RTC

begin()

Function:

Initialize the RTC clock.

Pay Attention:
1.If you do not want to initialize the RTC clock with M5.begin (), call this Function before using RTC.

Example:

#include <M5Core2.h>

void setup() {
  M5.Rtc.begin();  //Initialize the RTC clock.
}

void loop() {
}

SetTime()

Function:

Set real-time clock time.

Syntax:

void SetTime(RTC_TimeTypeDef* RTC_TimeStruct)

Example:

#include <M5Core2.h>

RTC_TimeTypeDef TimeStruct;
void setup() {
  M5.begin();

  TimeStruct.Hours   = 18;    //Set the specific time of the real-time clock structure.
  TimeStruct.Minutes = 56;
  TimeStruct.Seconds = 10;
  M5.Rtc.SetTime(&TimeStruct);    //Writes the set time to the real-time clock.
}
void loop(){}

GetTime()

Function:

Get real-time clock time.

Syntax:

void GetTime(RTC_TimeTypeDef* RTC_TimeStruct)

Example:

#include <M5Core2.h>

RTC_TimeTypeDef TimeStruct;
void setup() {
  M5.begin();
  M5.Lcd.println("RTC Time TEST");
  TimeStruct.Hours   = 18;
  TimeStruct.Minutes = 56;
  TimeStruct.Seconds = 10;
  M5.Rtc.SetTime(&TimeStruct);
}

void loop() {
  M5.Rtc.GetTime(&TimeStruct);    
  M5.Lcd.setCursor(0, 15);
  M5.Lcd.printf("Time: %02d : %02d : %02d/n",TimeStruct.Hours, TimeStruct.Minutes, TimeStruct.Seconds);
  delay(500);
}

SetData()

Function:

Set real-time clock date.

Syntax:

void SetData(RTC_TimeTypeDef* RTC_DateStruct)

Example:

#include <M5Core2.h>

RTC_DateTypeDef DateStruct;
void setup() {
  M5.begin();
  DateStruct.WeekDay = 3;
  DateStruct.Month = 3;
  DateStruct.Date = 22;
  DateStruct.Year = 2019;
  M5.Rtc.SetData(&DateStruct);
}
void loop(){}

GetData()

Function:

Get real-time clock date.

Syntax:

void GetData(RTC_TimeTypeDef* RTC_DateStruct)

Example:

#include <M5Core2.h>

RTC_DateTypeDef DateStruct;
void setup() {
  M5.begin();
  M5.Lcd.println("RTC Date TEST");
  DateStruct.WeekDay = 5;
  DateStruct.Month = 7;
  DateStruct.Date = 23;
  DateStruct.Year = 2021;
  M5.Rtc.SetDate(&DateStruct);
}

void loop() {
  M5.Rtc.GetDate(&DateStruct);    //Get the date of the real-time clock. 
  M5.Lcd.setCursor(0, 15);
  M5.Lcd.printf("Data: %04d-%02d-%02d/n",DateStruct.Year, DateStruct.Month,DateStruct.Date);    //Output the date of the current real-time clock on the screen. 
  M5.Lcd.printf("Week: %d/n",DateStruct.WeekDay);
  delay(500);
}

SetAlarmIRQ()

Function:

Setting the interrupt clock

Syntax:

int SetAlarmIRQ(int afterSeconds)

int SetAlarmIRQ( const RTC_TimeTypeDef &RTC_TimeStruct)

int SetAlarmIRQ( const RTC_DateTypeDef &RTC_DateStruct, const RTC_TimeTypeDef &RTC_TimeStruct)

Example:

#include <M5Core2.h>

RTC_TimeTypeDef TimeStruct;
void setup() {
  M5.begin();
  M5.Lcd.println("RTC SetAlarmIQR");
  TimeStruct.Hours   = 18;
  TimeStruct.Minutes = 56;
  TimeStruct.Seconds = 10;
  M5.Rtc.SetTime(&TimeStruct);
}

void loop() {
  M5.update();
  M5.Rtc.GetTime(&TimeStruct);
  M5.Lcd.setCursor(0, 15);
  M5.Lcd.printf("Time: %02d : %02d : %02d/n",TimeStruct.Hours, TimeStruct.Minutes, TimeStruct.Seconds);
  if(M5.BtnA.wasPressed()){
    M5.Lcd.println("M5Core2 Will Close, Restore After 5 seconds ");
    delay(2000);
    M5.Rtc.clearIRQ();
    M5.Rtc.SetAlarmIRQ(5);
    delay(10);
    M5.Axp.PowerOff();
  }
}

clearIRQ()

Function:

Clear interrupt request

Syntax:

void clearIRQ()

disableIRQ()

Function:

Turn off interrupt request

Syntax:

void disableIRQ()

On This Page