mbed library sources
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targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_NUCLEO_F446RE/hal_tick.c@613:bc40b8d2aec4, 2015-08-20 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Aug 20 10:45:13 2015 +0100
- Revision:
- 613:bc40b8d2aec4
- Parent:
- 553:063b9f2f393c
Synchronized with git revision 92ca8c7b60a283b6bb60eb65b183dac1599f0ade
Full URL: https://github.com/mbedmicro/mbed/commit/92ca8c7b60a283b6bb60eb65b183dac1599f0ade/
Nordic: update application start address in GCC linker script
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 553:063b9f2f393c | 1 | /** |
mbed_official | 553:063b9f2f393c | 2 | ****************************************************************************** |
mbed_official | 553:063b9f2f393c | 3 | * @file hal_tick.c |
mbed_official | 553:063b9f2f393c | 4 | * @author MCD Application Team |
mbed_official | 553:063b9f2f393c | 5 | * @brief Initialization of HAL tick |
mbed_official | 553:063b9f2f393c | 6 | ****************************************************************************** |
mbed_official | 553:063b9f2f393c | 7 | * @attention |
mbed_official | 553:063b9f2f393c | 8 | * |
mbed_official | 613:bc40b8d2aec4 | 9 | * <h2><center>© COPYRIGHT 2015 STMicroelectronics</center></h2> |
mbed_official | 553:063b9f2f393c | 10 | * |
mbed_official | 553:063b9f2f393c | 11 | * Redistribution and use in source and binary forms, with or without modification, |
mbed_official | 553:063b9f2f393c | 12 | * are permitted provided that the following conditions are met: |
mbed_official | 553:063b9f2f393c | 13 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 553:063b9f2f393c | 14 | * this list of conditions and the following disclaimer. |
mbed_official | 553:063b9f2f393c | 15 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 553:063b9f2f393c | 16 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 553:063b9f2f393c | 17 | * and/or other materials provided with the distribution. |
mbed_official | 553:063b9f2f393c | 18 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 553:063b9f2f393c | 19 | * may be used to endorse or promote products derived from this software |
mbed_official | 553:063b9f2f393c | 20 | * without specific prior written permission. |
mbed_official | 553:063b9f2f393c | 21 | * |
mbed_official | 553:063b9f2f393c | 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 553:063b9f2f393c | 23 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 553:063b9f2f393c | 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 553:063b9f2f393c | 25 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 553:063b9f2f393c | 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 553:063b9f2f393c | 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 553:063b9f2f393c | 28 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 553:063b9f2f393c | 29 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 553:063b9f2f393c | 30 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 553:063b9f2f393c | 31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 553:063b9f2f393c | 32 | * |
mbed_official | 553:063b9f2f393c | 33 | ****************************************************************************** |
mbed_official | 553:063b9f2f393c | 34 | */ |
mbed_official | 553:063b9f2f393c | 35 | #include "hal_tick.h" |
mbed_official | 553:063b9f2f393c | 36 | |
mbed_official | 613:bc40b8d2aec4 | 37 | // 0=NO, 1=PB6 toggles at each tick |
