shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

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targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_rtc.c@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
126:549ba18ddd81 
test with CLOCK_SETUP = 0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 126:549ba18ddd81 1 /**
mbed_official 126:549ba18ddd81 2 ******************************************************************************
mbed_official 126:549ba18ddd81 3 * @file stm32f10x_rtc.c
mbed_official 126:549ba18ddd81 4 * @author MCD Application Team
mbed_official 126:549ba18ddd81 5 * @version V3.6.1
mbed_official 126:549ba18ddd81 6 * @date 05-March-2012
mbed_official 126:549ba18ddd81 7 * @brief This file provides all the RTC firmware functions.
mbed_official 126:549ba18ddd81 8 *******************************************************************************
mbed_official 126:549ba18ddd81 9 * Copyright (c) 2014, STMicroelectronics
mbed_official 126:549ba18ddd81 10 * All rights reserved.
mbed_official 126:549ba18ddd81 11 *
mbed_official 126:549ba18ddd81 12 * Redistribution and use in source and binary forms, with or without
mbed_official 126:549ba18ddd81 13 * modification, are permitted provided that the following conditions are met:
mbed_official 126:549ba18ddd81 14 *
mbed_official 126:549ba18ddd81 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 126:549ba18ddd81 16 * this list of conditions and the following disclaimer.
mbed_official 126:549ba18ddd81 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 126:549ba18ddd81 18 * this list of conditions and the following disclaimer in the documentation
mbed_official 126:549ba18ddd81 19 * and/or other materials provided with the distribution.
mbed_official 126:549ba18ddd81 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 126:549ba18ddd81 21 * may be used to endorse or promote products derived from this software
mbed_official 126:549ba18ddd81 22 * without specific prior written permission.
mbed_official 126:549ba18ddd81 23 *
mbed_official 126:549ba18ddd81 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 126:549ba18ddd81 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 126:549ba18ddd81 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 126:549ba18ddd81 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 126:549ba18ddd81 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 126:549ba18ddd81 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 126:549ba18ddd81 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 126:549ba18ddd81 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 126:549ba18ddd81 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 126:549ba18ddd81 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 126:549ba18ddd81 34 *******************************************************************************
mbed_official 126:549ba18ddd81 35 */
mbed_official 126:549ba18ddd81 36
mbed_official 126:549ba18ddd81 37 /* Includes ------------------------------------------------------------------*/
mbed_official 126:549ba18ddd81 38 #include "stm32f10x_rtc.h"
mbed_official 126:549ba18ddd81 39
mbed_official 126:549ba18ddd81 40 /** @addtogroup STM32F10x_StdPeriph_Driver
mbed_official 126:549ba18ddd81 41 * @{
mbed_official 126:549ba18ddd81 42 */
mbed_official 126:549ba18ddd81 43
mbed_official 126:549ba18ddd81 44 /** @defgroup RTC
mbed_official 126:549ba18ddd81 45 * @brief RTC driver modules
mbed_official 126:549ba18ddd81 46 * @{
mbed_official 126:549ba18ddd81 47 */
mbed_official 126:549ba18ddd81 48
mbed_official 126:549ba18ddd81 49 /** @defgroup RTC_Private_TypesDefinitions
mbed_official 126:549ba18ddd81 50 * @{
