mbed library sources for GR-PEACH rev.B.
Fork of mbed-src by
targets/hal/TARGET_STM/TARGET_STM32F0/us_ticker.c@514:cf59050bad8e, 2015-04-15 (annotated)
- Committer:
- RyoheiHagimoto
- Date:
- Wed Apr 15 01:34:29 2015 +0000
- Revision:
- 514:cf59050bad8e
- Parent:
- 469:fc4922e0c183
mbed library sources for GR-PEACH rev.B.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 469:fc4922e0c183 | 1 | /* mbed Microcontroller Library |
mbed_official | 469:fc4922e0c183 | 2 | * Copyright (c) 2014, STMicroelectronics |
mbed_official | 469:fc4922e0c183 | 3 | * All rights reserved. |
mbed_official | 469:fc4922e0c183 | 4 | * |
mbed_official | 469:fc4922e0c183 | 5 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 469:fc4922e0c183 | 6 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 469:fc4922e0c183 | 7 | * |
mbed_official | 469:fc4922e0c183 | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 469:fc4922e0c183 | 9 | * this list of conditions and the following disclaimer. |
mbed_official | 469:fc4922e0c183 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 469:fc4922e0c183 | 11 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 469:fc4922e0c183 | 12 | * and/or other materials provided with the distribution. |
mbed_official | 469:fc4922e0c183 | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 469:fc4922e0c183 | 14 | * may be used to endorse or promote products derived from this software |
mbed_official | 469:fc4922e0c183 | 15 | * without specific prior written permission. |
mbed_official | 469:fc4922e0c183 | 16 | * |
mbed_official | 469:fc4922e0c183 | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 469:fc4922e0c183 | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 469:fc4922e0c183 | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 469:fc4922e0c183 | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 469:fc4922e0c183 | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 469:fc4922e0c183 | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 469:fc4922e0c183 | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 469:fc4922e0c183 | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 469:fc4922e0c183 | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 469:fc4922e0c183 | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 469:fc4922e0c183 | 27 | */ |
mbed_official | 469:fc4922e0c183 | 28 | #include <stddef.h> |
mbed_official | 469:fc4922e0c183 | 29 | #include "us_ticker_api.h" |
mbed_official | 469:fc4922e0c183 | 30 | #include "PeripheralNames.h" |
mbed_official | 469:fc4922e0c183 | 31 | |
mbed_official | 469:fc4922e0c183 | 32 | #if defined(TARGET_STM32F070RB) |
mbed_official | 469:fc4922e0c183 | 33 | |
mbed_official | 469:fc4922e0c183 | 34 | // Timer selection |
mbed_official | 469:fc4922e0c183 | 35 | #define TIM_MST TIM1 |
mbed_official | 469:fc4922e0c183 | 36 | |
mbed_official | 469:fc4922e0c183 | 37 | static TIM_HandleTypeDef TimMasterHandle; |
mbed_official | 469:fc4922e0c183 | 38 | static int us_ticker_inited = 0; |
mbed_official | 469:fc4922e0c183 | 39 | |
mbed_official | 469:fc4922e0c183 | 40 | volatile uint32_t SlaveCounter = 0; |
mbed_official | 469:fc4922e0c183 | 41 | volatile uint32_t oc_int_part = 0; |
mbed_official | 469:fc4922e0c183 | 42 | volatile uint16_t oc_rem_part = 0; |
mbed_official | 469:fc4922e0c183 | 43 | |
mbed_official | 469:fc4922e0c183 | 44 | void set_compare(uint16_t count) |
mbed_official | 469:fc4922e0c183 | 45 | { |
mbed_official | 469:fc4922e0c183 | 46 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 47 | // Set new output compare value |
