mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
targets/TARGET_STM/lp_ticker.c@189:f392fc9709a3, 2019-02-20 (annotated)
- Committer:
- AnnaBridge
- Date:
- Wed Feb 20 22:31:08 2019 +0000
- Revision:
- 189:f392fc9709a3
- Parent:
- 188:bcfe06ba3d64
mbed library release version 165
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 154:37f96f9d4de2 | 1 | /* mbed Microcontroller Library |
<> | 154:37f96f9d4de2 | 2 | ******************************************************************************* |
Anna Bridge |
186:707f6e361f3e | 3 | * Copyright (c) 2018, STMicroelectronics |
<> | 154:37f96f9d4de2 | 4 | * All rights reserved. |
<> | 154:37f96f9d4de2 | 5 | * |
<> | 154:37f96f9d4de2 | 6 | * Redistribution and use in source and binary forms, with or without |
<> | 154:37f96f9d4de2 | 7 | * modification, are permitted provided that the following conditions are met: |
<> | 154:37f96f9d4de2 | 8 | * |
<> | 154:37f96f9d4de2 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
<> | 154:37f96f9d4de2 | 10 | * this list of conditions and the following disclaimer. |
<> | 154:37f96f9d4de2 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
<> | 154:37f96f9d4de2 | 12 | * this list of conditions and the following disclaimer in the documentation |
<> | 154:37f96f9d4de2 | 13 | * and/or other materials provided with the distribution. |
<> | 154:37f96f9d4de2 | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
<> | 154:37f96f9d4de2 | 15 | * may be used to endorse or promote products derived from this software |
<> | 154:37f96f9d4de2 | 16 | * without specific prior written permission. |
<> | 154:37f96f9d4de2 | 17 | * |
<> | 154:37f96f9d4de2 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
<> | 154:37f96f9d4de2 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
<> | 154:37f96f9d4de2 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
<> | 154:37f96f9d4de2 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
<> | 154:37f96f9d4de2 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
<> | 154:37f96f9d4de2 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
<> | 154:37f96f9d4de2 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
<> | 154:37f96f9d4de2 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
<> | 154:37f96f9d4de2 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
<> | 154:37f96f9d4de2 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
<> | 154:37f96f9d4de2 | 28 | ******************************************************************************* |
<> | 154:37f96f9d4de2 | 29 | */ |
<> | 154:37f96f9d4de2 | 30 | |
Anna Bridge |
186:707f6e361f3e | 31 | #if DEVICE_LPTICKER |
<> | 154:37f96f9d4de2 | 32 | |
Anna Bridge |
186:707f6e361f3e | 33 | /***********************************************************************/ |
Anna Bridge |
186:707f6e361f3e | 34 | /* lpticker_lptim config is 1 in json config file */ |
Anna Bridge |
186:707f6e361f3e | 35 | /* LPTICKER is based on LPTIM feature from ST drivers. RTC is not used */ |
