From 8128941e6c23c1786bad8c0a61c099b825818ac1 Mon Sep 17 00:00:00 2001 From: Damien Date: Sat, 26 Oct 2013 02:06:37 +0100 Subject: Add support for RTC, used as a calendar. --- stm/lib/stm32f4xx_pwr.c | 679 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 679 insertions(+) create mode 100644 stm/lib/stm32f4xx_pwr.c (limited to 'stm/lib/stm32f4xx_pwr.c') diff --git a/stm/lib/stm32f4xx_pwr.c b/stm/lib/stm32f4xx_pwr.c new file mode 100644 index 0000000000..322ecfb8e6 --- /dev/null +++ b/stm/lib/stm32f4xx_pwr.c @@ -0,0 +1,679 @@ +/** + ****************************************************************************** + * @file stm32f4xx_pwr.c + * @author MCD Application Team + * @version V1.1.0 + * @date 11-January-2013 + * @brief This file provides firmware functions to manage the following + * functionalities of the Power Controller (PWR) peripheral: + * + Backup Domain Access + * + PVD configuration + * + WakeUp pin configuration + * + Main and Backup Regulators configuration + * + FLASH Power Down configuration + * + Low Power modes configuration + * + Flags management + * + ****************************************************************************** + * @attention + * + *

© COPYRIGHT 2013 STMicroelectronics

+ * + * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); + * You may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.st.com/software_license_agreement_liberty_v2 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_conf.h" +#include "stm32f4xx_pwr.h" +#include "stm32f4xx_rcc.h" + +/** @addtogroup STM32F4xx_StdPeriph_Driver + * @{ + */ + +/** @defgroup PWR + * @brief PWR driver modules + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* --------- PWR registers bit address in the alias region ---------- */ +#define PWR_OFFSET (PWR_BASE - PERIPH_BASE) + +/* --- CR Register ---*/ + +/* Alias word address of DBP bit */ +#define CR_OFFSET (PWR_OFFSET + 0x00) +#define DBP_BitNumber 0x08 +#define CR_DBP_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (DBP_BitNumber * 4)) + +/* Alias word address of PVDE bit */ +#define PVDE_BitNumber 0x04 +#define CR_PVDE_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PVDE_BitNumber * 4)) + +/* Alias word address of FPDS bit */ +#define FPDS_BitNumber 0x09 +#define CR_FPDS_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (FPDS_BitNumber * 4)) + +/* Alias word address of PMODE bit */ +#define PMODE_BitNumber 0x0E +#define CR_PMODE_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PMODE_BitNumber * 4)) + + +/* --- CSR Register ---*/ + +/* Alias word address of EWUP bit */ +#define CSR_OFFSET (PWR_OFFSET + 0x04) +#define EWUP_BitNumber 0x08 +#define CSR_EWUP_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (EWUP_BitNumber * 4)) + +/* Alias word address of BRE bit */ +#define BRE_BitNumber 0x09 +#define CSR_BRE_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (BRE_BitNumber * 4)) + +/* ------------------ PWR registers bit mask ------------------------ */ + +/* CR register bit mask */ +#define CR_DS_MASK ((uint32_t)0xFFFFFFFC) +#define CR_PLS_MASK ((uint32_t)0xFFFFFF1F) +#define CR_VOS_MASK ((uint32_t)0xFFFF3FFF) + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup PWR_Private_Functions + * @{ + */ + +/** @defgroup PWR_Group1 Backup Domain Access function + * @brief Backup Domain Access function + * +@verbatim + =============================================================================== + ##### Backup Domain Access function ##### + =============================================================================== + [..] + After reset, the backup domain (RTC registers, RTC backup data + registers and backup SRAM) is protected against possible unwanted + write accesses. + To enable access to the RTC Domain and RTC registers, proceed as follows: + (+) Enable the Power Controller (PWR) APB1 interface clock using the + RCC_APB1PeriphClockCmd() function. + (+) Enable access to RTC domain using the PWR_BackupAccessCmd() function. + +@endverbatim + * @{ + */ + +/** + * @brief Deinitializes the PWR peripheral registers to their default reset values. + * @param None + * @retval None + */ +void PWR_DeInit(void) +{ + RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, ENABLE); + RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, DISABLE); +} + +/** + * @brief Enables or disables access to the backup domain (RTC registers, RTC + * backup data registers and backup SRAM). + * @note If the HSE divided by 2, 3, ..31 is used as the RTC clock, the + * Backup Domain Access should be kept enabled. + * @param NewState: new state of the access to the backup domain. