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Last commit 20 Feb 2019 by 
mbed official
targets/cmsis/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F302R8/hal_tick.c@579:53297373a894, 2015-07-01 (annotated)
- Committer:
- mbed_official
- Date:
- Wed Jul 01 09:45:11 2015 +0100
- Revision:
- 579:53297373a894
- Parent:
- 403:91a4bea587f4
Synchronized with git revision d5b4d2ab9c47edb4dc5776e7177b0c2263459081
Full URL: https://github.com/mbedmicro/mbed/commit/d5b4d2ab9c47edb4dc5776e7177b0c2263459081/
Initial version of drivers for SAMR21
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 330:c80ac197fa6a | 1 | /** |
| mbed_official | 330:c80ac197fa6a | 2 | ****************************************************************************** |
| mbed_official | 330:c80ac197fa6a | 3 | * @file hal_tick.c |
| mbed_official | 330:c80ac197fa6a | 4 | * @author MCD Application Team |
| mbed_official | 330:c80ac197fa6a | 5 | * @brief Initialization of HAL tick |
| mbed_official | 330:c80ac197fa6a | 6 | ****************************************************************************** |
| mbed_official | 330:c80ac197fa6a | 7 | * @attention |
| mbed_official | 330:c80ac197fa6a | 8 | * |
| mbed_official | 330:c80ac197fa6a | 9 | * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> |
| mbed_official | 330:c80ac197fa6a | 10 | * |
| mbed_official | 330:c80ac197fa6a | 11 | * Redistribution and use in source and binary forms, with or without modification, |
| mbed_official | 330:c80ac197fa6a | 12 | * are permitted provided that the following conditions are met: |
| mbed_official | 330:c80ac197fa6a | 13 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 330:c80ac197fa6a | 14 | * this list of conditions and the following disclaimer. |
| mbed_official | 330:c80ac197fa6a | 15 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 330:c80ac197fa6a | 16 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 330:c80ac197fa6a | 17 | * and/or other materials provided with the distribution. |
| mbed_official | 330:c80ac197fa6a | 18 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| mbed_official | 330:c80ac197fa6a | 19 | * may be used to endorse or promote products derived from this software |
| mbed_official | 330:c80ac197fa6a | 20 | * without specific prior written permission. |
| mbed_official | 330:c80ac197fa6a | 21 | * |
| mbed_official | 330:c80ac197fa6a | 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| mbed_official | 330:c80ac197fa6a | 23 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| mbed_official | 330:c80ac197fa6a | 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| mbed_official | 330:c80ac197fa6a | 25 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| mbed_official | 330:c80ac197fa6a | 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 330:c80ac197fa6a | 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| mbed_official | 330:c80ac197fa6a | 28 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| mbed_official | 330:c80ac197fa6a | 29 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| mbed_official | 330:c80ac197fa6a | 30 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| mbed_official | 330:c80ac197fa6a | 31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 330:c80ac197fa6a | 32 | * |
| mbed_official | 330:c80ac197fa6a | 33 | ****************************************************************************** |
| mbed_official | 330:c80ac197fa6a | 34 | */ |
| mbed_official | 330:c80ac197fa6a | 35 | #include "hal_tick.h" |
| mbed_official | 330:c80ac197fa6a | 36 | |
| mbed_official | 330:c80ac197fa6a | 37 | TIM_HandleTypeDef TimMasterHandle; |
| mbed_official | 330:c80ac197fa6a | 38 | uint32_t PreviousVal = 0; |
| mbed_official | 330:c80ac197fa6a | 39 | |
| mbed_official | 330:c80ac197fa6a | 40 | void us_ticker_irq_handler(void); |
| mbed_official | 330:c80ac197fa6a | 41 | |
| mbed_official | 330:c80ac197fa6a | 42 | void timer_irq_handler(void) { |
| mbed_official | 330:c80ac197fa6a | 43 | // Channel 1 for mbed timeout |
| mbed_official | 330:c80ac197fa6a | 44 | if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC1) == SET) { |
| mbed_official | 330:c80ac197fa6a | 45 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1); |
| mbed_official | 330:c80ac197fa6a | 46 | us_ticker_irq_handler(); |
| mbed_official | 330:c80ac197fa6a | 47 | } |
| mbed_official | 330:c80ac197fa6a | 48 | |
| mbed_official | 330:c80ac197fa6a | 49 | // Channel 2 for HAL tick |
| mbed_official | 330:c80ac197fa6a | 50 | if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC2) == SET) { |
| mbed_official | 330:c80ac197fa6a | 51 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2); |
| mbed_official | 330:c80ac197fa6a | 52 | uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle); |
