Fawwaz Nadzmy / mbed-STM

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targets/cmsis/TARGET_STM/TARGET_STM32F1/TARGET_BLUEPILL_F103C8/hal_tick.c@144:ef7eb2e8f9f7, 2016-09-02 (annotated)

Committer:
<>
Date:
Fri Sep 02 15:07:44 2016 +0100
Revision:
144:ef7eb2e8f9f7
This updates the lib to the mbed lib v125

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 2016 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 void set_compare(uint16_t count);
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 extern volatile uint32_t SlaveCounter;
<> 144:ef7eb2e8f9f7 44 extern volatile uint32_t oc_int_part;
<> 144:ef7eb2e8f9f7 45 extern volatile uint16_t oc_rem_part;
<> 144:ef7eb2e8f9f7 46 extern volatile uint16_t cnt_val;
<> 144:ef7eb2e8f9f7 47
<> 144:ef7eb2e8f9f7 48 void timer_irq_handler(void) {
<> 144:ef7eb2e8f9f7 49 cnt_val = TIM_MST->CNT;
<> 144:ef7eb2e8f9f7 50
<> 144:ef7eb2e8f9f7 51 TimMasterHandle.Instance = TIM_MST;
<> 144:ef7eb2e8f9f7 52
<> 144:ef7eb2e8f9f7 53 // Clear Update interrupt flag
<> 144:ef7eb2e8f9f7 54 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE) == SET) {
<> 144:ef7eb2e8f9f7 55 if (__HAL_TIM_GET_IT_SOURCE(&TimMasterHandle, TIM_IT_UPDATE) == SET) {
<> 144:ef7eb2e8f9f7 56 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_UPDATE);
<> 144:ef7eb2e8f9f7 57 SlaveCounter++;
<> 144:ef7eb2e8f9f7 58 }
<> 144:ef7eb2e8f9f7 59 }
<> 144:ef7eb2e8f9f7 60
<> 144:ef7eb2e8f9f7 61 // Channel 1 for mbed timeout
<> 144:ef7eb2e8f9f7 62 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) {
<> 144:ef7eb2e8f9f7 63 if (__HAL_TIM_GET_IT_SOURCE(&TimMasterHandle, TIM_IT_CC1) == SET) {
<> 144:ef7eb2e8f9f7 64 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
<> 144:ef7eb2e8f9f7 65 if (oc_rem_part > 0) {
<> 144:ef7eb2e8f9f7 66 set_compare(oc_rem_part); // Finish the remaining time left
<> 144:ef7eb2e8f9f7 67 oc_rem_part = 0;
<> 144:ef7eb2e8f9f7 68 } else {
<> 144:ef7eb2e8f9f7 69 if (oc_int_part > 0) {
<> 144:ef7eb2e8f9f7 70 set_compare(0xFFFF);
<> 144:ef7eb2e8f9f7 71 oc_rem_part = cnt_val; // To finish the counter loop the next time
<> 144:ef7eb2e8f9f7 72 oc_int_part--;
<> 144:ef7eb2e8f9f7 73 } else {
<> 144:ef7eb2e8f9f7 74 us_ticker_irq_handler();
<> 144:ef7eb2e8f9f7 75 }
<> 144:ef7eb2e8f9f7 76 }
<> 144:ef7eb2e8f9f7 77 }
<> 144:ef7eb2e8f9f7 78 }
<> 144:ef7eb2e8f9f7 79
<> 144:ef7eb2e8f9f7 80 // Channel 2 for HAL tick
<> 144:ef7eb2e8f9f7 81 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC2) == SET) {
<> 144:ef7eb2e8f9f7 82 if (__HAL_TIM_GET_IT_SOURCE(&TimMasterHandle, TIM_IT_CC2) == SET) {
<> 144:ef7eb2e8f9f7 83 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2);
<> 144:ef7eb2e8f9f7 84 uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle);
<> 144:ef7eb2e8f9f7 85 if ((val - PreviousVal) >= HAL_TICK_DELAY) {
<> 144:ef7eb2e8f9f7 86 // Increment HAL variable
<> 144:ef7eb2e8f9f7 87 HAL_IncTick();
<> 144:ef7eb2e8f9f7 88 // Prepare next interrupt
<> 144:ef7eb2e8f9f7 89 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY);
<> 144:ef7eb2e8f9f7 90 PreviousVal = val;
<> 144:ef7eb2e8f9f7 91 }
<> 144:ef7eb2e8f9f7 92 }
<> 144:ef7eb2e8f9f7 93 }
<> 144:ef7eb2e8f9f7 94 }
<> 144:ef7eb2e8f9f7 95
<> 144:ef7eb2e8f9f7 96 // Reconfigure the HAL tick using a standard timer instead of systick.
<> 144:ef7eb2e8f9f7 97 HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
<> 144:ef7eb2e8f9f7 98 // Enable timer clock
<> 144:ef7eb2e8f9f7 99 TIM_MST_RCC;