mbed_official 126:549ba18ddd81 51 */
mbed_official 126:549ba18ddd81 52 /**
mbed_official 126:549ba18ddd81 53 * @}
mbed_official 126:549ba18ddd81 54 */
mbed_official 126:549ba18ddd81 55
mbed_official 126:549ba18ddd81 56 /** @defgroup RTC_Private_Defines
mbed_official 126:549ba18ddd81 57 * @{
mbed_official 126:549ba18ddd81 58 */
mbed_official 126:549ba18ddd81 59 #define RTC_LSB_MASK ((uint32_t)0x0000FFFF) /*!< RTC LSB Mask */
mbed_official 126:549ba18ddd81 60 #define PRLH_MSB_MASK ((uint32_t)0x000F0000) /*!< RTC Prescaler MSB Mask */
mbed_official 126:549ba18ddd81 61
mbed_official 126:549ba18ddd81 62 /**
mbed_official 126:549ba18ddd81 63 * @}
mbed_official 126:549ba18ddd81 64 */
mbed_official 126:549ba18ddd81 65
mbed_official 126:549ba18ddd81 66 /** @defgroup RTC_Private_Macros
mbed_official 126:549ba18ddd81 67 * @{
mbed_official 126:549ba18ddd81 68 */
mbed_official 126:549ba18ddd81 69
mbed_official 126:549ba18ddd81 70 /**
mbed_official 126:549ba18ddd81 71 * @}
mbed_official 126:549ba18ddd81 72 */
mbed_official 126:549ba18ddd81 73
mbed_official 126:549ba18ddd81 74 /** @defgroup RTC_Private_Variables
mbed_official 126:549ba18ddd81 75 * @{
mbed_official 126:549ba18ddd81 76 */
mbed_official 126:549ba18ddd81 77
mbed_official 126:549ba18ddd81 78 /**
mbed_official 126:549ba18ddd81 79 * @}
mbed_official 126:549ba18ddd81 80 */
mbed_official 126:549ba18ddd81 81
mbed_official 126:549ba18ddd81 82 /** @defgroup RTC_Private_FunctionPrototypes
mbed_official 126:549ba18ddd81 83 * @{
mbed_official 126:549ba18ddd81 84 */
mbed_official 126:549ba18ddd81 85
mbed_official 126:549ba18ddd81 86 /**
mbed_official 126:549ba18ddd81 87 * @}
mbed_official 126:549ba18ddd81 88 */
mbed_official 126:549ba18ddd81 89
mbed_official 126:549ba18ddd81 90 /** @defgroup RTC_Private_Functions
mbed_official 126:549ba18ddd81 91 * @{
mbed_official 126:549ba18ddd81 92 */
mbed_official 126:549ba18ddd81 93
mbed_official 126:549ba18ddd81 94 /**
mbed_official 126:549ba18ddd81 95 * @brief Enables or disables the specified RTC interrupts.
mbed_official 126:549ba18ddd81 96 * @param RTC_IT: specifies the RTC interrupts sources to be enabled or disabled.
mbed_official 126:549ba18ddd81 97 * This parameter can be any combination of the following values:
mbed_official 126:549ba18ddd81 98 * @arg RTC_IT_OW: Overflow interrupt
mbed_official 126:549ba18ddd81 99 * @arg RTC_IT_ALR: Alarm interrupt
mbed_official 126:549ba18ddd81 100 * @arg RTC_IT_SEC: Second interrupt
mbed_official 126:549ba18ddd81 101 * @param NewState: new state of the specified RTC interrupts.
mbed_official 126:549ba18ddd81 102 * This parameter can be: ENABLE or DISABLE.
mbed_official 126:549ba18ddd81 103 * @retval None
mbed_official 126:549ba18ddd81 104 */
mbed_official 126:549ba18ddd81 105 void RTC_ITConfig(uint16_t RTC_IT, FunctionalState NewState)
mbed_official 126:549ba18ddd81 106 {
mbed_official 126:549ba18ddd81 107 /* Check the parameters */
mbed_official 126:549ba18ddd81 108 assert_param(IS_RTC_IT(RTC_IT));
mbed_official 126:549ba18ddd81 109 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 126:549ba18ddd81 110
mbed_official 126:549ba18ddd81 111 if (NewState != DISABLE)
mbed_official 126:549ba18ddd81 112 {
mbed_official 126:549ba18ddd81 113 RTC->CRH |= RTC_IT;
mbed_official 126:549ba18ddd81 114 }
mbed_official 126:549ba18ddd81 115 else
mbed_official 126:549ba18ddd81 116 {
mbed_official 126:549ba18ddd81 117 RTC->CRH &= (uint16_t)~RTC_IT;
mbed_official 126:549ba18ddd81 118 }
mbed_official 126:549ba18ddd81 119 }
mbed_official 126:549ba18ddd81 120
mbed_official 126:549ba18ddd81 121 /**
mbed_official 126:549ba18ddd81 122 * @brief Enters the RTC configuration mode.
