WeMOS: D1 R1 mini LCD DS1307 I2C RTC NTP update daily
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Code
#include "Arduino.h"
#include "uRTCLib.h"
// uRTCLib rtc;
uRTCLib rtc(0x68);
/*
I2C LCD ESP8266-Wenos D1 Mini
GND GND
VCC VIN
SDA D2
SCL D1
*/
#include <LiquidCrystal_I2C.h>
#include <NTPClient.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
// set the LCD number of columns and rows
int lcdColumns = 16;
int lcdRows = 2;
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);
const char *ssid = "o1";
const char *password = "Dzaq1993!";
const long utcOffsetInSeconds = 25200; // GMT+7 Jakarta
// Define NTP Client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org", utcOffsetInSeconds);
char cMonth[12][4] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
char DoW[7][10] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
void setup() {
// Serial.begin(9600);
// delay(3000); // wait for console opening
lcd.begin( 5, 4 );// initialize LCD
lcd.init();
// turn on LCD backlight
lcd.backlight();
lcd.clear();
lcd.setCursor(0,0);
URTCLIB_WIRE.begin();
WiFi.begin(ssid, password);
while ( WiFi.status() != WL_CONNECTED ) {
delay ( 500 );
lcd.print ( "." );
}
lcd.clear();
lcd.setCursor(0,0);
lcd.print ( "WiFi connected" );
delay( 3000 );
lcd.clear();
timeClient.begin();
}
void loop() {
rtc.refresh();
if( rtc.hour()==1 && rtc.minute()==0 ) {
timeClient.update();
// Following line sets the RTC with an explicit date & time
// for example to set April 3 13 2023 at 12:56 you would call:
// rtc.set(0, 56, 12, 5, 3, 4, 23);
// rtc.set(second, minute, hour, dayOfWeek, dayOfMonth, month, year)
// set day of week (1=Sunday, 7=Saturday)
rtc.set(timeClient.getSeconds(), timeClient.getMinutes(), timeClient.getHours(), timeClient.getDay(), rtc.day(), rtc.month(), rtc.year());
delay(59000);
}
lcd.setCursor(0,0);
lcd.print( DoW[rtc.dayOfWeek()] );
lcd.print(", ");
lcd.print(rtc.day());
lcd.print(' ');
// lcd.print(rtc.month());
lcd.print(cMonth[rtc.month()-1]);
lcd.print(' ');
lcd.print(2000+rtc.year());
lcd.setCursor(4,1);
print2digits(rtc.hour());
lcd.print(':');
print2digits(rtc.minute());
lcd.print(':');
print2digits(rtc.second());
delay(1000);
}
void print2digits(int number) {
if (number >= 0 && number < 10) {
lcd.write('0');
}
lcd.print(number);
}