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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_STM32F0/TARGET_NUCLEO_F070RB/hal_tick.c@599:efb83a170500, 2015-07-31 (annotated)

Committer:
mbed_official
Date:
Fri Jul 31 14:00:09 2015 +0100
Revision:
599:efb83a170500
Parent:
441:d2c15dda23c1 
Synchronized with git revision 5b1dc60c03fa1b3a5d082ac137d15d6584f7fe1a



Full URL: https://github.com/mbedmicro/mbed/commit/5b1dc60c03fa1b3a5d082ac137d15d6584f7fe1a/



MAXWSNENV, MAX32600MBED - Fixing pwm array search.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 441:d2c15dda23c1 1 /**
mbed_official 441:d2c15dda23c1 2 ******************************************************************************
mbed_official 441:d2c15dda23c1 3 * @file hal_tick.c
mbed_official 441:d2c15dda23c1 4 * @author MCD Application Team
mbed_official 441:d2c15dda23c1 5 * @brief Initialization of HAL tick
mbed_official 441:d2c15dda23c1 6 ******************************************************************************
mbed_official 441:d2c15dda23c1 7 * @attention
mbed_official 441:d2c15dda23c1 8 *
mbed_official 441:d2c15dda23c1 9 * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
mbed_official 441:d2c15dda23c1 10 *
mbed_official 441:d2c15dda23c1 11 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 441:d2c15dda23c1 12 * are permitted provided that the following conditions are met:
mbed_official 441:d2c15dda23c1 13 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 441:d2c15dda23c1 14 * this list of conditions and the following disclaimer.
mbed_official 441:d2c15dda23c1 15 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 441:d2c15dda23c1 16 * this list of conditions and the following disclaimer in the documentation
mbed_official 441:d2c15dda23c1 17 * and/or other materials provided with the distribution.
mbed_official 441:d2c15dda23c1 18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 441:d2c15dda23c1 19 * may be used to endorse or promote products derived from this software
mbed_official 441:d2c15dda23c1 20 * without specific prior written permission.
mbed_official 441:d2c15dda23c1 21 *
mbed_official 441:d2c15dda23c1 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 441:d2c15dda23c1 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 441:d2c15dda23c1 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 441:d2c15dda23c1 25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 441:d2c15dda23c1 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 441:d2c15dda23c1 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 441:d2c15dda23c1 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 441:d2c15dda23c1 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 441:d2c15dda23c1 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 441:d2c15dda23c1 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 441:d2c15dda23c1 32 *
mbed_official 441:d2c15dda23c1 33 ******************************************************************************
mbed_official 441:d2c15dda23c1 34 */
mbed_official 441:d2c15dda23c1 35 #include "hal_tick.h"
mbed_official 441:d2c15dda23c1 36
mbed_official 441:d2c15dda23c1 37 TIM_HandleTypeDef TimMasterHandle;
mbed_official 441:d2c15dda23c1 38 uint32_t PreviousVal = 0;
mbed_official 441:d2c15dda23c1 39
mbed_official 441:d2c15dda23c1 40 void us_ticker_irq_handler(void);
mbed_official 441:d2c15dda23c1 41 void set_compare(uint16_t count);
mbed_official 441:d2c15dda23c1 42
