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targets/cmsis/TARGET_STM/TARGET_STM32L1/stm32l1xx_hal_rcc_ex.c@394:83f921546702, 2014-11-07 (annotated)

Committer:
mbed_official
Date:
Fri Nov 07 15:45:07 2014 +0000
Revision:
394:83f921546702
Parent:
targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_rcc_ex.c@354:e67efb2aab0e 
Synchronized with git revision aab52cb7ec5a665869e507dd988bbfd55b7e087e



Full URL: https://github.com/mbedmicro/mbed/commit/aab52cb7ec5a665869e507dd988bbfd55b7e087e/



Tests: Fix cpputest testrunner

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UserRevisionLine numberNew contents of line
mbed_official 354:e67efb2aab0e 1 /**
mbed_official 354:e67efb2aab0e 2 ******************************************************************************
mbed_official 354:e67efb2aab0e 3 * @file stm32l1xx_hal_rcc_ex.c
mbed_official 354:e67efb2aab0e 4 * @author MCD Application Team
mbed_official 354:e67efb2aab0e 5 * @version V1.0.0
mbed_official 354:e67efb2aab0e 6 * @date 5-September-2014
mbed_official 354:e67efb2aab0e 7 * @brief Extended RCC HAL module driver.
mbed_official 354:e67efb2aab0e 8 *
mbed_official 354:e67efb2aab0e 9 * This file provides firmware functions to manage the following
mbed_official 354:e67efb2aab0e 10 * functionalities RCC extension peripheral:
mbed_official 354:e67efb2aab0e 11 * + Extended Peripheral Control functions
mbed_official 354:e67efb2aab0e 12 *
mbed_official 354:e67efb2aab0e 13 ******************************************************************************
mbed_official 354:e67efb2aab0e 14 * @attention
mbed_official 354:e67efb2aab0e 15 *
mbed_official 354:e67efb2aab0e 16 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 354:e67efb2aab0e 17 *
mbed_official 354:e67efb2aab0e 18 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 354:e67efb2aab0e 19 * are permitted provided that the following conditions are met:
mbed_official 354:e67efb2aab0e 20 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 354:e67efb2aab0e 21 * this list of conditions and the following disclaimer.
mbed_official 354:e67efb2aab0e 22 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 354:e67efb2aab0e 23 * this list of conditions and the following disclaimer in the documentation
mbed_official 354:e67efb2aab0e 24 * and/or other materials provided with the distribution.
mbed_official 354:e67efb2aab0e 25 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 354:e67efb2aab0e 26 * may be used to endorse or promote products derived from this software
mbed_official 354:e67efb2aab0e 27 * without specific prior written permission.
mbed_official 354:e67efb2aab0e 28 *
mbed_official 354:e67efb2aab0e 29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 354:e67efb2aab0e 30 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 354:e67efb2aab0e 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 354:e67efb2aab0e 32 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 354:e67efb2aab0e 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 354:e67efb2aab0e 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 354:e67efb2aab0e 35 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 354:e67efb2aab0e 36 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 354:e67efb2aab0e 37 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 354:e67efb2aab0e 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 354:e67efb2aab0e 39 *
mbed_official 354:e67efb2aab0e 40 ******************************************************************************
mbed_official 354:e67efb2aab0e 41 */
mbed_official 354:e67efb2aab0e 42