mbed_official 126:549ba18ddd81 123 * @param None
mbed_official 126:549ba18ddd81 124 * @retval None
mbed_official 126:549ba18ddd81 125 */
mbed_official 126:549ba18ddd81 126 void RTC_EnterConfigMode(void)
mbed_official 126:549ba18ddd81 127 {
mbed_official 126:549ba18ddd81 128 /* Set the CNF flag to enter in the Configuration Mode */
mbed_official 126:549ba18ddd81 129 RTC->CRL |= RTC_CRL_CNF;
mbed_official 126:549ba18ddd81 130 }
mbed_official 126:549ba18ddd81 131
mbed_official 126:549ba18ddd81 132 /**
mbed_official 126:549ba18ddd81 133 * @brief Exits from the RTC configuration mode.
mbed_official 126:549ba18ddd81 134 * @param None
mbed_official 126:549ba18ddd81 135 * @retval None
mbed_official 126:549ba18ddd81 136 */
mbed_official 126:549ba18ddd81 137 void RTC_ExitConfigMode(void)
mbed_official 126:549ba18ddd81 138 {
mbed_official 126:549ba18ddd81 139 /* Reset the CNF flag to exit from the Configuration Mode */
mbed_official 126:549ba18ddd81 140 RTC->CRL &= (uint16_t)~((uint16_t)RTC_CRL_CNF);
mbed_official 126:549ba18ddd81 141 }
mbed_official 126:549ba18ddd81 142
mbed_official 126:549ba18ddd81 143 /**
mbed_official 126:549ba18ddd81 144 * @brief Gets the RTC counter value.
mbed_official 126:549ba18ddd81 145 * @param None
mbed_official 126:549ba18ddd81 146 * @retval RTC counter value.
mbed_official 126:549ba18ddd81 147 */
mbed_official 126:549ba18ddd81 148 uint32_t RTC_GetCounter(void)
mbed_official 126:549ba18ddd81 149 {
mbed_official 126:549ba18ddd81 150 uint16_t high1 = 0, high2 = 0, low = 0;
mbed_official 126:549ba18ddd81 151
mbed_official 126:549ba18ddd81 152 high1 = RTC->CNTH;
mbed_official 126:549ba18ddd81 153 low = RTC->CNTL;
mbed_official 126:549ba18ddd81 154 high2 = RTC->CNTH;
mbed_official 126:549ba18ddd81 155
mbed_official 126:549ba18ddd81 156 if (high1 != high2)
mbed_official 126:549ba18ddd81 157 { /* In this case the counter roll over during reading of CNTL and CNTH registers,
mbed_official 126:549ba18ddd81 158 read again CNTL register then return the counter value */
mbed_official 126:549ba18ddd81 159 return (((uint32_t) high2 << 16 ) | RTC->CNTL);
mbed_official 126:549ba18ddd81 160 }
mbed_official 126:549ba18ddd81 161 else
mbed_official 126:549ba18ddd81 162 { /* No counter roll over during reading of CNTL and CNTH registers, counter
mbed_official 126:549ba18ddd81 163 value is equal to first value of CNTL and CNTH */
mbed_official 126:549ba18ddd81 164 return (((uint32_t) high1 << 16 ) | low);
mbed_official 126:549ba18ddd81 165 }
mbed_official 126:549ba18ddd81 166 }
mbed_official 126:549ba18ddd81 167
mbed_official 126:549ba18ddd81 168 /**
mbed_official 126:549ba18ddd81 169 * @brief Sets the RTC counter value.
