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118 lines
4.1 KiB
118 lines
4.1 KiB
/**
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******************************************************************************
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* @file stm32f4xx_it.c
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* @brief Interrupt Service Routines.
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******************************************************************************
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*
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* COPYRIGHT(c) 2015 STMicroelectronics
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*
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* Modifications by Robert Fisk
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f4xx_hal.h"
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#include "stm32f4xx.h"
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#include "interrupts.h"
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#include "led.h"
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#include "board_config.h"
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/* External variables --------------------------------------------------------*/
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extern HCD_HandleTypeDef hhcd_USB_OTG_FS;
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extern DMA_HandleTypeDef hdma_spi1_rx;
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extern DMA_HandleTypeDef hdma_spi1_tx;
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extern volatile uint8_t UsbInterruptHasHappened;
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uint8_t BusFaultAllowed = 0;
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/******************************************************************************/
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/* Cortex-M4 Processor Interruption and Exception Handlers */
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/******************************************************************************/
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/**
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* @brief This function handles System tick timer.
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*/
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void SysTick_Handler(void)
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{
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HAL_IncTick();
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LED_Tick();
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}
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/******************************************************************************/
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/* STM32F4xx Peripheral Interrupt Handlers */
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/* Add here the Interrupt Handlers for the used peripherals. */
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/* For the available peripheral interrupt handler names, */
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/* please refer to the startup file (startup_stm32f4xx.s). */
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/******************************************************************************/
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void DMA2_Stream2_IRQHandler(void)
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{
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HAL_DMA_IRQHandler(&hdma_spi1_rx);
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}
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void DMA2_Stream3_IRQHandler(void)
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{
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HAL_DMA_IRQHandler(&hdma_spi1_tx);
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}
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void OTG_FS_IRQHandler(void)
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{
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HAL_HCD_IRQHandler(&hhcd_USB_OTG_FS);
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UsbInterruptHasHappened = 1;
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}
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//This weird stuff is required when disabling flash writes.
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//The deliberate flash lockout will cause a bus fault that we need to process.
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void EnableOneBusFault(void)
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{
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//It should not be enabled already!
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if (BusFaultAllowed)
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{
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while (1);
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}
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SCB->SHCSR = SCB_SHCSR_BUSFAULTENA_Msk;
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BusFaultAllowed = 1;
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}
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void BusFault_Handler(void)
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{
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if (BusFaultAllowed)
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{
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BusFaultAllowed = 0;
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return;
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}
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while (1);
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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