Code:
/* Beispiel
* "WLAN CLient mit OLED/Seriell Ausgabe"
* Ref.: http://www.instructables.com/id/Quick-Start-to-Nodemcu-ESP8266-on-Arduino-IDE/
*
*/
#include <SSD1306.h>
// Initialisiert das OLED Display
SSD1306 display(0x3c, D4, D5);
#include <ESP8266WiFi.h>
// WLAN Router
const char* ssid = "WLANssid";
const char* password = "WLANpassword";
IPAddress ip(192,168,2,117); //Feste IP des neuen Servers, frei wählbar
IPAddress gateway(192,168,2,1); //Gatway (IP Router eintragen)
IPAddress subnet(255,255,255,0); //Subnet Maske eintragen
WiFiServer server(80);
#include <TimeLib.h>
time_t prevDisplay = 0;
String timestr = "00:00:00" ;
String datestr = "01.01.1990";
// NTP Servers:
IPAddress timeServer(132, 163, 4, 101); // time-a.timefreq.bldrdoc.gov
// IPAddress timeServer(132, 163, 4, 102); // time-b.timefreq.bldrdoc.gov
// IPAddress timeServer(132, 163, 4, 103); // time-c.timefreq.bldrdoc.gov
const int timeZone = 0; // auto mode vian utp (CEST)
//const int timeZone = 1; // Central European Time
//const int timeZone = -5; // Eastern Standard Time (USA)
//const int timeZone = -4; // Eastern Daylight Time (USA)
//const int timeZone = -8; // Pacific Standard Time (USA)
//const int timeZone = -7; // Pacific Daylight Time (USA)
#include <WiFiUdp.h>
#include <Timezone.h>
WiFiUDP Udp;
unsigned int localPort = 8888; // local port to listen for UDP packets
//Timezone
//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);
TimeChangeRule *tcr; //pointer to the time change rule, use to get the TZ abbrev
time_t utc, local;
#include <DHT.h>
//Definitionen fuer DHT11
#define DHT_TYPE DHT11 // Sensortyp definieren DHT11
const int DHT_PIN = D2; // Datenleitung des Sensors an GPIO4=D2 des iot Bricks <<<< GEÄNDERT !!! <<<<
char tempc[20];
char humid[20];
DHT dht(DHT_PIN, DHT_TYPE); // Variable vom Typ DHT definieren
int led7 = D7; // GPIO13=D7
int led8 = D8; // GPIO15=D8
void dashboard(int mode) {
if(mode==1) {
display.clear();
String cx_oled = "WiFi connected: " + (String)WiFi.RSSI() + " dBm";
display.drawString( 0, 0, cx_oled );
String gw_oled= "Gateway: " + (String)WiFi.gatewayIP()[0] + "." + (String)WiFi.gatewayIP()[1]
+ "." + (String)WiFi.gatewayIP()[2] + "." + (String)WiFi.gatewayIP()[3];
display.drawString(0,10, gw_oled);
// Print the IP address
String lip_oled = "Svr: http://" + (String)WiFi.localIP()[0] + "." + (String)WiFi.localIP()[1]
+ "." + (String)WiFi.localIP()[2] + "." + (String)WiFi.localIP()[3] + "/";
display.drawString( 0,20, lip_oled);
display.drawString( 0,40, timestr+" "+datestr);
display.drawString( 0,50, tempc); display.drawString(50,50, "Feuchte: "+(String)humid);
display.display();
}
}
void setup() {
int progress = 0;
Serial.begin(115200);
delay(10);
display.init();
if (digitalRead(D0)==LOW) { display.flipScreenVertically(); }
display.setFont(ArialMT_Plain_10);
display.setTextAlignment(TEXT_ALIGN_LEFT);
display.clear();
display.drawString(0, 0, "OLED TEST OK");
display.display();
