pcf8563_time_sync.ino

Go to the documentation of this file.

 
#include <RtcDrv.hpp>
#if defined(ARDUINO_ARCH_ESP32)
#include <time.h>
#include <WiFi.h>
#include <esp_sntp.h>
 
 
#ifndef SENSOR_SDA
#define SENSOR_SDA  42
#endif
 
#ifndef SENSOR_SCL
#define SENSOR_SCL  41
#endif
 
#ifndef SENSOR_IRQ
#define SENSOR_IRQ  14
#endif
 
const char *ssid       = "YOUR_SSID";
const char *password   = "YOUR_PASS";
 
const char *ntpServer1 = "pool.ntp.org";
const char *ntpServer2 = "time.nist.gov";
const long  gmtOffset_sec = 3600;
const int   daylightOffset_sec = 3600;
 
const char *time_zone = "CST-8";  // TimeZone rule for Europe/Rome including daylight adjustment rules (optional)
 
SensorPCF8563 rtc;
uint32_t intervalue;
 
 
// Callback function (get's called when time adjusts via NTP)
void timeavailable(struct timeval *t)
{
    Serial.println("Got time adjustment from NTP, Write the hardware clock");
 
    // Write synchronization time to hardware
    rtc.hwClockWrite();
}
 
void setup()
{
    Serial.begin(115200);
    while (!Serial);
 
    pinMode(SENSOR_IRQ, INPUT_PULLUP);
 
    if (!rtc.begin(Wire, SENSOR_SDA, SENSOR_SCL)) {
        Serial.println("Failed to find PCF8563 - check your wiring!");
        while (1) {
            delay(1000);
        }
    }
 
    // set notification call-back function
    sntp_set_time_sync_notification_cb( timeavailable );
 
    sntp_servermode_dhcp(1);    // (optional)
 
    // configTime(gmtOffset_sec, daylightOffset_sec, ntpServer1, ntpServer2);
 
    configTzTime(time_zone, ntpServer1, ntpServer2);
 
    //connect to WiFi
    Serial.print("Connecting to ");
    Serial.println(ssid);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println(" CONNECTED");
 
}
 
 
 
 
void loop()
{
    if (millis() - intervalue > 1000) {
 
        intervalue = millis();
 
        // hardware clock
        struct tm hwTimeinfo;
        rtc.getDateTime(&hwTimeinfo);
        Serial.print("Hardware clock :");
        Serial.println(&hwTimeinfo, "%A, %B %d %Y %H:%M:%S");
 
        // system clock
        struct tm timeinfo;
        if (!getLocalTime(&timeinfo)) {
            Serial.println("No time available (yet)");
            return;
        }
 
        Serial.print("System   clock :");
        Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S");
        Serial.println();
 
    }
}
#else
void setup()
{
    Serial.begin(115200);
}
 
void loop()
{
    Serial.println("Examples only ESP32"); delay(1000);
}
#endif