PCF85063A - Initialization

Connections for this example

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Initializing

For first-time use, we must initialize the RTC by providing it with the current time and date. First, include the library and create an instance of the RTC object, then initialize it in the setup() function:

// Include the library
#include "PCF85063A-SOLDERED.h"

// Create an instance of the RTC
PCF85063A rtc; 


void setup()
{
    Serial.begin(115200); // Start serial communication with the PC using a baud rate of 115200
    rtc.begin();  // Initialize RTC module

    //  setTime(hour, minute, sec);
    rtc.setTime(11, 53, 00); // 24-hour mode, e.g., 11:53:00
    //  setDate(weekday, day, month, yr);
    rtc.setDate(1, 31, 3, 2025); // 0 for Sunday, e.g., Monday, 31.3.2025.
}

rtc.begin()

Initializes the RTC, setting up communication over I2C

Returns value: None

rtc.setTime(uint8_t hour, uint8_t minute, uint8_t second)

Sets the time on the RTC

Returns value: None

Function parameters:

Type	Name	Description
uint8_t	hour	What hour you want to set
uint8_t	minute	What minute you want to set
uint8_t	second	What second you want to set

rtc.setDate(uint8_t weekday, uint8_t day, uint8_t month, uint16_t yr)

Sets the date on the RTC

Returns value: None

Function parameters:

Type	Name	Description
uint8_t	weekday	What weekday you want to set
uint8_t	day	What day you want to set
uint8_t	month	What month you want to set
uint16_t	year	What year you want to set