Added ESP8266 real time clock example

mSalwans · Feb 1, 2015 · 1ef8ce1 · 1ef8ce1
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diff --git a/Esp8266EasyIoT/examples/esp8266_time/esp8266_time.ino b/Esp8266EasyIoT/examples/esp8266_time/esp8266_time.ino
@@ -0,0 +1,144 @@
+ /*
+ V1.0 - first version
+ 
+ Created by Igor Jarc <[email protected]>
+ See http://iot-playground.com for details
+ 
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ version 2 as published by the Free Software Foundation.
+ */
+#include <UTFT.h>
+#include <UTouch.h>
+#include <Time.h>
+#include <Esp8266EasyIoT.h>
+#include <Timezone.h>
+#include <DS1302RTC.h>
+
+#include <SevenSegNumFontPlus.h>
+extern uint8_t SevenSegNumFontPlus[];
+
+
+#define ESP_RESET_PIN     12
+
+// Set the pins to the correct ones for your development shield
+// ------------------------------------------------------------
+// Arduino Uno / 2009:
+// -------------------
+// Standard Arduino Uno/2009 shield            : <display model>,A5,A4,A3,A2
+// DisplayModule Arduino Uno TFT shield        : <display model>,A5,A4,A3,A2
+//
+// Arduino Mega:
+// -------------------
+// Standard Arduino Mega/Due shield            : <display model>,38,39,40,41
+// CTE TFT LCD/SD Shield for Arduino Mega      : <display model>,38,39,40,41
+//
+// Remember to change the model parameter to suit your display module!
+UTFT myGLCD(ITDB32S,38,39,40,41);
+
+// Set pins:  CE, IO,CLK
+DS1302RTC RTC(11, 10, 9);
+
+
+// change if you are not in CET
+//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 tzc(CEST, CET);
+
+
+Esp8266EasyIoT esp; 
+
+boolean timeReceived = false;
+
+void setup()
+{  
+  // init LSCD
+  myGLCD.InitLCD();
+  myGLCD.clrScr();
+
+
+  // ESP serial
+  Serial1.begin(9600);
+  // debug serial
+  Serial.begin(115200);
+
+  // init ESP
+  esp.begin(NULL, ESP_RESET_PIN, &Serial1, &Serial);
+  esp.present(0, S_DIGITAL_INPUT);
+
+  setSyncProvider(RTC.get);
+  Serial.println("requesting time");
+  esp.requestTime(receiveTime);    
+
+  displayTime();
+}
+
+
+void loop()
+{
+  esp.process();
+
+  unsigned long now = millis();
+  static unsigned long lastRequest;
+   // If no time has been received yet, request it every 10 second from controller
+  // When time has been received, request update every hour
+  if ((!timeReceived && now-lastRequest > 10*1000)
+    || (timeReceived && now-lastRequest > 60*1000*60)) {
+    // Request time from controller. 
+    Serial.println("requesting time");
+    esp.requestTime(receiveTime);  
+    lastRequest = now;
+  }
+
+  displayTime();
+}
+
+// This is called when a new time value was received
+void receiveTime(unsigned long controllerTime) {
+  // Ok, set incoming time 
+  Serial.print("Time value received: ");
+  Serial.println(controllerTime);
+  RTC.set(controllerTime); // this sets the RTC to the time from controller - which we do want periodically
+  timeReceived = true;
+}
+
+
+void displayTime()
+{
+  char Dbuf1[60];	// all the rest for building messages with sprintf
+  char Dbuf[60];
+
+  time_t t = timelocal(now());
+  static time_t tLast;
+
+  if (tLast != t)
+  {
+    tLast = t;
+    myGLCD.setColor(0, 255, 0);
+    myGLCD.setBackColor(0, 0, 0);
+
+    myGLCD.setFont(SevenSegNumFontPlus);  
+
+    strcpy_P(Dbuf1,PSTR("%02d:%02d"));
+    sprintf(Dbuf, Dbuf1, hour(t), minute(t)); 
+
+    myGLCD.print(Dbuf, 0, 0);
+  }
+}
+
+
+time_t timelocal(time_t utctime) {
+  time_t rt;
+  rt = tzc.toLocal(utctime);
+  //if(year(rt) < 2036) {
+  return(rt);
+  //    }
+  //    else {
+  //	return(RTC.get());
+  //    }
+}
+
+