Anna Bridge |
186:707f6e361f3e | 36 | #if MBED_CONF_TARGET_LPTICKER_LPTIM |
<> | 154:37f96f9d4de2 | 37 | |
Anna Bridge |
186:707f6e361f3e | 38 | #include "lp_ticker_api.h" |
Anna Bridge |
186:707f6e361f3e | 39 | #include "mbed_error.h" |
AnnaBridge | 181:57724642e740 | 40 | |
AnnaBridge | 189:f392fc9709a3 | 41 | #if !defined(LPTICKER_DELAY_TICKS) || (LPTICKER_DELAY_TICKS < 3) |
AnnaBridge | 189:f392fc9709a3 | 42 | #warning "lpticker_delay_ticks value should be set to 3" |
AnnaBridge | 189:f392fc9709a3 | 43 | #endif |
AnnaBridge | 189:f392fc9709a3 | 44 | |
AnnaBridge | 181:57724642e740 | 45 | LPTIM_HandleTypeDef LptimHandle; |
AnnaBridge | 181:57724642e740 | 46 | |
AnnaBridge | 187:0387e8f68319 | 47 | const ticker_info_t *lp_ticker_get_info() |
Anna Bridge |
186:707f6e361f3e | 48 | { |
Anna Bridge |
186:707f6e361f3e | 49 | static const ticker_info_t info = { |
Anna Bridge |
186:707f6e361f3e | 50 | #if MBED_CONF_TARGET_LSE_AVAILABLE |
AnnaBridge | 189:f392fc9709a3 | 51 | LSE_VALUE / MBED_CONF_TARGET_LPTICKER_LPTIM_CLOCK, |
Anna Bridge |
186:707f6e361f3e | 52 | #else |
AnnaBridge | 189:f392fc9709a3 | 53 | LSI_VALUE / MBED_CONF_TARGET_LPTICKER_LPTIM_CLOCK, |
Anna Bridge |
186:707f6e361f3e | 54 | #endif |
Anna Bridge |
186:707f6e361f3e | 55 | 16 |
Anna Bridge |
186:707f6e361f3e | 56 | }; |
Anna Bridge |
186:707f6e361f3e | 57 | return &info; |
Anna Bridge |
186:707f6e361f3e | 58 | } |
Anna Bridge |
186:707f6e361f3e | 59 | |
AnnaBridge | 181:57724642e740 | 60 | volatile uint8_t lp_Fired = 0; |
AnnaBridge | 181:57724642e740 | 61 | |
AnnaBridge | 181:57724642e740 | 62 | static void LPTIM1_IRQHandler(void); |
AnnaBridge | 181:57724642e740 | 63 | static void (*irq_handler)(void); |
AnnaBridge | 181:57724642e740 | 64 | |
AnnaBridge | 181:57724642e740 | 65 | void lp_ticker_init(void) |
AnnaBridge | 181:57724642e740 | 66 | { |
AnnaBridge | 181:57724642e740 | 67 | /* Check if LPTIM is already configured */ |
AnnaBridge | 187:0387e8f68319 | 68 | if (__HAL_RCC_LPTIM1_IS_CLK_ENABLED()) { |
AnnaBridge | 187:0387e8f68319 | 69 | lp_ticker_disable_interrupt(); |
AnnaBridge | 181:57724642e740 | 70 | return; |
AnnaBridge | 181:57724642e740 | 71 | } |
AnnaBridge | 181:57724642e740 | 72 | |
AnnaBridge | 181:57724642e740 | 73 | RCC_PeriphCLKInitTypeDef RCC_PeriphCLKInitStruct = {0}; |
AnnaBridge | 181:57724642e740 | 74 | RCC_OscInitTypeDef RCC_OscInitStruct = {0}; |
AnnaBridge | 181:57724642e740 | 75 | |
AnnaBridge | 181:57724642e740 | 76 | #if MBED_CONF_TARGET_LSE_AVAILABLE |
AnnaBridge | 181:57724642e740 | 77 | |
AnnaBridge | 181:57724642e740 | 78 | /* Enable LSE clock */ |
AnnaBridge | 181:57724642e740 | 79 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE; |
AnnaBridge | 181:57724642e740 | 80 | RCC_OscInitStruct.LSEState = RCC_LSE_ON; |
AnnaBridge | 181:57724642e740 | 81 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; |
AnnaBridge | 181:57724642e740 | 82 | |
AnnaBridge | 181:57724642e740 | 83 | /* Select the LSE clock as LPTIM peripheral clock */ |