<> 144:ef7eb2e8f9f7 100
<> 144:ef7eb2e8f9f7 101 // Reset timer
<> 144:ef7eb2e8f9f7 102 TIM_MST_RESET_ON;
<> 144:ef7eb2e8f9f7 103 TIM_MST_RESET_OFF;
<> 144:ef7eb2e8f9f7 104
<> 144:ef7eb2e8f9f7 105 // Update the SystemCoreClock variable
<> 144:ef7eb2e8f9f7 106 SystemCoreClockUpdate();
<> 144:ef7eb2e8f9f7 107
<> 144:ef7eb2e8f9f7 108 // Configure time base
<> 144:ef7eb2e8f9f7 109 TimMasterHandle.Instance = TIM_MST;
<> 144:ef7eb2e8f9f7 110 TimMasterHandle.Init.Period = 0xFFFFFFFF;
<> 144:ef7eb2e8f9f7 111 TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 us tick
<> 144:ef7eb2e8f9f7 112 TimMasterHandle.Init.ClockDivision = 0;
<> 144:ef7eb2e8f9f7 113 TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
<> 144:ef7eb2e8f9f7 114 HAL_TIM_Base_Init(&TimMasterHandle);
<> 144:ef7eb2e8f9f7 115
<> 144:ef7eb2e8f9f7 116 // Configure output compare channel 1 for mbed timeout (enabled later when used)
<> 144:ef7eb2e8f9f7 117 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
<> 144:ef7eb2e8f9f7 118
<> 144:ef7eb2e8f9f7 119 // Configure output compare channel 2 for HAL tick
<> 144:ef7eb2e8f9f7 120 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2);
<> 144:ef7eb2e8f9f7 121 PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle);
<> 144:ef7eb2e8f9f7 122 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY);
<> 144:ef7eb2e8f9f7 123
<> 144:ef7eb2e8f9f7 124 // Configure interrupts
<> 144:ef7eb2e8f9f7 125 // Update interrupt used for 32-bit counter
<> 144:ef7eb2e8f9f7 126 // Output compare channel 1 interrupt for mbed timeout
<> 144:ef7eb2e8f9f7 127 // Output compare channel 2 interrupt for HAL tick
<> 144:ef7eb2e8f9f7 128 NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler);
<> 144:ef7eb2e8f9f7 129 NVIC_EnableIRQ(TIM_MST_IRQ);
<> 144:ef7eb2e8f9f7 130
<> 144:ef7eb2e8f9f7 131 // Enable interrupts
<> 144:ef7eb2e8f9f7 132 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_UPDATE); // For 32-bit counter
<> 144:ef7eb2e8f9f7 133 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2); // For HAL tick
<> 144:ef7eb2e8f9f7 134
<> 144:ef7eb2e8f9f7 135 // Enable timer
<> 144:ef7eb2e8f9f7 136 HAL_TIM_Base_Start(&TimMasterHandle);
<> 144:ef7eb2e8f9f7 137
<> 144:ef7eb2e8f9f7 138 return HAL_OK;
<> 144:ef7eb2e8f9f7 139 }
<> 144:ef7eb2e8f9f7 140
<> 144:ef7eb2e8f9f7 141 void HAL_SuspendTick(void) {
<> 144:ef7eb2e8f9f7 142 TimMasterHandle.Instance = TIM_MST;
<> 144:ef7eb2e8f9f7 143
<> 144:ef7eb2e8f9f7 144 // Disable HAL tick and us_ticker update interrupts (used for 32 bit counter)
<> 144:ef7eb2e8f9f7 145 __HAL_TIM_DISABLE_IT(&TimMasterHandle, (TIM_IT_CC2 | TIM_IT_UPDATE));
<> 144:ef7eb2e8f9f7 146 }
<> 144:ef7eb2e8f9f7 147
<> 144:ef7eb2e8f9f7 148 void HAL_ResumeTick(void) {
<> 144:ef7eb2e8f9f7 149 TimMasterHandle.Instance = TIM_MST;
<> 144:ef7eb2e8f9f7 150
<> 144:ef7eb2e8f9f7 151 // Enable HAL tick and us_ticker update interrupts (used for 32 bit counter)
<> 144:ef7eb2e8f9f7 152 __HAL_TIM_ENABLE_IT(&TimMasterHandle, (TIM_IT_CC2 | TIM_IT_UPDATE));
<> 144:ef7eb2e8f9f7 153 }
<> 144:ef7eb2e8f9f7 154 /**
<> 144:ef7eb2e8f9f7 155 * @}
<> 144:ef7eb2e8f9f7 156 */
<> 144:ef7eb2e8f9f7 157
<> 144:ef7eb2e8f9f7 158 /**
<> 144:ef7eb2e8f9f7 159 * @}
<> 144:ef7eb2e8f9f7 160 */
<> 144:ef7eb2e8f9f7 161
<> 144:ef7eb2e8f9f7 162 /**
<> 144:ef7eb2e8f9f7 163 * @}
<> 144:ef7eb2e8f9f7 164 */
<> 144:ef7eb2e8f9f7 165 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/