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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

UserRevisionLine numberNew 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>&copy; 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****/