mbed_official 354:e67efb2aab0e 43 /* Includes ------------------------------------------------------------------*/
mbed_official 354:e67efb2aab0e 44 #include "stm32l1xx_hal.h"
mbed_official 354:e67efb2aab0e 45
mbed_official 354:e67efb2aab0e 46 /** @addtogroup STM32L1xx_HAL_Driver
mbed_official 354:e67efb2aab0e 47 * @{
mbed_official 354:e67efb2aab0e 48 */
mbed_official 354:e67efb2aab0e 49
mbed_official 354:e67efb2aab0e 50 /** @defgroup RCCEx RCCEx
mbed_official 354:e67efb2aab0e 51 * @brief RCC Extension HAL module driver
mbed_official 354:e67efb2aab0e 52 * @{
mbed_official 354:e67efb2aab0e 53 */
mbed_official 354:e67efb2aab0e 54
mbed_official 354:e67efb2aab0e 55 #ifdef HAL_RCC_MODULE_ENABLED
mbed_official 354:e67efb2aab0e 56
mbed_official 354:e67efb2aab0e 57 /* Private typedef -----------------------------------------------------------*/
mbed_official 354:e67efb2aab0e 58 /* Private define ------------------------------------------------------------*/
mbed_official 354:e67efb2aab0e 59 /* Private macro -------------------------------------------------------------*/
mbed_official 354:e67efb2aab0e 60 /* Private variables ---------------------------------------------------------*/
mbed_official 354:e67efb2aab0e 61 /* Private function prototypes -----------------------------------------------*/
mbed_official 354:e67efb2aab0e 62 /* Private functions ---------------------------------------------------------*/
mbed_official 354:e67efb2aab0e 63
mbed_official 354:e67efb2aab0e 64 /** @defgroup RCCEx_Private_Functions RCCEx Exported Functions
mbed_official 354:e67efb2aab0e 65 * @{
mbed_official 354:e67efb2aab0e 66 */
mbed_official 354:e67efb2aab0e 67
mbed_official 354:e67efb2aab0e 68 /** @defgroup RCCEx_Exported_Functions_Group1 Extended Peripheral Control functions
mbed_official 354:e67efb2aab0e 69 * @brief Extended Peripheral Control functions
mbed_official 354:e67efb2aab0e 70 *
mbed_official 354:e67efb2aab0e 71 @verbatim
mbed_official 354:e67efb2aab0e 72 ===============================================================================
mbed_official 354:e67efb2aab0e 73 ##### Extended Peripheral Control functions #####
mbed_official 354:e67efb2aab0e 74 ===============================================================================
mbed_official 354:e67efb2aab0e 75 [..]
mbed_official 354:e67efb2aab0e 76 This subsection provides a set of functions allowing to control the RCC Clocks
mbed_official 354:e67efb2aab0e 77 frequencies.
mbed_official 354:e67efb2aab0e 78 [..]
mbed_official 354:e67efb2aab0e 79 (@) Important note: Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to
mbed_official 354:e67efb2aab0e 80 select the RTC clock source; in this case the Backup domain will be reset in
mbed_official 354:e67efb2aab0e 81 order to modify the RTC Clock source, as consequence RTC registers (including
mbed_official 354:e67efb2aab0e 82 the backup registers) and RCC_BDCR register are set to their reset values.
mbed_official 354:e67efb2aab0e 83
mbed_official 354:e67efb2aab0e 84 @endverbatim
mbed_official 354:e67efb2aab0e 85 * @{
mbed_official 354:e67efb2aab0e 86 */
mbed_official 354:e67efb2aab0e 87
mbed_official 354:e67efb2aab0e 88 /**
mbed_official 354:e67efb2aab0e 89 * @brief Initializes the RCC extended peripherals clocks according to the specified parameters in the
mbed_official 354:e67efb2aab0e 90 * RCC_PeriphCLKInitTypeDef.
mbed_official 354:e67efb2aab0e 91 * @param PeriphClkInit: pointer to an RCC_PeriphCLKInitTypeDef structure that
mbed_official 354:e67efb2aab0e 92 * contains the configuration information for the Extended Peripherals clocks(RTC/LCD clock).
