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// I'm not sure where the original program was from.
// maybe here - https://jmloureiro77.blogspot.ca/2017/04/esp8266-rtc-ds3231.html
// https://github.com/Makuna/Rtc RTC library
// https://github.com/agnunez/ESP8266-I2C-LCD1602 I2C LCD library
// CONNECTIONS:
// DS3231 SDA --> SDA=============nodemcu D1
// DS3231 SCL --> SCL=============nodemcu D2
// DS3231 VCC --> 3.3v or 5v
// DS3231 GND --> GND
#include <ESP8266WiFi.h>
//#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <ESP8266HTTPUpdateServer.h>
#include <Wire.h> // must be included here so that Arduino library object file references work
#include <RtcDS3231.h>
RtcDS3231<TwoWire> Rtc(Wire);
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4); //I2C address, columns, lines
const int ledPin = 15; // the number of the LED pin
// Variables will change:
int ledState = LOW; // ledState used to set the LED
const char* host = "esp8266";
const char* ssid = "2WIRE865";
const char* password = "xxxxxxxxxxxxxxx";
// Generally, you should use "unsigned long" for variables that hold time
// The value will quickly become too large for an int to store
unsigned long previousMillis = 0; // will store last time LED was updated
// constants won't change:
const long interval = 1000; // interval at which to blink (milliseconds)
char datestring[20];
String message, javaScript, XML;
ESP8266WebServer httpServer(80);
ESP8266HTTPUpdateServer httpUpdater;
RtcDateTime now;
//=============================================================================================
void buildJavascript() {
//=============================================================================================
javaScript = "<SCRIPT>\n";
javaScript += "var xmlHttp=createXmlHttpObject();\n";
javaScript += "function createXmlHttpObject(){\n";
javaScript += " if(window.XMLHttpRequest){\n";
javaScript += " xmlHttp=new XMLHttpRequest();\n";
javaScript += " }else{\n";
javaScript += " xmlHttp=new ActiveXObject('Microsoft.XMLHTTP');\n"; // code for IE6, IE5
javaScript += " }\n";
javaScript += " return xmlHttp;\n";
javaScript += "}\n";
javaScript += "function process(){\n";
javaScript += " if(xmlHttp.readyState==0 || xmlHttp.readyState==4){\n";
javaScript += " xmlHttp.open('PUT','xml',true);\n";
javaScript += " xmlHttp.onreadystatechange=handleServerResponse;\n"; // no brackets?????
javaScript += " xmlHttp.send(null);\n";
javaScript += " }\n";
javaScript += " setTimeout('process()',1000);\n";
javaScript += "}\n";
javaScript += "function handleServerResponse(){\n";
javaScript += " if(xmlHttp.readyState==4 && xmlHttp.status==200){\n";
javaScript += " xmlResponse=xmlHttp.responseXML;\n";
javaScript += " xmldoc = xmlResponse.getElementsByTagName('rYear');\n";
javaScript += " message = xmldoc[0].firstChild.nodeValue;\n";
javaScript += " document.getElementById('year').innerHTML=message;\n";
javaScript += " xmldoc = xmlResponse.getElementsByTagName('rMonth');\n";
javaScript += " message = xmldoc[0].firstChild.nodeValue;\n";
javaScript += " document.getElementById('month').innerHTML=message;\n";
javaScript += " xmldoc = xmlResponse.getElementsByTagName('rDay');\n";
javaScript += " message = xmldoc[0].firstChild.nodeValue;\n";
javaScript += " document.getElementById('day').innerHTML=message;\n";
javaScript += " xmldoc = xmlResponse.getElementsByTagName('rHour');\n";
javaScript += " message = xmldoc[0].firstChild.nodeValue;\n";
javaScript += " document.getElementById('hour').innerHTML=message;\n";
javaScript += " xmldoc = xmlResponse.getElementsByTagName('rMinute');\n";
javaScript += " message = xmldoc[0].firstChild.nodeValue;\n";
javaScript += " document.getElementById('minute').innerHTML=message;\n";
javaScript += " xmldoc = xmlResponse.getElementsByTagName('rSecond');\n";
javaScript += " message = xmldoc[0].firstChild.nodeValue;\n";
