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Last commit 20 Feb 2019 by 
mbed official
targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_ELMO_F411RE/hal_tick.c@625:6502bcae5f2c, 2015-09-25 (annotated)
- Committer:
- mbed_official
- Date:
- Fri Sep 25 12:00:11 2015 +0100
- Revision:
- 625:6502bcae5f2c
Synchronized with git revision 724c07935c2d3e3d8a1b3e7274b29ba5dcbed7ad
Full URL: https://github.com/mbedmicro/mbed/commit/724c07935c2d3e3d8a1b3e7274b29ba5dcbed7ad/
Changes contains only "Copyright year information" and "KR styling". Safe to merge.
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 625:6502bcae5f2c | 1 | /** |
| mbed_official | 625:6502bcae5f2c | 2 | ****************************************************************************** |
| mbed_official | 625:6502bcae5f2c | 3 | * @file hal_tick.c |
| mbed_official | 625:6502bcae5f2c | 4 | * @author MCD Application Team |
| mbed_official | 625:6502bcae5f2c | 5 | * @brief Initialization of HAL tick |
| mbed_official | 625:6502bcae5f2c | 6 | ****************************************************************************** |
| mbed_official | 625:6502bcae5f2c | 7 | * @attention |
| mbed_official | 625:6502bcae5f2c | 8 | * |
| mbed_official | 625:6502bcae5f2c | 9 | * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> |
| mbed_official | 625:6502bcae5f2c | 10 | * |
| mbed_official | 625:6502bcae5f2c | 11 | * Redistribution and use in source and binary forms, with or without modification, |
| mbed_official | 625:6502bcae5f2c | 12 | * are permitted provided that the following conditions are met: |
| mbed_official | 625:6502bcae5f2c | 13 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 625:6502bcae5f2c | 14 | * this list of conditions and the following disclaimer. |
| mbed_official | 625:6502bcae5f2c | 15 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 625:6502bcae5f2c | 16 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 625:6502bcae5f2c | 17 | * and/or other materials provided with the distribution. |
| mbed_official | 625:6502bcae5f2c | 18 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| mbed_official | 625:6502bcae5f2c | 19 | * may be used to endorse or promote products derived from this software |
| mbed_official | 625:6502bcae5f2c | 20 | * without specific prior written permission. |
| mbed_official | 625:6502bcae5f2c | 21 | * |
| mbed_official | 625:6502bcae5f2c | 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| mbed_official | 625:6502bcae5f2c | 23 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| mbed_official | 625:6502bcae5f2c | 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| mbed_official | 625:6502bcae5f2c | 25 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| mbed_official | 625:6502bcae5f2c | 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 625:6502bcae5f2c | 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| mbed_official | 625:6502bcae5f2c | 28 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| mbed_official | 625:6502bcae5f2c | 29 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| mbed_official | 625:6502bcae5f2c | 30 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| mbed_official | 625:6502bcae5f2c | 31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 625:6502bcae5f2c | 32 | * |
| mbed_official | 625:6502bcae5f2c | 33 | ****************************************************************************** |
| mbed_official | 625:6502bcae5f2c | 34 | */ |
| mbed_official | 625:6502bcae5f2c | 35 | #include "hal_tick.h" |
| mbed_official | 625:6502bcae5f2c | 36 | |
| mbed_official | 625:6502bcae5f2c | 37 | TIM_HandleTypeDef TimMasterHandle; |
| mbed_official | 625:6502bcae5f2c | 38 | uint32_t PreviousVal = 0; |
| mbed_official | 625:6502bcae5f2c | 39 | |
| mbed_official | 625:6502bcae5f2c | 40 | void us_ticker_irq_handler(void); |
| mbed_official | 625:6502bcae5f2c | 41 | |
| mbed_official | 625:6502bcae5f2c | 42 | void timer_irq_handler(void) { |
| mbed_official | 625:6502bcae5f2c | 43 | // Channel 1 for mbed timeout |
| mbed_official | 625:6502bcae5f2c | 44 | if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC1) == SET) { |
| mbed_official | 625:6502bcae5f2c | 45 | us_ticker_irq_handler(); |
| mbed_official | 625:6502bcae5f2c | 46 | } |
| mbed_official | 625:6502bcae5f2c | 47 | |
| mbed_official | 625:6502bcae5f2c | 48 | // Channel 2 for HAL tick |
| mbed_official | 625:6502bcae5f2c | 49 | if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC2) == SET) { |
| mbed_official | 625:6502bcae5f2c | 50 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2); |
| mbed_official | 625:6502bcae5f2c | 51 | uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle); |
| mbed_official | 625:6502bcae5f2c | 52 | if ((val - PreviousVal) >= HAL_TICK_DELAY) { |