AnnaBridge | 181:57724642e740 | 84 | RCC_PeriphCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LPTIM1; |
AnnaBridge | 181:57724642e740 | 85 | #if (TARGET_STM32L0) |
AnnaBridge | 181:57724642e740 | 86 | RCC_PeriphCLKInitStruct.LptimClockSelection = RCC_LPTIM1CLKSOURCE_LSE; |
AnnaBridge | 181:57724642e740 | 87 | #else |
AnnaBridge | 181:57724642e740 | 88 | RCC_PeriphCLKInitStruct.Lptim1ClockSelection = RCC_LPTIM1CLKSOURCE_LSE; |
AnnaBridge | 181:57724642e740 | 89 | #endif |
AnnaBridge | 181:57724642e740 | 90 | |
AnnaBridge | 181:57724642e740 | 91 | #else /* MBED_CONF_TARGET_LSE_AVAILABLE */ |
AnnaBridge | 181:57724642e740 | 92 | |
AnnaBridge | 181:57724642e740 | 93 | /* Enable LSI clock */ |
AnnaBridge | 181:57724642e740 | 94 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI; |
AnnaBridge | 181:57724642e740 | 95 | RCC_OscInitStruct.LSIState = RCC_LSI_ON; |
AnnaBridge | 181:57724642e740 | 96 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; |
AnnaBridge | 181:57724642e740 | 97 | |
AnnaBridge | 181:57724642e740 | 98 | /* Select the LSI clock as LPTIM peripheral clock */ |
AnnaBridge | 181:57724642e740 | 99 | RCC_PeriphCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LPTIM1; |
AnnaBridge | 181:57724642e740 | 100 | #if (TARGET_STM32L0) |
AnnaBridge | 181:57724642e740 | 101 | RCC_PeriphCLKInitStruct.LptimClockSelection = RCC_LPTIM1CLKSOURCE_LSI; |
AnnaBridge | 181:57724642e740 | 102 | #else |
AnnaBridge | 181:57724642e740 | 103 | RCC_PeriphCLKInitStruct.Lptim1ClockSelection = RCC_LPTIM1CLKSOURCE_LSI; |
AnnaBridge | 181:57724642e740 | 104 | #endif |
AnnaBridge | 181:57724642e740 | 105 | |
AnnaBridge | 181:57724642e740 | 106 | #endif /* MBED_CONF_TARGET_LSE_AVAILABLE */ |
AnnaBridge | 181:57724642e740 | 107 | |
AnnaBridge | 181:57724642e740 | 108 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { |
AnnaBridge | 181:57724642e740 | 109 | error("HAL_RCC_OscConfig ERROR\n"); |
AnnaBridge | 181:57724642e740 | 110 | return; |
AnnaBridge | 181:57724642e740 | 111 | } |
AnnaBridge | 181:57724642e740 | 112 | |
AnnaBridge | 181:57724642e740 | 113 | if (HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphCLKInitStruct) != HAL_OK) { |
AnnaBridge | 181:57724642e740 | 114 | error("HAL_RCCEx_PeriphCLKConfig ERROR\n"); |
AnnaBridge | 181:57724642e740 | 115 | return; |
AnnaBridge | 181:57724642e740 | 116 | } |
AnnaBridge | 181:57724642e740 | 117 | |
AnnaBridge | 181:57724642e740 | 118 | __HAL_RCC_LPTIM1_CLK_ENABLE(); |
AnnaBridge | 181:57724642e740 | 119 | __HAL_RCC_LPTIM1_FORCE_RESET(); |
AnnaBridge | 181:57724642e740 | 120 | __HAL_RCC_LPTIM1_RELEASE_RESET(); |
AnnaBridge | 181:57724642e740 | 121 | |
AnnaBridge | 181:57724642e740 | 122 | /* Initialize the LPTIM peripheral */ |
AnnaBridge | 181:57724642e740 | 123 | LptimHandle.Instance = LPTIM1; |
AnnaBridge | 181:57724642e740 | 124 | LptimHandle.State = HAL_LPTIM_STATE_RESET; |
AnnaBridge | 181:57724642e740 | 125 | LptimHandle.Init.Clock.Source = LPTIM_CLOCKSOURCE_APBCLOCK_LPOSC; |