mbed_official 126:549ba18ddd81 170 * @param CounterValue: RTC counter new value.
mbed_official 126:549ba18ddd81 171 * @retval None
mbed_official 126:549ba18ddd81 172 */
mbed_official 126:549ba18ddd81 173 void RTC_SetCounter(uint32_t CounterValue)
mbed_official 126:549ba18ddd81 174 {
mbed_official 126:549ba18ddd81 175 RTC_EnterConfigMode();
mbed_official 126:549ba18ddd81 176 /* Set RTC COUNTER MSB word */
mbed_official 126:549ba18ddd81 177 RTC->CNTH = CounterValue >> 16;
mbed_official 126:549ba18ddd81 178 /* Set RTC COUNTER LSB word */
mbed_official 126:549ba18ddd81 179 RTC->CNTL = (CounterValue & RTC_LSB_MASK);
mbed_official 126:549ba18ddd81 180 RTC_ExitConfigMode();
mbed_official 126:549ba18ddd81 181 }
mbed_official 126:549ba18ddd81 182
mbed_official 126:549ba18ddd81 183 /**
mbed_official 126:549ba18ddd81 184 * @brief Sets the RTC prescaler value.
mbed_official 126:549ba18ddd81 185 * @param PrescalerValue: RTC prescaler new value.
mbed_official 126:549ba18ddd81 186 * @retval None
mbed_official 126:549ba18ddd81 187 */
mbed_official 126:549ba18ddd81 188 void RTC_SetPrescaler(uint32_t PrescalerValue)
mbed_official 126:549ba18ddd81 189 {
mbed_official 126:549ba18ddd81 190 /* Check the parameters */
mbed_official 126:549ba18ddd81 191 assert_param(IS_RTC_PRESCALER(PrescalerValue));
mbed_official 126:549ba18ddd81 192
mbed_official 126:549ba18ddd81 193 RTC_EnterConfigMode();
mbed_official 126:549ba18ddd81 194 /* Set RTC PRESCALER MSB word */
mbed_official 126:549ba18ddd81 195 RTC->PRLH = (PrescalerValue & PRLH_MSB_MASK) >> 16;
mbed_official 126:549ba18ddd81 196 /* Set RTC PRESCALER LSB word */
mbed_official 126:549ba18ddd81 197 RTC->PRLL = (PrescalerValue & RTC_LSB_MASK);
mbed_official 126:549ba18ddd81 198 RTC_ExitConfigMode();
mbed_official 126:549ba18ddd81 199 }
mbed_official 126:549ba18ddd81 200
mbed_official 126:549ba18ddd81 201 /**
mbed_official 126:549ba18ddd81 202 * @brief Sets the RTC alarm value.
mbed_official 126:549ba18ddd81 203 * @param AlarmValue: RTC alarm new value.
mbed_official 126:549ba18ddd81 204 * @retval None
mbed_official 126:549ba18ddd81 205 */
mbed_official 126:549ba18ddd81 206 void RTC_SetAlarm(uint32_t AlarmValue)
mbed_official 126:549ba18ddd81 207 {
mbed_official 126:549ba18ddd81 208 RTC_EnterConfigMode();
mbed_official 126:549ba18ddd81 209 /* Set the ALARM MSB word */
mbed_official 126:549ba18ddd81 210 RTC->ALRH = AlarmValue >> 16;
mbed_official 126:549ba18ddd81 211 /* Set the ALARM LSB word */
mbed_official 126:549ba18ddd81 212 RTC->ALRL = (AlarmValue & RTC_LSB_MASK);
mbed_official 126:549ba18ddd81 213 RTC_ExitConfigMode();
mbed_official 126:549ba18ddd81 214 }
mbed_official 126:549ba18ddd81 215
mbed_official 126:549ba18ddd81 216 /**
mbed_official 126:549ba18ddd81 217 * @brief Gets the RTC divider value.
