added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/cmsis/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F746NG/hal_tick.c@83:a036322b8637, 2016-03-07 (annotated)
- Committer:
- mbed_official
- Date:
- Mon Mar 07 10:00:14 2016 +0000
- Revision:
- 83:a036322b8637
- Parent:
- 0:9b334a45a8ff
- Child:
- 144:ef7eb2e8f9f7
Synchronized with git revision ee20d03969aa5c570152f88e8f3d8a4739eed40b
Full URL: https://github.com/mbedmicro/mbed/commit/ee20d03969aa5c570152f88e8f3d8a4739eed40b/
[STM32F7] Update STM32F7Cube_FW version
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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bogdanm | 0:9b334a45a8ff | 1 | /** |
bogdanm | 0:9b334a45a8ff | 2 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 3 | * @file hal_tick.c |
bogdanm | 0:9b334a45a8ff | 4 | * @author MCD Application Team |
bogdanm | 0:9b334a45a8ff | 5 | * @brief Initialization of HAL tick |
bogdanm | 0:9b334a45a8ff | 6 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 7 | * @attention |
bogdanm | 0:9b334a45a8ff | 8 | * |
mbed_official | 83:a036322b8637 | 9 | * <h2><center>© COPYRIGHT 2016 STMicroelectronics</center></h2> |
bogdanm | 0:9b334a45a8ff | 10 | * |
bogdanm | 0:9b334a45a8ff | 11 | * Redistribution and use in source and binary forms, with or without modification, |
bogdanm | 0:9b334a45a8ff | 12 | * are permitted provided that the following conditions are met: |
bogdanm | 0:9b334a45a8ff | 13 | * 1. Redistributions of source code must retain the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 14 | * this list of conditions and the following disclaimer. |
bogdanm | 0:9b334a45a8ff | 15 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 16 | * this list of conditions and the following disclaimer in the documentation |
bogdanm | 0:9b334a45a8ff | 17 | * and/or other materials provided with the distribution. |
bogdanm | 0:9b334a45a8ff | 18 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
bogdanm | 0:9b334a45a8ff | 19 | * may be used to endorse or promote products derived from this software |
bogdanm | 0:9b334a45a8ff | 20 | * without specific prior written permission. |
bogdanm | 0:9b334a45a8ff | 21 | * |
bogdanm | 0:9b334a45a8ff | 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
bogdanm | 0:9b334a45a8ff | 23 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
bogdanm | 0:9b334a45a8ff | 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
bogdanm | 0:9b334a45a8ff | 25 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
bogdanm | 0:9b334a45a8ff | 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
bogdanm | 0:9b334a45a8ff | 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
bogdanm | 0:9b334a45a8ff | 28 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
bogdanm | 0:9b334a45a8ff | 29 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
bogdanm | 0:9b334a45a8ff | 30 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
bogdanm | 0:9b334a45a8ff | 31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
bogdanm | 0:9b334a45a8ff | 32 | * |
bogdanm | 0:9b334a45a8ff | 33 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 34 | */ |
bogdanm | 0:9b334a45a8ff | 35 | #include "hal_tick.h" |