mbed_official 441:d2c15dda23c1 43 extern volatile uint32_t SlaveCounter;
mbed_official 441:d2c15dda23c1 44 extern volatile uint32_t oc_int_part;
mbed_official 441:d2c15dda23c1 45 extern volatile uint16_t oc_rem_part;
mbed_official 441:d2c15dda23c1 46
mbed_official 441:d2c15dda23c1 47 // Used to increment the slave counter
mbed_official 441:d2c15dda23c1 48 void timer_update_irq_handler(void)
mbed_official 441:d2c15dda23c1 49 {
mbed_official 441:d2c15dda23c1 50 TimMasterHandle.Instance = TIM_MST;
mbed_official 441:d2c15dda23c1 51
mbed_official 441:d2c15dda23c1 52 // Clear Update interrupt flag
mbed_official 441:d2c15dda23c1 53 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE) == SET) {
mbed_official 441:d2c15dda23c1 54 __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE);
mbed_official 441:d2c15dda23c1 55 SlaveCounter++;
mbed_official 441:d2c15dda23c1 56 }
mbed_official 441:d2c15dda23c1 57 }
mbed_official 441:d2c15dda23c1 58
mbed_official 441:d2c15dda23c1 59 // Used for mbed timeout (channel 1) and HAL tick (channel 2)
mbed_official 441:d2c15dda23c1 60 void timer_oc_irq_handler(void)
mbed_official 441:d2c15dda23c1 61 {
mbed_official 441:d2c15dda23c1 62 uint16_t cval = TIM_MST->CNT;
mbed_official 441:d2c15dda23c1 63 TimMasterHandle.Instance = TIM_MST;
mbed_official 441:d2c15dda23c1 64
mbed_official 441:d2c15dda23c1 65 // Channel 1 for mbed timeout
mbed_official 441:d2c15dda23c1 66 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) {
mbed_official 441:d2c15dda23c1 67 __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1);
mbed_official 441:d2c15dda23c1 68 if (oc_rem_part > 0) {
mbed_official 441:d2c15dda23c1 69 set_compare(oc_rem_part); // Finish the remaining time left
mbed_official 441:d2c15dda23c1 70 oc_rem_part = 0;
mbed_official 441:d2c15dda23c1 71 } else {
mbed_official 441:d2c15dda23c1 72 if (oc_int_part > 0) {
mbed_official 441:d2c15dda23c1 73 set_compare(0xFFFF);
mbed_official 441:d2c15dda23c1 74 oc_rem_part = cval; // To finish the counter loop the next time
mbed_official 441:d2c15dda23c1 75 oc_int_part--;
mbed_official 441:d2c15dda23c1 76 } else {
mbed_official 441:d2c15dda23c1 77 us_ticker_irq_handler();
mbed_official 441:d2c15dda23c1 78 }
mbed_official 441:d2c15dda23c1 79 }
mbed_official 441:d2c15dda23c1 80 }
mbed_official 441:d2c15dda23c1 81
mbed_official 441:d2c15dda23c1 82 // Channel 2 for HAL tick
mbed_official 441:d2c15dda23c1 83 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC2) == SET) {
mbed_official 441:d2c15dda23c1 84 __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC2);
mbed_official 441:d2c15dda23c1 85 uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle);
mbed_official 441:d2c15dda23c1 86 if ((val - PreviousVal) >= HAL_TICK_DELAY) {
mbed_official 441:d2c15dda23c1 87 // Increment HAL variable
mbed_official 441:d2c15dda23c1 88 HAL_IncTick();
mbed_official 441:d2c15dda23c1 89 // Prepare next interrupt
mbed_official 441:d2c15dda23c1 90 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY);
mbed_official 441:d2c15dda23c1 91 PreviousVal = val;
mbed_official 599:efb83a170500 92 #if 0 // For DEBUG only
mbed_official 441:d2c15dda23c1 93 HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6);
mbed_official 441:d2c15dda23c1 94 #endif
mbed_official 441:d2c15dda23c1 95 }
mbed_official 441:d2c15dda23c1 96 }
mbed_official 441:d2c15dda23c1 97 }
mbed_official 441:d2c15dda23c1 98
mbed_official 441:d2c15dda23c1 99 // Reconfigure the HAL tick using a standard timer instead of systick.