mbed_official 126:549ba18ddd81 218 * @param None
mbed_official 126:549ba18ddd81 219 * @retval RTC Divider value.
mbed_official 126:549ba18ddd81 220 */
mbed_official 126:549ba18ddd81 221 uint32_t RTC_GetDivider(void)
mbed_official 126:549ba18ddd81 222 {
mbed_official 126:549ba18ddd81 223 uint32_t tmp = 0x00;
mbed_official 126:549ba18ddd81 224 tmp = ((uint32_t)RTC->DIVH & (uint32_t)0x000F) << 16;
mbed_official 126:549ba18ddd81 225 tmp |= RTC->DIVL;
mbed_official 126:549ba18ddd81 226 return tmp;
mbed_official 126:549ba18ddd81 227 }
mbed_official 126:549ba18ddd81 228
mbed_official 126:549ba18ddd81 229 /**
mbed_official 126:549ba18ddd81 230 * @brief Waits until last write operation on RTC registers has finished.
mbed_official 126:549ba18ddd81 231 * @note This function must be called before any write to RTC registers.
mbed_official 126:549ba18ddd81 232 * @param None
mbed_official 126:549ba18ddd81 233 * @retval None
mbed_official 126:549ba18ddd81 234 */
mbed_official 126:549ba18ddd81 235 void RTC_WaitForLastTask(void)
mbed_official 126:549ba18ddd81 236 {
mbed_official 126:549ba18ddd81 237 /* Loop until RTOFF flag is set */
mbed_official 126:549ba18ddd81 238 while ((RTC->CRL & RTC_FLAG_RTOFF) == (uint16_t)RESET)
mbed_official 126:549ba18ddd81 239 {
mbed_official 126:549ba18ddd81 240 }
mbed_official 126:549ba18ddd81 241 }
mbed_official 126:549ba18ddd81 242
mbed_official 126:549ba18ddd81 243 /**
mbed_official 126:549ba18ddd81 244 * @brief Waits until the RTC registers (RTC_CNT, RTC_ALR and RTC_PRL)
mbed_official 126:549ba18ddd81 245 * are synchronized with RTC APB clock.
mbed_official 126:549ba18ddd81 246 * @note This function must be called before any read operation after an APB reset
mbed_official 126:549ba18ddd81 247 * or an APB clock stop.
mbed_official 126:549ba18ddd81 248 * @param None
mbed_official 126:549ba18ddd81 249 * @retval None
mbed_official 126:549ba18ddd81 250 */
mbed_official 126:549ba18ddd81 251 void RTC_WaitForSynchro(void)
mbed_official 126:549ba18ddd81 252 {
mbed_official 126:549ba18ddd81 253 /* Clear RSF flag */
mbed_official 126:549ba18ddd81 254 RTC->CRL &= (uint16_t)~RTC_FLAG_RSF;
mbed_official 126:549ba18ddd81 255 /* Loop until RSF flag is set */
mbed_official 126:549ba18ddd81 256 while ((RTC->CRL & RTC_FLAG_RSF) == (uint16_t)RESET)
mbed_official 126:549ba18ddd81 257 {
mbed_official 126:549ba18ddd81 258 }
mbed_official 126:549ba18ddd81 259 }
mbed_official 126:549ba18ddd81 260
mbed_official 126:549ba18ddd81 261 /**
mbed_official 126:549ba18ddd81 262 * @brief Checks whether the specified RTC flag is set or not.
mbed_official 126:549ba18ddd81 263 * @param RTC_FLAG: specifies the flag to check.