AnnaBridge | 189:f392fc9709a3 | 126 | #if defined(MBED_CONF_TARGET_LPTICKER_LPTIM_CLOCK) |
AnnaBridge | 189:f392fc9709a3 | 127 | #if (MBED_CONF_TARGET_LPTICKER_LPTIM_CLOCK == 4) |
AnnaBridge | 189:f392fc9709a3 | 128 | LptimHandle.Init.Clock.Prescaler = LPTIM_PRESCALER_DIV4; |
AnnaBridge | 189:f392fc9709a3 | 129 | #elif (MBED_CONF_TARGET_LPTICKER_LPTIM_CLOCK == 2) |
AnnaBridge | 189:f392fc9709a3 | 130 | LptimHandle.Init.Clock.Prescaler = LPTIM_PRESCALER_DIV2; |
AnnaBridge | 189:f392fc9709a3 | 131 | #else |
Anna Bridge |
186:707f6e361f3e | 132 | LptimHandle.Init.Clock.Prescaler = LPTIM_PRESCALER_DIV1; |
AnnaBridge | 189:f392fc9709a3 | 133 | #endif |
AnnaBridge | 189:f392fc9709a3 | 134 | #else |
AnnaBridge | 189:f392fc9709a3 | 135 | LptimHandle.Init.Clock.Prescaler = LPTIM_PRESCALER_DIV1; |
AnnaBridge | 189:f392fc9709a3 | 136 | #endif /* MBED_CONF_TARGET_LPTICKER_LPTIM_CLOCK */ |
AnnaBridge | 181:57724642e740 | 137 | |
AnnaBridge | 181:57724642e740 | 138 | LptimHandle.Init.Trigger.Source = LPTIM_TRIGSOURCE_SOFTWARE; |
AnnaBridge | 181:57724642e740 | 139 | LptimHandle.Init.OutputPolarity = LPTIM_OUTPUTPOLARITY_HIGH; |
AnnaBridge | 181:57724642e740 | 140 | LptimHandle.Init.UpdateMode = LPTIM_UPDATE_IMMEDIATE; |
AnnaBridge | 181:57724642e740 | 141 | LptimHandle.Init.CounterSource = LPTIM_COUNTERSOURCE_INTERNAL; |
AnnaBridge | 189:f392fc9709a3 | 142 | #if defined (LPTIM_INPUT1SOURCE_GPIO) /* STM32L4 */ |
AnnaBridge | 181:57724642e740 | 143 | LptimHandle.Init.Input1Source = LPTIM_INPUT1SOURCE_GPIO; |
AnnaBridge | 181:57724642e740 | 144 | LptimHandle.Init.Input2Source = LPTIM_INPUT2SOURCE_GPIO; |
AnnaBridge | 189:f392fc9709a3 | 145 | #endif /* LPTIM_INPUT1SOURCE_GPIO */ |
AnnaBridge | 181:57724642e740 | 146 | |
AnnaBridge | 181:57724642e740 | 147 | if (HAL_LPTIM_Init(&LptimHandle) != HAL_OK) { |
AnnaBridge | 181:57724642e740 | 148 | error("HAL_LPTIM_Init ERROR\n"); |
AnnaBridge | 181:57724642e740 | 149 | return; |
AnnaBridge | 181:57724642e740 | 150 | } |
AnnaBridge | 181:57724642e740 | 151 | |
AnnaBridge | 181:57724642e740 | 152 | NVIC_SetVector(LPTIM1_IRQn, (uint32_t)LPTIM1_IRQHandler); |
AnnaBridge | 181:57724642e740 | 153 | |
AnnaBridge | 189:f392fc9709a3 | 154 | #if defined (__HAL_LPTIM_WAKEUPTIMER_EXTI_ENABLE_IT) |
AnnaBridge | 181:57724642e740 | 155 | /* EXTI lines are not configured by default */ |
AnnaBridge | 181:57724642e740 | 156 | __HAL_LPTIM_WAKEUPTIMER_EXTI_ENABLE_IT(); |
AnnaBridge | 181:57724642e740 | 157 | __HAL_LPTIM_WAKEUPTIMER_EXTI_ENABLE_RISING_EDGE(); |
AnnaBridge | 181:57724642e740 | 158 | #endif |
AnnaBridge | 181:57724642e740 | 159 | |
AnnaBridge | 181:57724642e740 | 160 | __HAL_LPTIM_ENABLE_IT(&LptimHandle, LPTIM_IT_CMPM); |
AnnaBridge | 181:57724642e740 | 161 | HAL_LPTIM_Counter_Start(&LptimHandle, 0xFFFF); |
AnnaBridge | 189:f392fc9709a3 | 162 | |
AnnaBridge | 189:f392fc9709a3 | 163 | /* Need to write a compare value in order to get LPTIM_FLAG_CMPOK in set_interrupt */ |