mbed_official | 469:fc4922e0c183 | 48 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, count); |
mbed_official | 469:fc4922e0c183 | 49 | // Enable IT |
mbed_official | 469:fc4922e0c183 | 50 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
mbed_official | 469:fc4922e0c183 | 51 | } |
mbed_official | 469:fc4922e0c183 | 52 | |
mbed_official | 469:fc4922e0c183 | 53 | void us_ticker_init(void) |
mbed_official | 469:fc4922e0c183 | 54 | { |
mbed_official | 469:fc4922e0c183 | 55 | if (us_ticker_inited) return; |
mbed_official | 469:fc4922e0c183 | 56 | us_ticker_inited = 1; |
mbed_official | 469:fc4922e0c183 | 57 | |
mbed_official | 469:fc4922e0c183 | 58 | HAL_InitTick(0); // The passed value is not used |
mbed_official | 469:fc4922e0c183 | 59 | } |
mbed_official | 469:fc4922e0c183 | 60 | |
mbed_official | 469:fc4922e0c183 | 61 | uint32_t us_ticker_read() |
mbed_official | 469:fc4922e0c183 | 62 | { |
mbed_official | 469:fc4922e0c183 | 63 | uint32_t counter, counter2; |
mbed_official | 469:fc4922e0c183 | 64 | if (!us_ticker_inited) us_ticker_init(); |
mbed_official | 469:fc4922e0c183 | 65 | // A situation might appear when Master overflows right after Slave is read and before the |
mbed_official | 469:fc4922e0c183 | 66 | // new (overflowed) value of Master is read. Which would make the code below consider the |
mbed_official | 469:fc4922e0c183 | 67 | // previous (incorrect) value of Slave and the new value of Master, which would return a |
mbed_official | 469:fc4922e0c183 | 68 | // value in the past. Avoid this by computing consecutive values of the timer until they |
mbed_official | 469:fc4922e0c183 | 69 | // are properly ordered. |
mbed_official | 469:fc4922e0c183 | 70 | counter = (uint32_t)(SlaveCounter << 16); |
mbed_official | 469:fc4922e0c183 | 71 | counter += TIM_MST->CNT; |
mbed_official | 469:fc4922e0c183 | 72 | while (1) { |
mbed_official | 469:fc4922e0c183 | 73 | counter2 = (uint32_t)(SlaveCounter << 16); |
mbed_official | 469:fc4922e0c183 | 74 | counter2 += TIM_MST->CNT; |
mbed_official | 469:fc4922e0c183 | 75 | if (counter2 > counter) { |
mbed_official | 469:fc4922e0c183 | 76 | break; |
mbed_official | 469:fc4922e0c183 | 77 | } |
mbed_official | 469:fc4922e0c183 | 78 | counter = counter2; |
mbed_official | 469:fc4922e0c183 | 79 | } |
mbed_official | 469:fc4922e0c183 | 80 | return counter2; |
mbed_official | 469:fc4922e0c183 | 81 | } |
mbed_official | 469:fc4922e0c183 | 82 | |
mbed_official | 469:fc4922e0c183 | 83 | void us_ticker_set_interrupt(timestamp_t timestamp) |
mbed_official | 469:fc4922e0c183 | 84 | { |
mbed_official | 469:fc4922e0c183 | 85 | int delta = (int)((uint32_t)timestamp - us_ticker_read()); |
mbed_official | 469:fc4922e0c183 | 86 | uint16_t cval = TIM_MST->CNT; |
mbed_official | 469:fc4922e0c183 | 87 | |
mbed_official | 469:fc4922e0c183 | 88 | if (delta <= 0) { // This event was in the past |
mbed_official | 469:fc4922e0c183 | 89 | us_ticker_irq_handler(); |
mbed_official | 469:fc4922e0c183 | 90 | } else { |
mbed_official | 469:fc4922e0c183 | 91 | oc_int_part = (uint32_t)(delta >> 16); |
mbed_official | 469:fc4922e0c183 | 92 | oc_rem_part = (uint16_t)(delta & 0xFFFF); |
mbed_official | 469:fc4922e0c183 | 93 | if (oc_rem_part <= (0xFFFF - cval)) { |
mbed_official | 469:fc4922e0c183 | 94 | set_compare(cval + oc_rem_part); |
mbed_official | 469:fc4922e0c183 | 95 | oc_rem_part = 0; |
mbed_official | 469:fc4922e0c183 | 96 | } else { |