javaScript += " document.getElementById('second').innerHTML=message;\n";
javaScript += " xmldoc = xmlResponse.getElementsByTagName('rTemp');\n";
javaScript += " message = xmldoc[0].firstChild.nodeValue;\n";
javaScript += " document.getElementById('temp').innerHTML=message;\n";
javaScript += " }\n";
javaScript += "}\n";
javaScript += "</SCRIPT>\n";
}
//=============================================================================================
void buildXML() {
//=============================================================================================
RtcDateTime now = Rtc.GetDateTime();
RtcTemperature temp = Rtc.GetTemperature();
XML = "<?xml version='1.0'?>";
XML += "<t>";
XML += "<rYear>";
XML += now.Year();
XML += "</rYear>";
XML += "<rMonth>";
XML += now.Month();
XML += "</rMonth>";
XML += "<rDay>";
XML += now.Day();
XML += "</rDay>";
XML += "<rHour>";
if (now.Hour() < 10) {
XML += "0";
XML += now.Hour();
} else {
XML += now.Hour();
}
XML += "</rHour>";
XML += "<rMinute>";
if (now.Minute() < 10) {
XML += "0";
XML += now.Minute();
} else {
XML += now.Minute();
}
XML += "</rMinute>";
XML += "<rSecond>";
if (now.Second() < 10) {
XML += "0";
XML += now.Second();
} else {
XML += now.Second();
}
XML += "</rSecond>";
XML += "<rTemp>";
XML += temp.AsFloat();
XML += "</rTemp>";
XML += "</t>";
}
//=============================================================================================
void handleRoot() {
//=============================================================================================
buildJavascript();
IPAddress ip = WiFi.localIP();
String ipStr = (String(ip[0]) + '.' + String(ip[1]) + '.' + String(ip[2]) + '.' + String(ip[3]));
// message="<!DOCTYPE HTML>\n";
message = "<html>";
// message = "<html><head><meta http-equiv='refresh' content='5'/>";
message = "<head>";
message = javaScript;
message += "<title>ESP8266 Demo</title>";
message += "<style> body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }";
message += "h1 {text-align:center;}";
message += "h2 {text-align:center;}";
message += "p {text-align:center;}";
message += "table.center { width:80%; margin-left:10%; margin-right:10%;}";
message += "</style>";
message += " </head>";
message += " <body onload='process()'>";
message += "<table class='center'>";
message += " <tr>";
message += " <th>";
message += "<h1>Fecha y Hora</h1>";
message += " </th> ";
message += " </tr>";
message += " <tr>";
message += " <td align='center'>";
message += " </td>";
message += " </tr>";
message += " <tr>";
message += " <td align='center'>";
message += "<A id='year'></A>/<A id='month'></A>/<A id='day'></A> <A id='hour'></A>:<A id='minute'></A>:<A id='second'></A><BR>";
message += " </td>";
message += " </tr>";
message += " <tr>";
message += " <td align='center'>";
message += "Temp =<A id='temp'></A>C<BR>";
message += " </td>";
message += " </tr>";
message += " <tr>";
message += " <td>";
message += "<H2><a href='/setTime'>Cambiar fecha y hora</a></H2>";
message += " </td>";
message += " </tr>";
message += " <tr>";
message += " <td align='center'>";
message += "<BR>IP ";
message += ipStr;
message += " </td>";
message += " </tr>";
message += "</table>";
message += "<BR>";
message += "";
message += "</body></html>";
httpServer.send ( 404 , "text/html", message );
}
//=============================================================================================
void setTime() {
//=============================================================================================
buildJavascript();
// message="<!DOCTYPE HTML>\n";
message = "<html>";
// message = "<html><head><meta http-equiv='refresh' content='5'/>";
message = "<head>";
message = javaScript;
message += "<title>ESP8266 set time</title>";
message += "<style> body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }";