AnnaBridge | 189:f392fc9709a3 | 164 | __HAL_LPTIM_CLEAR_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK); |
AnnaBridge | 189:f392fc9709a3 | 165 | __HAL_LPTIM_COMPARE_SET(&LptimHandle, 0); |
AnnaBridge | 189:f392fc9709a3 | 166 | while (__HAL_LPTIM_GET_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK) == RESET) { |
AnnaBridge | 189:f392fc9709a3 | 167 | } |
AnnaBridge | 181:57724642e740 | 168 | } |
AnnaBridge | 181:57724642e740 | 169 | |
AnnaBridge | 181:57724642e740 | 170 | static void LPTIM1_IRQHandler(void) |
AnnaBridge | 181:57724642e740 | 171 | { |
AnnaBridge | 181:57724642e740 | 172 | LptimHandle.Instance = LPTIM1; |
AnnaBridge | 181:57724642e740 | 173 | |
AnnaBridge | 181:57724642e740 | 174 | if (lp_Fired) { |
AnnaBridge | 181:57724642e740 | 175 | lp_Fired = 0; |
AnnaBridge | 181:57724642e740 | 176 | if (irq_handler) { |
AnnaBridge | 181:57724642e740 | 177 | irq_handler(); |
AnnaBridge | 181:57724642e740 | 178 | } |
AnnaBridge | 181:57724642e740 | 179 | } |
AnnaBridge | 181:57724642e740 | 180 | |
AnnaBridge | 181:57724642e740 | 181 | /* Compare match interrupt */ |
AnnaBridge | 181:57724642e740 | 182 | if (__HAL_LPTIM_GET_FLAG(&LptimHandle, LPTIM_FLAG_CMPM) != RESET) { |
AnnaBridge | 181:57724642e740 | 183 | if (__HAL_LPTIM_GET_IT_SOURCE(&LptimHandle, LPTIM_IT_CMPM) != RESET) { |
AnnaBridge | 181:57724642e740 | 184 | /* Clear Compare match flag */ |
AnnaBridge | 181:57724642e740 | 185 | __HAL_LPTIM_CLEAR_FLAG(&LptimHandle, LPTIM_FLAG_CMPM); |
AnnaBridge | 181:57724642e740 | 186 | |
Anna Bridge |
186:707f6e361f3e | 187 | if (irq_handler) { |
Anna Bridge |
186:707f6e361f3e | 188 | irq_handler(); |
AnnaBridge | 181:57724642e740 | 189 | } |
AnnaBridge | 181:57724642e740 | 190 | } |
AnnaBridge | 181:57724642e740 | 191 | } |
AnnaBridge | 181:57724642e740 | 192 | |
AnnaBridge | 189:f392fc9709a3 | 193 | #if defined (__HAL_LPTIM_WAKEUPTIMER_EXTI_CLEAR_FLAG) |
AnnaBridge | 189:f392fc9709a3 | 194 | /* EXTI lines are not configured by default */ |
AnnaBridge | 181:57724642e740 | 195 | __HAL_LPTIM_WAKEUPTIMER_EXTI_CLEAR_FLAG(); |
AnnaBridge | 181:57724642e740 | 196 | #endif |
AnnaBridge | 181:57724642e740 | 197 | } |
AnnaBridge | 181:57724642e740 | 198 | |
AnnaBridge | 181:57724642e740 | 199 | uint32_t lp_ticker_read(void) |
AnnaBridge | 181:57724642e740 | 200 | { |
Anna Bridge |
186:707f6e361f3e | 201 | uint32_t lp_time = LPTIM1->CNT; |
Anna Bridge |
186:707f6e361f3e | 202 | /* Reading the LPTIM_CNT register may return unreliable values. |
Anna Bridge |
186:707f6e361f3e | 203 | It is necessary to perform two consecutive read accesses and verify that the two returned values are identical */ |
Anna Bridge |
186:707f6e361f3e | 204 | while (lp_time != LPTIM1->CNT) { |
Anna Bridge |
186:707f6e361f3e | 205 | lp_time = LPTIM1->CNT; |
Anna Bridge |
186:707f6e361f3e | 206 | } |
Anna Bridge |
186:707f6e361f3e | 207 | return lp_time; |
AnnaBridge | 181:57724642e740 | 208 | } |
AnnaBridge | 181:57724642e740 | 209 | |
