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targets/TARGET_STM/TARGET_STM32F0/us_ticker.c@149:156823d33999, 2016-10-28 (annotated)
- Committer:
- <>
- Date:
- Fri Oct 28 11:17:30 2016 +0100
- Revision:
- 149:156823d33999
- Parent:
- targets/hal/TARGET_STM/TARGET_STM32F0/us_ticker.c@144:ef7eb2e8f9f7
This updates the lib to the mbed lib v128
NOTE: This release includes a restructuring of the file and directory locations and thus some
include paths in your code may need updating accordingly.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /* mbed Microcontroller Library |
<> | 144:ef7eb2e8f9f7 | 2 | * Copyright (c) 2014, STMicroelectronics |
<> | 144:ef7eb2e8f9f7 | 3 | * All rights reserved. |
<> | 144:ef7eb2e8f9f7 | 4 | * |
<> | 144:ef7eb2e8f9f7 | 5 | * Redistribution and use in source and binary forms, with or without |
<> | 144:ef7eb2e8f9f7 | 6 | * modification, are permitted provided that the following conditions are met: |
<> | 144:ef7eb2e8f9f7 | 7 | * |
<> | 144:ef7eb2e8f9f7 | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
<> | 144:ef7eb2e8f9f7 | 9 | * this list of conditions and the following disclaimer. |
<> | 144:ef7eb2e8f9f7 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
<> | 144:ef7eb2e8f9f7 | 11 | * this list of conditions and the following disclaimer in the documentation |
<> | 144:ef7eb2e8f9f7 | 12 | * and/or other materials provided with the distribution. |
<> | 144:ef7eb2e8f9f7 | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
<> | 144:ef7eb2e8f9f7 | 14 | * may be used to endorse or promote products derived from this software |
<> | 144:ef7eb2e8f9f7 | 15 | * without specific prior written permission. |
<> | 144:ef7eb2e8f9f7 | 16 | * |
<> | 144:ef7eb2e8f9f7 | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
<> | 144:ef7eb2e8f9f7 | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
<> | 144:ef7eb2e8f9f7 | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
<> | 144:ef7eb2e8f9f7 | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
<> | 144:ef7eb2e8f9f7 | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
<> | 144:ef7eb2e8f9f7 | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
<> | 144:ef7eb2e8f9f7 | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
<> | 144:ef7eb2e8f9f7 | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
<> | 144:ef7eb2e8f9f7 | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
<> | 144:ef7eb2e8f9f7 | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
<> | 144:ef7eb2e8f9f7 | 27 | */ |
<> | 144:ef7eb2e8f9f7 | 28 | #include <stddef.h> |
<> | 144:ef7eb2e8f9f7 | 29 | #include "us_ticker_api.h" |
<> | 144:ef7eb2e8f9f7 | 30 | #include "PeripheralNames.h" |
<> | 144:ef7eb2e8f9f7 | 31 | |
<> | 144:ef7eb2e8f9f7 | 32 | |
<> | 144:ef7eb2e8f9f7 | 33 | #if defined(TARGET_STM32F030R8) || defined(TARGET_STM32F070RB) |
<> | 144:ef7eb2e8f9f7 | 34 | |
<> | 144:ef7eb2e8f9f7 | 35 | // Timer selection |
