Revision 0:1ecaa40f74d0, committed 2016-05-07

Comitter:

MichaelW

Date:

Sat May 07 11:51:56 2016 +0000

Child:

1:085a87258f10

Commit message:

Working Code

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WakeUp.lib	Sat May 07 11:51:56 2016 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/users/Sissors/code/WakeUp/#49ca85e8822f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat May 07 11:51:56 2016 +0000
@@ -0,0 +1,143 @@
+// Depending on the LED connections either the LED is off the 2 seconds
+// the target spends in deepsleep(), and on for the other second. Or it is inverted
+
+
+#include "mbed.h"
+#include "WakeUp.h"
+#include "stm32f0xx_hal.h"
+#include "stm32f0xx_hal_rtc_ex.h"
+#include "rtc_wakeup.h"
+
+#define RTC_CR_WUTE   (1<<10)
+#define RTC_CR_WUTIE    (1<<14)
+#define EXTI_IMR_MR20 0x00100000
+
+
+DigitalOut myled(LED1);
+DigitalOut Buzz(A2);
+DigitalOut RST(D0);
+
+static RTC_HandleTypeDef RtcHandle;
+
+void ClearWakeUp(void);
+
+int main()
+{
+    ClearWakeUp();
+    RST = 1;
+    Buzz = 0;
+    myled = 1;
+    wait(0.2);
+    myled = 0;
+    wait(0.2);
+    //print("Wake %i\r\n", TM_LOWPOWER_StandbyReset() );
+    //The low-power oscillator can be quite inaccurate on some targets
+    //this function calibrates it against the main clock
+    WakeUp::calibrate();
+
+
+
+    //RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, DISABLE);   //Need write access to DBP bit
+
+    //__HAL_RCC_PWR_CLK_ENABLE();
+    //PWR->CR |= PWR_CR_DBP;
+    //SET_BIT(PWR->CR, PWR_CR_DBP);
+    /* //Wait for Backup domain Write protection disable
+    uint32_t tickstart = HAL_GetTick();
+
+
+    while((PWR->CR & PWR_CR_DBP) == RESET)
+      {
+        if((HAL_GetTick() - tickstart) > RCC_DBP_TIMEOUT_VALUE)
+        {
+          return HAL_TIMEOUT;
+        }
+      }
+    */
+    /*
+      HAL_PWR_EnableBkUpAccess();
+
+      RtcHandle.Instance = RTC;
+      __HAL_RTC_WRITEPROTECTION_DISABLE(&RtcHandle);
+
+       __HAL_RTC_ALARM_EXTI_CLEAR_FLAG();
+       __HAL_RTC_ALARM_CLEAR_FLAG(&RtcHandle, RTC_FLAG_ALRAF);
+       __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RtcHandle, RTC_FLAG_WUTF);
+      //__HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG() ;
+
+    // __HAL_RCC_BACKUPRESET_FORCE();
+    //__HAL_RCC_BACKUPRESET_FORCE();
+
+       __HAL_RTC_WRITEPROTECTION_ENABLE(&RtcHandle);
+
+    */
+
+    ///Direct register access version  ***************************************************
+
+    // ClearWakeUp();
+
+    //RCC_APB1PeriphCmd(RCC_APB1Periph_PWR, ENABLE);
+
+    // __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
+    //From Below works  ***************************************************
+
+    WakeUp::set_ms(2000);
+
+    //Enter deepsleep, the program won't go beyond this point until it is woken up
+    //deepsleep();
+
+    printf("Standby Mode\r\n");
+
+    ClearWakeUp();
+
+    HAL_PWR_EnterSTANDBYMode();
+
+    //This will never be executed
+    printf("After sleep\r\n");
+}
+void ClearWakeUp(void){
+    PWR->CR |= PWR_CR_DBP;      //Enable power domain
+    RTC->WPR = 0xCA;            //Disable RTC write protection
+    RTC->WPR = 0x53;
+
+    __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
+    __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
+
+    RTC->WPR = 0xFF;        //Enable RTC write protection
+    PWR->CR &= ~PWR_CR_DBP; //Disable power domain
+}
+
+void ClearWakeUp2(void)
+{
+    ///Direct register access version  ***************************************************
+    RtcHandle.Instance = RTC;
+
+    __HAL_RTC_WAKEUPTIMER_DISABLE(&RtcHandle);
+    __HAL_RTC_WAKEUPTIMER_DISABLE_IT(&RtcHandle,RTC_IT_WUT);
+
