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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_STM32F0/TARGET_NUCLEO_F031K6/hal_tick.c@630:825f75ca301e, 2015-09-28 (annotated)

Committer:
mbed_official
Date:
Mon Sep 28 10:45:10 2015 +0100
Revision:
630:825f75ca301e
Synchronized with git revision 54fbe4144faf309c37205a5d39fa665daa919f10



Full URL: https://github.com/mbedmicro/mbed/commit/54fbe4144faf309c37205a5d39fa665daa919f10/



NUCLEO_F031K6 : Add new target

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 630:825f75ca301e 1 /**
mbed_official 630:825f75ca301e 2 ******************************************************************************
mbed_official 630:825f75ca301e 3 * @file hal_tick.c
mbed_official 630:825f75ca301e 4 * @author MCD Application Team
mbed_official 630:825f75ca301e 5 * @brief Initialization of HAL tick
mbed_official 630:825f75ca301e 6 ******************************************************************************
mbed_official 630:825f75ca301e 7 * @attention
mbed_official 630:825f75ca301e 8 *
mbed_official 630:825f75ca301e 9 * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
mbed_official 630:825f75ca301e 10 *
mbed_official 630:825f75ca301e 11 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 630:825f75ca301e 12 * are permitted provided that the following conditions are met:
mbed_official 630:825f75ca301e 13 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 630:825f75ca301e 14 * this list of conditions and the following disclaimer.
mbed_official 630:825f75ca301e 15 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 630:825f75ca301e 16 * this list of conditions and the following disclaimer in the documentation
mbed_official 630:825f75ca301e 17 * and/or other materials provided with the distribution.
mbed_official 630:825f75ca301e 18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 630:825f75ca301e 19 * may be used to endorse or promote products derived from this software
mbed_official 630:825f75ca301e 20 * without specific prior written permission.
mbed_official 630:825f75ca301e 21 *
mbed_official 630:825f75ca301e 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 630:825f75ca301e 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 630:825f75ca301e 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 630:825f75ca301e 25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 630:825f75ca301e 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 630:825f75ca301e 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 630:825f75ca301e 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 630:825f75ca301e 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 630:825f75ca301e 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 630:825f75ca301e 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 630:825f75ca301e 32 *
mbed_official 630:825f75ca301e 33 ******************************************************************************
mbed_official 630:825f75ca301e 34 */
mbed_official 630:825f75ca301e 35 #include "hal_tick.h"
mbed_official 630:825f75ca301e 36
mbed_official 630:825f75ca301e 37 TIM_HandleTypeDef TimMasterHandle;
mbed_official 630:825f75ca301e 38 uint32_t PreviousVal = 0;
mbed_official 630:825f75ca301e 39
mbed_official 630:825f75ca301e 40 void us_ticker_irq_handler(void);
mbed_official 630:825f75ca301e 41
mbed_official 630:825f75ca301e 42 void timer_irq_handler(void) {
mbed_official 630:825f75ca301e 43 // Channel 1 for mbed timeout
mbed_official 630:825f75ca301e 44 if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC1) == SET) {
mbed_official 630:825f75ca301e 45 us_ticker_irq_handler();
mbed_official 630:825f75ca301e 46 }
mbed_official 630:825f75ca301e 47
mbed_official 630:825f75ca301e 48 // Channel 2 for HAL tick
mbed_official 630:825f75ca301e 49 if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC2) == SET) {
mbed_official 630:825f75ca301e 50 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 630:825f75ca301e 51 uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle);
mbed_official 630:825f75ca301e 52 if ((val - PreviousVal) >= HAL_TICK_DELAY) {