bogdanm | 0:9b334a45a8ff | 36 | |
bogdanm | 0:9b334a45a8ff | 37 | // 0=NO, 1=PG6 toggles at each tick |
bogdanm | 0:9b334a45a8ff | 38 | #define DEBUG_TICK 0 |
bogdanm | 0:9b334a45a8ff | 39 | |
bogdanm | 0:9b334a45a8ff | 40 | TIM_HandleTypeDef TimMasterHandle; |
bogdanm | 0:9b334a45a8ff | 41 | uint32_t PreviousVal = 0; |
bogdanm | 0:9b334a45a8ff | 42 | |
bogdanm | 0:9b334a45a8ff | 43 | void HAL_IncTick(void); |
bogdanm | 0:9b334a45a8ff | 44 | void us_ticker_irq_handler(void); |
bogdanm | 0:9b334a45a8ff | 45 | |
bogdanm | 0:9b334a45a8ff | 46 | void timer_irq_handler(void) { |
bogdanm | 0:9b334a45a8ff | 47 | // Channel 1 for mbed timeout |
bogdanm | 0:9b334a45a8ff | 48 | if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC1) == SET) { |
bogdanm | 0:9b334a45a8ff | 49 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1); |
bogdanm | 0:9b334a45a8ff | 50 | us_ticker_irq_handler(); |
bogdanm | 0:9b334a45a8ff | 51 | } |
bogdanm | 0:9b334a45a8ff | 52 | |
bogdanm | 0:9b334a45a8ff | 53 | // Channel 2 for HAL tick |
bogdanm | 0:9b334a45a8ff | 54 | if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC2) == SET) { |
bogdanm | 0:9b334a45a8ff | 55 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2); |
bogdanm | 0:9b334a45a8ff | 56 | uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle); |
bogdanm | 0:9b334a45a8ff | 57 | if ((val - PreviousVal) >= HAL_TICK_DELAY) { |
bogdanm | 0:9b334a45a8ff | 58 | // Increment HAL variable |
bogdanm | 0:9b334a45a8ff | 59 | HAL_IncTick(); |
bogdanm | 0:9b334a45a8ff | 60 | // Prepare next interrupt |
bogdanm | 0:9b334a45a8ff | 61 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY); |
bogdanm | 0:9b334a45a8ff | 62 | PreviousVal = val; |
bogdanm | 0:9b334a45a8ff | 63 | #if DEBUG_TICK > 0 |
bogdanm | 0:9b334a45a8ff | 64 | HAL_GPIO_TogglePin(GPIOG, GPIO_PIN_6); |
bogdanm | 0:9b334a45a8ff | 65 | #endif |
bogdanm | 0:9b334a45a8ff | 66 | } |
bogdanm | 0:9b334a45a8ff | 67 | } |
bogdanm | 0:9b334a45a8ff | 68 | } |
bogdanm | 0:9b334a45a8ff | 69 | |
bogdanm | 0:9b334a45a8ff | 70 | // Reconfigure the HAL tick using a standard timer instead of systick. |
bogdanm | 0:9b334a45a8ff | 71 | HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) { |
bogdanm | 0:9b334a45a8ff | 72 | RCC_ClkInitTypeDef RCC_ClkInitStruct; |
bogdanm | 0:9b334a45a8ff | 73 | uint32_t PclkFreq; |
bogdanm | 0:9b334a45a8ff | 74 | |
bogdanm | 0:9b334a45a8ff | 75 | // Get clock configuration |
bogdanm | 0:9b334a45a8ff | 76 | // Note: PclkFreq contains here the Latency (not used after) |
bogdanm | 0:9b334a45a8ff | 77 | HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &PclkFreq); |
bogdanm | 0:9b334a45a8ff | 78 | |
bogdanm | 0:9b334a45a8ff | 79 | // Get TIM5 clock value |
bogdanm | 0:9b334a45a8ff | 80 | PclkFreq = HAL_RCC_GetPCLK1Freq(); |
bogdanm | 0:9b334a45a8ff | 81 | |
bogdanm | 0:9b334a45a8ff | 82 | // Enable timer clock |
bogdanm | 0:9b334a45a8ff | 83 | TIM_MST_RCC; |
bogdanm | 0:9b334a45a8ff | 84 | |
bogdanm | 0:9b334a45a8ff | 85 | // Reset timer |
bogdanm | 0:9b334a45a8ff | 86 | TIM_MST_RESET_ON; |
bogdanm | 0:9b334a45a8ff | 87 | TIM_MST_RESET_OFF; |
bogdanm | 0:9b334a45a8ff | 88 | |
bogdanm | 0:9b334a45a8ff | 89 | // Configure time base |
