mbed library sources
Fork of mbed-src by
targets/cmsis/TARGET_STM/TARGET_STM32F0/TARGET_NUCLEO_F070RB/hal_tick.c@441:d2c15dda23c1, 2015-01-06 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Jan 06 16:15:36 2015 +0000
- Revision:
- 441:d2c15dda23c1
Synchronized with git revision 245a60b29caabb42eabdd19658eeac7c3f68313b
Full URL: https://github.com/mbedmicro/mbed/commit/245a60b29caabb42eabdd19658eeac7c3f68313b/
NUCLEO_F072RB/F091RC - adding target to rtos lib and exporter for coide and gcc_arm
Who changed what in which revision?
User | Revision | Line number | New 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>© 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 | 441:d2c15dda23c1 | 92 | #if 1 // 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 | 441:d2c15dda23c1 | 143 | #if 1 // 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****/ |