mbed_official | 613:bc40b8d2aec4 | 38 | #define DEBUG_TICK 0 |
mbed_official | 613:bc40b8d2aec4 | 39 | |
mbed_official | 553:063b9f2f393c | 40 | TIM_HandleTypeDef TimMasterHandle; |
mbed_official | 553:063b9f2f393c | 41 | uint32_t PreviousVal = 0; |
mbed_official | 553:063b9f2f393c | 42 | |
mbed_official | 553:063b9f2f393c | 43 | void us_ticker_irq_handler(void); |
mbed_official | 553:063b9f2f393c | 44 | |
mbed_official | 553:063b9f2f393c | 45 | void timer_irq_handler(void) { |
mbed_official | 553:063b9f2f393c | 46 | // Channel 1 for mbed timeout |
mbed_official | 553:063b9f2f393c | 47 | if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC1) == SET) { |
mbed_official | 553:063b9f2f393c | 48 | us_ticker_irq_handler(); |
mbed_official | 553:063b9f2f393c | 49 | } |
mbed_official | 553:063b9f2f393c | 50 | |
mbed_official | 553:063b9f2f393c | 51 | // Channel 2 for HAL tick |
mbed_official | 553:063b9f2f393c | 52 | if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC2) == SET) { |
mbed_official | 553:063b9f2f393c | 53 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2); |
mbed_official | 553:063b9f2f393c | 54 | uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle); |
mbed_official | 553:063b9f2f393c | 55 | if ((val - PreviousVal) >= HAL_TICK_DELAY) { |
mbed_official | 553:063b9f2f393c | 56 | // Increment HAL variable |
mbed_official | 553:063b9f2f393c | 57 | HAL_IncTick(); |
mbed_official | 553:063b9f2f393c | 58 | // Prepare next interrupt |
mbed_official | 553:063b9f2f393c | 59 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY); |
mbed_official | 553:063b9f2f393c | 60 | PreviousVal = val; |
mbed_official | 613:bc40b8d2aec4 | 61 | #if DEBUG_TICK > 0 |
mbed_official | 553:063b9f2f393c | 62 | HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6); |
mbed_official | 553:063b9f2f393c | 63 | #endif |
mbed_official | 553:063b9f2f393c | 64 | } |
mbed_official | 553:063b9f2f393c | 65 | } |
mbed_official | 553:063b9f2f393c | 66 | } |
mbed_official | 553:063b9f2f393c | 67 | |
mbed_official | 553:063b9f2f393c | 68 | // Reconfigure the HAL tick using a standard timer instead of systick. |
mbed_official | 553:063b9f2f393c | 69 | HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) { |
mbed_official | 613:bc40b8d2aec4 | 70 | RCC_ClkInitTypeDef RCC_ClkInitStruct; |
mbed_official | 613:bc40b8d2aec4 | 71 | uint32_t PclkFreq; |
mbed_official | 613:bc40b8d2aec4 | 72 | |
mbed_official | 613:bc40b8d2aec4 | 73 | // Get clock configuration |
mbed_official | 613:bc40b8d2aec4 | 74 | // Note: PclkFreq contains here the Latency (not used after) |
mbed_official | 613:bc40b8d2aec4 | 75 | HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &PclkFreq); |
mbed_official | 613:bc40b8d2aec4 | 76 | |
mbed_official | 613:bc40b8d2aec4 | 77 | // Get TIM5 clock value |
mbed_official | 613:bc40b8d2aec4 | 78 | PclkFreq = HAL_RCC_GetPCLK1Freq(); |
mbed_official | 613:bc40b8d2aec4 | 79 | |
mbed_official | 553:063b9f2f393c | 80 | // Enable timer clock |
mbed_official | 553:063b9f2f393c | 81 | TIM_MST_RCC; |
mbed_official | 553:063b9f2f393c | 82 | |
mbed_official | 553:063b9f2f393c | 83 | // Reset timer |
mbed_official | 553:063b9f2f393c | 84 | TIM_MST_RESET_ON; |
mbed_official | 553:063b9f2f393c | 85 | TIM_MST_RESET_OFF; |
mbed_official | 613:bc40b8d2aec4 | 86 | |
mbed_official | 553:063b9f2f393c | 87 | // Configure time base |
mbed_official | 553:063b9f2f393c | 88 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 553:063b9f2f393c | 89 | TimMasterHandle.Init.Period = 0xFFFFFFFF; |