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void PWR_BackupAccessCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + *(__IO uint32_t *) CR_DBP_BB = (uint32_t)NewState; +} + +/** + * @} + */ + +/** @defgroup PWR_Group2 PVD configuration functions + * @brief PVD configuration functions + * +@verbatim + =============================================================================== + ##### PVD configuration functions ##### + =============================================================================== + [..] + (+) The PVD is used to monitor the VDD power supply by comparing it to a + threshold selected by the PVD Level (PLS[2:0] bits in the PWR_CR). + (+) A PVDO flag is available to indicate if VDD/VDDA is higher or lower + than the PVD threshold. This event is internally connected to the EXTI + line16 and can generate an interrupt if enabled through the EXTI registers. + (+) The PVD is stopped in Standby mode. + +@endverbatim + * @{ + */ + +/** + * @brief Configures the voltage threshold detected by the Power Voltage Detector(PVD). + * @param PWR_PVDLevel: specifies the PVD detection level + * This parameter can be one of the following values: + * @arg PWR_PVDLevel_0 + * @arg PWR_PVDLevel_1 + * @arg PWR_PVDLevel_2 + * @arg PWR_PVDLevel_3 + * @arg PWR_PVDLevel_4 + * @arg PWR_PVDLevel_5 + * @arg PWR_PVDLevel_6 + * @arg PWR_PVDLevel_7 + * @note Refer to the electrical characteristics of your device datasheet for + * more details about the voltage threshold corresponding to each + * detection level. + * @retval None + */ +void PWR_PVDLevelConfig(uint32_t PWR_PVDLevel) +{ + uint32_t tmpreg = 0; + + /* Check the parameters */ + assert_param(IS_PWR_PVD_LEVEL(PWR_PVDLevel)); + + tmpreg = PWR->CR; + + /* Clear PLS[7:5] bits */ + tmpreg &= CR_PLS_MASK; + + /* Set PLS[7:5] bits according to PWR_PVDLevel value */ + tmpreg |= PWR_PVDLevel; + + /* Store the new value */ + PWR->CR = tmpreg; +} + +/** + * @brief Enables or disables the Power Voltage Detector(PVD). + * @param NewState: new state of the PVD. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void PWR_PVDCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + *(__IO uint32_t *) CR_PVDE_BB = (uint32_t)NewState; +} + +/** + * @} + */ + +/** @defgroup PWR_Group3 WakeUp pin configuration functions + * @brief WakeUp pin configuration functions + * +@verbatim + =============================================================================== + ##### WakeUp pin configuration functions ##### + =============================================================================== + [..] + (+) WakeUp pin is used to wakeup the system from Standby mode. This pin is + forced in input pull down configuration and is active on rising edges. + (+) There is only one WakeUp pin: WakeUp Pin 1 on PA.00. + +@endverbatim + * @{ + */ + +/** + * @brief Enables or disables the WakeUp Pin functionality. + * @param NewState: new state of the WakeUp Pin functionality. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void PWR_WakeUpPinCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + *(__IO uint32_t *) CSR_EWUP_BB = (uint32_t)NewState; +} + +/** + * @} + */ + +/** @defgroup PWR_Group4 Main and Backup Regulators configuration functions + * @brief Main and Backup Regulators configuration functions + * +@verbatim + =============================================================================== + ##### Main and Backup Regulators configuration functions ##### + =============================================================================== + [..] + (+) The backup domain includes 4 Kbytes of backup SRAM accessible only from + the CPU, and address in 32-bit, 16-bit or 8-bit mode. Its content is + retained even in Standby or VBAT mode when the low power backup regulator + is enabled. It can be considered as an internal EEPROM when VBAT is + always present. You can use the PWR_BackupRegulatorCmd() function to + enable the low power backup regulator and use the PWR_GetFlagStatus + (PWR_FLAG_BRR) to check if it is ready or not. + + (+) When the backup domain is supplied by VDD (analog switch connected to VDD) + the backup SRAM is powered from VDD which replaces the VBAT power supply to + save battery life. + + (+) The backup SRAM is not mass erased by an tamper event. It is read + protected to prevent confidential data, such as cryptographic private + key, from being accessed. The backup SRAM can be erased only through + the Flash interface when a protection