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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_F401RE/hal_tick.c@226:b062af740e40, 2014-06-11 (annotated)

Committer:
mbed_official
Date:
Wed Jun 11 09:45:09 2014 +0100
Revision:
226:b062af740e40
Child:
369:2e96f1b71984
Synchronized with git revision 42deb9ac55f9bdf9835e9c41dc757117d344ffda



Full URL: https://github.com/mbedmicro/mbed/commit/42deb9ac55f9bdf9835e9c41dc757117d344ffda/



[NUCLEO_F401RE] Remove call to Systick + bug fixes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 226:b062af740e40 1 /**
mbed_official 226:b062af740e40 2 ******************************************************************************
mbed_official 226:b062af740e40 3 * @file hal_tick.c
mbed_official 226:b062af740e40 4 * @author MCD Application Team
mbed_official 226:b062af740e40 5 * @brief Initialization of HAL tick
mbed_official 226:b062af740e40 6 ******************************************************************************
mbed_official 226:b062af740e40 7 * @attention
mbed_official 226:b062af740e40 8 *
mbed_official 226:b062af740e40 9 * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
mbed_official 226:b062af740e40 10 *
mbed_official 226:b062af740e40 11 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 226:b062af740e40 12 * are permitted provided that the following conditions are met:
mbed_official 226:b062af740e40 13 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 226:b062af740e40 14 * this list of conditions and the following disclaimer.
mbed_official 226:b062af740e40 15 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 226:b062af740e40 16 * this list of conditions and the following disclaimer in the documentation
mbed_official 226:b062af740e40 17 * and/or other materials provided with the distribution.
mbed_official 226:b062af740e40 18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 226:b062af740e40 19 * may be used to endorse or promote products derived from this software
mbed_official 226:b062af740e40 20 * without specific prior written permission.
mbed_official 226:b062af740e40 21 *
mbed_official 226:b062af740e40 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 226:b062af740e40 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 226:b062af740e40 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 226:b062af740e40 25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 226:b062af740e40 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 226:b062af740e40 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 226:b062af740e40 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 226:b062af740e40 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 226:b062af740e40 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 226:b062af740e40 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 226:b062af740e40 32 *
mbed_official 226:b062af740e40 33 ******************************************************************************
mbed_official 226:b062af740e40 34 */
mbed_official 226:b062af740e40 35 #include "hal_tick.h"
mbed_official 226:b062af740e40 36
mbed_official 226:b062af740e40 37 TIM_HandleTypeDef TimMasterHandle;
mbed_official 226:b062af740e40 38 uint32_t PreviousVal = 0;
mbed_official 226:b062af740e40 39
mbed_official 226:b062af740e40 40 void us_ticker_irq_handler(void);
mbed_official 226:b062af740e40 41
mbed_official 226:b062af740e40 42 void timer_irq_handler(void) {
mbed_official 226:b062af740e40 43 // Channel 1 for mbed timeout
mbed_official 226:b062af740e40 44 if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC1) == SET) {
mbed_official 226:b062af740e40 45 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
mbed_official 226:b062af740e40 46 us_ticker_irq_handler();
mbed_official 226:b062af740e40 47 }
mbed_official 226:b062af740e40 48
mbed_official 226:b062af740e40 49 // Channel 2 for HAL tick
mbed_official 226:b062af740e40 50 if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC2) == SET) {
mbed_official 226:b062af740e40 51 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 226:b062af740e40 52 uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle);
mbed_official 226:b062af740e40 53 if ((val - PreviousVal) >= HAL_TICK_DELAY) {
mbed_official 226:b062af740e40 54 // Increment HAL variable
mbed_official 226:b062af740e40 55 HAL_IncTick();
mbed_official 226:b062af740e40 56 // Prepare next interrupt
mbed_official 226:b062af740e40 57 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY);
mbed_official 226:b062af740e40 58 PreviousVal = val;
mbed_official 226:b062af740e40 59 #if 0 // For DEBUG only
mbed_official 226:b062af740e40 60 HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6);
mbed_official 226:b062af740e40 61 #endif
mbed_official 226:b062af740e40 62 }
mbed_official 226:b062af740e40 63 }
mbed_official 226:b062af740e40 64 }
mbed_official 226:b062af740e40 65
mbed_official 226:b062af740e40 66 // Reconfigure the HAL tick using a standard timer instead of systick.
mbed_official 226:b062af740e40 67 HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
mbed_official 226:b062af740e40 68 // Enable timer clock
mbed_official 226:b062af740e40 69 TIM_MST_RCC;
mbed_official 226:b062af740e40 70
mbed_official 226:b062af740e40 71 // Reset timer
mbed_official 226:b062af740e40 72 TIM_MST_RESET_ON;
mbed_official 226:b062af740e40 73 TIM_MST_RESET_OFF;
mbed_official 226:b062af740e40 74
mbed_official 226:b062af740e40 75 // Configure time base
mbed_official 226:b062af740e40 76 TimMasterHandle.Instance = TIM_MST;
mbed_official 226:b062af740e40 77 TimMasterHandle.Init.Period = 0xFFFFFFFF;
mbed_official 226:b062af740e40 78 TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 226:b062af740e40 79 TimMasterHandle.Init.ClockDivision = 0;
mbed_official 226:b062af740e40 80 TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
mbed_official 226:b062af740e40 81 TimMasterHandle.Init.RepetitionCounter = 0;
mbed_official 226:b062af740e40 82 HAL_TIM_OC_Init(&TimMasterHandle);
mbed_official 226:b062af740e40 83
mbed_official 226:b062af740e40 84 NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler);
mbed_official 226:b062af740e40 85 NVIC_EnableIRQ(TIM_MST_IRQ);
mbed_official 226:b062af740e40 86
mbed_official 226:b062af740e40 87 // Channel 1 for mbed timeout
mbed_official 226:b062af740e40 88 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
mbed_official 226:b062af740e40 89
mbed_official 226:b062af740e40 90 // Channel 2 for HAL tick
mbed_official 226:b062af740e40 91 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2);
mbed_official 226:b062af740e40 92 PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle);
mbed_official 226:b062af740e40 93 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY);
mbed_official 226:b062af740e40 94 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 226:b062af740e40 95
mbed_official 226:b062af740e40 96 #if 0 // For DEBUG only
mbed_official 226:b062af740e40 97 __GPIOB_CLK_ENABLE();
mbed_official 226:b062af740e40 98 GPIO_InitTypeDef GPIO_InitStruct;
mbed_official 226:b062af740e40 99 GPIO_InitStruct.Pin = GPIO_PIN_6;
mbed_official 226:b062af740e40 100 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
mbed_official 226:b062af740e40 101 GPIO_InitStruct.Pull = GPIO_PULLUP;
mbed_official 226:b062af740e40 102 GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
mbed_official 226:b062af740e40 103 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
mbed_official 226:b062af740e40 104 #endif
mbed_official 226:b062af740e40 105
mbed_official 226:b062af740e40 106 return HAL_OK;
mbed_official 226:b062af740e40 107 }
mbed_official 226:b062af740e40 108
mbed_official 226:b062af740e40 109 /**
mbed_official 226:b062af740e40 110 * @}
mbed_official 226:b062af740e40 111 */
mbed_official 226:b062af740e40 112
mbed_official 226:b062af740e40 113 /**
mbed_official 226:b062af740e40 114 * @}
mbed_official 226:b062af740e40 115 */
mbed_official 226:b062af740e40 116
mbed_official 226:b062af740e40 117 /**
mbed_official 226:b062af740e40 118 * @}
mbed_official 226:b062af740e40 119 */
mbed_official 226:b062af740e40 120 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/