mbed_official 126:549ba18ddd81 264 * This parameter can be one the following values:
mbed_official 126:549ba18ddd81 265 * @arg RTC_FLAG_RTOFF: RTC Operation OFF flag
mbed_official 126:549ba18ddd81 266 * @arg RTC_FLAG_RSF: Registers Synchronized flag
mbed_official 126:549ba18ddd81 267 * @arg RTC_FLAG_OW: Overflow flag
mbed_official 126:549ba18ddd81 268 * @arg RTC_FLAG_ALR: Alarm flag
mbed_official 126:549ba18ddd81 269 * @arg RTC_FLAG_SEC: Second flag
mbed_official 126:549ba18ddd81 270 * @retval The new state of RTC_FLAG (SET or RESET).
mbed_official 126:549ba18ddd81 271 */
mbed_official 126:549ba18ddd81 272 FlagStatus RTC_GetFlagStatus(uint16_t RTC_FLAG)
mbed_official 126:549ba18ddd81 273 {
mbed_official 126:549ba18ddd81 274 FlagStatus bitstatus = RESET;
mbed_official 126:549ba18ddd81 275
mbed_official 126:549ba18ddd81 276 /* Check the parameters */
mbed_official 126:549ba18ddd81 277 assert_param(IS_RTC_GET_FLAG(RTC_FLAG));
mbed_official 126:549ba18ddd81 278
mbed_official 126:549ba18ddd81 279 if ((RTC->CRL & RTC_FLAG) != (uint16_t)RESET)
mbed_official 126:549ba18ddd81 280 {
mbed_official 126:549ba18ddd81 281 bitstatus = SET;
mbed_official 126:549ba18ddd81 282 }
mbed_official 126:549ba18ddd81 283 else
mbed_official 126:549ba18ddd81 284 {
mbed_official 126:549ba18ddd81 285 bitstatus = RESET;
mbed_official 126:549ba18ddd81 286 }
mbed_official 126:549ba18ddd81 287 return bitstatus;
mbed_official 126:549ba18ddd81 288 }
mbed_official 126:549ba18ddd81 289
mbed_official 126:549ba18ddd81 290 /**
mbed_official 126:549ba18ddd81 291 * @brief Clears the RTC's pending flags.
mbed_official 126:549ba18ddd81 292 * @param RTC_FLAG: specifies the flag to clear.
mbed_official 126:549ba18ddd81 293 * This parameter can be any combination of the following values:
mbed_official 126:549ba18ddd81 294 * @arg RTC_FLAG_RSF: Registers Synchronized flag. This flag is cleared only after
mbed_official 126:549ba18ddd81 295 * an APB reset or an APB Clock stop.
mbed_official 126:549ba18ddd81 296 * @arg RTC_FLAG_OW: Overflow flag
mbed_official 126:549ba18ddd81 297 * @arg RTC_FLAG_ALR: Alarm flag
mbed_official 126:549ba18ddd81 298 * @arg RTC_FLAG_SEC: Second flag
mbed_official 126:549ba18ddd81 299 * @retval None
mbed_official 126:549ba18ddd81 300 */
mbed_official 126:549ba18ddd81 301 void RTC_ClearFlag(uint16_t RTC_FLAG)
mbed_official 126:549ba18ddd81 302 {
mbed_official 126:549ba18ddd81 303 /* Check the parameters */
mbed_official 126:549ba18ddd81 304 assert_param(IS_RTC_CLEAR_FLAG(RTC_FLAG));
mbed_official 126:549ba18ddd81 305
mbed_official 126:549ba18ddd81 306 /* Clear the corresponding RTC flag */
mbed_official 126:549ba18ddd81 307 RTC->CRL &= (uint16_t)~RTC_FLAG;
mbed_official 126:549ba18ddd81 308 }
mbed_official 126:549ba18ddd81 309
mbed_official 126:549ba18ddd81 310 /**
mbed_official 126:549ba18ddd81 311 * @brief Checks whether the specified RTC interrupt has occurred or not.
mbed_official 126:549ba18ddd81 312 * @param RTC_IT: specifies the RTC interrupts sources to check.
