117 lines
3.4 KiB
Arduino
117 lines
3.4 KiB
Arduino
/*
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* Freezer Reed Contact Door Sensor
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* by Tilman Liero
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* www.tilman.de
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*
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* on = door open
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* off = door closed
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*
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* Sources:
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* WEMOS D1 WiFi setup: https://averagemaker.com/2018/04/how-to-set-up-wifi-on-a-wemos.html
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* ESP8266 web server: https://randomnerdtutorials.com/esp8266-web-server/
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* Digital Input Pull-Up Resistor: https://docs.arduino.cc/tutorials/generic/digital-input-pullup/
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*/
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#include <ESP8266WiFi.h>
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//#include <ESP8266HTTPClient.h>
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//#include <WiFiClient.h>
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const char* ssid = "LeWe";
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const char* password = "5275274365464843";
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WiFiServer server(8081);
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String header;
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void setup()
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{
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pinMode(LED_BUILTIN, OUTPUT);
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Serial.println("Reed switch on D2");
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pinMode(D2, INPUT_PULLUP);
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// start serial output
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Serial.begin(115200);
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Serial.println();
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Serial.print("Connecting to ");
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Serial.println(ssid);
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WiFi.hostname("Freezer-Sensor");
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println("");
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Serial.print("WiFi connected, IP address: ");
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Serial.println(WiFi.localIP());
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WiFi.setAutoReconnect(true);
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WiFi.persistent(true);
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server.begin();
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delay(500);
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Serial.println("Setup completed");
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}
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void loop() {
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if (digitalRead(D2) == HIGH) {
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digitalWrite(LED_BUILTIN, LOW); // D1 Mini: turns the LED *on*
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}
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else {
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digitalWrite(LED_BUILTIN, HIGH); // D1 Mini: turns the LED *off*
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}
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WiFiClient client = server.available(); // Listen for incoming clients
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if (client) {
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String currentLine = ""; // make a String to hold incoming data from the client
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while (client.connected()) { // loop while the client's connected
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if (client.available()) { // if there's bytes to read from the client,
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char c = client.read(); // read a byte, then
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//Serial.write(c); // print it out the serial monitor
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header += c;
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if (c == '\n') { // if the byte is a newline character
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// if the current line is blank, you got two newline characters in a row.
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// that's the end of the client HTTP request, so send a response:
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if (currentLine.length() == 0) {
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// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
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// and a content-type so the client knows what's coming, then a blank line:
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client.println("HTTP/1.1 200 OK");
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client.println("Content-type: application/json; charset=utf-8");
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client.println("Connection: close");
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client.println();
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// Display the HTML web page
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if (digitalRead(D2) == HIGH) {
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client.println("{ \"open\": true }");
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}
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else {
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client.println("{ \"open\": false }");
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}
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// The HTTP response ends with another blank line
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client.println();
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break;
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}
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else { // if you got a newline, then clear currentLine
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currentLine = "";
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}
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}
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else if (c != '\r') { // if you got anything else but a carriage return character,
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currentLine += c; // add it to the end of the currentLine
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}
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}
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}
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// Clear the header variable
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header = "";
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// Close the connection
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client.stop();
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Serial.println("Client disconnected");
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Serial.println("");
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}
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}
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