message += "h1 {text-align:center;}";
message += "h2 {text-align:center;}";
message += "p {text-align:center;}";
message += "table.center { width:80%; margin-left:10%; margin-right:10%;}";
message += "</style>";
message += " </head>";
message += " <body onload='process()'>";/////////////////////////////////////////
message += "";
message += "<table class='center'>";
message += " <tr>";
message += " <th>";
message += "<h1>Cambiar fecha y hora</h1>";
message += " </th> ";
message += " </tr>";
message += " <tr>";
message += " <td align='center'>";
message += "Fecha Atual ";
message += " <BR> </td>";
message += " </tr>";
message += " <tr>";
message += " <td align='center'>";
message += "<A id='year'></A>/<A id='month'></A>/<A id='day'></A><BR>";
message += " </td>";
message += " </tr>";
message += " <tr>";
message += " <td align='center'>";
message += "<form >";
message += "Pon fecha posterior a 2017-03-20<br><br>";
message += "<input type='date' name='date' min='2017-03-20' style='height:75px; width:200px'><br><br>";
message += "<input type='submit' value='Actualizar Fecha' style='height:75px; width:200px'> ";
message += "</form>";
message += " </td>";
message += " </tr>";
message += " <tr>";
message += " <td align='center'>";
message += "Hora Actal<BR><A id='hour'></A>:<A id='minute'></A>:<A id='second'></A><BR><BR>";
message += " </td>";
message += " </tr>";
message += " <tr>";
message += " <td align='center'>";
message += "<form >";
message += "Nueva hora<br>";
message += "<input type='TIME' name='time' style='height:75px; width:200px'><br><br>";
message += "<input type='submit' value='Actualizar Hora' style='height:75px; width:200px'> ";
message += "</form>";
message += " </td>";
message += " </tr>";
message += " <tr>";
message += " <td>";
message += "<H2><a href='/'>ATRAS</a></H2>";
message += " </td>";
message += " </tr>";
message += "</table>";
message += "";
message += "</body></html>";
httpServer.send ( 404 , "text/html", message );
// Fecha--------------------------------------------------------------------
if (httpServer.hasArg("date")) {
uint16_t ano;
uint8_t mes;
uint8_t dia;
Serial.print("ARGdate");
Serial.println(httpServer.arg("date"));
String sd = httpServer.arg("date");
String lastSd;
// int someInt = someChar - '0';
ano = ((sd[0] - '0') * 1000) + ((sd[1] - '0') * 100) + ((sd[2] - '0') * 10) + (sd[3] - '0');
mes = ((sd[5] - '0') * 10) + (sd[6] - '0');
dia = ((sd[8] - '0') * 10) + (sd[9] - '0');
if (sd != lastSd) {
RtcDateTime now = Rtc.GetDateTime();
uint8_t hour = now.Hour();
uint8_t minute = now.Minute();
Rtc.SetDateTime(RtcDateTime(ano, mes, dia, hour, minute, 0));
lastSd = sd;
}
// Serial.println(fa);
httpServer.send ( 404 , "text", message );
}//if has date
// Hora ------------------------------------------------
if (httpServer.hasArg("time")) {
Serial.println(httpServer.arg("time"));
String st = httpServer.arg("time");
String lastSt;
// Serial.print("st ");
// Serial.println(st);
//int someInt = someChar - '0';
uint8_t hora = ((st[0] - '0') * 10) + (st[1] - '0');
uint8_t minuto = ((st[3] - '0') * 10) + (st[4] - '0');
if (st != lastSt) {
RtcDateTime now = Rtc.GetDateTime();
uint16_t year = now.Year();
uint8_t month = now.Month();
uint8_t day = now.Day();
Rtc.SetDateTime(RtcDateTime(year, month, day, hora, minuto, 0));
lastSt = st;
}
httpServer.send ( 404 , "text", message );
}//if has time
}
//=============================================================================================
void handleXML() {
//=============================================================================================
buildXML();
httpServer.send(200, "text/xml", XML);
}
//=============================================================================================
void handleNotFound() {
//=============================================================================================
