mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_UBLOX_C029/hal_tick.c@148:21d94c44109e, 2016-09-30 (annotated)

Committer:
<>
Date:
Fri Sep 30 18:07:01 2016 +0100
Revision:
148:21d94c44109e
Parent:
144:ef7eb2e8f9f7 
This updates the lib to the mbed lib v127

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file hal_tick.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
<> 144:ef7eb2e8f9f7 5 * @brief Initialization of HAL tick
<> 144:ef7eb2e8f9f7 6 ******************************************************************************
<> 144:ef7eb2e8f9f7 7 * @attention
<> 144:ef7eb2e8f9f7 8 *
<> 144:ef7eb2e8f9f7 9 * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 10 *
<> 144:ef7eb2e8f9f7 11 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 12 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 13 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 14 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 15 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 16 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 17 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 19 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 20 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 21 *
<> 144:ef7eb2e8f9f7 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 32 *
<> 144:ef7eb2e8f9f7 33 ******************************************************************************
<> 144:ef7eb2e8f9f7 34 */
<> 144:ef7eb2e8f9f7 35 #include "hal_tick.h"
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 TIM_HandleTypeDef TimMasterHandle;
<> 144:ef7eb2e8f9f7 38 uint32_t PreviousVal = 0;
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 void us_ticker_irq_handler(void);
<> 144:ef7eb2e8f9f7 41
<> 144:ef7eb2e8f9f7 42 void timer_irq_handler(void) {
<> 144:ef7eb2e8f9f7 43 // Channel 1 for mbed timeout
<> 144:ef7eb2e8f9f7 44 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) {
<> 144:ef7eb2e8f9f7 45 if (__HAL_TIM_GET_IT_SOURCE(&TimMasterHandle, TIM_IT_CC1) == SET) {
<> 144:ef7eb2e8f9f7 46 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
<> 144:ef7eb2e8f9f7 47 us_ticker_irq_handler();
<> 144:ef7eb2e8f9f7 48 }
<> 144:ef7eb2e8f9f7 49 }
<> 144:ef7eb2e8f9f7 50
<> 144:ef7eb2e8f9f7 51 // Channel 2 for HAL tick
<> 144:ef7eb2e8f9f7 52 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC2) == SET) {
<> 144:ef7eb2e8f9f7 53 if (__HAL_TIM_GET_IT_SOURCE(&TimMasterHandle, TIM_IT_CC2) == SET) {
<> 144:ef7eb2e8f9f7 54 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2);
<> 144:ef7eb2e8f9f7 55 uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle);
<> 144:ef7eb2e8f9f7 56 if ((val - PreviousVal) >= HAL_TICK_DELAY) {
<> 144:ef7eb2e8f9f7 57 // Increment HAL variable
<> 144:ef7eb2e8f9f7 58 HAL_IncTick();
<> 144:ef7eb2e8f9f7 59 // Prepare next interrupt
<> 144:ef7eb2e8f9f7 60 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY);
<> 144:ef7eb2e8f9f7 61 PreviousVal = val;
<> 144:ef7eb2e8f9f7 62 #if 0 // For DEBUG only
<> 144:ef7eb2e8f9f7 63 HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6);
<> 144:ef7eb2e8f9f7 64 #endif
<> 144:ef7eb2e8f9f7 65 }
<> 144:ef7eb2e8f9f7 66 }
<> 144:ef7eb2e8f9f7 67 }
<> 144:ef7eb2e8f9f7 68 }
<> 144:ef7eb2e8f9f7 69
<> 144:ef7eb2e8f9f7 70 // Reconfigure the HAL tick using a standard timer instead of systick.