<> | 144:ef7eb2e8f9f7 | 36 | #define TIM_MST TIM1 |
<> | 144:ef7eb2e8f9f7 | 37 | |
<> | 144:ef7eb2e8f9f7 | 38 | static TIM_HandleTypeDef TimMasterHandle; |
<> | 144:ef7eb2e8f9f7 | 39 | static int us_ticker_inited = 0; |
<> | 144:ef7eb2e8f9f7 | 40 | |
<> | 144:ef7eb2e8f9f7 | 41 | volatile uint32_t SlaveCounter = 0; |
<> | 144:ef7eb2e8f9f7 | 42 | volatile uint32_t oc_int_part = 0; |
<> | 144:ef7eb2e8f9f7 | 43 | volatile uint16_t oc_rem_part = 0; |
<> | 144:ef7eb2e8f9f7 | 44 | |
<> | 144:ef7eb2e8f9f7 | 45 | void set_compare(uint16_t count) { |
<> | 144:ef7eb2e8f9f7 | 46 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 47 | // Set new output compare value |
<> | 144:ef7eb2e8f9f7 | 48 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, count); |
<> | 144:ef7eb2e8f9f7 | 49 | // Enable IT |
<> | 144:ef7eb2e8f9f7 | 50 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 51 | } |
<> | 144:ef7eb2e8f9f7 | 52 | |
<> | 144:ef7eb2e8f9f7 | 53 | void us_ticker_init(void) { |
<> | 144:ef7eb2e8f9f7 | 54 | if (us_ticker_inited) return; |
<> | 144:ef7eb2e8f9f7 | 55 | us_ticker_inited = 1; |
<> | 144:ef7eb2e8f9f7 | 56 | |
<> | 144:ef7eb2e8f9f7 | 57 | HAL_InitTick(0); // The passed value is not used |
<> | 144:ef7eb2e8f9f7 | 58 | } |
<> | 144:ef7eb2e8f9f7 | 59 | |
<> | 144:ef7eb2e8f9f7 | 60 | uint32_t us_ticker_read() { |
<> | 144:ef7eb2e8f9f7 | 61 | uint32_t counter, counter2; |
<> | 144:ef7eb2e8f9f7 | 62 | if (!us_ticker_inited) us_ticker_init(); |
<> | 144:ef7eb2e8f9f7 | 63 | // A situation might appear when Master overflows right after Slave is read and before the |
<> | 144:ef7eb2e8f9f7 | 64 | // new (overflowed) value of Master is read. Which would make the code below consider the |
<> | 144:ef7eb2e8f9f7 | 65 | // previous (incorrect) value of Slave and the new value of Master, which would return a |
<> | 144:ef7eb2e8f9f7 | 66 | // value in the past. Avoid this by computing consecutive values of the timer until they |
<> | 144:ef7eb2e8f9f7 | 67 | // are properly ordered. |
<> | 144:ef7eb2e8f9f7 | 68 | counter = (uint32_t)(SlaveCounter << 16); |
<> | 144:ef7eb2e8f9f7 | 69 | counter += TIM_MST->CNT; |
<> | 144:ef7eb2e8f9f7 | 70 | while (1) { |
<> | 144:ef7eb2e8f9f7 | 71 | counter2 = (uint32_t)(SlaveCounter << 16); |
<> | 144:ef7eb2e8f9f7 | 72 | counter2 += TIM_MST->CNT; |
<> | 144:ef7eb2e8f9f7 | 73 | if (counter2 > counter) { |
<> | 144:ef7eb2e8f9f7 | 74 | break; |
<> | 144:ef7eb2e8f9f7 | 75 | } |
<> | 144:ef7eb2e8f9f7 | 76 | counter = counter2; |
<> | 144:ef7eb2e8f9f7 | 77 | } |
<> | 144:ef7eb2e8f9f7 | 78 | return counter2; |
<> | 144:ef7eb2e8f9f7 | 79 | } |
<> | 144:ef7eb2e8f9f7 | 80 | |
<> | 144:ef7eb2e8f9f7 | 81 | void us_ticker_set_interrupt(timestamp_t timestamp) { |
<> | 144:ef7eb2e8f9f7 | 82 | int delta = (int)((uint32_t)timestamp - us_ticker_read()); |
<> | 144:ef7eb2e8f9f7 | 83 | uint16_t cval = TIM_MST->CNT; |
<> | 144:ef7eb2e8f9f7 | 84 | |
