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8 changes: 4 additions & 4 deletions src/STM32LowPower.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -177,24 +177,24 @@ void STM32LowPower::programRtcWakeUp(uint32_t millis, LP_Mode lp_mode)
int epoc;
uint32_t sec;
STM32RTC& rtc = STM32RTC::getInstance();
STM32RTC::RTC_Source_Clock clkSrc = rtc.getClockSource();
STM32RTC::Source_Clock clkSrc = rtc.getClockSource();

switch(lp_mode) {
case IDLE_MODE:
case SLEEP_MODE:
break;
// LSI or LSE must be selected as clock source to wakeup the device.
case DEEP_SLEEP_MODE:
clkSrc = (clkSrc == STM32RTC::RTC_HSE_CLOCK) ? STM32RTC::RTC_LSI_CLOCK : clkSrc;
clkSrc = (clkSrc == STM32RTC::HSE_CLOCK) ? STM32RTC::LSI_CLOCK : clkSrc;
break;
default:
case SHUTDOWN_MODE:
#ifdef STM32L4xx
// For shutdown mode LSE have to be used (STM32L4 series only)
clkSrc = STM32RTC::RTC_LSE_CLOCK;
clkSrc = STM32RTC::LSE_CLOCK;
#else
// LSE or LSI
clkSrc = (clkSrc == STM32RTC::RTC_HSE_CLOCK) ? STM32RTC::RTC_LSI_CLOCK : clkSrc;
clkSrc = (clkSrc == STM32RTC::HSE_CLOCK) ? STM32RTC::LSI_CLOCK : clkSrc;
#endif
break;
}
Expand Down