text: /**
    ******************************************************************************
    * @file    stm32f4xx_it.c
    * @brief   Interrupt Service Routines.
    ******************************************************************************
    *
    * COPYRIGHT(c) 2018 STMicroelectronics
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *   1. Redistributions of source code must retain the above copyright notice,
    *      this list of conditions and the following disclaimer.
    *   2. Redistributions in binary form must reproduce the above copyright notice,
    *      this list of conditions and the following disclaimer in the documentation
    *      and/or other materials provided with the distribution.
    *   3. Neither the name of STMicroelectronics nor the names of its contributors
    *      may be used to endorse or promote products derived from this software
    *      without specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    ******************************************************************************
    */
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f4xx.h"
  #include "stm32f4xx_it.h"
  
  #include "cmsis_os.h"
  
  /******************************************************************************/
  /*            Cortex-M4 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) {
      while (1) {
          
      }
  }
  
  /**
   * \brief           This function handles Mem manage interrupt.
   */
  void
  MemManage_Handler(void) {
      while (1) {
          
      }
  }
  
  /**
   * \brief           This function handles Bus fault interrupt.
   */
  void
  BusFault_Handler(void) {
      while (1) {
          
      }
  }
  
  /**
   * \brief           This function handles Usage fault interrupt.
   */
  void
  UsageFault_Handler(void) {
      while (1) {
          
      }
  }
  
  /**
   * \brief           This function handles Debug monitor interrupt.
   */
  void
  DebugMon_Handler(void) {
      while (1) {
          
      }
  }
  
  /**
   * \brief           This function handles Systick interrupt.
   */
  void
  SysTick_Handler(void) {
      extern void xPortSysTickHandler(void);
      xPortSysTickHandler();
  }
  
  /******************************************************************************/
  /* STM32F4xx 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_stm32f4xx.s).                    */
  /******************************************************************************/
  