pinMode(D0, INPUT_PULLUP);
pinMode(D1, INPUT_PULLUP);
pinMode(D3, INPUT_PULLUP);
pinMode(led7, OUTPUT);
digitalWrite(led7, LOW);
pinMode(led8, OUTPUT);
digitalWrite(led8, LOW);
// Connect to WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
WiFi.config(ip, gateway, subnet); // feste IP
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
display.clear();
display.drawString(5, 20, "WiFi connecting...");
display.drawProgressBar(0, 32, 120, 10, progress);
display.display();
progress+=2;
}
display.drawString(5, 20, "WiFi connecting...");
display.drawProgressBar(0, 32, 120, 10, 100);
display.display();
delay(500);
Serial.println("");
Serial.print("WiFi connected: ");
Serial.println(WiFi.gatewayIP());
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.print("Use this URL to connect: ");
Serial.print("http://");
Serial.print(WiFi.localIP());
Serial.println("/");
// Start UDP
Serial.println("Starting UDP");
Udp.begin(localPort);
Serial.print("Local port: ");
Serial.println(Udp.localPort());
Serial.println("waiting for sync");
setSyncProvider(getNtpTime);
dashboard(1);
}
void loop() {
static unsigned long tms=0, tndp=0;
volatile static int valD7=-1, valD8=-1;
// OLED update WiFi signal
if ( millis() - tms > 1000 ) {
tms=millis();
float t = dht.readTemperature(); //Temperatur auslesen (Celsius)
delay(1);
if (not(isnan(t)))
{
sprintDouble(tempc,t,2); //Temperatur mit 2 Nachkommastellen in String konvertieren
strcat(tempc," °C"); //String mit °C ergänzen
}
else
{
Serial.print("No Temperature Sensor. ");
}
delay(1);
float h = dht.readHumidity(); //Feuchtigkeit auslesen (Prozent)
delay(1);
if (not(isnan(h)))
{
sprintDouble(humid,h,0); //Feuchtigkeit ohne Nachkommastelle in String konvertieren
strcat(humid," %"); //String mit %-Zeichen ergänzen
}
else
{
Serial.print("No Humidity Sensor. ");
}
Serial.println(tempc);
Serial.println(humid);
if ( millis() - tndp > 10000 ) {
if (timeStatus() != timeNotSet) {
local = CE.toLocal(now(), &tcr);
if (now() != prevDisplay) { //update the display only if time has changed
prevDisplay = now();
digitalClockDisplay();
}
}
}
Serial.println(timestr+" "+datestr);
dashboard(1);
}
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Read the first line of the request
String request = client.readStringUntil('\r');
Serial.println(request);
client.flush();
// Match the request
//valD7=LOW;
if (request.indexOf("/LED7=ON") != -1) {
digitalWrite(led7, HIGH);
valD7 = HIGH;
}
if (request.indexOf("/LED7=OFF") != -1) {
digitalWrite(led7, LOW);
valD7 = LOW;
}
//valD8=LOW;
if (request.indexOf("/LED8=ON") != -1) {
digitalWrite(led8, HIGH);
valD8 = HIGH;
}
if (request.indexOf("/LED8=OFF") != -1) {
digitalWrite(led8, LOW);
valD8 = LOW;
}
// Return the response
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println(""); // do not forget this one
client.println("<!DOCTYPE HTML>");
client.println("<html>");
client.println("<head>");
// autom. Aktualisierung alle 30 sec.