String message = "<html><head>";
message += "<title>ESP8266 Not Found</title>";
message += "<style> body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }";
message += "h1 {text-align:center;}";
message += "h2 {text-align:center;}";
message += "</style>";
message += " </head>";
message += " <body>";
message += "<table style='width:80%'>";
message += "<tr>";//fila
message += "<th>";//columna encavezado
message += "<h1>Not Found</h1>";
message += "</th>";
message += "<tr>";//fila 2
message += "<td>";//columna normal
message += "<H2><a href='/'>Back</a></H2>";
message += "<td>";
message += "</tr>";
message += "</table>";
message += "</body></html>";
message += "";
httpServer.send ( 404 , "text", message );
}
//=============================================================================================
void setup(void) {
//=============================================================================================
pinMode(ledPin, OUTPUT);
Serial.begin(115200);
Serial.println();
Serial.println("Booting Sketch...ESP_RTC3231.ino");
lcd.begin(0, 2); // In ESP8266-01, SDA=0, SCL=2
lcd.clear();
lcd.setCursor(0, 3); // column 0, row 0
lcd.print("lcd setup");
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.waitForConnectResult() != WL_CONNECTED) {
WiFi.begin(ssid, password);
Serial.println("WiFi failed, retrying.");
}
if ( MDNS.begin ( "host" ) ) {
Serial.println ( "MDNS responder started" );
}
//MDNS.begin(host);
httpUpdater.setup(&httpServer);
httpServer.on ( "/", handleRoot );
httpServer.on ( "/setTime", setTime );
httpServer.on ( "/xml", handleXML) ;
httpServer.onNotFound ( handleNotFound );
Serial.println ( "HTTP server started" );
httpServer.begin();
MDNS.addService("http", "tcp", 80);
Serial.printf("HTTPUpdateServer ready!\n Open http://%s.local/update in your browser\n", host);
Serial.println(WiFi.localIP());
Serial.println("-----------------------");
// RTC ---------------------------------------------------------------------------------------
Rtc.Begin();
// if you are using ESP-01 then uncomment the line below to reset the pins to
// the available pins for SDA, SCL
Wire.begin(0, 2); // due to limited pins, use pin 0 and 2 for SDA, SCL
// RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__);
if (!Rtc.GetIsRunning()) {
// Serial.println("RTC was not actively running, starting now");
Rtc.SetIsRunning(true);
}
//RtcDateTime now = Rtc.GetDateTime();
// never assume the Rtc was last configured by you, so
// just clear them to your needed state
Rtc.Enable32kHzPin(false);
Rtc.SetSquareWavePin(DS3231SquareWavePin_ModeNone);
lcd.setCursor(0, 3); // column 0, row 0
lcd.print(" ");
}
//=============================================================================================
void loop(void) {
//=============================================================================================
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
// save the last time you blinked the LED
previousMillis = currentMillis;
// if the LED is off turn it on and vice-versa:
if (ledState == LOW) {
ledState = HIGH;
} else {
ledState = LOW;
}
// set the LED with the ledState of the variable:
digitalWrite(ledPin, ledState);
// RTC ---------------------------------------------------------------------------------------
RtcDateTime now = Rtc.GetDateTime();
printDateTime(now);
Serial.println();
RtcTemperature temp = Rtc.GetTemperature();
Serial.print(temp.AsFloat());
Serial.println("C");
/*
lcd.setCursor(0, 0); // column 0, row 0
lcd.println(dt.Hour());
lcd.println(":");
lcd.println(dt.Minute());
lcd.println(":");
lcd.println(dt.Second());
*/
}
httpServer.handleClient();
}
//=======================================================
#define countof(a) (sizeof(a) / sizeof(a[0]))
void printDateTime(const RtcDateTime& dt)
{
char datestring[20];