bogdanm | 0:9b334a45a8ff | 90 | TimMasterHandle.Instance = TIM_MST; |
bogdanm | 0:9b334a45a8ff | 91 | TimMasterHandle.Init.Period = 0xFFFFFFFF; |
bogdanm | 0:9b334a45a8ff | 92 | |
bogdanm | 0:9b334a45a8ff | 93 | // TIMxCLK = PCLKx when the APB prescaler = 1 else TIMxCLK = 2 * PCLKx |
bogdanm | 0:9b334a45a8ff | 94 | if (RCC_ClkInitStruct.APB1CLKDivider == RCC_HCLK_DIV1) |
bogdanm | 0:9b334a45a8ff | 95 | TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq) / 1000000) - 1; // 1 us tick |
bogdanm | 0:9b334a45a8ff | 96 | else |
bogdanm | 0:9b334a45a8ff | 97 | TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq * 2) / 1000000) - 1; // 1 us tick |
bogdanm | 0:9b334a45a8ff | 98 | |
bogdanm | 0:9b334a45a8ff | 99 | TimMasterHandle.Init.ClockDivision = 0; |
bogdanm | 0:9b334a45a8ff | 100 | TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP; |
bogdanm | 0:9b334a45a8ff | 101 | TimMasterHandle.Init.RepetitionCounter = 0; |
bogdanm | 0:9b334a45a8ff | 102 | HAL_TIM_OC_Init(&TimMasterHandle); |
bogdanm | 0:9b334a45a8ff | 103 | |
bogdanm | 0:9b334a45a8ff | 104 | NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler); |
bogdanm | 0:9b334a45a8ff | 105 | NVIC_EnableIRQ(TIM_MST_IRQ); |
bogdanm | 0:9b334a45a8ff | 106 | |
bogdanm | 0:9b334a45a8ff | 107 | // Channel 1 for mbed timeout |
bogdanm | 0:9b334a45a8ff | 108 | HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1); |
bogdanm | 0:9b334a45a8ff | 109 | |
bogdanm | 0:9b334a45a8ff | 110 | // Channel 2 for HAL tick |
bogdanm | 0:9b334a45a8ff | 111 | HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2); |
bogdanm | 0:9b334a45a8ff | 112 | PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle); |
bogdanm | 0:9b334a45a8ff | 113 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY); |
bogdanm | 0:9b334a45a8ff | 114 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2); |
bogdanm | 0:9b334a45a8ff | 115 | |
bogdanm | 0:9b334a45a8ff | 116 | #if DEBUG_TICK > 0 |
bogdanm | 0:9b334a45a8ff | 117 | __GPIOG_CLK_ENABLE(); |
bogdanm | 0:9b334a45a8ff | 118 | GPIO_InitTypeDef GPIO_InitStruct; |
bogdanm | 0:9b334a45a8ff | 119 | GPIO_InitStruct.Pin = GPIO_PIN_6; |
bogdanm | 0:9b334a45a8ff | 120 | GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; |
bogdanm | 0:9b334a45a8ff | 121 | GPIO_InitStruct.Pull = GPIO_PULLUP; |
bogdanm | 0:9b334a45a8ff | 122 | GPIO_InitStruct.Speed = GPIO_SPEED_FAST; |
bogdanm | 0:9b334a45a8ff | 123 | HAL_GPIO_Init(GPIOG, &GPIO_InitStruct); |
bogdanm | 0:9b334a45a8ff | 124 | #endif |
bogdanm | 0:9b334a45a8ff | 125 | |
bogdanm | 0:9b334a45a8ff | 126 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 127 | } |
bogdanm | 0:9b334a45a8ff | 128 | |
bogdanm | 0:9b334a45a8ff | 129 | /** |
bogdanm | 0:9b334a45a8ff | 130 | * @} |
bogdanm | 0:9b334a45a8ff | 131 | */ |
bogdanm | 0:9b334a45a8ff | 132 | |
bogdanm | 0:9b334a45a8ff | 133 | /** |
bogdanm | 0:9b334a45a8ff | 134 | * @} |
bogdanm | 0:9b334a45a8ff | 135 | */ |
bogdanm | 0:9b334a45a8ff | 136 | |
bogdanm | 0:9b334a45a8ff | 137 | /** |
bogdanm | 0:9b334a45a8ff | 138 | * @} |
bogdanm | 0:9b334a45a8ff | 139 | */ |
bogdanm | 0:9b334a45a8ff | 140 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |