#Arduino #ESP8266 #OLED #LCD #I2C #IIC #NTP #網路時鐘 #Clock #李進衛
I2C LCD
Wemos D1 Mini Board
Wemos D1 Mini Board購買
函數庫下載位址：
//#include <LiquidCrystal_I2C.h>
/* 網路時鐘，配合4位顯示LED範例
* 請注意：本範例必須配合已焊控制板的4位LED哦！
*
* 網拍賣場：
* http://goods.ruten.com.tw/item/show?21649712601470
*
* WeMos D1 R2：
* http://goods.ruten.com.tw/item/show?21639776266588
*
* 程式整理：Jason--> 2018-03-05 by lee chin Wei append I2C LCD
* http://blog.geeks.tw
*
* 本範例要配合Frankie Chu寫的Digital Tube。
*
* 下載網址：
* https://brainy-bits.com/wp-content/uploads/2015/01/DigitalTube_Library.zip
* 程式設計：李進衛
* 本範例要配合 Paul Stoffregen寫的Time函式庫：
* https://github.com/PaulStoffregen/Time
*/
#include <TimeLib.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <TM1637.h> // "
#include <Wire.h> // IIC communication I2C使用的函數
//#include <avr/io.h>
#include <LiquidCrystal_I2C.h>
#define CLK D6 //CLK pin，可自行決定接到哪個PIN
#define DIO D7 //DIO pin，可自行決定接到哪個PIN
TM1637 tm1637(CLK,DIO);
LiquidCrystal_I2C lcd(0x3f,16,2); // Check I2C address of LCD, normally 0x27 or 0x3F
int point_flag =0;
const char ssid[] = "your network SSID"; // your network SSID (name)
const char pass[] = "your network password"; // your network password
char daysOfTheWeek[7][12] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
// NTP Server:
static const char ntpServerName[] = "us.pool.ntp.org";
const int timeZone = 8; //台灣時區+8
int hourH = 0; //
int hourL = 0; //
int minH = 0; //
int minL = 0; //
int secH = 0; //
int secL = 0; //
int monH = 0;
int monL = 0;
int dayH = 0;
int dayL = 0;
int dayOfWeek = 0;
//建立與NTP的連線
WiFiUDP Udp;
unsigned int localPort = 8888; // local port to listen for UDP packets
time_t getNtpTime();
void setup()
{
tm1637.init();
tm1637.set(BRIGHT_TYPICAL); //BRIGHT_TYPICAL = 2,BRIGHT_DARKEST = 0,BRIGHTEST = 7;
tm1637.display(0,0); //設定每一位燈號顯示的內容，參數1：燈號，參數2：顯示的數字
tm1637.display(1,0);
tm1637.display(2,0);
tm1637.display(3,0);
Wire.begin(D14,D15); //一定要加這一行還可以正常顯示出來 (0,2); //sda=0 | D3, scl=2 | D4
lcd.backlight();
lcd.clear();
// lcd.noBlink();
lcd.home(); // At column=0, row=0
Serial.begin(115200);
while (!Serial) ; // Needed for Leonardo only
delay(250);
//建立WiFi連線
Serial.println("NTP 網路時鐘");
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.print("IP number assigned by DHCP is ");
Serial.println(WiFi.localIP());
Serial.println("Starting UDP");
Udp.begin(localPort);
Serial.print("Local port: ");
Serial.println(Udp.localPort());
Serial.println("waiting for sync");
setSyncProvider(getNtpTime);
setSyncInterval(300);
}
time_t prevDisplay = 0; // 記錄上一次的時間，如果相同，LED就不用更新
void loop()
{
if (timeStatus() != timeNotSet) {
if (now() != prevDisplay) { //時間變化就顯示
prevDisplay = now(); //把目前時間丟給prevDisplay
// Serial.println(now());
digitalClockDisplay(); //呼叫顯示時間的副程式
}
}
}
void digitalClockDisplay()
{
// lcd.home(); // At column=0, row=0
//設定每一位燈號顯示的內容，參數1：燈號，參數2：顯示的數字
tm1637.display(0,hour() / 10);
tm1637.display(1,hour() % 10);
tm1637.display(2,minute() / 10);
tm1637.display(3,minute() % 10);
//==============================================
monH = (month()/10);
monL = (month()%10);
dayH = (day()/10);
dayL = (day()%10);
hourH = (hour()/10) ;
// hourH = hourH/10;
// Serial.print(hourH);
hourL = (hour()%10);
// Serial.print(hourL);
minH = (minute() / 10);
// Serial.print(minH);
minL = (minute() % 10);
// Serial.print(hourL);
secH = (second() /10);
// Serial.print(secH);
secL = (second() %10);
// Serial.println(secL);
//================================================
lcd.setCursor(0, 0);
lcd.print(year());
lcd.setCursor(4,0);
lcd.print("/");
lcd.setCursor(5,0);
lcd.print(monH,DEC);
lcd.setCursor(6,0);
lcd.print(monL,DEC);
lcd.setCursor(7,0);
lcd.print("/");
lcd.setCursor(8,0);
lcd.print(dayH,DEC);
lcd.setCursor(9,0);
lcd.print(dayL,DEC);