snprintf_P(datestring,
countof(datestring),
PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
dt.Month(),
dt.Day(),
dt.Year(),
dt.Hour(),
dt.Minute(),
dt.Second() );
Serial.print(datestring);
lcd.setCursor(0, 0); // column 0, row 0
lcd.print(datestring);
lcd.print(" ");
}
//----------------------------------------------------------
// Rtc_by_Makuna library
// CONNECTIONS:
// DS3231 SDA --> SDA
// DS3231 SCL --> SCL
// DS3231 VCC --> 3.3v or 5v
// DS3231 GND --> GND
#if defined(ESP8266)
#include <pgmspace.h>
#else
#include <avr/pgmspace.h>
#endif
#include <Wire.h> // must be included here so that Arduino library object file references work
#include <RtcDS3231.h>
RtcDS3231<TwoWire> Rtc(Wire);
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4); // Check I2C address of LCD, normally 0x27 or 0x3F
void setup ()
{
Serial.begin(115200);
Serial.print("compiled: ");
Serial.print(__DATE__);
Serial.println(__TIME__);
lcd.begin(0,2); // In ESP8266-01, SDA=0, SCL=2
lcd.backlight();
lcd.home(); // At column=0, row=0
lcd.print("Starting");
// lcd.setCursor(0, 1);
//--------RTC SETUP ------------
Rtc.Begin();
// if you are using ESP-01 then uncomment the line below to reset the pins to
// the available pins for SDA, SCL
Wire.begin(0, 2); // due to limited pins, use pin 0 and 2 for SDA, SCL
RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__);
printDateTime(compiled);
Serial.println();
if (!Rtc.IsDateTimeValid())
{
// Common Cuases:
// 1) first time you ran and the device wasn't running yet
// 2) the battery on the device is low or even missing
Serial.println("RTC lost confidence in the DateTime!");
// following line sets the RTC to the date & time this sketch was compiled
// it will also reset the valid flag internally unless the Rtc device is
// having an issue
Rtc.SetDateTime(compiled);
}
if (!Rtc.GetIsRunning())
{
Serial.println("RTC was not actively running, starting now");
Rtc.SetIsRunning(true);
}
RtcDateTime now = Rtc.GetDateTime();
if (now < compiled)
{
Serial.println("RTC is older than compile time! (Updating DateTime)");
Rtc.SetDateTime(compiled);
}
else if (now > compiled)
{
Serial.println("RTC is newer than compile time. (this is expected)");
}
else if (now == compiled)
{
Serial.println("RTC is the same as compile time! (not expected but all is fine)");
}
// never assume the Rtc was last configured by you, so
// just clear them to your needed state
Rtc.Enable32kHzPin(false);
Rtc.SetSquareWavePin(DS3231SquareWavePin_ModeNone);
}
//===================================================
void loop ()
{
if (!Rtc.IsDateTimeValid())
{
// Common Cuases:
// 1) the battery on the device is low or even missing and the power line was disconnected
Serial.println("RTC lost confidence in the DateTime!");
}
RtcDateTime now = Rtc.GetDateTime();
printDateTime(now);
Serial.println();
RtcTemperature temp = Rtc.GetTemperature();
Serial.print(temp.AsFloat());
Serial.println("C");
LCDprintDateTime(now);
lcd.setCursor(0, 2);
lcd.print(" ");
lcd.print(temp.AsFloat());
lcd.print("C");
delay(1000); // one seconds
}
//====================================================
#define countof(a) (sizeof(a) / sizeof(a[0]))
void printDateTime(const RtcDateTime& dt)
{
char datestring[20];
snprintf_P(datestring,
countof(datestring),
PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
dt.Month(),
dt.Day(),
dt.Year(),
dt.Hour(),
dt.Minute(),
dt.Second() );
Serial.print(datestring);
}
//-----------------------------------------------------------
void LCDprintDateTime(const RtcDateTime& dt)
{
char datestring[20];
snprintf_P(datestring,
countof(datestring),
PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
dt.Month(),
dt.Day(),
dt.Year(),
dt.Hour(),
dt.Minute(),
dt.Second() );
lcd.setCursor(0, 1);
lcd.print(datestring);
}
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