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/* ---By gsmcable---
Connect
Arduino I2C_LCD
5V VCC
GND GND
D2 SDA SDA
D1 SCL SCL
D4 DS18B20
*/
#include <ESP8266WiFi.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#include <WiFiUdp.h>
#include <WiFiClientSecure.h>
#include <NTPClient.h>
#include <Time.h>
#include <TimeLib.h>
#include <Timezone.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
#define ONE_WIRE_BUS 2 // DS18B20 pin
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature DS18B20(&oneWire);
float oldTemp;
// Define NTP properties
#define NTP_OFFSET 60 * 60 // In seconds
#define NTP_INTERVAL 60 * 1000 // In miliseconds
#define NTP_ADDRESS "asia.pool.ntp.org" // change this to whatever pool is closest (see ntp.org)
// Set up the NTP UDP client
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, NTP_ADDRESS, NTP_OFFSET, NTP_INTERVAL);
const char* ssid = "xxx"; // insert your own ssid
const char* password = "xxx"; // and your wifi password
String date; //create the string for the date which will be printed on the lcd screen below
String t; // create the string for the time
//顯示字符
#if defined(ARDUINO) && ARDUINO >= 100
#define printByte(args) write(args);
#else
#define printByte(args) print(args,BYTE);
#endif
//要顯示的漢字編碼，定義為一個(gè)數(shù)組
uint8_t nian[8] = {0x08,0x0f,0x12,0x0f,0x0a,0x1f,0x02,0x02,};//年
uint8_t yue[8] = {0x0f,0x09,0x0f,0x09,0x0f,0x09,0x0b,0x11,};//月
uint8_t ri[8] = {0x1F,0x11,0x11,0x1F,0x11,0x11,0x1F,0x00,};//日
uint8_t dian[8] = {0x02,0x05,0x02,0x00,0x00,0x00,0x00,0x00,};//點(diǎn)
const char * days[] = {"Sunday", "Monday", "Tuesday", "**Wed**", "*Thurs*", "Friday", "**Sat*"} ;//my screen is 20 across to can't fit in Wednesday
const char * months[] = {"01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12"} ;
const char * ampm[] = {"AM", "PM"} ;//not used in my version
void setup()
{
Serial.begin(115200); // most D1 use 115200 but this could vary. Included for serial monitor debugging
timeClient.begin(); // Start the NTP UDP client
oldTemp = -1;
int cursorPosition = 0;
lcd.init(); // initialize the lcd
lcd.backlight();
lcd.setCursor(0, 0);
lcd.print("Connect");
lcd.setCursor(0, 2);
lcd.print(ssid);
// Connect to wifi
Serial.println("");
Serial.print("Connecting to ");
Serial.print(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to WiFi at ");
Serial.print(WiFi.localIP());
Serial.println("");
delay(1000);
lcd.clear();
}
void loop()
{
float temp;
DS18B20.requestTemperatures();
temp = DS18B20.getTempCByIndex(0);
Serial.print("Temperature: ");
Serial.println(temp);
//////////////////////// The first part of the loop is for the internet clock
if (WiFi.status() == WL_CONNECTED) //Check WiFi connection status
{
date = ""; // clear the variables
t = "";
// update the NTP client and get the UNIX UTC timestamp
timeClient.update();
unsigned long epochTime = timeClient.getEpochTime();
// convert received time stamp to time_t object
time_t local, utc;
utc = epochTime;
TimeChangeRule BST = {"BST", Last, Sun, Mar, 1, 420}; //British Summer Time - change these variables for your local time
TimeChangeRule GMT = {"GMT", Last, Sun, Oct, 2, 360}; //Standard Time
Timezone CN(BST, GMT);
local = CN.toLocal(utc);
// format the time to 12-hour format with AM/PM and add seconds. t (time) is made up of the variables below which are then printed as a string
t += hour(local);
t += ":";
if (minute(local) < 10) // add a zero if minute is under 10
t += "0";
t += minute(local);
t += ":";
if (second(local) < 10)
t += "0";
t += second(local);
//t += ampm[isPM(local)];
// Display the date and time
Serial.println("");
Serial.print("Local date: ");
Serial.print(date);
Serial.println("");
Serial.print("Local time: ");
Serial.print(t);
lcd.createChar(1, nian);
lcd.createChar(2, yue);
lcd.createChar(3, ri);
lcd.createChar(4, dian);
lcd.setCursor(1, 0);
lcd.print(year(local));
lcd.setCursor(5, 0);
lcd.printByte(1); //年
lcd.setCursor(6, 0);
lcd.print(months[month(local) - 1]);
lcd.setCursor(8, 0);
lcd.printByte(2); //月
lcd.setCursor(9, 0);
lcd.print(day(local));
lcd.setCursor(11, 0);
lcd.printByte(3); //日
lcd.setCursor(13, 0);
lcd.print(days[weekday(local) - 1]);
lcd.setCursor(3, 1);
lcd.print("Time:");
lcd.setCursor(9, 1);
lcd.print(t);
lcd.setCursor(1, 2);
lcd.print("------------------");
lcd.setCursor(3, 3);
lcd.print("Temp:");
lcd.setCursor(9, 3);
lcd.print(temp);
lcd.setCursor(14, 3);
lcd.printByte(4); //點(diǎn)
lcd.setCursor(15, 3);
lcd.print("C");
}
else // this part is a step to attempt to connect to wifi again if disconnected
{
lcd.setCursor(0, 0);
lcd.print("Connect");
//display.display();
WiFi.begin(ssid, password);
//display.drawString(0, 24, "Connected.");
lcd.clear();
lcd.setCursor(0, 1);
lcd.print("Connected.");
delay(1000);
}
}

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