mbed_official | 469:fc4922e0c183 | 97 | set_compare(0xFFFF); |
mbed_official | 469:fc4922e0c183 | 98 | oc_rem_part = oc_rem_part - (0xFFFF - cval); |
mbed_official | 469:fc4922e0c183 | 99 | } |
mbed_official | 469:fc4922e0c183 | 100 | } |
mbed_official | 469:fc4922e0c183 | 101 | } |
mbed_official | 469:fc4922e0c183 | 102 | |
mbed_official | 469:fc4922e0c183 | 103 | void us_ticker_disable_interrupt(void) |
mbed_official | 469:fc4922e0c183 | 104 | { |
mbed_official | 469:fc4922e0c183 | 105 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 106 | __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
mbed_official | 469:fc4922e0c183 | 107 | } |
mbed_official | 469:fc4922e0c183 | 108 | |
mbed_official | 469:fc4922e0c183 | 109 | void us_ticker_clear_interrupt(void) |
mbed_official | 469:fc4922e0c183 | 110 | { |
mbed_official | 469:fc4922e0c183 | 111 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 112 | if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) { |
mbed_official | 469:fc4922e0c183 | 113 | __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1); |
mbed_official | 469:fc4922e0c183 | 114 | } |
mbed_official | 469:fc4922e0c183 | 115 | } |
mbed_official | 469:fc4922e0c183 | 116 | |
mbed_official | 469:fc4922e0c183 | 117 | #elif defined(TARGET_STM32F030R8) || defined (TARGET_STM32F051R8) |
mbed_official | 469:fc4922e0c183 | 118 | |
mbed_official | 469:fc4922e0c183 | 119 | // Timer selection: |
mbed_official | 469:fc4922e0c183 | 120 | #define TIM_MST TIM1 |
mbed_official | 469:fc4922e0c183 | 121 | #define TIM_MST_UP_IRQ TIM1_BRK_UP_TRG_COM_IRQn |
mbed_official | 469:fc4922e0c183 | 122 | #define TIM_MST_OC_IRQ TIM1_CC_IRQn |
mbed_official | 469:fc4922e0c183 | 123 | #define TIM_MST_RCC __TIM1_CLK_ENABLE() |
mbed_official | 469:fc4922e0c183 | 124 | |
mbed_official | 469:fc4922e0c183 | 125 | static TIM_HandleTypeDef TimMasterHandle; |
mbed_official | 469:fc4922e0c183 | 126 | |
mbed_official | 469:fc4922e0c183 | 127 | |
mbed_official | 469:fc4922e0c183 | 128 | static int us_ticker_inited = 0; |
mbed_official | 469:fc4922e0c183 | 129 | static volatile uint32_t SlaveCounter = 0; |
mbed_official | 469:fc4922e0c183 | 130 | static volatile uint32_t oc_int_part = 0; |
mbed_official | 469:fc4922e0c183 | 131 | static volatile uint16_t oc_rem_part = 0; |
mbed_official | 469:fc4922e0c183 | 132 | |
mbed_official | 469:fc4922e0c183 | 133 | void set_compare(uint16_t count) |
mbed_official | 469:fc4922e0c183 | 134 | { |
mbed_official | 469:fc4922e0c183 | 135 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 136 | |
mbed_official | 469:fc4922e0c183 | 137 | // Set new output compare value |
mbed_official | 469:fc4922e0c183 | 138 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, count); |
mbed_official | 469:fc4922e0c183 | 139 | // Enable IT |
mbed_official | 469:fc4922e0c183 | 140 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
mbed_official | 469:fc4922e0c183 | 141 | } |
mbed_official | 469:fc4922e0c183 | 142 | |
mbed_official | 469:fc4922e0c183 | 143 | // Used to increment the slave counter |
mbed_official | 469:fc4922e0c183 | 144 | static void tim_update_irq_handler(void) |
mbed_official | 469:fc4922e0c183 | 145 | { |
mbed_official | 469:fc4922e0c183 | 146 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 147 | |
mbed_official | 469:fc4922e0c183 | 148 | // Clear Update interrupt flag |
mbed_official | 469:fc4922e0c183 | 149 | if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE) == SET) { |
mbed_official | 469:fc4922e0c183 | 150 | __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE); |