<> | 144:ef7eb2e8f9f7 | 85 | if (delta <= 0) { // This event was in the past |
<> | 144:ef7eb2e8f9f7 | 86 | us_ticker_irq_handler(); |
<> | 144:ef7eb2e8f9f7 | 87 | } else { |
<> | 144:ef7eb2e8f9f7 | 88 | oc_int_part = (uint32_t)(delta >> 16); |
<> | 144:ef7eb2e8f9f7 | 89 | oc_rem_part = (uint16_t)(delta & 0xFFFF); |
<> | 144:ef7eb2e8f9f7 | 90 | if (oc_rem_part <= (0xFFFF - cval)) { |
<> | 144:ef7eb2e8f9f7 | 91 | set_compare(cval + oc_rem_part); |
<> | 144:ef7eb2e8f9f7 | 92 | oc_rem_part = 0; |
<> | 144:ef7eb2e8f9f7 | 93 | } else { |
<> | 144:ef7eb2e8f9f7 | 94 | set_compare(0xFFFF); |
<> | 144:ef7eb2e8f9f7 | 95 | oc_rem_part = oc_rem_part - (0xFFFF - cval); |
<> | 144:ef7eb2e8f9f7 | 96 | } |
<> | 144:ef7eb2e8f9f7 | 97 | } |
<> | 144:ef7eb2e8f9f7 | 98 | } |
<> | 144:ef7eb2e8f9f7 | 99 | |
<> | 144:ef7eb2e8f9f7 | 100 | void us_ticker_disable_interrupt(void) { |
<> | 144:ef7eb2e8f9f7 | 101 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 102 | __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 103 | } |
<> | 144:ef7eb2e8f9f7 | 104 | |
<> | 144:ef7eb2e8f9f7 | 105 | void us_ticker_clear_interrupt(void) { |
<> | 144:ef7eb2e8f9f7 | 106 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 107 | if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) { |
<> | 144:ef7eb2e8f9f7 | 108 | __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1); |
<> | 144:ef7eb2e8f9f7 | 109 | } |
<> | 144:ef7eb2e8f9f7 | 110 | } |
<> | 144:ef7eb2e8f9f7 | 111 | |
<> | 144:ef7eb2e8f9f7 | 112 | #elif defined (TARGET_STM32F051R8) |
<> | 144:ef7eb2e8f9f7 | 113 | |
<> | 144:ef7eb2e8f9f7 | 114 | // Timer selection: |
<> | 144:ef7eb2e8f9f7 | 115 | #define TIM_MST TIM1 |
<> | 144:ef7eb2e8f9f7 | 116 | #define TIM_MST_UP_IRQ TIM1_BRK_UP_TRG_COM_IRQn |
<> | 144:ef7eb2e8f9f7 | 117 | #define TIM_MST_OC_IRQ TIM1_CC_IRQn |
<> | 144:ef7eb2e8f9f7 | 118 | #define TIM_MST_RCC __TIM1_CLK_ENABLE() |
<> | 144:ef7eb2e8f9f7 | 119 | |
<> | 144:ef7eb2e8f9f7 | 120 | static TIM_HandleTypeDef TimMasterHandle; |
<> | 144:ef7eb2e8f9f7 | 121 | |
<> | 144:ef7eb2e8f9f7 | 122 | |
<> | 144:ef7eb2e8f9f7 | 123 | static int us_ticker_inited = 0; |
<> | 144:ef7eb2e8f9f7 | 124 | static volatile uint32_t SlaveCounter = 0; |
<> | 144:ef7eb2e8f9f7 | 125 | static volatile uint32_t oc_int_part = 0; |
<> | 144:ef7eb2e8f9f7 | 126 | static volatile uint16_t oc_rem_part = 0; |
<> | 144:ef7eb2e8f9f7 | 127 | |
<> | 144:ef7eb2e8f9f7 | 128 | void set_compare(uint16_t count) { |
<> | 144:ef7eb2e8f9f7 | 129 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 130 | |
<> | 144:ef7eb2e8f9f7 | 131 | // Set new output compare value |
<> | 144:ef7eb2e8f9f7 | 132 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, count); |
<> | 144:ef7eb2e8f9f7 | 133 | // Enable IT |
<> | 144:ef7eb2e8f9f7 | 134 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 135 | } |
<> | 144:ef7eb2e8f9f7 | 136 | |
<> | 144:ef7eb2e8f9f7 | 137 | // Used to increment the slave counter |
