs */
00070   while (1)
00071   {
00072   }
00073 }
00074 
00075 /**
00076   * @brief  This function handles SVCall exception.
00077   * @param  None
00078   * @retval None
00079   */
00080 void SVC_Handler(void)
00081 {
00082 }
00083 
00084 /**
00085   * @brief  This function handles PendSVC exception.
00086   * @param  None
00087   * @retval None
00088   */
00089 void PendSV_Handler(void)
00090 {
00091 }
00092 
00093 /**
00094   * @brief  This function handles SysTick Handler.
00095   * @param  None
00096   * @retval None
00097   */
00098 void SysTick_Handler(void)
00099 {
00100   TimingDelay_Decrement();
00101 }
00102 
00103 /******************************************************************************/
00104 /*                 STM32F0xx Peripherals Interrupt Handlers                   */
00105 /*  Add here the Interrupt Handler for the used peripheral(s) (PPP), for the  */
00106 /*  available peripheral interrupt handler's name please refer to the startup */
00107 /*  file (startup_stm32f0xx.s).                                            */
00108 /******************************************************************************/
00109 /**
00110   * @brief  This function handles External line 4 to 15 interrupt request.
00111   * @param  None
00112   * @retval None
00113   */
00114 void EXTI4_15_IRQHandler(void)
00115 {
00116   if (EXTI_GetITStatus(TAMPER_BUTTON_EXTI_LINE) != RESET)
00117   {  
00118     /* Clear the TAMPER Button EXTI Line Pending Bit */
00119     EXTI_ClearITPendingBit(TAMPER_BUTTON_EXTI_LINE);
00120     
00121     /* As the following address is invalid (not mapped), a Hardfault exception
00122        will be generated with an infinite loop and when the IWDG counter reaches 0
00123        the IWDG reset occurs */
00124     *(__IO uint32_t *) 0x00040001 = 0xFF;
00125   }
00126 }
00127 
00128 #ifdef LSI_TIM_MEASURE
00129 /**
00130   * @brief  This function handles TIM14 global interrupt request.
00131   * @param  None
00132   * @retval None
00133   */
00134 void TIM14_IRQHandler(void)
00135 {
00136   if (TIM_GetITStatus(TIM14, TIM_IT_CC1) != RESET)
00137   {    
00138     if(CaptureNumber == 0)
00139     {
00140       /* Get the Input Capture value */
00141       IC1ReadValue1 = TIM_GetCapture1(TIM14);
00142     }
00143     else if(CaptureNumber == 1)
00144     {
00145       /* Get the Input Capture value */
00146       IC1ReadValue2 = TIM_GetCapture1(TIM14); 
00147       
00148       /* Capture computation */
00149       if (IC1ReadValue2 > IC1ReadValue1)
00150       {
00151         Capture = (IC1ReadValue2 - IC1ReadValue1); 
00152       }
00153       else
00154       {
00155         Capture = ((0xFFFF - IC1ReadValue1) + IC1ReadValue2); 
00156       }
00157       /* Frequency computation */ 
00158       LsiFreq = (uint32_t) SystemCoreClock / Capture;
00159       LsiFreq *= 8;
00160     }
00161     
00162     CaptureNumber++;
00163     
00164     /* Clear TIM14 Capture compare interrupt pending bit */
00165     TIM_ClearITPendingBit(TIM14, TIM_IT_CC1);
00166   }
00167 }
00168 #endif /* LSI_TIM_MEASURE */
00169 /**
00170   * @brief  This function handles PPP interrupt request.
00171   * @param  None
00172   * @retval None
00173   */
00174 /*void PPP_IRQHandler(void)
00175 {
00176 }*/
00177 
00178 /**
00179   * @}
00180   */ 
00181 
00182 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/