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Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303K8/hal_tick.c@632:7687fb9c4f91, 2015-09-28 (annotated)

Committer:
mbed_official
Date:
Mon Sep 28 14:00:11 2015 +0100
Revision:
632:7687fb9c4f91
Synchronized with git revision f7ce4ed029cc611121464252ff28d5e8beb895b0



Full URL: https://github.com/mbedmicro/mbed/commit/f7ce4ed029cc611121464252ff28d5e8beb895b0/



NUCLEO_F303K8 - add support of the STM32F303K8

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 632:7687fb9c4f91 1 /**
mbed_official 632:7687fb9c4f91 2 ******************************************************************************
mbed_official 632:7687fb9c4f91 3 * @file hal_tick.c
mbed_official 632:7687fb9c4f91 4 * @author MCD Application Team
mbed_official 632:7687fb9c4f91 5 * @brief Initialization of HAL tick
mbed_official 632:7687fb9c4f91 6 ******************************************************************************
mbed_official 632:7687fb9c4f91 7 * @attention
mbed_official 632:7687fb9c4f91 8 *
mbed_official 632:7687fb9c4f91 9 * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
mbed_official 632:7687fb9c4f91 10 *
mbed_official 632:7687fb9c4f91 11 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 632:7687fb9c4f91 12 * are permitted provided that the following conditions are met:
mbed_official 632:7687fb9c4f91 13 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 632:7687fb9c4f91 14 * this list of conditions and the following disclaimer.
mbed_official 632:7687fb9c4f91 15 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 632:7687fb9c4f91 16 * this list of conditions and the following disclaimer in the documentation
mbed_official 632:7687fb9c4f91 17 * and/or other materials provided with the distribution.
mbed_official 632:7687fb9c4f91 18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 632:7687fb9c4f91 19 * may be used to endorse or promote products derived from this software
mbed_official 632:7687fb9c4f91 20 * without specific prior written permission.
mbed_official 632:7687fb9c4f91 21 *
mbed_official 632:7687fb9c4f91 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 632:7687fb9c4f91 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 632:7687fb9c4f91 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 632:7687fb9c4f91 25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 632:7687fb9c4f91 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 632:7687fb9c4f91 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 632:7687fb9c4f91 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 632:7687fb9c4f91 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 632:7687fb9c4f91 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 632:7687fb9c4f91 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 632:7687fb9c4f91 32 *
mbed_official 632:7687fb9c4f91 33 ******************************************************************************
mbed_official 632:7687fb9c4f91 34 */
mbed_official 632:7687fb9c4f91 35 #include "hal_tick.h"
mbed_official 632:7687fb9c4f91 36
mbed_official 632:7687fb9c4f91 37 TIM_HandleTypeDef TimMasterHandle;
mbed_official 632:7687fb9c4f91 38 uint32_t PreviousVal = 0;
mbed_official 632:7687fb9c4f91 39
mbed_official 632:7687fb9c4f91 40 void us_ticker_irq_handler(void);
mbed_official 632:7687fb9c4f91 41
mbed_official 632:7687fb9c4f91 42 void timer_irq_handler(void) {
mbed_official 632:7687fb9c4f91 43 // Channel 1 for mbed timeout
mbed_official 632:7687fb9c4f91 44 if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC1) == SET) {
mbed_official 632:7687fb9c4f91 45 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
mbed_official 632:7687fb9c4f91 46 us_ticker_irq_handler();
mbed_official 632:7687fb9c4f91 47 }
mbed_official 632:7687fb9c4f91 48
mbed_official 632:7687fb9c4f91 49 // Channel 2 for HAL tick
mbed_official 632:7687fb9c4f91 50 if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC2) == SET) {
mbed_official 632:7687fb9c4f91 51 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 632:7687fb9c4f91 52 uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle);