AnnaBridge | 181:57724642e740 | 210 | void lp_ticker_set_interrupt(timestamp_t timestamp) |
AnnaBridge | 181:57724642e740 | 211 | { |
AnnaBridge | 181:57724642e740 | 212 | LptimHandle.Instance = LPTIM1; |
AnnaBridge | 181:57724642e740 | 213 | irq_handler = (void (*)(void))lp_ticker_irq_handler; |
AnnaBridge | 181:57724642e740 | 214 | |
AnnaBridge | 189:f392fc9709a3 | 215 | /* CMPOK is set by hardware to inform application that the APB bus write operation to the LPTIM_CMP register has been successfully completed */ |
AnnaBridge | 189:f392fc9709a3 | 216 | /* Any successive write before the CMPOK flag be set, will lead to unpredictable results */ |
AnnaBridge | 189:f392fc9709a3 | 217 | /* LPTICKER_DELAY_TICKS value prevents OS to call this set interrupt function before CMPOK */ |
AnnaBridge | 189:f392fc9709a3 | 218 | MBED_ASSERT(__HAL_LPTIM_GET_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK) == SET); |
AnnaBridge | 188:bcfe06ba3d64 | 219 | __HAL_LPTIM_CLEAR_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK); |
AnnaBridge | 188:bcfe06ba3d64 | 220 | __HAL_LPTIM_COMPARE_SET(&LptimHandle, timestamp); |
Anna Bridge |
186:707f6e361f3e | 221 | |
AnnaBridge | 188:bcfe06ba3d64 | 222 | lp_ticker_clear_interrupt(); |
AnnaBridge | 181:57724642e740 | 223 | |
Anna Bridge |
186:707f6e361f3e | 224 | NVIC_EnableIRQ(LPTIM1_IRQn); |
AnnaBridge | 181:57724642e740 | 225 | } |
AnnaBridge | 181:57724642e740 | 226 | |
AnnaBridge | 181:57724642e740 | 227 | void lp_ticker_fire_interrupt(void) |
AnnaBridge | 181:57724642e740 | 228 | { |
AnnaBridge | 181:57724642e740 | 229 | lp_Fired = 1; |
AnnaBridge | 188:bcfe06ba3d64 | 230 | irq_handler = (void (*)(void))lp_ticker_irq_handler; |
AnnaBridge | 181:57724642e740 | 231 | NVIC_SetPendingIRQ(LPTIM1_IRQn); |
Anna Bridge |
186:707f6e361f3e | 232 | NVIC_EnableIRQ(LPTIM1_IRQn); |
AnnaBridge | 181:57724642e740 | 233 | } |
AnnaBridge | 181:57724642e740 | 234 | |
AnnaBridge | 181:57724642e740 | 235 | void lp_ticker_disable_interrupt(void) |
AnnaBridge | 181:57724642e740 | 236 | { |
AnnaBridge | 187:0387e8f68319 | 237 | NVIC_DisableIRQ(LPTIM1_IRQn); |
AnnaBridge | 181:57724642e740 | 238 | LptimHandle.Instance = LPTIM1; |
AnnaBridge | 181:57724642e740 | 239 | } |
AnnaBridge | 181:57724642e740 | 240 | |
AnnaBridge | 181:57724642e740 | 241 | void lp_ticker_clear_interrupt(void) |
AnnaBridge | 181:57724642e740 | 242 | { |
AnnaBridge | 181:57724642e740 | 243 | LptimHandle.Instance = LPTIM1; |
AnnaBridge | 181:57724642e740 | 244 | __HAL_LPTIM_CLEAR_FLAG(&LptimHandle, LPTIM_FLAG_CMPM); |
Anna Bridge |
186:707f6e361f3e | 245 | NVIC_ClearPendingIRQ(LPTIM1_IRQn); |
AnnaBridge | 181:57724642e740 | 246 | } |
AnnaBridge | 181:57724642e740 | 247 | |
AnnaBridge | 188:bcfe06ba3d64 | 248 | void lp_ticker_free(void) |
AnnaBridge | 188:bcfe06ba3d64 | 249 | { |
AnnaBridge | 188:bcfe06ba3d64 | 250 | lp_ticker_disable_interrupt(); |
AnnaBridge | 188:bcfe06ba3d64 | 251 | } |
Anna Bridge |
186:707f6e361f3e | 252 | |
Anna Bridge |
