main.cpp

00001 #include "mbed.h"
00002 #include "WakeUp.h"
00003 
00004 DigitalOut myled(LED1);
00005 
00006 void ClearWakeUp(void);
00007 
00008 int main()
00009 {
00010     myled = 1;
00011     wait(0.2);
00012     myled = 0;
00013     wait(0.2);
00014 
00015     //The low-power oscillator can be quite inaccurate on some targets
00016     //this function calibrates it against the main clock
00017     WakeUp::calibrate();
00018 
00019 
00020     WakeUp::set_ms(5000);
00021     ClearWakeUp();
00022 
00023     printf("Entering Standby Mode\r\n");
00024 
00025     HAL_PWR_EnterSTANDBYMode();
00026     
00027     //This will never be executed
00028     printf("After sleep\r\n");
00029 
00030 }
00031 void ClearWakeUp(void)
00032 {
00033     PWR->CR |= PWR_CR_DBP;      //Enable power domain
00034     RTC->WPR = 0xCA;            //Disable RTC write protection
00035     RTC->WPR = 0x53;
00036 
00037     __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
00038     __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
00039 
00040     RTC->WPR = 0xFF;        //Enable RTC write protection
00041     PWR->CR &= ~PWR_CR_DBP; //Disable power domain
00042 }