mbed_official 354:e67efb2aab0e 93 * @retval HAL status
mbed_official 354:e67efb2aab0e 94 */
mbed_official 354:e67efb2aab0e 95 HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit)
mbed_official 354:e67efb2aab0e 96 {
mbed_official 354:e67efb2aab0e 97 uint32_t tickstart = 0;
mbed_official 354:e67efb2aab0e 98 uint32_t tmpreg = 0;
mbed_official 354:e67efb2aab0e 99
mbed_official 354:e67efb2aab0e 100 /* Check the parameters */
mbed_official 354:e67efb2aab0e 101 assert_param(IS_RCC_PERIPHCLOCK(PeriphClkInit->PeriphClockSelection));
mbed_official 354:e67efb2aab0e 102
mbed_official 354:e67efb2aab0e 103 /*------------------------------- RTC/LCD Configuration ------------------------*/
mbed_official 354:e67efb2aab0e 104 if ((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == RCC_PERIPHCLK_RTC)
mbed_official 354:e67efb2aab0e 105 #if defined (STM32L100xB) || defined (STM32L100xBA) || defined (STM32L100xC) ||\
mbed_official 354:e67efb2aab0e 106 defined(STM32L152xB) || defined(STM32L152xBA) || defined(STM32L152xC) || \
mbed_official 354:e67efb2aab0e 107 defined(STM32L162xC) || defined(STM32L152xCA) || defined(STM32L152xD) || \
mbed_official 354:e67efb2aab0e 108 defined(STM32L162xCA) || defined(STM32L162xD) || defined(STM32L152xE) || \
mbed_official 354:e67efb2aab0e 109 defined(STM32L162xE)
mbed_official 354:e67efb2aab0e 110 || (((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_LCD) == RCC_PERIPHCLK_LCD)
mbed_official 354:e67efb2aab0e 111 #endif /* STM32L100xB || STM32L152xBA || ... || STM32L152xE || STM32L162xE */
mbed_official 354:e67efb2aab0e 112 )
mbed_official 354:e67efb2aab0e 113 {
mbed_official 354:e67efb2aab0e 114 /* Enable Power Controller clock */
mbed_official 354:e67efb2aab0e 115 __PWR_CLK_ENABLE();
mbed_official 354:e67efb2aab0e 116
mbed_official 354:e67efb2aab0e 117 /* Enable write access to Backup domain */
mbed_official 354:e67efb2aab0e 118 SET_BIT(PWR->CR, PWR_CR_DBP);
mbed_official 354:e67efb2aab0e 119
mbed_official 354:e67efb2aab0e 120 /* Wait for Backup domain Write protection disable */
mbed_official 354:e67efb2aab0e 121 tickstart = HAL_GetTick();
mbed_official 354:e67efb2aab0e 122
mbed_official 354:e67efb2aab0e 123 while((PWR->CR & PWR_CR_DBP) == RESET)
mbed_official 354:e67efb2aab0e 124 {
mbed_official 354:e67efb2aab0e 125 if((HAL_GetTick() - tickstart ) > DBP_TIMEOUT_VALUE)
mbed_official 354:e67efb2aab0e 126 {
mbed_official 354:e67efb2aab0e 127 return HAL_TIMEOUT;
mbed_official 354:e67efb2aab0e 128 }
mbed_official 354:e67efb2aab0e 129 }
mbed_official 354:e67efb2aab0e 130
mbed_official 354:e67efb2aab0e 131 tmpreg = (RCC->CSR & RCC_CSR_RTCSEL);
mbed_official 354:e67efb2aab0e 132 /* Reset the Backup domain only if the RTC Clock source selection is modified */
mbed_official 354:e67efb2aab0e 133 if((tmpreg != (PeriphClkInit->RTCClockSelection & RCC_CSR_RTCSEL))
mbed_official 354:e67efb2aab0e 134 #if defined (STM32L100xB) || defined (STM32L100xBA) || defined (STM32L100xC) ||\
mbed_official 354:e67efb2aab0e 135 defined(STM32L152xB) || defined(STM32L152xBA) || defined(STM32L152xC) || \
mbed_official 354:e67efb2aab0e 136 defined(STM32L162xC) || defined(STM32L152xCA) || defined(STM32L152xD) || \
mbed_official 354:e67efb2aab0e 137 defined(STM32L162xCA) || defined(STM32L162xD) || defined(STM32L152xE) || \
mbed_official 354:e67efb2aab0e 138 defined(STM32L162xE)