+    PWR->CR |= PWR_CR_DBP;      //Enable power domain                           //*******************
+    RTC->WPR = 0xCA;            //Disable RTC write protection
+    RTC->WPR = 0x53;
+
+    __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_IT() ;
+    __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_EVENT() ;
+
+    /* Disable the Alarm A interrupt */
+    __HAL_RTC_ALARMA_DISABLE(&RtcHandle);
+
+    /* Clear flag alarm A */
+    __HAL_RTC_ALARM_CLEAR_FLAG(&RtcHandle, RTC_FLAG_ALRAF);
+
+    __HAL_RTC_ALARM_EXTI_CLEAR_FLAG();
+    __HAL_RTC_ALARM_CLEAR_FLAG(&RtcHandle, RTC_FLAG_ALRAF);
+    __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RtcHandle, RTC_FLAG_WUTF);
+
+    // #define __HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG()            (EXTI->PR = RTC_EXTI_LINE_WAKEUPTIMER_EVENT)
+    __HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG() ;
+
+    EXTI->PR = RTC_EXTI_LINE_WAKEUPTIMER_EVENT ;
+    EXTI->PR = 0x007FFFFF;
+    RTC->WPR = 0xFF;        //Enable RTC write protection
+    PWR->CR &= ~PWR_CR_DBP; //Disable power domain
+
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sat May 07 11:51:56 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/4336505e4b1c
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rtc_wakeup.h	Sat May 07 11:51:56 2016 +0000
@@ -0,0 +1,305 @@
+/**
+  * @brief  Enable the RTC WakeUp Timer peripheral.
+  * @param  __HANDLE__: specifies the RTC handle.
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_ENABLE(__HANDLE__)                      ((__HANDLE__)->Instance->CR |= (RTC_CR_WUTE))
+ 
+/**
+  * @brief  Disable the RTC WakeUp Timer peripheral.
+  * @param  __HANDLE__: specifies the RTC handle.
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_DISABLE(__HANDLE__)                     ((__HANDLE__)->Instance->CR &= ~(RTC_CR_WUTE))
+ 
+/**
+  * @brief  Enable the RTC WakeUpTimer interrupt.
+  * @param  __HANDLE__: specifies the RTC handle.
+  * @param  __INTERRUPT__: specifies the RTC WakeUpTimer interrupt sources to be enabled.
+  *         This parameter can be:
+  *            @arg RTC_IT_WUT: WakeUpTimer interrupt
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_ENABLE_IT(__HANDLE__, __INTERRUPT__)    ((__HANDLE__)->Instance->CR |= (__INTERRUPT__))
+ 
+/**
+  * @brief  Disable the RTC WakeUpTimer interrupt.
+  * @param  __HANDLE__: specifies the RTC handle.
+  * @param  __INTERRUPT__: specifies the RTC WakeUpTimer interrupt sources to be disabled.
+  *         This parameter can be:
+  *            @arg RTC_IT_WUT: WakeUpTimer interrupt
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_DISABLE_IT(__HANDLE__, __INTERRUPT__)   ((__HANDLE__)->Instance->CR &= ~(__INTERRUPT__))
+ 
+/**
+  * @brief  Check whether the specified RTC WakeUpTimer interrupt has occurred or not.
+  * @param  __HANDLE__: specifies the RTC handle.
+  * @param  __INTERRUPT__: specifies the RTC WakeUpTimer interrupt to check.
+  *         This parameter can be:
+  *            @arg RTC_IT_WUT:  WakeUpTimer interrupt
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_GET_IT(__HANDLE__, __INTERRUPT__)       (((((__HANDLE__)->Instance->ISR) & ((__INTERRUPT__)>> 4)) != RESET) ? SET : RESET)
+ 
+/**
+  * @brief  Check whether the specified RTC Wake Up timer interrupt has been enabled or not.
+  * @param  __HANDLE__: specifies the RTC handle.
+  * @param  __INTERRUPT__: specifies the RTC Wake Up timer interrupt sources to check.
+  *         This parameter can be:
+  *            @arg RTC_IT_WUT:  WakeUpTimer interrupt
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__)   (((((__HANDLE__)->Instance->CR) & (__INTERRUPT__)) != RESET) ? SET : RESET)
+ 
+/**
+  * @brief  Get the selected RTC WakeUpTimer's flag status.
