Arduino for STM32

Code: Select all

#include <STM32RTC.h>

#include <STM32LowPower.h>

STM32RTC& rtc = STM32RTC::getInstance();
volatile bool sleeping = false;
void callback(void*data)
{
	sleeping = false;
	Serial.println("Callback!");
	Serial.flush();
}

void setup() {
	// put your setup code here, to run once:
	Serial.begin(9600);
	Serial.println("Started");
	Serial.flush();

	LowPower.begin();
	
	rtc.begin();

	if (!rtc.isTimeSet())
	{
		Serial.println("Time did not persist.");
		Serial.flush();
	}
	else
	{
		Serial.println("Time persisted!");
		Serial.flush();
	}
	rtc.setHours(5);
	rtc.setMinutes(5);
	rtc.setSeconds(1);
	rtc.setWeekDay(1);
	rtc.setDay(1);
	rtc.setMonth(1);
	rtc.setYear(20);

	LowPower.enableWakeupFrom(&rtc, callback);
}

void loop() {
	Serial.println("Shutting down!");
	Serial.flush();


	int epochNow = rtc.getEpoch();
	int epochEnd = epochNow + 5;
	
	sleeping = true;
	rtc.setAlarmEpoch(epochEnd);
	LowPower.deepSleep();
	while (sleeping)
	{
	}

	Serial.print("EPOCH: ");
	Serial.println(rtc.getEpoch());
	
	Serial.println("Done!");
	Serial.flush();
}

Code: Select all

#include <STM32RTC.h>

#include <STM32LowPower.h>

STM32RTC& rtc = STM32RTC::getInstance();
volatile bool sleeping = false;
void callback(void* data)
{
	sleeping = false;
	Serial.println("Callback!");
	Serial.flush();
}

void setup() {
	// put your setup code here, to run once:
	Serial.begin(9600);
	Serial.println("Started");
	Serial.flush();

	LowPower.begin();

	rtc.begin();
	rtc.setClockSource(STM32RTC::LSE_CLOCK);

	if (!rtc.isTimeSet())
	{
		Serial.println("Time did not persist.");
		Serial.flush();
	}
	else
	{
		Serial.println("Time persisted!");
		Serial.flush();
	}
	rtc.setHours(5);
	rtc.setMinutes(5);
	rtc.setSeconds(1);
	rtc.setWeekDay(1);
	rtc.setDay(1);
	rtc.setMonth(1);
	rtc.setYear(20);
	LowPower.enableWakeupFrom(&rtc, callback);
}

void loop() {
	Serial.println("Shutting down!");
	Serial.flush();
	LowPower.shutdown(1000);
	Serial.println("Done!");
	Serial.flush();
}