mbed_official 126:549ba18ddd81 313 * This parameter can be one of the following values:
mbed_official 126:549ba18ddd81 314 * @arg RTC_IT_OW: Overflow interrupt
mbed_official 126:549ba18ddd81 315 * @arg RTC_IT_ALR: Alarm interrupt
mbed_official 126:549ba18ddd81 316 * @arg RTC_IT_SEC: Second interrupt
mbed_official 126:549ba18ddd81 317 * @retval The new state of the RTC_IT (SET or RESET).
mbed_official 126:549ba18ddd81 318 */
mbed_official 126:549ba18ddd81 319 ITStatus RTC_GetITStatus(uint16_t RTC_IT)
mbed_official 126:549ba18ddd81 320 {
mbed_official 126:549ba18ddd81 321 ITStatus bitstatus = RESET;
mbed_official 126:549ba18ddd81 322 /* Check the parameters */
mbed_official 126:549ba18ddd81 323 assert_param(IS_RTC_GET_IT(RTC_IT));
mbed_official 126:549ba18ddd81 324
mbed_official 126:549ba18ddd81 325 bitstatus = (ITStatus)(RTC->CRL & RTC_IT);
mbed_official 126:549ba18ddd81 326 if (((RTC->CRH & RTC_IT) != (uint16_t)RESET) && (bitstatus != (uint16_t)RESET))
mbed_official 126:549ba18ddd81 327 {
mbed_official 126:549ba18ddd81 328 bitstatus = SET;
mbed_official 126:549ba18ddd81 329 }
mbed_official 126:549ba18ddd81 330 else
mbed_official 126:549ba18ddd81 331 {
mbed_official 126:549ba18ddd81 332 bitstatus = RESET;
mbed_official 126:549ba18ddd81 333 }
mbed_official 126:549ba18ddd81 334 return bitstatus;
mbed_official 126:549ba18ddd81 335 }
mbed_official 126:549ba18ddd81 336
mbed_official 126:549ba18ddd81 337 /**
mbed_official 126:549ba18ddd81 338 * @brief Clears the RTC's interrupt pending bits.
mbed_official 126:549ba18ddd81 339 * @param RTC_IT: specifies the interrupt pending bit to clear.
mbed_official 126:549ba18ddd81 340 * This parameter can be any combination of the following values:
mbed_official 126:549ba18ddd81 341 * @arg RTC_IT_OW: Overflow interrupt
mbed_official 126:549ba18ddd81 342 * @arg RTC_IT_ALR: Alarm interrupt
mbed_official 126:549ba18ddd81 343 * @arg RTC_IT_SEC: Second interrupt
mbed_official 126:549ba18ddd81 344 * @retval None
mbed_official 126:549ba18ddd81 345 */
mbed_official 126:549ba18ddd81 346 void RTC_ClearITPendingBit(uint16_t RTC_IT)
mbed_official 126:549ba18ddd81 347 {
mbed_official 126:549ba18ddd81 348 /* Check the parameters */
mbed_official 126:549ba18ddd81 349 assert_param(IS_RTC_IT(RTC_IT));
mbed_official 126:549ba18ddd81 350
mbed_official 126:549ba18ddd81 351 /* Clear the corresponding RTC pending bit */
mbed_official 126:549ba18ddd81 352 RTC->CRL &= (uint16_t)~RTC_IT;
mbed_official 126:549ba18ddd81 353 }
mbed_official 126:549ba18ddd81 354
mbed_official 126:549ba18ddd81 355 /**
mbed_official 126:549ba18ddd81 356 * @}
mbed_official 126:549ba18ddd81 357 */
mbed_official 126:549ba18ddd81 358
mbed_official 126:549ba18ddd81 359 /**
mbed_official 126:549ba18ddd81 360 * @}
mbed_official 126:549ba18ddd81 361 */
mbed_official 126:549ba18ddd81 362
mbed_official 126:549ba18ddd81 363 /**
mbed_official 126:549ba18ddd81 364 * @}
mbed_official 126:549ba18ddd81 365 */
mbed_official 126:549ba18ddd81 366
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