| mbed_official | 625:6502bcae5f2c | 53 | // Increment HAL variable |
| mbed_official | 625:6502bcae5f2c | 54 | HAL_IncTick(); |
| mbed_official | 625:6502bcae5f2c | 55 | // Prepare next interrupt |
| mbed_official | 625:6502bcae5f2c | 56 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY); |
| mbed_official | 625:6502bcae5f2c | 57 | PreviousVal = val; |
| mbed_official | 625:6502bcae5f2c | 58 | #if 0 // For DEBUG only |
| mbed_official | 625:6502bcae5f2c | 59 | HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6); |
| mbed_official | 625:6502bcae5f2c | 60 | #endif |
| mbed_official | 625:6502bcae5f2c | 61 | } |
| mbed_official | 625:6502bcae5f2c | 62 | } |
| mbed_official | 625:6502bcae5f2c | 63 | } |
| mbed_official | 625:6502bcae5f2c | 64 | |
| mbed_official | 625:6502bcae5f2c | 65 | // Reconfigure the HAL tick using a standard timer instead of systick. |
| mbed_official | 625:6502bcae5f2c | 66 | HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) { |
| mbed_official | 625:6502bcae5f2c | 67 | // Enable timer clock |
| mbed_official | 625:6502bcae5f2c | 68 | TIM_MST_RCC; |
| mbed_official | 625:6502bcae5f2c | 69 | |
| mbed_official | 625:6502bcae5f2c | 70 | // Reset timer |
| mbed_official | 625:6502bcae5f2c | 71 | TIM_MST_RESET_ON; |
| mbed_official | 625:6502bcae5f2c | 72 | TIM_MST_RESET_OFF; |
| mbed_official | 625:6502bcae5f2c | 73 | |
| mbed_official | 625:6502bcae5f2c | 74 | // Update the SystemCoreClock variable |
| mbed_official | 625:6502bcae5f2c | 75 | SystemCoreClockUpdate(); |
| mbed_official | 625:6502bcae5f2c | 76 | |
| mbed_official | 625:6502bcae5f2c | 77 | // Configure time base |
| mbed_official | 625:6502bcae5f2c | 78 | TimMasterHandle.Instance = TIM_MST; |
| mbed_official | 625:6502bcae5f2c | 79 | TimMasterHandle.Init.Period = 0xFFFFFFFF; |
| mbed_official | 625:6502bcae5f2c | 80 | TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick |
| mbed_official | 625:6502bcae5f2c | 81 | TimMasterHandle.Init.ClockDivision = 0; |
| mbed_official | 625:6502bcae5f2c | 82 | TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP; |
| mbed_official | 625:6502bcae5f2c | 83 | TimMasterHandle.Init.RepetitionCounter = 0; |
| mbed_official | 625:6502bcae5f2c | 84 | HAL_TIM_OC_Init(&TimMasterHandle); |
| mbed_official | 625:6502bcae5f2c | 85 | |
| mbed_official | 625:6502bcae5f2c | 86 | NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler); |
| mbed_official | 625:6502bcae5f2c | 87 | NVIC_EnableIRQ(TIM_MST_IRQ); |
| mbed_official | 625:6502bcae5f2c | 88 | |
| mbed_official | 625:6502bcae5f2c | 89 | // Channel 1 for mbed timeout |
| mbed_official | 625:6502bcae5f2c | 90 | HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1); |
| mbed_official | 625:6502bcae5f2c | 91 | |
| mbed_official | 625:6502bcae5f2c | 92 | // Channel 2 for HAL tick |
| mbed_official | 625:6502bcae5f2c | 93 | HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2); |
| mbed_official | 625:6502bcae5f2c | 94 | PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle); |
| mbed_official | 625:6502bcae5f2c | 95 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY); |
| mbed_official | 625:6502bcae5f2c | 96 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2); |
| mbed_official | 625:6502bcae5f2c | 97 | |
| mbed_official | 625:6502bcae5f2c | 98 | #if 0 // For DEBUG only |
| mbed_official | 625:6502bcae5f2c | 99 | __GPIOB_CLK_ENABLE(); |
| mbed_official | 625:6502bcae5f2c | 100 | GPIO_InitTypeDef GPIO_InitStruct; |
| mbed_official | 625:6502bcae5f2c | 101 | GPIO_InitStruct.Pin = GPIO_PIN_6; |
| mbed_official | 625:6502bcae5f2c | 102 | GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; |
| mbed_official | 625:6502bcae5f2c | 103 | GPIO_InitStruct.Pull = GPIO_PULLUP; |
| mbed_official | 625:6502bcae5f2c | 104 | GPIO_InitStruct.Speed = GPIO_SPEED_FAST; |
| mbed_official | 625:6502bcae5f2c | 105 | HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); |
| mbed_official | 625:6502bcae5f2c | 106 | #endif |
| mbed_official | 625:6502bcae5f2c | 107 | |
| mbed_official | 625:6502bcae5f2c | 108 | return HAL_OK; |
| mbed_official | 625:6502bcae5f2c | 109 | } |
| mbed_official | 625:6502bcae5f2c | 110 | |
| mbed_official | 625:6502bcae5f2c | 111 | /** |
| mbed_official | 625:6502bcae5f2c | 112 | * @} |
| mbed_official | 625:6502bcae5f2c | 113 | */ |
| mbed_official | 625:6502bcae5f2c | 114 | |
| mbed_official | 625:6502bcae5f2c | 115 | /** |
| mbed_official | 625:6502bcae5f2c | 116 | * @} |
| mbed_official | 625:6502bcae5f2c | 117 | */ |
| mbed_official | 625:6502bcae5f2c | 118 | |
| mbed_official | 625:6502bcae5f2c | 119 | /** |
| mbed_official | 625:6502bcae5f2c | 120 | * @} |
| mbed_official | 625:6502bcae5f2c | 121 | */ |
| mbed_official | 625:6502bcae5f2c | 122 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