186:707f6e361f3e | 253 | /*****************************************************************/ |
Anna Bridge |
186:707f6e361f3e | 254 | /* lpticker_lptim config is 0 or not defined in json config file */ |
Anna Bridge |
186:707f6e361f3e | 255 | /* LPTICKER is based on RTC wake up feature from ST drivers */ |
Anna Bridge |
186:707f6e361f3e | 256 | #else /* MBED_CONF_TARGET_LPTICKER_LPTIM */ |
Anna Bridge |
186:707f6e361f3e | 257 | |
Anna Bridge |
186:707f6e361f3e | 258 | #include "rtc_api_hal.h" |
Anna Bridge |
186:707f6e361f3e | 259 | |
AnnaBridge | 187:0387e8f68319 | 260 | const ticker_info_t *lp_ticker_get_info() |
Anna Bridge |
186:707f6e361f3e | 261 | { |
Anna Bridge |
186:707f6e361f3e | 262 | static const ticker_info_t info = { |
AnnaBridge | 187:0387e8f68319 | 263 | RTC_CLOCK / 4, // RTC_WAKEUPCLOCK_RTCCLK_DIV4 |
Anna Bridge |
186:707f6e361f3e | 264 | 32 |
Anna Bridge |
186:707f6e361f3e | 265 | }; |
Anna Bridge |
186:707f6e361f3e | 266 | return &info; |
Anna Bridge |
186:707f6e361f3e | 267 | } |
AnnaBridge | 181:57724642e740 | 268 | |
<> | 154:37f96f9d4de2 | 269 | void lp_ticker_init(void) |
<> | 154:37f96f9d4de2 | 270 | { |
<> | 154:37f96f9d4de2 | 271 | rtc_init(); |
Anna Bridge |
186:707f6e361f3e | 272 | lp_ticker_disable_interrupt(); |
<> | 154:37f96f9d4de2 | 273 | } |
<> | 154:37f96f9d4de2 | 274 | |
<> | 154:37f96f9d4de2 | 275 | uint32_t lp_ticker_read(void) |
<> | 154:37f96f9d4de2 | 276 | { |
Anna Bridge |
186:707f6e361f3e | 277 | return rtc_read_lp(); |
<> | 154:37f96f9d4de2 | 278 | } |
<> | 154:37f96f9d4de2 | 279 | |
<> | 154:37f96f9d4de2 | 280 | void lp_ticker_set_interrupt(timestamp_t timestamp) |
<> | 154:37f96f9d4de2 | 281 | { |
Anna Bridge |
186:707f6e361f3e | 282 | rtc_set_wake_up_timer(timestamp); |
<> | 154:37f96f9d4de2 | 283 | } |
<> | 154:37f96f9d4de2 | 284 | |
AnnaBridge | 174:b96e65c34a4d | 285 | void lp_ticker_fire_interrupt(void) |
AnnaBridge | 174:b96e65c34a4d | 286 | { |
Anna Bridge |
186:707f6e361f3e | 287 | rtc_fire_interrupt(); |
AnnaBridge | 174:b96e65c34a4d | 288 | } |
AnnaBridge | 174:b96e65c34a4d | 289 | |
<> | 154:37f96f9d4de2 | 290 | void lp_ticker_disable_interrupt(void) |
<> | 154:37f96f9d4de2 | 291 | { |
<> | 154:37f96f9d4de2 | 292 | rtc_deactivate_wake_up_timer(); |
<> | 154:37f96f9d4de2 | 293 | } |
<> | 154:37f96f9d4de2 | 294 | |
<> | 154:37f96f9d4de2 | 295 | void lp_ticker_clear_interrupt(void) |
<> | 154:37f96f9d4de2 | 296 | { |
AnnaBridge | 188:bcfe06ba3d64 | 297 | lp_ticker_disable_interrupt(); |
AnnaBridge | 188:bcfe06ba3d64 | 298 | } |
AnnaBridge | 188:bcfe06ba3d64 | 299 | |
AnnaBridge | 188:bcfe06ba3d64 | 300 | void lp_ticker_free(void) |
AnnaBridge | 188:bcfe06ba3d64 | 301 | { |
AnnaBridge | 188:bcfe06ba3d64 | 302 | lp_ticker_disable_interrupt(); |
<> | 154:37f96f9d4de2 | 303 | } |
<> | 154:37f96f9d4de2 | 304 | |
Anna Bridge |
186:707f6e361f3e | 305 | #endif /* MBED_CONF_TARGET_LPTICKER_LPTIM */ |
AnnaBridge | 181:57724642e740 | 306 | |
Anna Bridge |
186:707f6e361f3e | 307 | #endif /* DEVICE_LPTICKER */ |