+  * @param  __HANDLE__: specifies the RTC handle.
+  * @param  __FLAG__: specifies the RTC WakeUpTimer Flag is pending or not.
+  *          This parameter can be:
+  *             @arg RTC_FLAG_WUTF
+  *             @arg RTC_FLAG_WUTWF
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_GET_FLAG(__HANDLE__, __FLAG__)   (((((__HANDLE__)->Instance->ISR) & (__FLAG__)) != RESET) ? SET : RESET)
+ 
+/**
+  * @brief  Clear the RTC Wake Up timer's pending flags.
+  * @param  __HANDLE__: specifies the RTC handle.
+  * @param  __FLAG__: specifies the RTC WakeUpTimer Flag to clear.
+  *         This parameter can be:
+  *            @arg RTC_FLAG_WUTF
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->Instance->ISR) = (~(((__FLAG__) | RTC_ISR_INIT)& 0x0000FFFF)|((__HANDLE__)->Instance->ISR & RTC_ISR_INIT)) 
+ 
+/* WAKE-UP TIMER EXTI */
+/* ------------------ */
+/**
+  * @brief  Enable interrupt on the RTC WakeUp Timer associated Exti line.
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_IT()       (EXTI->IMR |= RTC_EXTI_LINE_WAKEUPTIMER_EVENT)
+ 
+/**
+  * @brief  Disable interrupt on the RTC WakeUp Timer associated Exti line.
+  * @retval None
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_IT()      (EXTI->IMR &= ~(RTC_EXTI_LINE_WAKEUPTIMER_EVENT))
+ 
+/**
+  * @brief  Enable event on the RTC WakeUp Timer associated Exti line.
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_EVENT()    (EXTI->EMR |= RTC_EXTI_LINE_WAKEUPTIMER_EVENT)
+ 
+/**
+  * @brief  Disable event on the RTC WakeUp Timer associated Exti line.
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_EVENT()   (EXTI->EMR &= ~(RTC_EXTI_LINE_WAKEUPTIMER_EVENT))
+ 
+/**
+  * @brief  Enable falling edge trigger on the RTC WakeUp Timer associated Exti line. 
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_FALLING_EDGE()   (EXTI->FTSR |= RTC_EXTI_LINE_WAKEUPTIMER_EVENT)
+ 
+/**
+  * @brief  Disable falling edge trigger on the RTC WakeUp Timer associated Exti line.
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_FALLING_EDGE()  (EXTI->FTSR &= ~(RTC_EXTI_LINE_WAKEUPTIMER_EVENT))
+ 
+/**
+  * @brief  Enable rising edge trigger on the RTC WakeUp Timer associated Exti line.
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_RISING_EDGE()    (EXTI->RTSR |= RTC_EXTI_LINE_WAKEUPTIMER_EVENT)
+ 
+/**
+  * @brief  Disable rising edge trigger on the RTC WakeUp Timer associated Exti line.
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_RISING_EDGE()   (EXTI->RTSR &= ~(RTC_EXTI_LINE_WAKEUPTIMER_EVENT))
+ 
+/**
+  * @brief  Enable rising & falling edge trigger on the RTC WakeUp Timer associated Exti line.
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_RISING_FALLING_EDGE() __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_RISING_EDGE();__HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_FALLING_EDGE();
+ 
+/**
+  * @brief  Disable rising & falling edge trigger on the RTC WakeUp Timer associated Exti line.
+  * This parameter can be:
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_RISING_FALLING_EDGE() __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_RISING_EDGE();__HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_FALLING_EDGE();
+ 
+/**
+  * @brief Check whether the RTC WakeUp Timer associated Exti line interrupt flag is set or not.
+  * @retval Line Status.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_GET_FLAG()              (EXTI->PR & RTC_EXTI_LINE_WAKEUPTIMER_EVENT)
+ 
+/**
+  * @brief Clear the RTC WakeUp Timer associated Exti line flag.
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG()            (EXTI->PR = RTC_EXTI_LINE_WAKEUPTIMER_EVENT)
+ 
+/**
+  * @brief Generate a Software interrupt on the RTC WakeUp Timer associated Exti line.