mbed_official 354:e67efb2aab0e 139 || (tmpreg != (PeriphClkInit->LCDClockSelection & RCC_CSR_RTCSEL))
mbed_official 354:e67efb2aab0e 140 #endif /* STM32L100xB || STM32L152xBA || ... || STM32L152xE || STM32L162xE */
mbed_official 354:e67efb2aab0e 141 )
mbed_official 354:e67efb2aab0e 142 {
mbed_official 354:e67efb2aab0e 143 /* Store the content of CSR register before the reset of Backup Domain */
mbed_official 354:e67efb2aab0e 144 tmpreg = (RCC->CSR & ~(RCC_CSR_RTCSEL));
mbed_official 354:e67efb2aab0e 145 /* RTC Clock selection can be changed only if the Backup Domain is reset */
mbed_official 354:e67efb2aab0e 146 __HAL_RCC_BACKUPRESET_FORCE();
mbed_official 354:e67efb2aab0e 147 __HAL_RCC_BACKUPRESET_RELEASE();
mbed_official 354:e67efb2aab0e 148 /* Restore the Content of CSR register */
mbed_official 354:e67efb2aab0e 149 RCC->CSR = tmpreg;
mbed_official 354:e67efb2aab0e 150 }
mbed_official 354:e67efb2aab0e 151
mbed_official 354:e67efb2aab0e 152 /* If LSE is selected as RTC clock source, wait for LSE reactivation */
mbed_official 354:e67efb2aab0e 153 if ((PeriphClkInit->RTCClockSelection == RCC_RTCCLKSOURCE_LSE)
mbed_official 354:e67efb2aab0e 154 #if defined (STM32L100xB) || defined (STM32L100xBA) || defined (STM32L100xC) ||\
mbed_official 354:e67efb2aab0e 155 defined(STM32L152xB) || defined(STM32L152xBA) || defined(STM32L152xC) || \
mbed_official 354:e67efb2aab0e 156 defined(STM32L162xC) || defined(STM32L152xCA) || defined(STM32L152xD) || \
mbed_official 354:e67efb2aab0e 157 defined(STM32L162xCA) || defined(STM32L162xD) || defined(STM32L152xE) || \
mbed_official 354:e67efb2aab0e 158 defined(STM32L162xE)
mbed_official 354:e67efb2aab0e 159 || (PeriphClkInit->LCDClockSelection == RCC_RTCCLKSOURCE_LSE)
mbed_official 354:e67efb2aab0e 160 #endif /* STM32L100xB || STM32L152xBA || ... || STM32L152xE || STM32L162xE */
mbed_official 354:e67efb2aab0e 161 )
mbed_official 354:e67efb2aab0e 162 {
mbed_official 354:e67efb2aab0e 163 /* Get timeout */
mbed_official 354:e67efb2aab0e 164 tickstart = HAL_GetTick();
mbed_official 354:e67efb2aab0e 165
mbed_official 354:e67efb2aab0e 166 /* Wait till LSE is ready */
mbed_official 354:e67efb2aab0e 167 while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET)
mbed_official 354:e67efb2aab0e 168 {
mbed_official 354:e67efb2aab0e 169 if((HAL_GetTick() - tickstart ) > LSE_TIMEOUT_VALUE)
mbed_official 354:e67efb2aab0e 170 {
mbed_official 354:e67efb2aab0e 171 return HAL_TIMEOUT;
mbed_official 354:e67efb2aab0e 172 }
mbed_official 354:e67efb2aab0e 173 }
mbed_official 354:e67efb2aab0e 174 }
mbed_official 354:e67efb2aab0e 175
mbed_official 354:e67efb2aab0e 176 __HAL_RCC_RTC_CONFIG(PeriphClkInit->RTCClockSelection);
mbed_official 354:e67efb2aab0e 177 }
mbed_official 354:e67efb2aab0e 178
mbed_official 354:e67efb2aab0e 179 return HAL_OK;
mbed_official 354:e67efb2aab0e 180 }
mbed_official 354:e67efb2aab0e 181
mbed_official 354:e67efb2aab0e 182 /**
mbed_official 354:e67efb2aab0e 183 * @brief Get the PeriphClkInit according to the internal
mbed_official 354:e67efb2aab0e 184 * RCC configuration registers.
mbed_official 354:e67efb2aab0e 185 * @param PeriphClkInit: pointer to an RCC_PeriphCLKInitTypeDef structure that
mbed_official 354:e67efb2aab0e 186 * returns the configuration information for the Extended Peripherals clocks(RTC/LCD clocks).