mbed_official | 613:bc40b8d2aec4 | 90 | |
mbed_official | 613:bc40b8d2aec4 | 91 | // TIMxCLK = PCLKx when the APB prescaler = 1 else TIMxCLK = 2 * PCLKx |
mbed_official | 613:bc40b8d2aec4 | 92 | if (RCC_ClkInitStruct.APB1CLKDivider == RCC_HCLK_DIV1) |
mbed_official | 613:bc40b8d2aec4 | 93 | TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq) / 1000000) - 1; // 1 us tick |
mbed_official | 613:bc40b8d2aec4 | 94 | else |
mbed_official | 613:bc40b8d2aec4 | 95 | TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq * 2) / 1000000) - 1; // 1 us tick |
mbed_official | 613:bc40b8d2aec4 | 96 | |
mbed_official | 553:063b9f2f393c | 97 | TimMasterHandle.Init.ClockDivision = 0; |
mbed_official | 553:063b9f2f393c | 98 | TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP; |
mbed_official | 553:063b9f2f393c | 99 | TimMasterHandle.Init.RepetitionCounter = 0; |
mbed_official | 553:063b9f2f393c | 100 | HAL_TIM_OC_Init(&TimMasterHandle); |
mbed_official | 553:063b9f2f393c | 101 | |
mbed_official | 553:063b9f2f393c | 102 | NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler); |
mbed_official | 553:063b9f2f393c | 103 | NVIC_EnableIRQ(TIM_MST_IRQ); |
mbed_official | 553:063b9f2f393c | 104 | |
mbed_official | 553:063b9f2f393c | 105 | // Channel 1 for mbed timeout |
mbed_official | 553:063b9f2f393c | 106 | HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1); |
mbed_official | 553:063b9f2f393c | 107 | |
mbed_official | 553:063b9f2f393c | 108 | // Channel 2 for HAL tick |
mbed_official | 553:063b9f2f393c | 109 | HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2); |
mbed_official | 553:063b9f2f393c | 110 | PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle); |
mbed_official | 553:063b9f2f393c | 111 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY); |
mbed_official | 553:063b9f2f393c | 112 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2); |
mbed_official | 553:063b9f2f393c | 113 | |
mbed_official | 613:bc40b8d2aec4 | 114 | #if DEBUG_TICK > 0 |
mbed_official | 553:063b9f2f393c | 115 | __GPIOB_CLK_ENABLE(); |
mbed_official | 553:063b9f2f393c | 116 | GPIO_InitTypeDef GPIO_InitStruct; |
mbed_official | 553:063b9f2f393c | 117 | GPIO_InitStruct.Pin = GPIO_PIN_6; |
mbed_official | 553:063b9f2f393c | 118 | GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; |
mbed_official | 553:063b9f2f393c | 119 | GPIO_InitStruct.Pull = GPIO_PULLUP; |
mbed_official | 553:063b9f2f393c | 120 | GPIO_InitStruct.Speed = GPIO_SPEED_FAST; |
mbed_official | 553:063b9f2f393c | 121 | HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); |
mbed_official | 553:063b9f2f393c | 122 | #endif |
mbed_official | 553:063b9f2f393c | 123 | |
mbed_official | 553:063b9f2f393c | 124 | return HAL_OK; |
mbed_official | 553:063b9f2f393c | 125 | } |
mbed_official | 553:063b9f2f393c | 126 | |
mbed_official | 553:063b9f2f393c | 127 | /** |
mbed_official | 553:063b9f2f393c | 128 | * @} |
mbed_official | 553:063b9f2f393c | 129 | */ |
mbed_official | 553:063b9f2f393c | 130 | |
mbed_official | 553:063b9f2f393c | 131 | /** |
mbed_official | 553:063b9f2f393c | 132 | * @} |
mbed_official | 553:063b9f2f393c | 133 | */ |
mbed_official | 553:063b9f2f393c | 134 | |
mbed_official | 553:063b9f2f393c | 135 | /** |
mbed_official | 553:063b9f2f393c | 136 | * @} |
mbed_official | 553:063b9f2f393c | 137 | */ |
mbed_official | 553:063b9f2f393c | 138 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |