mbed library sources
Fork of mbed-src by
Diff: targets/cmsis/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303K8/hal_tick.c
- Revision:
- 634:ac7d6880524d
- Parent:
- 633:188f3ef4d258
- Child:
- 635:a11c0372f0ba
--- a/targets/cmsis/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303K8/hal_tick.c Mon Sep 28 15:00:09 2015 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,120 +0,0 @@ -/** - ****************************************************************************** - * @file hal_tick.c - * @author MCD Application Team - * @brief Initialization of HAL tick - ****************************************************************************** - * @attention - * - * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> - * - * 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. - * - ****************************************************************************** - */ -#include "hal_tick.h" - -TIM_HandleTypeDef TimMasterHandle; -uint32_t PreviousVal = 0; - -void us_ticker_irq_handler(void); - -void timer_irq_handler(void) { - // Channel 1 for mbed timeout - if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC1) == SET) { - __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1); - us_ticker_irq_handler(); - } - - // Channel 2 for HAL tick - if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC2) == SET) { - __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2); - uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle); - if ((val - PreviousVal) >= HAL_TICK_DELAY) { - // Increment HAL variable - HAL_IncTick(); - // Prepare next interrupt - __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY); - PreviousVal = val; -#if 0 // For DEBUG only - HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6); -#endif - } - } -} - -// Reconfigure the HAL tick using a standard timer instead of systick. -HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) { - // Enable timer clock - TIM_MST_RCC; - - // Reset timer - TIM_MST_RESET_ON; - TIM_MST_RESET_OFF; - - // Configure time base - TimMasterHandle.Instance = TIM_MST; - TimMasterHandle.Init.Period = 0xFFFFFFFF; - TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 us tick - TimMasterHandle.Init.ClockDivision = 0; - TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP; - TimMasterHandle.Init.RepetitionCounter = 0; - HAL_TIM_OC_Init(&TimMasterHandle); - - NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler); - NVIC_EnableIRQ(TIM_MST_IRQ); - - // Channel 1 for mbed timeout - HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1); - - // Channel 2 for HAL tick - HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2); - PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle); - __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY); - __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2); - -#if 0 // For DEBUG only - __GPIOB_CLK_ENABLE(); - GPIO_InitTypeDef GPIO_InitStruct; - GPIO_InitStruct.Pin = GPIO_PIN_6; - GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; - GPIO_InitStruct.Pull = GPIO_PULLUP; - GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; - HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); -#endif - - return HAL_OK; -} - -/** - * @} - */ - -/** - * @} - */ - -/** - * @} - */ -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/