mbed_official 354:e67efb2aab0e 187 * @retval None
mbed_official 354:e67efb2aab0e 188 */
mbed_official 354:e67efb2aab0e 189 void HAL_RCCEx_GetPeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit)
mbed_official 354:e67efb2aab0e 190 {
mbed_official 354:e67efb2aab0e 191 uint32_t srcclk = 0;
mbed_official 354:e67efb2aab0e 192
mbed_official 354:e67efb2aab0e 193 /* Set all possible values for the extended clock type parameter------------*/
mbed_official 354:e67efb2aab0e 194 PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_RTC;
mbed_official 354:e67efb2aab0e 195 #if defined (STM32L100xB) || defined (STM32L100xBA) || defined (STM32L100xC) ||\
mbed_official 354:e67efb2aab0e 196 defined(STM32L152xB) || defined(STM32L152xBA) || defined(STM32L152xC) || \
mbed_official 354:e67efb2aab0e 197 defined(STM32L162xC) || defined(STM32L152xCA) || defined(STM32L152xD) || \
mbed_official 354:e67efb2aab0e 198 defined(STM32L162xCA) || defined(STM32L162xD) || defined(STM32L152xE) || \
mbed_official 354:e67efb2aab0e 199 defined(STM32L162xE)
mbed_official 354:e67efb2aab0e 200 PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_LCD;
mbed_official 354:e67efb2aab0e 201 #endif /* STM32L100xB || STM32L152xBA || ... || STM32L152xE || STM32L162xE */
mbed_official 354:e67efb2aab0e 202
mbed_official 354:e67efb2aab0e 203 /* Get the RTC/LCD configuration -----------------------------------------------*/
mbed_official 354:e67efb2aab0e 204 srcclk = __HAL_RCC_GET_RTC_SOURCE();
mbed_official 354:e67efb2aab0e 205 if (srcclk != RCC_RTCCLKSOURCE_HSE_DIV2)
mbed_official 354:e67efb2aab0e 206 {
mbed_official 354:e67efb2aab0e 207 /* Source clock is LSE or LSI*/
mbed_official 354:e67efb2aab0e 208 PeriphClkInit->RTCClockSelection = srcclk;
mbed_official 354:e67efb2aab0e 209 }
mbed_official 354:e67efb2aab0e 210 else
mbed_official 354:e67efb2aab0e 211 {
mbed_official 354:e67efb2aab0e 212 /* Source clock is HSE. Need to get the prescaler value*/
mbed_official 354:e67efb2aab0e 213 PeriphClkInit->RTCClockSelection = srcclk | (READ_BIT(RCC->CR, RCC_CR_RTCPRE));
mbed_official 354:e67efb2aab0e 214 }
mbed_official 354:e67efb2aab0e 215 #if defined (STM32L100xB) || defined (STM32L100xBA) || defined (STM32L100xC) ||\
mbed_official 354:e67efb2aab0e 216 defined(STM32L152xB) || defined(STM32L152xBA) || defined(STM32L152xC) || \
mbed_official 354:e67efb2aab0e 217 defined(STM32L162xC) || defined(STM32L152xCA) || defined(STM32L152xD) || \
mbed_official 354:e67efb2aab0e 218 defined(STM32L162xCA) || defined(STM32L162xD) || defined(STM32L152xE) || \
mbed_official 354:e67efb2aab0e 219 defined(STM32L162xE)
mbed_official 354:e67efb2aab0e 220 PeriphClkInit->LCDClockSelection = PeriphClkInit->RTCClockSelection;
mbed_official 354:e67efb2aab0e 221 #endif /* STM32L100xB || STM32L152xBA || ... || STM32L152xE || STM32L162xE */
mbed_official 354:e67efb2aab0e 222 }
mbed_official 354:e67efb2aab0e 223
mbed_official 354:e67efb2aab0e 224 #if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || \
mbed_official 354:e67efb2aab0e 225 defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || \
mbed_official 354:e67efb2aab0e 226 defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || \
mbed_official 354:e67efb2aab0e 227 defined(STM32L151xE) || defined (STM32L152xE) || defined (STM32L162xE)
mbed_official 354:e67efb2aab0e 228
mbed_official 354:e67efb2aab0e 229 /**
mbed_official 354:e67efb2aab0e 230 * @brief Enables the LSE Clock Security System.