+  * @retval None.
+  */
+#define __HAL_RTC_WAKEUPTIMER_EXTI_GENERATE_SWIT()         (EXTI->SWIER |= RTC_EXTI_LINE_WAKEUPTIMER_EVENT)
+
+
+/** @defgroup RTCEx_Backup_Registers_Definitions RTCEx Backup Registers Definition
+  * @{
+  */
+#define RTC_BKP_DR0                       ((uint32_t)0x00000000)
+#define RTC_BKP_DR1                       ((uint32_t)0x00000001)
+#define RTC_BKP_DR2                       ((uint32_t)0x00000002)
+#define RTC_BKP_DR3                       ((uint32_t)0x00000003)
+#define RTC_BKP_DR4                       ((uint32_t)0x00000004)
+/**
+  * @}
+  */
+/* !defined(STM32F030x6) && !defined(STM32F030x8) && !defined(STM32F030xC) && !defined(STM32F070x6) && !defined(STM32F070xB) */
+ 
+/** @defgroup RTCEx_Time_Stamp_Edges_definitions RTCEx Time Stamp Edges definition
+  * @{
+  */
+#define RTC_TIMESTAMPEDGE_RISING          ((uint32_t)0x00000000)
+#define RTC_TIMESTAMPEDGE_FALLING         ((uint32_t)0x00000008)
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup RTCEx_TimeStamp_Pin_Selections RTCEx TimeStamp Pin Selection
+  * @{
+  */
+#define RTC_TIMESTAMPPIN_DEFAULT              ((uint32_t)0x00000000)
+ 
+/**
+  * @}
+  */
+ 
+  
+/** @defgroup RTCEx_Tamper_Pins_Definitions RTCEx Tamper Pins Definition
+  * @{
+  */
+#define RTC_TAMPER_1                    RTC_TAFCR_TAMP1E
+#define RTC_TAMPER_2                    RTC_TAFCR_TAMP2E
+#if defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || defined(STM32F091xC) || defined(STM32F098xx)
+#define RTC_TAMPER_3                    RTC_TAFCR_TAMP3E
+#endif
+ 
+/**
+  * @}
+  */
+ 
+ 
+ 
+/** @defgroup RTCEx_Tamper_Trigger_Definitions RTCEx Tamper Trigger Definition
+  * @{
+  */
+#define RTC_TAMPERTRIGGER_RISINGEDGE       ((uint32_t)0x00000000)
+#define RTC_TAMPERTRIGGER_FALLINGEDGE      ((uint32_t)0x00000002)
+#define RTC_TAMPERTRIGGER_LOWLEVEL         RTC_TAMPERTRIGGER_RISINGEDGE
+#define RTC_TAMPERTRIGGER_HIGHLEVEL        RTC_TAMPERTRIGGER_FALLINGEDGE
+ 
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup RTCEx_Tamper_Filter_Definitions RTCEx Tamper Filter Definition
+  * @{
+  */
+#define RTC_TAMPERFILTER_DISABLE   ((uint32_t)0x00000000)  /*!< Tamper filter is disabled */
+ 
+#define RTC_TAMPERFILTER_2SAMPLE   ((uint32_t)0x00000800)  /*!< Tamper is activated after 2
+                                                                consecutive samples at the active level */
+#define RTC_TAMPERFILTER_4SAMPLE   ((uint32_t)0x00001000)  /*!< Tamper is activated after 4
+                                                                consecutive samples at the active level */
+#define RTC_TAMPERFILTER_8SAMPLE   ((uint32_t)0x00001800)  /*!< Tamper is activated after 8
+                                                                consecutive samples at the active level. */
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup RTCEx_Tamper_Sampling_Frequencies_Definitions RTCEx Tamper Sampling Frequencies Definition  
+  * @{
+  */
+#define RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV32768  ((uint32_t)0x00000000)  /*!< Each of the tamper inputs are sampled
+                                                                             with a frequency =  RTCCLK / 32768 */
+#define RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV16384  ((uint32_t)0x00000100)  /*!< Each of the tamper inputs are sampled
+                                                                             with a frequency =  RTCCLK / 16384 */
+#define RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV8192   ((uint32_t)0x00000200)  /*!< Each of the tamper inputs are sampled
+                                                                             with a frequency =  RTCCLK / 8192  */