// dayOfWeek = weekday();
lcd.setCursor(11,0);
lcd.print(daysOfTheWeek[weekday()-1]);
/*
switch(dayOfWeek){
case 1:
lcd.setCursor(11,0);
lcd.print("Sun");
// Serial.println("Sunday");
break;
case 2:
lcd.setCursor(11,0);
lcd.print("Mon");
// Serial.println("Monday");
break;
case 3:
lcd.setCursor(11,0);
lcd.print("Tue");
// Serial.println("Tuesday");
break;
case 4:
lcd.setCursor(11,0);
lcd.print("Wed");
// Serial.println("Wednesday");
break;
case 5:
lcd.setCursor(11,0);
lcd.print("Thu");
// Serial.println("Thursday");
break;
case 6:
lcd.setCursor(11,0);
lcd.print("Fri");
// Serial.println("Friday");
break;
case 7:
lcd.setCursor(11,0);
lcd.print("Sat");
// Serial.println("Saturday");
break;
}
*/
// Serial.print(year());
// Serial.print("/");
// Serial.print(month());
// Serial.print("/");
// Serial.print(day());
// Serial.print("===>");
// Serial.println(weekday());
lcd.setCursor(0, 1);
lcd.print(hourH,DEC);
lcd.setCursor(1, 1);
lcd.print(hourL,DEC);
lcd.setCursor(2, 1);
lcd.print(":");
lcd.setCursor(3, 1);
lcd.print(minH,DEC);
lcd.setCursor(4, 1);
lcd.print(minL,DEC);
lcd.setCursor(5, 1);
lcd.print(":");
lcd.setCursor(6, 1);
lcd.print(secH,DEC);
lcd.setCursor(7, 1);
lcd.print(secL,DEC);
lcd.setCursor(16,1);
// lcd.home(); // At column=0, row=0
// lcd.noBlink();
// Serial.print(hour());
// Serial.print(":");
// Serial.print(minute());
// Serial.print(":");
// Serial.println(second());
//顯示時和分之間的：，如果目前是顯示，就設定下次不顯示
if(point_flag){
tm1637.point(POINT_OFF);
point_flag = 0;
}else{
tm1637.point(POINT_ON);
point_flag = 1;
}
}
/*-------- NTP 程式碼 ----------*/
const int NTP_PACKET_SIZE = 48; // NTP time is in the first 48 bytes of message
byte packetBuffer[NTP_PACKET_SIZE]; //buffer to hold incoming & outgoing packets
time_t getNtpTime()
{
IPAddress ntpServerIP; // NTP server's ip address
while (Udp.parsePacket() > 0) ; // discard any previously received packets
Serial.println("Transmit NTP Request");
// get a random server from the pool
WiFi.hostByName(ntpServerName, ntpServerIP);
Serial.print(ntpServerName);
Serial.print(": ");
Serial.println(ntpServerIP);
sendNTPpacket(ntpServerIP);
uint32_t beginWait = millis();
while (millis() - beginWait < 1500) {
int size = Udp.parsePacket();
if (size >= NTP_PACKET_SIZE) {
Serial.println("Receive NTP Response");
Udp.read(packetBuffer, NTP_PACKET_SIZE); // read packet into the buffer
unsigned long secsSince1900;
// convert four bytes starting at location 40 to a long integer
secsSince1900 = (unsigned long)packetBuffer[40] << 24;
secsSince1900 |= (unsigned long)packetBuffer[41] << 16;
secsSince1900 |= (unsigned long)packetBuffer[42] << 8;
secsSince1900 |= (unsigned long)packetBuffer[43];
return secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR;
}
}
Serial.println("No NTP Response :-(");
return 0; // return 0 if unable to get the time
}
// send an NTP request to the time server at the given address
void sendNTPpacket(IPAddress &address)
{
// set all bytes in the buffer to 0
memset(packetBuffer, 0, NTP_PACKET_SIZE);
// Initialize values needed to form NTP request
// (see URL above for details on the packets)
packetBuffer[0] = 0b11100011; // LI, Version, Mode
packetBuffer[1] = 0; // Stratum, or type of clock
packetBuffer[2] = 6; // Polling Interval
packetBuffer[3] = 0xEC; // Peer Clock Precision
// 8 bytes of zero for Root Delay & Root Dispersion
packetBuffer[12] = 49;
packetBuffer[13] = 0x4E;
packetBuffer[14] = 49;
packetBuffer[15] = 52;
// all NTP fields have been given values, now
// you can send a packet requesting a timestamp:
Udp.beginPacket(address, 123); //NTP requests are to port 123
Udp.write(packetBuffer, NTP_PACKET_SIZE);
Udp.endPacket();
}
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