mbed_official 354:e67efb2aab0e 231 * @note If a failure is detected on the external 32 kHz oscillator, the LSE clock is no longer supplied
mbed_official 354:e67efb2aab0e 232 * to the RTC but no hardware action is made to the registers.
mbed_official 354:e67efb2aab0e 233 * In Standby mode a wakeup is generated. In other modes an interrupt can be sent to wakeup
mbed_official 354:e67efb2aab0e 234 * the software (see Section 5.3.4: Clock interrupt register (RCC_CIR) on page 104).
mbed_official 354:e67efb2aab0e 235 * The software MUST then disable the LSECSSON bit, stop the defective 32 kHz oscillator
mbed_official 354:e67efb2aab0e 236 * (disabling LSEON), and can change the RTC clock source (no clock or LSI or HSE, with
mbed_official 354:e67efb2aab0e 237 * RTCSEL), or take any required action to secure the application.
mbed_official 354:e67efb2aab0e 238 * @note LSE CSS available only for high density and medium+ devices
mbed_official 354:e67efb2aab0e 239 * @retval None
mbed_official 354:e67efb2aab0e 240 */
mbed_official 354:e67efb2aab0e 241 void HAL_RCCEx_EnableLSECSS(void)
mbed_official 354:e67efb2aab0e 242 {
mbed_official 354:e67efb2aab0e 243 *(__IO uint32_t *) CSR_LSECSSON_BB = (uint32_t)ENABLE;
mbed_official 354:e67efb2aab0e 244 }
mbed_official 354:e67efb2aab0e 245
mbed_official 354:e67efb2aab0e 246 /**
mbed_official 354:e67efb2aab0e 247 * @brief Disables the LSE Clock Security System.
mbed_official 354:e67efb2aab0e 248 * @note Once enabled this bit cannot be disabled, except after an LSE failure detection
mbed_official 354:e67efb2aab0e 249 * (LSECSSD=1). In that case the software MUST disable the LSECSSON bit.
mbed_official 354:e67efb2aab0e 250 * Reset by power on reset and RTC software reset (RTCRST bit).
mbed_official 354:e67efb2aab0e 251 * @note LSE CSS available only for high density and medium+ devices
mbed_official 354:e67efb2aab0e 252 * @retval None
mbed_official 354:e67efb2aab0e 253 */
mbed_official 354:e67efb2aab0e 254 void HAL_RCCEx_DisableLSECSS(void)
mbed_official 354:e67efb2aab0e 255 {
mbed_official 354:e67efb2aab0e 256 *(__IO uint32_t *) CSR_LSECSSON_BB = (uint32_t)DISABLE;
mbed_official 354:e67efb2aab0e 257 }
mbed_official 354:e67efb2aab0e 258 #endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L152xE || STM32L162xE */
mbed_official 354:e67efb2aab0e 259
mbed_official 354:e67efb2aab0e 260 /**
mbed_official 354:e67efb2aab0e 261 * @}
mbed_official 354:e67efb2aab0e 262 */
mbed_official 354:e67efb2aab0e 263
mbed_official 354:e67efb2aab0e 264 /**
mbed_official 354:e67efb2aab0e 265 * @}
mbed_official 354:e67efb2aab0e 266 */
mbed_official 354:e67efb2aab0e 267
mbed_official 354:e67efb2aab0e 268 #endif /* HAL_RCC_MODULE_ENABLED */
mbed_official 354:e67efb2aab0e 269 /**
mbed_official 354:e67efb2aab0e 270 * @}
mbed_official 354:e67efb2aab0e 271 */
mbed_official 354:e67efb2aab0e 272
mbed_official 354:e67efb2aab0e 273 /**
mbed_official 354:e67efb2aab0e 274 * @}
mbed_official 354:e67efb2aab0e 275 */
mbed_official 354:e67efb2aab0e 276
mbed_official 354:e67efb2aab0e 277 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/