mbed_official | 469:fc4922e0c183 | 151 | SlaveCounter++; |
mbed_official | 469:fc4922e0c183 | 152 | } |
mbed_official | 469:fc4922e0c183 | 153 | } |
mbed_official | 469:fc4922e0c183 | 154 | |
mbed_official | 469:fc4922e0c183 | 155 | // Used by interrupt system |
mbed_official | 469:fc4922e0c183 | 156 | static void tim_oc_irq_handler(void) |
mbed_official | 469:fc4922e0c183 | 157 | { |
mbed_official | 469:fc4922e0c183 | 158 | uint16_t cval = TIM_MST->CNT; |
mbed_official | 469:fc4922e0c183 | 159 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 160 | |
mbed_official | 469:fc4922e0c183 | 161 | // Clear CC1 interrupt flag |
mbed_official | 469:fc4922e0c183 | 162 | if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) { |
mbed_official | 469:fc4922e0c183 | 163 | __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1); |
mbed_official | 469:fc4922e0c183 | 164 | } |
mbed_official | 469:fc4922e0c183 | 165 | if (oc_rem_part > 0) { |
mbed_official | 469:fc4922e0c183 | 166 | set_compare(oc_rem_part); // Finish the remaining time left |
mbed_official | 469:fc4922e0c183 | 167 | oc_rem_part = 0; |
mbed_official | 469:fc4922e0c183 | 168 | } else { |
mbed_official | 469:fc4922e0c183 | 169 | if (oc_int_part > 0) { |
mbed_official | 469:fc4922e0c183 | 170 | set_compare(0xFFFF); |
mbed_official | 469:fc4922e0c183 | 171 | oc_rem_part = cval; // To finish the counter loop the next time |
mbed_official | 469:fc4922e0c183 | 172 | oc_int_part--; |
mbed_official | 469:fc4922e0c183 | 173 | } else { |
mbed_official | 469:fc4922e0c183 | 174 | us_ticker_irq_handler(); |
mbed_official | 469:fc4922e0c183 | 175 | } |
mbed_official | 469:fc4922e0c183 | 176 | } |
mbed_official | 469:fc4922e0c183 | 177 | |
mbed_official | 469:fc4922e0c183 | 178 | } |
mbed_official | 469:fc4922e0c183 | 179 | |
mbed_official | 469:fc4922e0c183 | 180 | void us_ticker_init(void) |
mbed_official | 469:fc4922e0c183 | 181 | { |
mbed_official | 469:fc4922e0c183 | 182 | |
mbed_official | 469:fc4922e0c183 | 183 | if (us_ticker_inited) return; |
mbed_official | 469:fc4922e0c183 | 184 | us_ticker_inited = 1; |
mbed_official | 469:fc4922e0c183 | 185 | |
mbed_official | 469:fc4922e0c183 | 186 | // Enable timer clock |
mbed_official | 469:fc4922e0c183 | 187 | TIM_MST_RCC; |
mbed_official | 469:fc4922e0c183 | 188 | |
mbed_official | 469:fc4922e0c183 | 189 | // Configure time base |
mbed_official | 469:fc4922e0c183 | 190 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 191 | TimMasterHandle.Init.Period = 0xFFFF; |
mbed_official | 469:fc4922e0c183 | 192 | TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 �s tick |
mbed_official | 469:fc4922e0c183 | 193 | TimMasterHandle.Init.ClockDivision = 0; |
mbed_official | 469:fc4922e0c183 | 194 | TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP; |
mbed_official | 469:fc4922e0c183 | 195 | HAL_TIM_Base_Init(&TimMasterHandle); |
mbed_official | 469:fc4922e0c183 | 196 | |
mbed_official | 469:fc4922e0c183 | 197 | // Configure interrupts |
mbed_official | 469:fc4922e0c183 | 198 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_UPDATE); |
mbed_official | 469:fc4922e0c183 | 199 | |
mbed_official | 469:fc4922e0c183 | 200 | // Update interrupt used for 32-bit counter |
mbed_official | 469:fc4922e0c183 | 201 | NVIC_SetVector(TIM_MST_UP_IRQ, (uint32_t)tim_update_irq_handler); |
mbed_official | 469:fc4922e0c183 | 202 | NVIC_EnableIRQ(TIM_MST_UP_IRQ); |
mbed_official | 469:fc4922e0c183 | 203 | |