mbed_official 632:7687fb9c4f91 53 if ((val - PreviousVal) >= HAL_TICK_DELAY) {
mbed_official 632:7687fb9c4f91 54 // Increment HAL variable
mbed_official 632:7687fb9c4f91 55 HAL_IncTick();
mbed_official 632:7687fb9c4f91 56 // Prepare next interrupt
mbed_official 632:7687fb9c4f91 57 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY);
mbed_official 632:7687fb9c4f91 58 PreviousVal = val;
mbed_official 632:7687fb9c4f91 59 #if 0 // For DEBUG only
mbed_official 632:7687fb9c4f91 60 HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6);
mbed_official 632:7687fb9c4f91 61 #endif
mbed_official 632:7687fb9c4f91 62 }
mbed_official 632:7687fb9c4f91 63 }
mbed_official 632:7687fb9c4f91 64 }
mbed_official 632:7687fb9c4f91 65
mbed_official 632:7687fb9c4f91 66 // Reconfigure the HAL tick using a standard timer instead of systick.
mbed_official 632:7687fb9c4f91 67 HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
mbed_official 632:7687fb9c4f91 68 // Enable timer clock
mbed_official 632:7687fb9c4f91 69 TIM_MST_RCC;
mbed_official 632:7687fb9c4f91 70
mbed_official 632:7687fb9c4f91 71 // Reset timer
mbed_official 632:7687fb9c4f91 72 TIM_MST_RESET_ON;
mbed_official 632:7687fb9c4f91 73 TIM_MST_RESET_OFF;
mbed_official 632:7687fb9c4f91 74
mbed_official 632:7687fb9c4f91 75 // Configure time base
mbed_official 632:7687fb9c4f91 76 TimMasterHandle.Instance = TIM_MST;
mbed_official 632:7687fb9c4f91 77 TimMasterHandle.Init.Period = 0xFFFFFFFF;
mbed_official 632:7687fb9c4f91 78 TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 us tick
mbed_official 632:7687fb9c4f91 79 TimMasterHandle.Init.ClockDivision = 0;
mbed_official 632:7687fb9c4f91 80 TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
mbed_official 632:7687fb9c4f91 81 TimMasterHandle.Init.RepetitionCounter = 0;
mbed_official 632:7687fb9c4f91 82 HAL_TIM_OC_Init(&TimMasterHandle);
mbed_official 632:7687fb9c4f91 83
mbed_official 632:7687fb9c4f91 84 NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler);
mbed_official 632:7687fb9c4f91 85 NVIC_EnableIRQ(TIM_MST_IRQ);
mbed_official 632:7687fb9c4f91 86
mbed_official 632:7687fb9c4f91 87 // Channel 1 for mbed timeout
mbed_official 632:7687fb9c4f91 88 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
mbed_official 632:7687fb9c4f91 89
mbed_official 632:7687fb9c4f91 90 // Channel 2 for HAL tick
mbed_official 632:7687fb9c4f91 91 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2);
mbed_official 632:7687fb9c4f91 92 PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle);
mbed_official 632:7687fb9c4f91 93 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY);
mbed_official 632:7687fb9c4f91 94 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 632:7687fb9c4f91 95
mbed_official 632:7687fb9c4f91 96 #if 0 // For DEBUG only
mbed_official 632:7687fb9c4f91 97 __GPIOB_CLK_ENABLE();
mbed_official 632:7687fb9c4f91 98 GPIO_InitTypeDef GPIO_InitStruct;
mbed_official 632:7687fb9c4f91 99 GPIO_InitStruct.Pin = GPIO_PIN_6;
mbed_official 632:7687fb9c4f91 100 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
mbed_official 632:7687fb9c4f91 101 GPIO_InitStruct.Pull = GPIO_PULLUP;
mbed_official 632:7687fb9c4f91 102 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
mbed_official 632:7687fb9c4f91 103 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
mbed_official 632:7687fb9c4f91 104 #endif
mbed_official 632:7687fb9c4f91 105
mbed_official 632:7687fb9c4f91 106 return HAL_OK;
mbed_official 632:7687fb9c4f91 107 }
mbed_official 632:7687fb9c4f91 108
mbed_official 632:7687fb9c4f91 109 /**
mbed_official 632:7687fb9c4f91 110 * @}
mbed_official 632:7687fb9c4f91 111 */
mbed_official 632:7687fb9c4f91 112
mbed_official 632:7687fb9c4f91 113 /**
mbed_official 632:7687fb9c4f91 114 * @}
mbed_official 632:7687fb9c4f91 115 */
mbed_official 632:7687fb9c4f91 116
mbed_official 632:7687fb9c4f91 117 /**
mbed_official 632:7687fb9c4f91 118 * @}
mbed_official 632:7687fb9c4f91 119 */
mbed_official 632:7687fb9c4f91 120 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/