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125 lines
5.2 KiB
C
125 lines
5.2 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* Original template from ST Cube library. See below for header.
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/**
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******************************************************************************
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* @file Templates/Src/stm32f4xx_it.c
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* @author MCD Application Team
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* @version V1.0.1
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* @date 26-February-2014
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* @brief Main Interrupt Service Routines.
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* This file provides template for all exceptions handler and
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* peripherals interrupt service routine.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
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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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#include STM32_HAL_H
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#include "pendsv.h"
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#include "gccollect.h"
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#include "display.h"
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#include "common.h"
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#define IRQ_ENTER(irq)
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#define IRQ_EXIT(irq)
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/******************************************************************************/
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/* Cortex-M4 Processor Exceptions Handlers */
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/******************************************************************************/
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/**
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* @brief This function handles PendSVC exception.
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* @param None
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* @retval None
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*/
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void PendSV_Handler(void) {
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pendsv_isr_handler();
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}
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/**
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* @brief This function handles SysTick Handler.
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* @param None
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* @retval None
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*/
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void SysTick_Handler(void) {
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// Instead of calling HAL_IncTick we do the increment here of the counter.
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// This is purely for efficiency, since SysTick is called 1000 times per
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// second at the highest interrupt priority.
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// Note: we don't need uwTick to be declared volatile here because this is
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// the only place where it can be modified, and the code is more efficient
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// without the volatile specifier.
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extern uint32_t uwTick;
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uwTick += 1;
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// Read the systick control regster. This has the side effect of clearing
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// the COUNTFLAG bit, which makes the logic in sys_tick_get_microseconds
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// work properly.
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SysTick->CTRL;
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// Right now we have the storage and DMA controllers to process during
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// this interrupt and we use custom dispatch handlers. If this needs to
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// be generalised in the future then a dispatch table can be used as
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// follows: ((void(*)(void))(systick_dispatch[uwTick & 0xf]))();
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// if (STORAGE_IDLE_TICK(uwTick)) {
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// NVIC->STIR = FLASH_IRQn;
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// }
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// if (DMA_IDLE_ENABLED() && DMA_IDLE_TICK(uwTick)) {
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// dma_idle_handler(uwTick);
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// }
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}
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