Diff: main.cpp

Revision:

0:1ecaa40f74d0

Child:

1:085a87258f10

--- /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
+
+}
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