mbed_official | 469:fc4922e0c183 | 204 | // Output compare interrupt used for timeout feature |
mbed_official | 469:fc4922e0c183 | 205 | NVIC_SetVector(TIM_MST_OC_IRQ, (uint32_t)tim_oc_irq_handler); |
mbed_official | 469:fc4922e0c183 | 206 | NVIC_EnableIRQ(TIM_MST_OC_IRQ); |
mbed_official | 469:fc4922e0c183 | 207 | |
mbed_official | 469:fc4922e0c183 | 208 | // Enable timer |
mbed_official | 469:fc4922e0c183 | 209 | HAL_TIM_Base_Start(&TimMasterHandle); |
mbed_official | 469:fc4922e0c183 | 210 | } |
mbed_official | 469:fc4922e0c183 | 211 | |
mbed_official | 469:fc4922e0c183 | 212 | uint32_t us_ticker_read() |
mbed_official | 469:fc4922e0c183 | 213 | { |
mbed_official | 469:fc4922e0c183 | 214 | uint32_t counter, counter2; |
mbed_official | 469:fc4922e0c183 | 215 | if (!us_ticker_inited) us_ticker_init(); |
mbed_official | 469:fc4922e0c183 | 216 | // A situation might appear when Master overflows right after Slave is read and before the |
mbed_official | 469:fc4922e0c183 | 217 | // new (overflowed) value of Master is read. Which would make the code below consider the |
mbed_official | 469:fc4922e0c183 | 218 | // previous (incorrect) value of Slave and the new value of Master, which would return a |
mbed_official | 469:fc4922e0c183 | 219 | // value in the past. Avoid this by computing consecutive values of the timer until they |
mbed_official | 469:fc4922e0c183 | 220 | // are properly ordered. |
mbed_official | 469:fc4922e0c183 | 221 | counter = (uint32_t)(SlaveCounter << 16); |
mbed_official | 469:fc4922e0c183 | 222 | counter += TIM_MST->CNT; |
mbed_official | 469:fc4922e0c183 | 223 | while (1) { |
mbed_official | 469:fc4922e0c183 | 224 | counter2 = (uint32_t)(SlaveCounter << 16); |
mbed_official | 469:fc4922e0c183 | 225 | counter2 += TIM_MST->CNT; |
mbed_official | 469:fc4922e0c183 | 226 | if (counter2 > counter) { |
mbed_official | 469:fc4922e0c183 | 227 | break; |
mbed_official | 469:fc4922e0c183 | 228 | } |
mbed_official | 469:fc4922e0c183 | 229 | counter = counter2; |
mbed_official | 469:fc4922e0c183 | 230 | } |
mbed_official | 469:fc4922e0c183 | 231 | return counter2; |
mbed_official | 469:fc4922e0c183 | 232 | } |
mbed_official | 469:fc4922e0c183 | 233 | |
mbed_official | 469:fc4922e0c183 | 234 | void us_ticker_set_interrupt(timestamp_t timestamp) |
mbed_official | 469:fc4922e0c183 | 235 | { |
mbed_official | 469:fc4922e0c183 | 236 | int delta = (int)((uint32_t)timestamp - us_ticker_read()); |
mbed_official | 469:fc4922e0c183 | 237 | uint16_t cval = TIM_MST->CNT; |
mbed_official | 469:fc4922e0c183 | 238 | |
mbed_official | 469:fc4922e0c183 | 239 | if (delta <= 0) { // This event was in the past |
mbed_official | 469:fc4922e0c183 | 240 | us_ticker_irq_handler(); |
mbed_official | 469:fc4922e0c183 | 241 | } else { |
mbed_official | 469:fc4922e0c183 | 242 | oc_int_part = (uint32_t)(delta >> 16); |
mbed_official | 469:fc4922e0c183 | 243 | oc_rem_part = (uint16_t)(delta & 0xFFFF); |
mbed_official | 469:fc4922e0c183 | 244 | if (oc_rem_part <= (0xFFFF - cval)) { |
mbed_official | 469:fc4922e0c183 | 245 | set_compare(cval + oc_rem_part); |
mbed_official | 469:fc4922e0c183 | 246 | oc_rem_part = 0; |
mbed_official | 469:fc4922e0c183 | 247 | } else { |
mbed_official | 469:fc4922e0c183 | 248 | set_compare(0xFFFF); |
mbed_official | 469:fc4922e0c183 | 249 | oc_rem_part = oc_rem_part - (0xFFFF - cval); |
mbed_official | 469:fc4922e0c183 | 250 | } |
mbed_official | 469:fc4922e0c183 | 251 | } |
mbed_official | 469:fc4922e0c183 | 252 | } |
mbed_official | 469:fc4922e0c183 | 253 | |