<> | 144:ef7eb2e8f9f7 | 138 | static void tim_update_irq_handler(void) { |
<> | 144:ef7eb2e8f9f7 | 139 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 140 | |
<> | 144:ef7eb2e8f9f7 | 141 | // Clear Update interrupt flag |
<> | 144:ef7eb2e8f9f7 | 142 | if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE) == SET) { |
<> | 144:ef7eb2e8f9f7 | 143 | __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE); |
<> | 144:ef7eb2e8f9f7 | 144 | SlaveCounter++; |
<> | 144:ef7eb2e8f9f7 | 145 | } |
<> | 144:ef7eb2e8f9f7 | 146 | } |
<> | 144:ef7eb2e8f9f7 | 147 | |
<> | 144:ef7eb2e8f9f7 | 148 | // Used by interrupt system |
<> | 144:ef7eb2e8f9f7 | 149 | static void tim_oc_irq_handler(void) { |
<> | 144:ef7eb2e8f9f7 | 150 | uint16_t cval = TIM_MST->CNT; |
<> | 144:ef7eb2e8f9f7 | 151 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 152 | |
<> | 144:ef7eb2e8f9f7 | 153 | // Clear CC1 interrupt flag |
<> | 144:ef7eb2e8f9f7 | 154 | if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) { |
<> | 144:ef7eb2e8f9f7 | 155 | __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1); |
<> | 144:ef7eb2e8f9f7 | 156 | } |
<> | 144:ef7eb2e8f9f7 | 157 | if (oc_rem_part > 0) { |
<> | 144:ef7eb2e8f9f7 | 158 | set_compare(oc_rem_part); // Finish the remaining time left |
<> | 144:ef7eb2e8f9f7 | 159 | oc_rem_part = 0; |
<> | 144:ef7eb2e8f9f7 | 160 | } else { |
<> | 144:ef7eb2e8f9f7 | 161 | if (oc_int_part > 0) { |
<> | 144:ef7eb2e8f9f7 | 162 | set_compare(0xFFFF); |
<> | 144:ef7eb2e8f9f7 | 163 | oc_rem_part = cval; // To finish the counter loop the next time |
<> | 144:ef7eb2e8f9f7 | 164 | oc_int_part--; |
<> | 144:ef7eb2e8f9f7 | 165 | } else { |
<> | 144:ef7eb2e8f9f7 | 166 | us_ticker_irq_handler(); |
<> | 144:ef7eb2e8f9f7 | 167 | } |
<> | 144:ef7eb2e8f9f7 | 168 | } |
<> | 144:ef7eb2e8f9f7 | 169 | |
<> | 144:ef7eb2e8f9f7 | 170 | } |
<> | 144:ef7eb2e8f9f7 | 171 | |
<> | 144:ef7eb2e8f9f7 | 172 | void us_ticker_init(void) { |
<> | 144:ef7eb2e8f9f7 | 173 | |
<> | 144:ef7eb2e8f9f7 | 174 | if (us_ticker_inited) return; |
<> | 144:ef7eb2e8f9f7 | 175 | us_ticker_inited = 1; |
<> | 144:ef7eb2e8f9f7 | 176 | |
<> | 144:ef7eb2e8f9f7 | 177 | // Enable timer clock |
<> | 144:ef7eb2e8f9f7 | 178 | TIM_MST_RCC; |
<> | 144:ef7eb2e8f9f7 | 179 | |
<> | 144:ef7eb2e8f9f7 | 180 | // Configure time base |
<> | 144:ef7eb2e8f9f7 | 181 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 182 | TimMasterHandle.Init.Period = 0xFFFF; |
<> | 144:ef7eb2e8f9f7 | 183 | TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 us tick |
<> | 144:ef7eb2e8f9f7 | 184 | TimMasterHandle.Init.ClockDivision = 0; |
<> | 144:ef7eb2e8f9f7 | 185 | TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP; |
<> | 144:ef7eb2e8f9f7 | 186 | HAL_TIM_Base_Init(&TimMasterHandle); |
<> | 144:ef7eb2e8f9f7 | 187 | |
<> | 144:ef7eb2e8f9f7 | 188 | // Configure interrupts |
<> | 144:ef7eb2e8f9f7 | 189 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_UPDATE); |