+#define RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV4096   ((uint32_t)0x00000300)  /*!< Each of the tamper inputs are sampled
+                                                                             with a frequency =  RTCCLK / 4096  */
+#define RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV2048   ((uint32_t)0x00000400)  /*!< Each of the tamper inputs are sampled
+                                                                             with a frequency =  RTCCLK / 2048  */
+#define RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV1024   ((uint32_t)0x00000500)  /*!< Each of the tamper inputs are sampled
+                                                                             with a frequency =  RTCCLK / 1024  */
+#define RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV512    ((uint32_t)0x00000600)  /*!< Each of the tamper inputs are sampled
+                                                                             with a frequency =  RTCCLK / 512   */
+#define RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV256    ((uint32_t)0x00000700)  /*!< Each of the tamper inputs are sampled
+                                                                             with a frequency =  RTCCLK / 256   */
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup RTCEx_Tamper_Pin_Precharge_Duration_Definitions RTCEx Tamper Pin Precharge Duration Definition
+  * @{
+  */
+#define RTC_TAMPERPRECHARGEDURATION_1RTCCLK ((uint32_t)0x00000000)  /*!< Tamper pins are pre-charged before
+                                                                         sampling during 1 RTCCLK cycle */
+#define RTC_TAMPERPRECHARGEDURATION_2RTCCLK ((uint32_t)0x00002000)  /*!< Tamper pins are pre-charged before
+                                                                         sampling during 2 RTCCLK cycles */
+#define RTC_TAMPERPRECHARGEDURATION_4RTCCLK ((uint32_t)0x00004000)  /*!< Tamper pins are pre-charged before
+                                                                         sampling during 4 RTCCLK cycles */
+#define RTC_TAMPERPRECHARGEDURATION_8RTCCLK ((uint32_t)0x00006000)  /*!< Tamper pins are pre-charged before
+                                                                         sampling during 8 RTCCLK cycles */
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup RTCEx_Tamper_TimeStampOnTamperDetection_Definitions RTCEx Tamper TimeStampOnTamperDetection Definition
+  * @{
+  */
+#define RTC_TIMESTAMPONTAMPERDETECTION_ENABLE  ((uint32_t)RTC_TAFCR_TAMPTS)  /*!< TimeStamp on Tamper Detection event saved */
+#define RTC_TIMESTAMPONTAMPERDETECTION_DISABLE ((uint32_t)0x00000000)        /*!< TimeStamp on Tamper Detection event is not saved */
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup RTCEx_Tamper_Pull_UP_Definitions RTCEx Tamper Pull UP Definition
+  * @{
+  */
+#define RTC_TAMPER_PULLUP_ENABLE  ((uint32_t)0x00000000)            /*!< Tamper pins are pre-charged before sampling */
+#define RTC_TAMPER_PULLUP_DISABLE ((uint32_t)RTC_TAFCR_TAMPPUDIS)   /*!< TimeStamp on Tamper Detection event is not saved */
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup RTCEx_Wakeup_Timer_Definitions RTCEx Wakeup Timer Definition
+  * @{
+  */
+#define RTC_WAKEUPCLOCK_RTCCLK_DIV16        ((uint32_t)0x00000000)
+#define RTC_WAKEUPCLOCK_RTCCLK_DIV8         ((uint32_t)0x00000001)
+#define RTC_WAKEUPCLOCK_RTCCLK_DIV4         ((uint32_t)0x00000002)
+#define RTC_WAKEUPCLOCK_RTCCLK_DIV2         ((uint32_t)0x00000003)
+#define RTC_WAKEUPCLOCK_CK_SPRE_16BITS      ((uint32_t)0x00000004)
+#define RTC_WAKEUPCLOCK_CK_SPRE_17BITS      ((uint32_t)0x00000006)
+ 
+