По немногочисленным просьбам, не большей проект на ESP8266, Часы с синхронизацией с сервером точного времени и выводом на модуль 7 сегментного индикатора TM1637
ниже код из видео
Как все подключено:
Если использовать NodeMCU
Железки на али:
7-segments TM1637
NodeMcu Lua Development Board
ESP8266 ESP-01
Код:
под спойлером
/* Udp NTP Client Get the time from a Network Time Protocol (NTP) time server Demonstrates use of UDP sendPacket and ReceivePacket For more on NTP time servers and the messages needed to communicate with them, see http://en.wikipedia.org/wiki/Network_Time_Protocol created 4 Sep 2010 by Michael Margolis modified 9 Apr 2012 by Tom Igoe updated for the ESP8266 12 Apr 2015 by Ivan Grokhotkov This code is in the public domain. */ #include <ESP8266WiFi.h> #include <WiFiUdp.h> #include "TM1637.h" #include <Ticker.h> Ticker flipper; TM1637 tm1637(12, 14); // CLK, DIO (D6, D5) #define GMT 3 // часовой пояс #define brightness 4 // яркость, от 0 до 7 char ssid[] = "WLAN1"; // your network SSID (name) char pass[] = "1231234123"; // your network password byte hour, minute, second; boolean point; unsigned int localPort = 2390; // local port to listen for UDP packets /* Don't hardwire the IP address or we won't get the benefits of the pool. * Lookup the IP address for the host name instead */ //IPAddress timeServer(129, 6, 15, 28); // time.nist.gov NTP server IPAddress timeServerIP; // time.nist.gov NTP server address const char* ntpServerName = "time.nist.gov"; const int NTP_PACKET_SIZE = 48; // NTP time stamp is in the first 48 bytes of the message byte packetBuffer[ NTP_PACKET_SIZE]; //buffer to hold incoming and outgoing packets // A UDP instance to let us send and receive packets over UDP WiFiUDP udp; void setup() { Serial.begin(115200); tm1637.init(); ///tm1637 tm1637.set(brightness); flipper.attach(1, flip); /// прерывание 1 сек Serial.println(); Serial.println(); // We start by connecting to a WiFi network Serial.print("Connecting to "); Serial.println(ssid); WiFi.begin(ssid, pass); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.println("WiFi connected"); Serial.println("IP address: "); Serial.println(WiFi.localIP()); Serial.println("Starting UDP"); udp.begin(localPort); Serial.print("Local port: "); Serial.println(udp.localPort()); oldloop(); /// синхронизируем время при включении } void loop(){ if (second == 30){ // если насчитали 30 сек flipper.detach(); // выключаем прерывание delay(1500); // ждем, чтобы повторно не запустить oldloop(); // синхронизируем время flipper.attach(1, flip); // запускаем прерывание } int8_t TimeDisp[4]; // отправляем всё на экран tm1637.point(point); // управление :, мигаем если запущено прерывание TimeDisp[0] = hour / 10; TimeDisp[1] = hour % 10; TimeDisp[2] = minute / 10; TimeDisp[3] = minute % 10; tm1637.display(TimeDisp); } void oldloop() { //get a random server from the pool WiFi.hostByName(ntpServerName, timeServerIP); sendNTPpacket(timeServerIP); // send an NTP packet to a time server // wait to see if a reply is available delay(1000); int cb = udp.parsePacket(); if (!cb) { Serial.println("no packet yet"); } else { Serial.print("packet received, length="); Serial.println(cb); // We've received a packet, read the data from it udp.read(packetBuffer, NTP_PACKET_SIZE); // read the packet into the buffer //the timestamp starts at byte 40 of the received packet and is four bytes, // or two words, long. First, esxtract the two words: unsigned long highWord = word(packetBuffer[40], packetBuffer[41]); unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]); // combine the four bytes (two words) into a long integer // this is NTP time (seconds since Jan 1 1900): unsigned long secsSince1900 = highWord << 16 | lowWord; Serial.print("Seconds since Jan 1 1900 = " ); Serial.println(secsSince1900); // now convert NTP time into everyday time: Serial.print("Unix time = "); // Unix time starts on Jan 1 1970. In seconds, that's 2208988800: const unsigned long seventyYears = 2208988800UL; // subtract seventy years: unsigned long epoch = secsSince1900 - seventyYears; // print Unix time: Serial.println(epoch); /// корректировка часового пояса и синхронизация epoch = epoch + GMT * 3600; hour = (epoch % 86400L) / 3600; minute = (epoch % 3600) / 60; second = epoch % 60; // print the hour, minute and second: Serial.print("The UTC time is "); // UTC is the time at Greenwich Meridian (GMT) Serial.print((epoch % 86400L) / 3600); // print the hour (86400 equals secs per day) Serial.print(':'); if ( ((epoch % 3600) / 60) < 10 ) { // In the first 10 minutes of each hour, we'll want a leading '0' Serial.print('0'); } Serial.print((epoch % 3600) / 60); // print the minute (3600 equals secs per minute) Serial.print(':'); if ( (epoch % 60) < 10 ) { // In the first 10 seconds of each minute, we'll want a leading '0' Serial.print('0'); } Serial.println(epoch % 60); // print the second } // wait ten seconds before asking for the time again } // send an NTP request to the time server at the given address unsigned long sendNTPpacket(IPAddress& address) { Serial.println("sending NTP packet..."); // 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(); } void flip(){ point = !point; second++; if (second > 59){ second = 0; minute++; } if (minute > 59){ minute = 0; hour++; } if (hour > 23){ hour = 0; } }
Итог:
На плате стабилизатор питания на AMS117-3.3, пара кондеров и немного проводов, ESP8266 ESP-01 установленна в колодку чтобы оставить возможность перепрошивки, и соответственно в коде, в строке «TM1637 tm1637(12, 14);» указаны выходы для CLK, DIO на 0 и 2 GPIO.
Версия 2.0
Код обновленной версии с часами реального времени, подробнее в видео.
Тут
#include <ESP8266WiFi.h> #include <WiFiUdp.h> #include "TM1637.h" #include <Ticker.h> #include <Wire.h> #include <Rtc_Pcf8563.h> // https://codeload.github.com/elpaso/Rtc_Pcf8563/zip/master #define GMT 3 // часовой пояс #define brightness 4 // яркость, от 0 до 7 #define CLK 1 // (12 - D6, 14 - D5) #define DIO 3 #define SDA 0 #define SCL 2 Ticker flipper; TM1637 tm1637(CLK, DIO); Rtc_Pcf8563 rtc; char ssid[] = "WLAN1"; // your network SSID (name) char pass[] = "1231234123"; // your network password byte hour, minute, second; boolean point; unsigned int localPort = 2390; // local port to listen for UDP packets IPAddress timeServerIP; // time.nist.gov NTP server address //const char* ntpServerName = "time.nist.gov"; const char* ntpServerName = "ntp4.stratum2.ru"; const int NTP_PACKET_SIZE = 48; // NTP time stamp is in the first 48 bytes of the message byte packetBuffer[ NTP_PACKET_SIZE]; //buffer to hold incoming and outgoing packets WiFiUDP udp; // A UDP instance to let us send and receive packets over UDP void setup() { // Serial.begin(115200); delay(1000); Wire.begin(SDA, SCL); // rtc.initClock(); //clear out the registers tm1637.init(); ///tm1637 tm1637.set(brightness); flipper.attach(1, flip); /// прерывание 1 сек wificonnect(); // синхронизируем время при включении sync(); // } void loop(){ int8_t TimeDisp[4]; tm1637.point(point); // управление :, мигаем если запущено прерывание rtc.getDateTime(); hour = rtc.getHour(); TimeDisp[0] = hour / 10; TimeDisp[1] = hour % 10; minute = rtc.getMinute(); TimeDisp[2] = minute / 10; TimeDisp[3] = minute % 10; tm1637.display(TimeDisp); // отправляем всё на экран second = rtc.getSecond(); if (minute == 0 && second == 10){ // синхронизируем время в начале каждого часа wificonnect(); sync(); } } // We start by connecting to a WiFi network void wificonnect(){ // Serial.print("Connecting to "); // Serial.println(ssid); WiFi.begin(ssid, pass); int i = 0; while (WiFi.status() != WL_CONNECTED) { delay(500); i++; if (i > 40) break; // Serial.print(i); } // Serial.println(""); // Serial.println("WiFi connected"); // Serial.println("IP address: "); // Serial.println(WiFi.localIP()); // // Serial.println("Starting UDP"); udp.begin(localPort); // Serial.print("Local port: "); // Serial.println(udp.localPort()); } void sync(){ //get a random server from the pool WiFi.hostByName(ntpServerName, timeServerIP); sendNTPpacket(timeServerIP); // send an NTP packet to a time server // wait to see if a reply is available delay(1000); int cb = udp.parsePacket(); if (!cb) { // если пакет не получили, продолжаем работать // Serial.println("no packet yet"); // а можно продолжать пинать сервер в рекурсии // sync(); } else { // Serial.print("packet received, length="); // Serial.println(cb); // We've received a packet, read the data from it udp.read(packetBuffer, NTP_PACKET_SIZE); // read the packet into the buffer //the timestamp starts at byte 40 of the received packet and is four bytes, // or two words, long. First, esxtract the two words: unsigned long highWord = word(packetBuffer[40], packetBuffer[41]); unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]); // combine the four bytes (two words) into a long integer // this is NTP time (seconds since Jan 1 1900): unsigned long secsSince1900 = highWord << 16 | lowWord; // Serial.print("Seconds since Jan 1 1900 = " ); // Serial.println(secsSince1900); // now convert NTP time into everyday time: // Serial.print("Unix time = "); // Unix time starts on Jan 1 1970. In seconds, that's 2208988800: const unsigned long seventyYears = 2208988800UL; // subtract seventy years: unsigned long epoch = secsSince1900 - seventyYears; // print Unix time: // Serial.println(epoch); /// корректировка часового пояса и синхронизация epoch = epoch + GMT * 3600; hour = (epoch % 86400L) / 3600; minute = (epoch % 3600) / 60; second = epoch % 60; rtc.setTime(hour , minute, second); } // wait ten seconds before asking for the time again WiFi.disconnect(); // отключаемся от сети } // send an NTP request to the time server at the given address unsigned long sendNTPpacket(IPAddress& address) { // Serial.println("sending NTP packet..."); // 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(); } void flip(){ point = !point; }