<> | 144:ef7eb2e8f9f7 | 190 | |
<> | 144:ef7eb2e8f9f7 | 191 | // Update interrupt used for 32-bit counter |
<> | 144:ef7eb2e8f9f7 | 192 | NVIC_SetVector(TIM_MST_UP_IRQ, (uint32_t)tim_update_irq_handler); |
<> | 144:ef7eb2e8f9f7 | 193 | NVIC_EnableIRQ(TIM_MST_UP_IRQ); |
<> | 144:ef7eb2e8f9f7 | 194 | |
<> | 144:ef7eb2e8f9f7 | 195 | // Output compare interrupt used for timeout feature |
<> | 144:ef7eb2e8f9f7 | 196 | NVIC_SetVector(TIM_MST_OC_IRQ, (uint32_t)tim_oc_irq_handler); |
<> | 144:ef7eb2e8f9f7 | 197 | NVIC_EnableIRQ(TIM_MST_OC_IRQ); |
<> | 144:ef7eb2e8f9f7 | 198 | |
<> | 144:ef7eb2e8f9f7 | 199 | // Enable timer |
<> | 144:ef7eb2e8f9f7 | 200 | HAL_TIM_Base_Start(&TimMasterHandle); |
<> | 144:ef7eb2e8f9f7 | 201 | } |
<> | 144:ef7eb2e8f9f7 | 202 | |
<> | 144:ef7eb2e8f9f7 | 203 | uint32_t us_ticker_read() { |
<> | 144:ef7eb2e8f9f7 | 204 | uint32_t counter, counter2; |
<> | 144:ef7eb2e8f9f7 | 205 | if (!us_ticker_inited) us_ticker_init(); |
<> | 144:ef7eb2e8f9f7 | 206 | // A situation might appear when Master overflows right after Slave is read and before the |
<> | 144:ef7eb2e8f9f7 | 207 | // new (overflowed) value of Master is read. Which would make the code below consider the |
<> | 144:ef7eb2e8f9f7 | 208 | // previous (incorrect) value of Slave and the new value of Master, which would return a |
<> | 144:ef7eb2e8f9f7 | 209 | // value in the past. Avoid this by computing consecutive values of the timer until they |
<> | 144:ef7eb2e8f9f7 | 210 | // are properly ordered. |
<> | 144:ef7eb2e8f9f7 | 211 | counter = (uint32_t)(SlaveCounter << 16); |
<> | 144:ef7eb2e8f9f7 | 212 | counter += TIM_MST->CNT; |
<> | 144:ef7eb2e8f9f7 | 213 | while (1) { |
<> | 144:ef7eb2e8f9f7 | 214 | counter2 = (uint32_t)(SlaveCounter << 16); |
<> | 144:ef7eb2e8f9f7 | 215 | counter2 += TIM_MST->CNT; |
<> | 144:ef7eb2e8f9f7 | 216 | if (counter2 > counter) { |
<> | 144:ef7eb2e8f9f7 | 217 | break; |
<> | 144:ef7eb2e8f9f7 | 218 | } |
<> | 144:ef7eb2e8f9f7 | 219 | counter = counter2; |
<> | 144:ef7eb2e8f9f7 | 220 | } |
<> | 144:ef7eb2e8f9f7 | 221 | return counter2; |
<> | 144:ef7eb2e8f9f7 | 222 | } |
<> | 144:ef7eb2e8f9f7 | 223 | |
<> | 144:ef7eb2e8f9f7 | 224 | void us_ticker_set_interrupt(timestamp_t timestamp) { |
<> | 144:ef7eb2e8f9f7 | 225 | int delta = (int)((uint32_t)timestamp - us_ticker_read()); |
<> | 144:ef7eb2e8f9f7 | 226 | uint16_t cval = TIM_MST->CNT; |
<> | 144:ef7eb2e8f9f7 | 227 | |
<> | 144:ef7eb2e8f9f7 | 228 | if (delta <= 0) { // This event was in the past |
<> | 144:ef7eb2e8f9f7 | 229 | us_ticker_irq_handler(); |
<> | 144:ef7eb2e8f9f7 | 230 | } else { |
<> | 144:ef7eb2e8f9f7 | 231 | oc_int_part = (uint32_t)(delta >> 16); |
<> | 144:ef7eb2e8f9f7 | 232 | oc_rem_part = (uint16_t)(delta & 0xFFFF); |
<> | 144:ef7eb2e8f9f7 | 233 | if (oc_rem_part <= (0xFFFF - cval)) { |
<> | 144:ef7eb2e8f9f7 | 234 | set_compare(cval + oc_rem_part); |