| mbed_official | 330:c80ac197fa6a | 53 | if ((val - PreviousVal) >= HAL_TICK_DELAY) { |
| mbed_official | 330:c80ac197fa6a | 54 | // Increment HAL variable |
| mbed_official | 330:c80ac197fa6a | 55 | HAL_IncTick(); |
| mbed_official | 330:c80ac197fa6a | 56 | // Prepare next interrupt |
| mbed_official | 330:c80ac197fa6a | 57 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY); |
| mbed_official | 330:c80ac197fa6a | 58 | PreviousVal = val; |
| mbed_official | 330:c80ac197fa6a | 59 | #if 0 // For DEBUG only |
| mbed_official | 330:c80ac197fa6a | 60 | HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6); |
| mbed_official | 330:c80ac197fa6a | 61 | #endif |
| mbed_official | 330:c80ac197fa6a | 62 | } |
| mbed_official | 330:c80ac197fa6a | 63 | } |
| mbed_official | 330:c80ac197fa6a | 64 | } |
| mbed_official | 330:c80ac197fa6a | 65 | |
| mbed_official | 330:c80ac197fa6a | 66 | // Reconfigure the HAL tick using a standard timer instead of systick. |
| mbed_official | 330:c80ac197fa6a | 67 | HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) { |
| mbed_official | 330:c80ac197fa6a | 68 | // Enable timer clock |
| mbed_official | 330:c80ac197fa6a | 69 | TIM_MST_RCC; |
| mbed_official | 330:c80ac197fa6a | 70 | |
| mbed_official | 330:c80ac197fa6a | 71 | // Reset timer |
| mbed_official | 330:c80ac197fa6a | 72 | TIM_MST_RESET_ON; |
| mbed_official | 330:c80ac197fa6a | 73 | TIM_MST_RESET_OFF; |
| mbed_official | 403:91a4bea587f4 | 74 | |
| mbed_official | 330:c80ac197fa6a | 75 | // Configure time base |
| mbed_official | 330:c80ac197fa6a | 76 | TimMasterHandle.Instance = TIM_MST; |
| mbed_official | 330:c80ac197fa6a | 77 | TimMasterHandle.Init.Period = 0xFFFFFFFF; |
| mbed_official | 330:c80ac197fa6a | 78 | TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 us tick |
| mbed_official | 330:c80ac197fa6a | 79 | TimMasterHandle.Init.ClockDivision = 0; |
| mbed_official | 330:c80ac197fa6a | 80 | TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP; |
| mbed_official | 330:c80ac197fa6a | 81 | TimMasterHandle.Init.RepetitionCounter = 0; |
| mbed_official | 330:c80ac197fa6a | 82 | HAL_TIM_OC_Init(&TimMasterHandle); |
| mbed_official | 330:c80ac197fa6a | 83 | |
| mbed_official | 330:c80ac197fa6a | 84 | NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler); |
| mbed_official | 330:c80ac197fa6a | 85 | NVIC_EnableIRQ(TIM_MST_IRQ); |
| mbed_official | 330:c80ac197fa6a | 86 | |
| mbed_official | 330:c80ac197fa6a | 87 | // Channel 1 for mbed timeout |
| mbed_official | 330:c80ac197fa6a | 88 | HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1); |
| mbed_official | 330:c80ac197fa6a | 89 | |
| mbed_official | 330:c80ac197fa6a | 90 | // Channel 2 for HAL tick |
| mbed_official | 330:c80ac197fa6a | 91 | HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2); |
| mbed_official | 330:c80ac197fa6a | 92 | PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle); |
| mbed_official | 330:c80ac197fa6a | 93 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY); |
| mbed_official | 330:c80ac197fa6a | 94 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2); |
| mbed_official | 330:c80ac197fa6a | 95 | |
| mbed_official | 330:c80ac197fa6a | 96 | #if 0 // For DEBUG only |
| mbed_official | 330:c80ac197fa6a | 97 | __GPIOB_CLK_ENABLE(); |
| mbed_official | 330:c80ac197fa6a | 98 | GPIO_InitTypeDef GPIO_InitStruct; |
| mbed_official | 330:c80ac197fa6a | 99 | GPIO_InitStruct.Pin = GPIO_PIN_6; |
| mbed_official | 330:c80ac197fa6a | 100 | GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; |
| mbed_official | 330:c80ac197fa6a | 101 | GPIO_InitStruct.Pull = GPIO_PULLUP; |
| mbed_official | 330:c80ac197fa6a | 102 | GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; |
| mbed_official | 330:c80ac197fa6a | 103 | HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); |
| mbed_official | 330:c80ac197fa6a | 104 | #endif |
| mbed_official | 330:c80ac197fa6a | 105 | |
| mbed_official | 330:c80ac197fa6a | 106 | return HAL_OK; |
| mbed_official | 330:c80ac197fa6a | 107 | } |
| mbed_official | 330:c80ac197fa6a | 108 | |
| mbed_official | 330:c80ac197fa6a | 109 | /** |
| mbed_official | 330:c80ac197fa6a | 110 | * @} |
| mbed_official | 330:c80ac197fa6a | 111 | */ |
| mbed_official | 330:c80ac197fa6a | 112 | |
| mbed_official | 330:c80ac197fa6a | 113 | /** |
| mbed_official | 330:c80ac197fa6a | 114 | * @} |
| mbed_official | 330:c80ac197fa6a | 115 | */ |
| mbed_official | 330:c80ac197fa6a | 116 | |
| mbed_official | 330:c80ac197fa6a | 117 | /** |
| mbed_official | 330:c80ac197fa6a | 118 | * @} |
| mbed_official | 330:c80ac197fa6a | 119 | */ |
| mbed_official | 330:c80ac197fa6a | 120 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