<> 144:ef7eb2e8f9f7 71 HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
<> 148:21d94c44109e 72 RCC_ClkInitTypeDef RCC_ClkInitStruct;
<> 148:21d94c44109e 73 uint32_t PclkFreq;
<> 148:21d94c44109e 74
<> 148:21d94c44109e 75 // Get clock configuration
<> 148:21d94c44109e 76 // Note: PclkFreq contains here the Latency (not used after)
<> 148:21d94c44109e 77 HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &PclkFreq);
<> 148:21d94c44109e 78
<> 148:21d94c44109e 79 // Get TIM5 clock value
<> 148:21d94c44109e 80 PclkFreq = HAL_RCC_GetPCLK1Freq();
<> 148:21d94c44109e 81
<> 144:ef7eb2e8f9f7 82 // Enable timer clock
<> 144:ef7eb2e8f9f7 83 TIM_MST_RCC;
<> 144:ef7eb2e8f9f7 84
<> 144:ef7eb2e8f9f7 85 // Reset timer
<> 144:ef7eb2e8f9f7 86 TIM_MST_RESET_ON;
<> 144:ef7eb2e8f9f7 87 TIM_MST_RESET_OFF;
<> 144:ef7eb2e8f9f7 88
<> 144:ef7eb2e8f9f7 89 // Configure time base
<> 144:ef7eb2e8f9f7 90 TimMasterHandle.Instance = TIM_MST;
<> 144:ef7eb2e8f9f7 91 TimMasterHandle.Init.Period = 0xFFFFFFFF;
<> 148:21d94c44109e 92
<> 148:21d94c44109e 93 // TIMxCLK = PCLKx when the APB prescaler = 1 else TIMxCLK = 2 * PCLKx
<> 148:21d94c44109e 94 if (RCC_ClkInitStruct.APB1CLKDivider == RCC_HCLK_DIV1)
<> 148:21d94c44109e 95 TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq) / 1000000) - 1; // 1 us tick
<> 148:21d94c44109e 96 else
<> 148:21d94c44109e 97 TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq * 2) / 1000000) - 1; // 1 us tick
<> 148:21d94c44109e 98
<> 148:21d94c44109e 99 TimMasterHandle.Init.ClockDivision = 0;
<> 144:ef7eb2e8f9f7 100 TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
<> 144:ef7eb2e8f9f7 101 TimMasterHandle.Init.RepetitionCounter = 0;
<> 144:ef7eb2e8f9f7 102 HAL_TIM_OC_Init(&TimMasterHandle);
<> 144:ef7eb2e8f9f7 103
<> 144:ef7eb2e8f9f7 104 NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler);
<> 144:ef7eb2e8f9f7 105 NVIC_EnableIRQ(TIM_MST_IRQ);
<> 144:ef7eb2e8f9f7 106
<> 144:ef7eb2e8f9f7 107 // Channel 1 for mbed timeout
<> 144:ef7eb2e8f9f7 108 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
<> 144:ef7eb2e8f9f7 109
<> 144:ef7eb2e8f9f7 110 // Channel 2 for HAL tick
<> 144:ef7eb2e8f9f7 111 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2);
<> 144:ef7eb2e8f9f7 112 PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle);
<> 144:ef7eb2e8f9f7 113 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY);
<> 144:ef7eb2e8f9f7 114 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
<> 144:ef7eb2e8f9f7 115
<> 144:ef7eb2e8f9f7 116 #if 0 // For DEBUG only
<> 144:ef7eb2e8f9f7 117 __GPIOB_CLK_ENABLE();
<> 144:ef7eb2e8f9f7 118 GPIO_InitTypeDef GPIO_InitStruct;
<> 144:ef7eb2e8f9f7 119 GPIO_InitStruct.Pin = GPIO_PIN_6;
<> 144:ef7eb2e8f9f7 120 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
<> 144:ef7eb2e8f9f7 121 GPIO_InitStruct.Pull = GPIO_PULLUP;
<> 144:ef7eb2e8f9f7 122 GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
<> 144:ef7eb2e8f9f7 123 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
<> 144:ef7eb2e8f9f7 124 #endif
<> 144:ef7eb2e8f9f7 125
<> 144:ef7eb2e8f9f7 126 return HAL_OK;
<> 144:ef7eb2e8f9f7 127 }
<> 144:ef7eb2e8f9f7 128
<> 144:ef7eb2e8f9f7 129 void HAL_SuspendTick(void)
<> 144:ef7eb2e8f9f7 130 {
<> 144:ef7eb2e8f9f7 131 TimMasterHandle.Instance = TIM_MST;
<> 144:ef7eb2e8f9f7 132
<> 144:ef7eb2e8f9f7 133 // Disable HAL tick and us_ticker update interrupts (used for 32 bit counter)
<> 144:ef7eb2e8f9f7 134 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC2);
<> 144:ef7eb2e8f9f7 135 }
<> 144:ef7eb2e8f9f7 136
<> 144:ef7eb2e8f9f7 137 void HAL_ResumeTick(void)
<> 144:ef7eb2e8f9f7 138 {
<> 144:ef7eb2e8f9f7 139 TimMasterHandle.Instance = TIM_MST;
<> 144:ef7eb2e8f9f7 140
<> 144:ef7eb2e8f9f7 141 // Enable HAL tick and us_ticker update interrupts (used for 32 bit counter)
<> 144:ef7eb2e8f9f7 142 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
<> 144:ef7eb2e8f9f7 143 }
<> 144:ef7eb2e8f9f7 144 /**
<> 144:ef7eb2e8f9f7 145 * @}
<> 144:ef7eb2e8f9f7 146 */
<> 144:ef7eb2e8f9f7 147
<> 144:ef7eb2e8f9f7 148 /**
<> 144:ef7eb2e8f9f7 149 * @}
<> 144:ef7eb2e8f9f7 150 */
<> 144:ef7eb2e8f9f7 151
<> 144:ef7eb2e8f9f7 152 /**
<> 144:ef7eb2e8f9f7 153 * @}
<> 144:ef7eb2e8f9f7 154 */
<> 144:ef7eb2e8f9f7 155 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/