PHung Tung / DISCO-F746_WAV_PLAYER

SPKT

Dependencies:   F746_GUI SD_PlayerSkeleton F746_SAI_IO

SRC_STM32F7/targets/cmsis/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F746NG/hal_tick.c@0:8ede47d38d10, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:37:21 2019 +0000
Revision:
0:8ede47d38d10
SPKT

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phungductung 0:8ede47d38d10 1 /**
phungductung 0:8ede47d38d10 2 ******************************************************************************
phungductung 0:8ede47d38d10 3 * @file hal_tick.c
phungductung 0:8ede47d38d10 4 * @author MCD Application Team
phungductung 0:8ede47d38d10 5 * @brief Initialization of HAL tick
phungductung 0:8ede47d38d10 6 ******************************************************************************
phungductung 0:8ede47d38d10 7 * @attention
phungductung 0:8ede47d38d10 8 *
phungductung 0:8ede47d38d10 9 * <h2><center>&copy; COPYRIGHT 2016 STMicroelectronics</center></h2>
phungductung 0:8ede47d38d10 10 *
phungductung 0:8ede47d38d10 11 * Redistribution and use in source and binary forms, with or without modification,
phungductung 0:8ede47d38d10 12 * are permitted provided that the following conditions are met:
phungductung 0:8ede47d38d10 13 * 1. Redistributions of source code must retain the above copyright notice,
phungductung 0:8ede47d38d10 14 * this list of conditions and the following disclaimer.
phungductung 0:8ede47d38d10 15 * 2. Redistributions in binary form must reproduce the above copyright notice,
phungductung 0:8ede47d38d10 16 * this list of conditions and the following disclaimer in the documentation
phungductung 0:8ede47d38d10 17 * and/or other materials provided with the distribution.
phungductung 0:8ede47d38d10 18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
phungductung 0:8ede47d38d10 19 * may be used to endorse or promote products derived from this software
phungductung 0:8ede47d38d10 20 * without specific prior written permission.
phungductung 0:8ede47d38d10 21 *
phungductung 0:8ede47d38d10 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
phungductung 0:8ede47d38d10 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
phungductung 0:8ede47d38d10 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
phungductung 0:8ede47d38d10 25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
phungductung 0:8ede47d38d10 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
phungductung 0:8ede47d38d10 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
phungductung 0:8ede47d38d10 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
phungductung 0:8ede47d38d10 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
phungductung 0:8ede47d38d10 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
phungductung 0:8ede47d38d10 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
phungductung 0:8ede47d38d10 32 *
phungductung 0:8ede47d38d10 33 ******************************************************************************
phungductung 0:8ede47d38d10 34 */
phungductung 0:8ede47d38d10 35 #include "hal_tick.h"
phungductung 0:8ede47d38d10 36
phungductung 0:8ede47d38d10 37 // 0=NO, 1=PG6 toggles at each tick
phungductung 0:8ede47d38d10 38 #define DEBUG_TICK 0
phungductung 0:8ede47d38d10 39
phungductung 0:8ede47d38d10 40 TIM_HandleTypeDef TimMasterHandle;
phungductung 0:8ede47d38d10 41 uint32_t PreviousVal = 0;
phungductung 0:8ede47d38d10 42
phungductung 0:8ede47d38d10 43 void HAL_IncTick(void);
phungductung 0:8ede47d38d10 44 void us_ticker_irq_handler(void);
phungductung 0:8ede47d38d10 45
phungductung 0:8ede47d38d10 46 void timer_irq_handler(void) {
phungductung 0:8ede47d38d10 47 // Channel 1 for mbed timeout
phungductung 0:8ede47d38d10 48 if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC1) == SET) {
phungductung 0:8ede47d38d10 49 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
phungductung 0:8ede47d38d10 50 us_ticker_irq_handler();
phungductung 0:8ede47d38d10 51 }
phungductung 0:8ede47d38d10 52
phungductung 0:8ede47d38d10 53 // Channel 2 for HAL tick
phungductung 0:8ede47d38d10 54 if (__HAL_TIM_GET_ITSTATUS(&TimMasterHandle, TIM_IT_CC2) == SET) {
phungductung 0:8ede47d38d10 55 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2);
phungductung 0:8ede47d38d10 56 uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle);
phungductung 0:8ede47d38d10 57 if ((val - PreviousVal) >= HAL_TICK_DELAY) {
phungductung 0:8ede47d38d10 58 // Increment HAL variable
phungductung 0:8ede47d38d10 59 HAL_IncTick();
phungductung 0:8ede47d38d10 60 // Prepare next interrupt
