1 files changed, 90 insertions, 0 deletions
diff --git a/src/main.cpp b/src/main.cpp
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--- /dev/null
+++ b/src/main.cpp
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+#include <Arduino.h>
+
+#include <Wire.h>
+#include <Timezone.h>   // https://github.com/JChristensen/Timezone
+#include <TimeLib.h>    // https://github.com/PaulStoffregen/Time
+#include <DS1307RTC.h>  // https://github.com/PaulStoffregen/DS1307RTC
+#include <NTPClient.h>  // https://github.com/arduino-libraries/NTPClient
+#include <TM1637Display.h> // https://github.com/avishorp/TM1637
+#include <WiFiManager.h>//https://github.com/tzapu/WiFiManager
+
+#include <ESP8266WiFi.h>
+#include <ESP8266WiFiMulti.h>
+#include <WiFiUdp.h>
+#include <ArduinoOTA.h>
+
+// Central European Time (Frankfurt, Paris)
+TimeChangeRule CEST = {"CEST", Last, Sun, Mar, 2, 120};     // Central European Summer Time
+TimeChangeRule CET = {"CET ", Last, Sun, Oct, 3, 60};       // Central European Standard Time
+Timezone CE(CEST, CET);
+
+// NTP
+WiFiUDP ntpUDP;
+NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 0, 600000);
+
+// timelib
+time_t utc;
+time_t local;
+
+// display
+//TM1637Display display(1, 3);
+TM1637Display display(D8, D7); // pinClk, pinDIO
+
+uint8_t data[] = { 0xff, 0xff, 0xff, 0xff };
+uint8_t blank[] = { 0x00, 0x00, 0x00, 0x00 };
+
+char buf[4];
+char prev[4];
+
+void setup() {
+  WiFi.mode(WIFI_STA);
+
+  WiFiManager wifiManager;
+  wifiManager.setTimeout(600);
+
+  if(!wifiManager.autoConnect("clock")) {
+    ESP.reset();
+  }
+
+  ArduinoOTA.begin();
+  ESP.wdtEnable(WDTO_8S);
+
+  // put your setup code here, to run once:
+  //Wire.begin(0,2); // 00-sda,02-sdl 
+  Wire.begin(D2,D1);
+  timeClient.begin();
+  setSyncProvider(RTC.get);
+  display.clear();
+}
+
+void loop() {
+  ESP.wdtFeed();
+  ArduinoOTA.handle();
+
+  yield();
+
+  // put your main code here, to run repeatedly:
+  if(timeClient.update()) {
+    RTC.set(timeClient.getEpochTime());
+  }
+
+  yield();
+
+  utc = now();
+  local = CE.toLocal(utc);
+
+  yield();
+
+  sprintf(buf, "%.2d%.2d",hour(local), minute(local));
+  data[0] = display.encodeDigit(buf[0] - '0');
+  data[1] = display.encodeDigit(buf[1] - '0');
+  data[2] = display.encodeDigit(buf[2] - '0');
+  data[3] = display.encodeDigit(buf[3] - '0');
+
+  if(strcmp(buf, prev) != 0) {
+    display.setSegments(data);
+    strcpy(prev , buf);
+  }
+
+  yield();
+}