client.println("<meta http-equiv=\"refresh\" content=\"30; URL=http://192.168.2.117\">");
// utf-8 für "°" Zeichen
client.println("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">");
client.println("<title>Haus-Ueberwachung</title>");
client.println("</head>");
client.println("<body>");
client.println("<h1> HaWe Haus-Ueberwachung </h1>");
client.println("<h2>"+timestr+" "+datestr+"</h2>");
client.println("<br><br>");
client.print("Led D7 is now: ");
if(valD7 == HIGH) { client.print("On "); }
else { client.print("Off "); }
client.println("<a href=\" /LED7=ON\"\"><button>Turn On </button></a>");
client.println("<a href=\" /LED7=OFF\"\"><button>Turn Off </button></a><br />");
client.println("<br><br>");
client.print("Led D8 is now: ");
if(valD8 == HIGH) { client.print("On "); }
else { client.print("Off "); }
client.println("<a href=\" /LED8=ON\"\"><button>Turn On </button></a>");
client.println("<a href=\" /LED8=OFF\"\"><button>Turn Off </button></a><br />");
client.println("<br><br>");
client.println("<h2>Temperat.: "+(String)tempc+"</h2>");
client.println("<h2>Feuchtigk.: "+(String)humid+"</h2>");
client.println("<body>");
client.println("</html>");
delay(1);
Serial.println("Client disonnected");
Serial.println("");
}
void sprintDouble( char *str, double val, byte precision)
{
char st2[16];
unsigned long frac;
unsigned long mult = 1;
int mant= int(val);
byte padding = precision -1;
byte sgn=0;
sprintf(str,"");
if (val < 0) sprintf(str,"-");
mant=abs(mant);
sprintf(st2,"%d",mant); //prints the int part
strcat(str,st2);
if( precision > 0) {
strcat(str,".");
while(precision--)
mult *=10;
if (val >= 0)
frac = (val - int(val)) * mult;
else
frac = (int(val)- val ) * mult;
unsigned long frac1 = frac;
int cnt=precision;
// while( frac1 /= 10 )
while( frac1 = frac1 / 10 & cnt-- )
padding--;
while( padding--) strcat(str,"0");
sprintf(st2,"%ld",frac);
strcat(str,st2);
}
}
void digitalClockDisplay(){
char buf[10];
// digital clock display of the time
timestr ="";
sprintf(buf, "%02d:", (int)hour(local));
timestr+=buf;
//Serial.print(hour());
sprintf(buf, "%02d:", (int)minute(local));
timestr+=buf;
//printDigits(minute());
//Serial.print(minute());
sprintf(buf, "%02d", (int)minute(local));
//printDigits(second());
sprintf(buf, "%02d", (int)second(local));
timestr+=buf;
//Serial.println(timestr);
datestr="";
sprintf(buf, "%02d.", (int)day(local));
datestr+=buf;
//Serial.print(day());
//Serial.print(".");
sprintf(buf, "%02d.", (int)month(local));
datestr+=buf;
//Serial.print(month());
//Serial.print(".");
sprintf(buf, "%4d", (int)year(local));
datestr+=buf;
//Serial.print(year());
//Serial.println();
//Serial.println(timestr+" "+datestr);
//Serial.println();
}
/*-------- NTP code ----------*/
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()
{
while (Udp.parsePacket() > 0) ; // discard any previously received packets
Serial.println("Transmit NTP Request");
sendNTPpacket(timeServer);
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];
utc = secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR; // timezone=0 for auto sync (CEST)
return utc;
}
}
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();
}
Code:
// NTP Servers:
IPAddress timeServer(132, 163, 4, 101); // time-a.timefreq.bldrdoc.gov
// IPAddress timeServer(132, 163, 4, 102); // time-b.timefreq.bldrdoc.gov
// IPAddress timeServer(132, 163, 4, 103); // time-c.timefreq.bldrdoc.gov
const int timeZone = 0; // auto mode (CEST)
//const int timeZone = 1; // Central European Time
//const int timeZone = -5; // Eastern Standard Time (USA)
//const int timeZone = -4; // Eastern Daylight Time (USA)
//const int timeZone = -8; // Pacific Standard Time (USA)
//const int timeZone = -7; // Pacific Daylight Time (USA)
#include <WiFiUdp.h>
#include <Timezone.h>
WiFiUDP Udp;
unsigned int localPort = 8888; // local port to listen for UDP packets
//Timezone
//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);
TimeChangeRule *tcr; //pointer to the time change rule, use to get the TZ abbrev
time_t utc, local;
/*-------- NTP code ----------*/
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()
{
while (Udp.parsePacket() > 0) ; // discard any previously received packets
Serial.println("Transmit NTP Request");
sendNTPpacket(timeServer);
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];
utc = secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR; // timezone=0 for auto sync (CEST)
return utc;
}
}
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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