<> | 144:ef7eb2e8f9f7 | 235 | oc_rem_part = 0; |
<> | 144:ef7eb2e8f9f7 | 236 | } else { |
<> | 144:ef7eb2e8f9f7 | 237 | set_compare(0xFFFF); |
<> | 144:ef7eb2e8f9f7 | 238 | oc_rem_part = oc_rem_part - (0xFFFF - cval); |
<> | 144:ef7eb2e8f9f7 | 239 | } |
<> | 144:ef7eb2e8f9f7 | 240 | } |
<> | 144:ef7eb2e8f9f7 | 241 | } |
<> | 144:ef7eb2e8f9f7 | 242 | |
<> | 144:ef7eb2e8f9f7 | 243 | void us_ticker_disable_interrupt(void) { |
<> | 144:ef7eb2e8f9f7 | 244 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 245 | __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 246 | } |
<> | 144:ef7eb2e8f9f7 | 247 | |
<> | 144:ef7eb2e8f9f7 | 248 | void us_ticker_clear_interrupt(void) { |
<> | 144:ef7eb2e8f9f7 | 249 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 250 | if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) { |
<> | 144:ef7eb2e8f9f7 | 251 | __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1); |
<> | 144:ef7eb2e8f9f7 | 252 | } |
<> | 144:ef7eb2e8f9f7 | 253 | } |
<> | 144:ef7eb2e8f9f7 | 254 | |
<> | 144:ef7eb2e8f9f7 | 255 | #else |
<> | 144:ef7eb2e8f9f7 | 256 | |
<> | 144:ef7eb2e8f9f7 | 257 | // 32-bit timer selection |
<> | 144:ef7eb2e8f9f7 | 258 | #define TIM_MST TIM2 |
<> | 144:ef7eb2e8f9f7 | 259 | |
<> | 144:ef7eb2e8f9f7 | 260 | static TIM_HandleTypeDef TimMasterHandle; |
<> | 144:ef7eb2e8f9f7 | 261 | static int us_ticker_inited = 0; |
<> | 144:ef7eb2e8f9f7 | 262 | |
<> | 144:ef7eb2e8f9f7 | 263 | void us_ticker_init(void) { |
<> | 144:ef7eb2e8f9f7 | 264 | if (us_ticker_inited) return; |
<> | 144:ef7eb2e8f9f7 | 265 | us_ticker_inited = 1; |
<> | 144:ef7eb2e8f9f7 | 266 | |
<> | 144:ef7eb2e8f9f7 | 267 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 268 | |
<> | 144:ef7eb2e8f9f7 | 269 | HAL_InitTick(0); // The passed value is not used |
<> | 144:ef7eb2e8f9f7 | 270 | } |
<> | 144:ef7eb2e8f9f7 | 271 | |
<> | 144:ef7eb2e8f9f7 | 272 | uint32_t us_ticker_read() { |
<> | 144:ef7eb2e8f9f7 | 273 | if (!us_ticker_inited) us_ticker_init(); |
<> | 144:ef7eb2e8f9f7 | 274 | return TIM_MST->CNT; |
<> | 144:ef7eb2e8f9f7 | 275 | } |
<> | 144:ef7eb2e8f9f7 | 276 | |
<> | 144:ef7eb2e8f9f7 | 277 | void us_ticker_set_interrupt(timestamp_t timestamp) { |
<> | 144:ef7eb2e8f9f7 | 278 | // Set new output compare value |
<> | 144:ef7eb2e8f9f7 | 279 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp); |
<> | 144:ef7eb2e8f9f7 | 280 | // Enable IT |
<> | 144:ef7eb2e8f9f7 | 281 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 282 | } |
<> | 144:ef7eb2e8f9f7 | 283 | |
<> | 144:ef7eb2e8f9f7 | 284 | void us_ticker_disable_interrupt(void) { |
<> | 144:ef7eb2e8f9f7 | 285 | __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 286 | } |
<> | 144:ef7eb2e8f9f7 | 287 | |
<> | 144:ef7eb2e8f9f7 | 288 | void us_ticker_clear_interrupt(void) { |
<> | 144:ef7eb2e8f9f7 | 289 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 290 | } |
<> | 144:ef7eb2e8f9f7 | 291 | #endif |