mbed_official | 469:fc4922e0c183 | 254 | void us_ticker_disable_interrupt(void) |
mbed_official | 469:fc4922e0c183 | 255 | { |
mbed_official | 469:fc4922e0c183 | 256 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 257 | __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
mbed_official | 469:fc4922e0c183 | 258 | } |
mbed_official | 469:fc4922e0c183 | 259 | |
mbed_official | 469:fc4922e0c183 | 260 | void us_ticker_clear_interrupt(void) |
mbed_official | 469:fc4922e0c183 | 261 | { |
mbed_official | 469:fc4922e0c183 | 262 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 263 | if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) { |
mbed_official | 469:fc4922e0c183 | 264 | __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1); |
mbed_official | 469:fc4922e0c183 | 265 | } |
mbed_official | 469:fc4922e0c183 | 266 | } |
mbed_official | 469:fc4922e0c183 | 267 | |
mbed_official | 469:fc4922e0c183 | 268 | #else |
mbed_official | 469:fc4922e0c183 | 269 | |
mbed_official | 469:fc4922e0c183 | 270 | // 32-bit timer selection |
mbed_official | 469:fc4922e0c183 | 271 | #define TIM_MST TIM2 |
mbed_official | 469:fc4922e0c183 | 272 | |
mbed_official | 469:fc4922e0c183 | 273 | static TIM_HandleTypeDef TimMasterHandle; |
mbed_official | 469:fc4922e0c183 | 274 | static int us_ticker_inited = 0; |
mbed_official | 469:fc4922e0c183 | 275 | |
mbed_official | 469:fc4922e0c183 | 276 | void us_ticker_init(void) |
mbed_official | 469:fc4922e0c183 | 277 | { |
mbed_official | 469:fc4922e0c183 | 278 | if (us_ticker_inited) return; |
mbed_official | 469:fc4922e0c183 | 279 | us_ticker_inited = 1; |
mbed_official | 469:fc4922e0c183 | 280 | |
mbed_official | 469:fc4922e0c183 | 281 | TimMasterHandle.Instance = TIM_MST; |
mbed_official | 469:fc4922e0c183 | 282 | |
mbed_official | 469:fc4922e0c183 | 283 | HAL_InitTick(0); // The passed value is not used |
mbed_official | 469:fc4922e0c183 | 284 | } |
mbed_official | 469:fc4922e0c183 | 285 | |
mbed_official | 469:fc4922e0c183 | 286 | uint32_t us_ticker_read() |
mbed_official | 469:fc4922e0c183 | 287 | { |
mbed_official | 469:fc4922e0c183 | 288 | if (!us_ticker_inited) us_ticker_init(); |
mbed_official | 469:fc4922e0c183 | 289 | return TIM_MST->CNT; |
mbed_official | 469:fc4922e0c183 | 290 | } |
mbed_official | 469:fc4922e0c183 | 291 | |
mbed_official | 469:fc4922e0c183 | 292 | void us_ticker_set_interrupt(timestamp_t timestamp) |
mbed_official | 469:fc4922e0c183 | 293 | { |
mbed_official | 469:fc4922e0c183 | 294 | // Set new output compare value |
mbed_official | 469:fc4922e0c183 | 295 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp); |
mbed_official | 469:fc4922e0c183 | 296 | // Enable IT |
mbed_official | 469:fc4922e0c183 | 297 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
mbed_official | 469:fc4922e0c183 | 298 | } |
mbed_official | 469:fc4922e0c183 | 299 | |
mbed_official | 469:fc4922e0c183 | 300 | void us_ticker_disable_interrupt(void) |
mbed_official | 469:fc4922e0c183 | 301 | { |
mbed_official | 469:fc4922e0c183 | 302 | __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
mbed_official | 469:fc4922e0c183 | 303 | } |
mbed_official | 469:fc4922e0c183 | 304 | |
mbed_official | 469:fc4922e0c183 | 305 | void us_ticker_clear_interrupt(void) |
mbed_official | 469:fc4922e0c183 | 306 | { |
mbed_official | 469:fc4922e0c183 | 307 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1); |
mbed_official | 469:fc4922e0c183 | 308 | } |
mbed_official | 469:fc4922e0c183 | 309 | #endif |