phungductung 0:8ede47d38d10 61 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY);
phungductung 0:8ede47d38d10 62 PreviousVal = val;
phungductung 0:8ede47d38d10 63 #if DEBUG_TICK > 0
phungductung 0:8ede47d38d10 64 HAL_GPIO_TogglePin(GPIOG, GPIO_PIN_6);
phungductung 0:8ede47d38d10 65 #endif
phungductung 0:8ede47d38d10 66 }
phungductung 0:8ede47d38d10 67 }
phungductung 0:8ede47d38d10 68 }
phungductung 0:8ede47d38d10 69
phungductung 0:8ede47d38d10 70 // Reconfigure the HAL tick using a standard timer instead of systick.
phungductung 0:8ede47d38d10 71 HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
phungductung 0:8ede47d38d10 72 RCC_ClkInitTypeDef RCC_ClkInitStruct;
phungductung 0:8ede47d38d10 73 uint32_t PclkFreq;
phungductung 0:8ede47d38d10 74
phungductung 0:8ede47d38d10 75 // Get clock configuration
phungductung 0:8ede47d38d10 76 // Note: PclkFreq contains here the Latency (not used after)
phungductung 0:8ede47d38d10 77 HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &PclkFreq);
phungductung 0:8ede47d38d10 78
phungductung 0:8ede47d38d10 79 // Get TIM5 clock value
phungductung 0:8ede47d38d10 80 PclkFreq = HAL_RCC_GetPCLK1Freq();
phungductung 0:8ede47d38d10 81
phungductung 0:8ede47d38d10 82 // Enable timer clock
phungductung 0:8ede47d38d10 83 TIM_MST_RCC;
phungductung 0:8ede47d38d10 84
phungductung 0:8ede47d38d10 85 // Reset timer
phungductung 0:8ede47d38d10 86 TIM_MST_RESET_ON;
phungductung 0:8ede47d38d10 87 TIM_MST_RESET_OFF;
phungductung 0:8ede47d38d10 88
phungductung 0:8ede47d38d10 89 // Configure time base
phungductung 0:8ede47d38d10 90 TimMasterHandle.Instance = TIM_MST;
phungductung 0:8ede47d38d10 91 TimMasterHandle.Init.Period = 0xFFFFFFFF;
phungductung 0:8ede47d38d10 92
phungductung 0:8ede47d38d10 93 // TIMxCLK = PCLKx when the APB prescaler = 1 else TIMxCLK = 2 * PCLKx
phungductung 0:8ede47d38d10 94 if (RCC_ClkInitStruct.APB1CLKDivider == RCC_HCLK_DIV1)
phungductung 0:8ede47d38d10 95 TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq) / 1000000) - 1; // 1 us tick
phungductung 0:8ede47d38d10 96 else
phungductung 0:8ede47d38d10 97 TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq * 2) / 1000000) - 1; // 1 us tick
phungductung 0:8ede47d38d10 98
phungductung 0:8ede47d38d10 99 TimMasterHandle.Init.ClockDivision = 0;
phungductung 0:8ede47d38d10 100 TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
phungductung 0:8ede47d38d10 101 TimMasterHandle.Init.RepetitionCounter = 0;
phungductung 0:8ede47d38d10 102 HAL_TIM_OC_Init(&TimMasterHandle);
phungductung 0:8ede47d38d10 103
phungductung 0:8ede47d38d10 104 NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler);
phungductung 0:8ede47d38d10 105 NVIC_EnableIRQ(TIM_MST_IRQ);
phungductung 0:8ede47d38d10 106
phungductung 0:8ede47d38d10 107 // Channel 1 for mbed timeout
phungductung 0:8ede47d38d10 108 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
phungductung 0:8ede47d38d10 109
phungductung 0:8ede47d38d10 110 // Channel 2 for HAL tick
phungductung 0:8ede47d38d10 111 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2);
phungductung 0:8ede47d38d10 112 PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle);
phungductung 0:8ede47d38d10 113 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY);
phungductung 0:8ede47d38d10 114 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
phungductung 0:8ede47d38d10 115
phungductung 0:8ede47d38d10 116 #if DEBUG_TICK > 0
phungductung 0:8ede47d38d10 117 __GPIOG_CLK_ENABLE();
phungductung 0:8ede47d38d10 118 GPIO_InitTypeDef GPIO_InitStruct;
phungductung 0:8ede47d38d10 119 GPIO_InitStruct.Pin = GPIO_PIN_6;
phungductung 0:8ede47d38d10 120 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
phungductung 0:8ede47d38d10 121 GPIO_InitStruct.Pull = GPIO_PULLUP;
phungductung 0:8ede47d38d10 122 GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
phungductung 0:8ede47d38d10 123 HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
phungductung 0:8ede47d38d10 124 #endif
phungductung 0:8ede47d38d10 125
phungductung 0:8ede47d38d10 126 return HAL_OK;
phungductung 0:8ede47d38d10 127 }
phungductung 0:8ede47d38d10 128
phungductung 0:8ede47d38d10 129 /**
phungductung 0:8ede47d38d10 130 * @}
phungductung 0:8ede47d38d10 131 */
phungductung 0:8ede47d38d10 132
phungductung 0:8ede47d38d10 133 /**
phungductung 0:8ede47d38d10 134 * @}
phungductung 0:8ede47d38d10 135 */
phungductung 0:8ede47d38d10 136
phungductung 0:8ede47d38d10 137 /**
phungductung 0:8ede47d38d10 138 * @}
phungductung 0:8ede47d38d10 139 */
phungductung 0:8ede47d38d10 140 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/