level change from level 1 to + level 0 is requested. + -@- Refer to the description of Read protection (RDP) in the Flash + programming manual. + + (+) The main internal regulator can be configured to have a tradeoff between + performance and power consumption when the device does not operate at + the maximum frequency. This is done through PWR_MainRegulatorModeConfig() + function which configure VOS bit in PWR_CR register: + (++) When this bit is set (Regulator voltage output Scale 1 mode selected) + the System frequency can go up to 168 MHz. + (++) When this bit is reset (Regulator voltage output Scale 2 mode selected) + the System frequency can go up to 144 MHz. + + Refer to the datasheets for more details. + +@endverbatim + * @{ + */ + +/** + * @brief Enables or disables the Backup Regulator. + * @param NewState: new state of the Backup Regulator. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void PWR_BackupRegulatorCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + *(__IO uint32_t *) CSR_BRE_BB = (uint32_t)NewState; +} + +/** + * @brief Configures the main internal regulator output voltage. + * @param PWR_Regulator_Voltage: specifies the regulator output voltage to achieve + * a tradeoff between performance and power consumption when the device does + * not operate at the maximum frequency (refer to the datasheets for more details). + * This parameter can be one of the following values: + * @arg PWR_Regulator_Voltage_Scale1: Regulator voltage output Scale 1 mode, + * System frequency up to 168 MHz. + * @arg PWR_Regulator_Voltage_Scale2: Regulator voltage output Scale 2 mode, + * System frequency up to 144 MHz. + * @arg PWR_Regulator_Voltage_Scale3: Regulator voltage output Scale 3 mode, + * System frequency up to 120 MHz + * @retval None + */ +void PWR_MainRegulatorModeConfig(uint32_t PWR_Regulator_Voltage) +{ + uint32_t tmpreg = 0; + + /* Check the parameters */ + assert_param(IS_PWR_REGULATOR_VOLTAGE(PWR_Regulator_Voltage)); + + tmpreg = PWR->CR; + + /* Clear VOS[15:14] bits */ + tmpreg &= CR_VOS_MASK; + + /* Set VOS[15:14] bits according to PWR_Regulator_Voltage value */ + tmpreg |= PWR_Regulator_Voltage; + + /* Store the new value */ + PWR->CR = tmpreg; +} + +/** + * @} + */ + +/** @defgroup PWR_Group5 FLASH Power Down configuration functions + * @brief FLASH Power Down configuration functions + * +@verbatim + =============================================================================== + ##### FLASH Power Down configuration functions ##### + =============================================================================== + [..] + (+) By setting the FPDS bit in the PWR_CR register by using the + PWR_FlashPowerDownCmd() function, the Flash memory also enters power + down mode when the device enters Stop mode. When the Flash memory + is in power down mode, an additional startup delay is incurred when + waking up from Stop mode. +@endverbatim + * @{ + */ + +/** + * @brief Enables or disables the Flash Power Down in STOP mode. + * @param NewState: new state of the Flash power mode. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void PWR_FlashPowerDownCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + *(__IO uint32_t *) CR_FPDS_BB = (uint32_t)NewState; +} + +/** + * @} + */ + +/** @defgroup PWR_Group6 Low Power modes configuration functions + * @brief Low Power modes configuration functions + * +@verbatim + =============================================================================== + ##### Low Power modes configuration functions ##### + =============================================================================== + [..] + The devices feature 3 low-power modes: + (+) Sleep mode: Cortex-M4 core stopped, peripherals kept running. + (+) Stop mode: all clocks are stopped, regulator running, regulator + in low power mode + (+) Standby mode: 1.2V domain powered off. + + *** Sleep mode *** + ================== + [..] + (+) Entry: + (++) The Sleep mode is entered by using the __WFI() or __WFE() functions. + (+) Exit: + (++) Any peripheral interrupt acknowledged by the nested vectored interrupt + controller (NVIC) can wake up the device from Sleep mode. + + *** Stop mode *** + ================= + [..] + In Stop mode, all clocks in the 1.2V domain are stopped, the PLL, the HSI, + and the HSE RC oscillators are disabled. Internal SRAM and register contents + are preserved. + The voltage regulator can be configured either in normal or low-power mode. + To minimize the consumption In Stop mode, FLASH can be powered off before + entering the Stop mode. It can be switched on again by software after exiting + the Stop mode using the PWR_FlashPowerDownCmd() function. + + (+) Entry: + (++) The Stop mode is entered using the PWR_EnterSTOPMode(PWR_Regulator_LowPower,) + function with regulator in LowPower or with Regulator ON. + (+) Exit: + (++) Any EXTI Line (Internal or External) configured in Interrupt/Event mode. + + *** Standby mode *** + ==================== + [..] + The Standby mode allows to achieve the lowest power consumption. It is based + on the Cortex-M4 deepsleep mode, with the voltage regulator disabled. + The 1.2V domain is consequently powered off. The PLL, the HSI oscillator and + the HSE oscillator are also switched off. SRAM and register contents are lost + except for the RTC registers, RTC backup registers, backup SRAM and Standby + circuitry. + + The voltage regulator is OFF. + + (+) Entry: + (++) The Standby mode is entered using the PWR_EnterSTANDBYMode() function. + (+) Exit: + (++) WKUP pin rising edge, RTC alarm (Alarm A and Alarm B), RTC wakeup, + tamper event, time-stamp event, external reset in NRST pin, IWDG reset. + + *** Auto-wakeup (AWU) from low-power mode *** + ============================================= + [..] + The MCU can be woken up from low-power mode by an RTC Alarm event, an RTC + Wakeup event, a tamper event, a time-stamp event, or a comparator event, + without depending on an external interrupt (Auto-wakeup mode). + + (#) RTC auto-wakeup (AWU) from the Stop mode + + (++) To wake up from the Stop mode with an RTC alarm event, it is necessary to: + (+++) Configure the EXTI Line 17 to be sensitive to rising edges (Interrupt + or Event modes) using the EXTI_Init() function. + (+++) Enable the RTC Alarm Interrupt using the RTC_ITConfig() function + (+++) Configure the RTC to generate the RTC alarm using the RTC_SetAlarm() + and RTC_AlarmCmd() functions. + (++) To wake up from the Stop mode with an RTC Tamper or time stamp event, it + is necessary to: + (+++) Configure the EXTI Line 21 to be sensitive to rising edges (Interrupt + or Event modes) using the EXTI_Init() function. + (+++) Enable the RTC Tamper or time stamp Interrupt using the RTC_ITConfig() + function + (+++) Configure the RTC to detect the tamper or time stamp event using the + RTC_TimeStampConfig(), RTC_TamperTriggerConfig() and RTC_TamperCmd() + functions. + (++) To wake up from the Stop mode with an RTC WakeUp event, it is necessary to: + (+++) Configure the EXTI Line 22 to be sensitive to rising edges (Interrupt + or Event modes) using the EXTI_Init() function. + (+++) Enable the RTC WakeUp Interrupt using the RTC_ITConfig() function + (+++) Configure the RTC to generate the RTC WakeUp event using the RTC_WakeUpClockConfig(), + RTC_SetWakeUpCounter() and RTC_WakeUpCmd() functions. + + (#) RTC auto-wakeup (AWU) from the Standby mode + + (++) To wake up from the Standby mode with an RTC alarm event, it is necessary to: + (+++) Enable the RTC Alarm Interrupt using the RTC_ITConfig() function + (+++) Configure the RTC to generate the RTC alarm using the RTC_SetAlarm() + and RTC_AlarmCmd() functions. + (++) To wake up from the Standby mode with an RTC Tamper or time stamp event, it + is necessary to: + (+++) Enable the RTC Tamper or time stamp Interrupt using the RTC_ITConfig() + function + (+++) Configure the RTC to detect the tamper or time stamp event using the + RTC_TimeStampConfig(), RTC_TamperTriggerConfig() and RTC_TamperCmd() + functions. + (++) To wake up from the Standby mode with an RTC WakeUp event, it is necessary to: + (+++) Enable the RTC WakeUp Interrupt using the RTC_ITConfig() function + (+++) Configure the RTC to generate the RTC WakeUp event using the RTC_WakeUpClockConfig(), + RTC_SetWakeUpCounter() and RTC_WakeUpCmd() functions. + +@endverbatim + * @{ + */ + +/** + * @brief Enters STOP mode. + * + * @note In Stop mode, all I/O pins keep the same state as in Run mode. + * @note When exiting Stop mode by issuing an interrupt or a wakeup event, + * the HSI RC oscillator is selected as system clock. + * @note When the voltage regulator operates in low power mode, an additional + * startup delay is incurred when waking up from Stop mode. + * By keeping the internal regulator ON during Stop mode, the consumption + * is higher although the startup time is reduced. + * + * @param PWR_Regulator: specifies the regulator state in STOP mode. + * This parameter can be one of the following values: + * @arg PWR_Regulator_ON: STOP mode with regulator ON + * @arg PWR_Regulator_LowPower: STOP mode with regulator in low power mode + * @param PWR_STOPEntry: specifies if STOP mode in entered with WFI or WFE instruction. + * This parameter can be one of the following values: + * @arg PWR_STOPEntry_WFI: enter STOP mode with WFI instruction + * @arg PWR_STOPEntry_WFE: enter STOP mode with WFE instruction + * @retval None + */ +void PWR_EnterSTOPMode(uint32_t PWR_Regulator, uint8_t PWR_STOPEntry) +{ + uint32_t tmpreg = 0; + + /* Check the parameters */ + assert_param(IS_PWR_REGULATOR(PWR_Regulator)); + assert_param(IS_PWR_STOP_ENTRY(PWR_STOPEntry)); + + /* Select the regulator state in STOP mode ---------------------------------*/ + tmpreg = PWR->CR; + /* Clear PDDS and LPDSR bits */ + tmpreg &= CR_DS_MASK; + + /* Set LPDSR bit according to PWR_Regulator value */ + tmpreg |= PWR_Regulator; + + /* Store the new value */ + PWR->CR = tmpreg; + + /* Set SLEEPDEEP bit of Cortex System Control Register */ + SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; + + /* Select STOP mode entry --------------------------------------------------*/ + if(PWR_STOPEntry == PWR_STOPEntry_WFI) + { + /* Request Wait For Interrupt */ + __WFI(); + } + else + { + /* Request Wait For Event */ + __WFE(); + } + /* Reset SLEEPDEEP bit of Cortex System Control Register */ + SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP_Msk); +} + +/** + * @brief Enters STANDBY mode. + * @note In Standby mode, all I/O pins are high impedance except for: + * - Reset pad (still available) + * - RTC_AF1 pin (PC13) if configured for tamper, time-stamp, RTC + * Alarm out, or RTC clock calibration out. + * - RTC_AF2 pin (PI8) if configured for tamper or time-stamp. + * - WKUP pin 1 (PA0) if enabled. + * @param None + * @retval None + */ +void PWR_EnterSTANDBYMode(void) +{ + /* Clear Wakeup flag */ + PWR->CR |= PWR_CR_CWUF; + + /* Select STANDBY mode */ + PWR->CR |= PWR_CR_PDDS; + + /* Set SLEEPDEEP bit of Cortex System Control Register */ + SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; + +/* This option is used to ensure that store operations are completed */ +#if defined ( __CC_ARM ) + __force_stores(); +#endif + /* Request Wait For Interrupt */ + __WFI(); +} + +/** + * @} + */ + +/** @defgroup PWR_Group7 Flags management functions + * @brief Flags management functions + * +@verbatim + =============================================================================== + ##### Flags management functions ##### + =============================================================================== + +@endverbatim + * @{ + */ + +/** + * @brief Checks whether the specified PWR flag is set or not. + * @param PWR_FLAG: specifies the flag to check. + * This parameter can be one of the following values: + * @arg PWR_FLAG_WU: Wake Up flag. This flag indicates that a wakeup event + * was received from the WKUP pin or from the RTC alarm (Alarm A + * or Alarm B), RTC Tamper event, RTC TimeStamp event or RTC Wakeup. + * An additional wakeup event is detected if the WKUP pin is enabled + * (by setting the EWUP bit) when the WKUP pin level is already high. + * @arg PWR_FLAG_SB: StandBy flag. This flag indicates that the system was + * resumed from StandBy mode. + * @arg PWR_FLAG_PVDO: PVD Output. This flag is valid only if PVD is enabled + * by the PWR_PVDCmd() function. The PVD is stopped by Standby mode + * For this reason, this bit is equal to 0 after Standby or reset + * until the PVDE bit is set. + * @arg PWR_FLAG_BRR: Backup regulator ready flag. This bit is not reset + * when the device wakes up from Standby mode or by a system reset + * or power reset. + * @arg PWR_FLAG_VOSRDY: This flag indicates that the Regulator voltage + * scaling output selection is ready. + * @retval The new state of PWR_FLAG (SET or RESET). + */ +FlagStatus PWR_GetFlagStatus(uint32_t PWR_FLAG) +{ + FlagStatus bitstatus = RESET; + + /* Check the parameters */ + assert_param(IS_PWR_GET_FLAG(PWR_FLAG)); + + if ((PWR->CSR & PWR_FLAG) != (uint32_t)RESET) + { + bitstatus = SET; + } + else + { + bitstatus = RESET; + } + /* Return the flag status */ + return bitstatus; +} + +/** + * @brief Clears the PWR's pending flags. + * @param PWR_FLAG: specifies the flag to clear. + * This parameter can be one of the following values: + * @arg PWR_FLAG_WU: Wake Up flag + * @arg PWR_FLAG_SB: StandBy flag + * @retval None + */ +void PWR_ClearFlag(uint32_t PWR_FLAG) +{ + /* Check the parameters */ + assert_param(IS_PWR_CLEAR_FLAG(PWR_FLAG)); + + PWR->CR |= PWR_FLAG << 2; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3