mbed_official 630:825f75ca301e 53 // Increment HAL variable
mbed_official 630:825f75ca301e 54 HAL_IncTick();
mbed_official 630:825f75ca301e 55 // Prepare next interrupt
mbed_official 630:825f75ca301e 56 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY);
mbed_official 630:825f75ca301e 57 PreviousVal = val;
mbed_official 630:825f75ca301e 58 #if 0 // For DEBUG only
mbed_official 630:825f75ca301e 59 HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6);
mbed_official 630:825f75ca301e 60 #endif
mbed_official 630:825f75ca301e 61 }
mbed_official 630:825f75ca301e 62 }
mbed_official 630:825f75ca301e 63 }
mbed_official 630:825f75ca301e 64
mbed_official 630:825f75ca301e 65 // Reconfigure the HAL tick using a standard timer instead of systick.
mbed_official 630:825f75ca301e 66 HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
mbed_official 630:825f75ca301e 67 // Enable timer clock
mbed_official 630:825f75ca301e 68 TIM_MST_RCC;
mbed_official 630:825f75ca301e 69
mbed_official 630:825f75ca301e 70 // Reset timer
mbed_official 630:825f75ca301e 71 TIM_MST_RESET_ON;
mbed_official 630:825f75ca301e 72 TIM_MST_RESET_OFF;
mbed_official 630:825f75ca301e 73
mbed_official 630:825f75ca301e 74 // Update the SystemCoreClock variable
mbed_official 630:825f75ca301e 75 SystemCoreClockUpdate();
mbed_official 630:825f75ca301e 76
mbed_official 630:825f75ca301e 77 // Configure time base
mbed_official 630:825f75ca301e 78 TimMasterHandle.Instance = TIM_MST;
mbed_official 630:825f75ca301e 79 TimMasterHandle.Init.Period = 0xFFFFFFFF;
mbed_official 630:825f75ca301e 80 TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 630:825f75ca301e 81 TimMasterHandle.Init.ClockDivision = 0;
mbed_official 630:825f75ca301e 82 TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
mbed_official 630:825f75ca301e 83 TimMasterHandle.Init.RepetitionCounter = 0;
mbed_official 630:825f75ca301e 84 HAL_TIM_OC_Init(&TimMasterHandle);
mbed_official 630:825f75ca301e 85
mbed_official 630:825f75ca301e 86 NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler);
mbed_official 630:825f75ca301e 87 NVIC_EnableIRQ(TIM_MST_IRQ);
mbed_official 630:825f75ca301e 88
mbed_official 630:825f75ca301e 89 // Channel 1 for mbed timeout
mbed_official 630:825f75ca301e 90 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
mbed_official 630:825f75ca301e 91
mbed_official 630:825f75ca301e 92 // Channel 2 for HAL tick
mbed_official 630:825f75ca301e 93 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2);
mbed_official 630:825f75ca301e 94 PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle);
mbed_official 630:825f75ca301e 95 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY);
mbed_official 630:825f75ca301e 96 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 630:825f75ca301e 97
mbed_official 630:825f75ca301e 98 #if 0 // For DEBUG only
mbed_official 630:825f75ca301e 99 __GPIOB_CLK_ENABLE();
mbed_official 630:825f75ca301e 100 GPIO_InitTypeDef GPIO_InitStruct;
mbed_official 630:825f75ca301e 101 GPIO_InitStruct.Pin = GPIO_PIN_6;
mbed_official 630:825f75ca301e 102 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
mbed_official 630:825f75ca301e 103 GPIO_InitStruct.Pull = GPIO_PULLUP;
mbed_official 630:825f75ca301e 104 GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
mbed_official 630:825f75ca301e 105 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
mbed_official 630:825f75ca301e 106 #endif
mbed_official 630:825f75ca301e 107
mbed_official 630:825f75ca301e 108 return HAL_OK;
mbed_official 630:825f75ca301e 109 }
mbed_official 630:825f75ca301e 110
mbed_official 630:825f75ca301e 111 /**
mbed_official 630:825f75ca301e 112 * @}
mbed_official 630:825f75ca301e 113 */
mbed_official 630:825f75ca301e 114
mbed_official 630:825f75ca301e 115 /**
mbed_official 630:825f75ca301e 116 * @}
mbed_official 630:825f75ca301e 117 */
mbed_official 630:825f75ca301e 118
mbed_official 630:825f75ca301e 119 /**
mbed_official 630:825f75ca301e 120 * @}
mbed_official 630:825f75ca301e 121 */
mbed_official 630:825f75ca301e 122 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/