mbed_official 441:d2c15dda23c1 100 HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
mbed_official 441:d2c15dda23c1 101 // Enable timer clock
mbed_official 441:d2c15dda23c1 102 TIM_MST_RCC;
mbed_official 441:d2c15dda23c1 103
mbed_official 441:d2c15dda23c1 104 // Reset timer
mbed_official 441:d2c15dda23c1 105 TIM_MST_RESET_ON;
mbed_official 441:d2c15dda23c1 106 TIM_MST_RESET_OFF;
mbed_official 441:d2c15dda23c1 107
mbed_official 441:d2c15dda23c1 108 // Update the SystemCoreClock variable
mbed_official 441:d2c15dda23c1 109 SystemCoreClockUpdate();
mbed_official 441:d2c15dda23c1 110
mbed_official 441:d2c15dda23c1 111 // Configure time base
mbed_official 441:d2c15dda23c1 112 TimMasterHandle.Instance = TIM_MST;
mbed_official 441:d2c15dda23c1 113 TimMasterHandle.Init.Period = 0xFFFF;
mbed_official 441:d2c15dda23c1 114 TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 us tick
mbed_official 441:d2c15dda23c1 115 TimMasterHandle.Init.ClockDivision = 0;
mbed_official 441:d2c15dda23c1 116 TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
mbed_official 441:d2c15dda23c1 117 HAL_TIM_Base_Init(&TimMasterHandle);
mbed_official 441:d2c15dda23c1 118
mbed_official 441:d2c15dda23c1 119 // Configure output compare channel 1 for mbed timeout (enabled later when used)
mbed_official 441:d2c15dda23c1 120 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
mbed_official 441:d2c15dda23c1 121
mbed_official 441:d2c15dda23c1 122 // Configure output compare channel 2 for HAL tick
mbed_official 441:d2c15dda23c1 123 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2);
mbed_official 441:d2c15dda23c1 124 PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle);
mbed_official 441:d2c15dda23c1 125 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY);
mbed_official 441:d2c15dda23c1 126
mbed_official 441:d2c15dda23c1 127 // Configure interrupts
mbed_official 441:d2c15dda23c1 128 // Update interrupt used for 32-bit counter
mbed_official 441:d2c15dda23c1 129 // Output compare channel 1 interrupt for mbed timeout
mbed_official 441:d2c15dda23c1 130 // Output compare channel 2 interrupt for HAL tick
mbed_official 441:d2c15dda23c1 131 NVIC_SetVector(TIM_MST_UP_IRQ, (uint32_t)timer_update_irq_handler);
mbed_official 441:d2c15dda23c1 132 NVIC_EnableIRQ(TIM_MST_UP_IRQ);
mbed_official 441:d2c15dda23c1 133 NVIC_SetVector(TIM_MST_OC_IRQ, (uint32_t)timer_oc_irq_handler);
mbed_official 441:d2c15dda23c1 134 NVIC_EnableIRQ(TIM_MST_OC_IRQ);
mbed_official 441:d2c15dda23c1 135
mbed_official 441:d2c15dda23c1 136 // Enable interrupts
mbed_official 441:d2c15dda23c1 137 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_UPDATE); // For 32-bit counter
mbed_official 441:d2c15dda23c1 138 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2); // For HAL tick
mbed_official 441:d2c15dda23c1 139
mbed_official 441:d2c15dda23c1 140 // Enable timer
mbed_official 441:d2c15dda23c1 141 HAL_TIM_Base_Start(&TimMasterHandle);
mbed_official 441:d2c15dda23c1 142
mbed_official 599:efb83a170500 143 #if 0 // For DEBUG only
mbed_official 441:d2c15dda23c1 144 __GPIOB_CLK_ENABLE();
mbed_official 441:d2c15dda23c1 145 GPIO_InitTypeDef GPIO_InitStruct;
mbed_official 441:d2c15dda23c1 146 GPIO_InitStruct.Pin = GPIO_PIN_6;
mbed_official 441:d2c15dda23c1 147 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
mbed_official 441:d2c15dda23c1 148 GPIO_InitStruct.Pull = GPIO_PULLUP;
mbed_official 441:d2c15dda23c1 149 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
mbed_official 441:d2c15dda23c1 150 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
mbed_official 441:d2c15dda23c1 151 #endif
mbed_official 441:d2c15dda23c1 152
mbed_official 441:d2c15dda23c1 153 return HAL_OK;
mbed_official 441:d2c15dda23c1 154 }
mbed_official 441:d2c15dda23c1 155
mbed_official 441:d2c15dda23c1 156 /**
mbed_official 441:d2c15dda23c1 157 * @}
mbed_official 441:d2c15dda23c1 158 */
mbed_official 441:d2c15dda23c1 159
mbed_official 441:d2c15dda23c1 160 /**
mbed_official 441:d2c15dda23c1 161 * @}
mbed_official 441:d2c15dda23c1 162 */
mbed_official 441:d2c15dda23c1 163
mbed_official 441:d2c15dda23c1 164 /**
mbed_official 441:d2c15dda23c1 165 * @}
mbed_official 441:d2c15dda23c1 166 */
mbed_official 441:d2c15dda23c1 167 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/