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- // Load Wi-Fi library
- #include <WiFi.h>
- //Load Temp Sensor Libraries
- #include <OneWire.h>
- #include <DallasTemperature.h>
- //Load EEPROM Library
- #include <EEPROM.h>
- // define the number of bytes you want to access
- #define EEPROM_SIZE 1
- //Define temp probe pin
- #define ONE_WIRE_BUS 15
- // set up 1-wire probes
- OneWire oneWire(ONE_WIRE_BUS);
- DallasTemperature sensors(&oneWire);
- DeviceAddress AIR_TEMP_SENSOR = {0x28, 0xFF, 0x16, 0x8D, 0x87, 0x16, 0x03, 0x50}; //Test sensor A
- DeviceAddress VAT_TEMP_SENSOR = {0x28, 0xFF, 0x0A, 0x2E, 0x68, 0x14, 0x04, 0xA6}; //Test sensor B
- //variables for temp sensors
- float air_temp;
- float vat_temp;
- //set temp variables
- float set_temp;
- float new_set_temp;
- // Replace with your network credentials
- const char* ssid = "YOUR_WIFI_SSID";
- const char* password = "YOUR_PASSWORD";
- // Set web server port number to 80
- WiFiServer server(80);
- // Variable to store the HTTP request
- String header;
- WiFiClient client = server.available();
- void setup() {
- Serial.begin(115200);
- //Start EEPROM at defined size (above).
- EEPROM.begin(EEPROM_SIZE);
- // Set up temperature probes
- sensors.setResolution(AIR_TEMP_SENSOR, 11); //resolution of 0.125deg cels,
- sensors.setResolution(VAT_TEMP_SENSOR, 11); //takes approx 375ms
- // Connect to Wi-Fi network with SSID and password
- Serial.print("Connecting to ");
- Serial.println(ssid);
- WiFi.begin(ssid, password);
- while (WiFi.status() != WL_CONNECTED) {
- delay(500);
- Serial.print(".");
- }
- // Print local IP address and start web server
- Serial.println("");
- Serial.println("WiFi connected.");
- Serial.println("IP address: ");
- Serial.println(WiFi.localIP());
- server.begin();
- //set up set temp variables here.
- if (EEPROM.read(0) != 255) {
- set_temp = EEPROM.read(0);
- }
- if (EEPROM.read(0) == 255) {
- set_temp = 19.0;
- }
- new_set_temp = set_temp;
- }
- void loop(){
- //Get temps
- sensors.requestTemperaturesByAddress(AIR_TEMP_SENSOR);
- sensors.requestTemperaturesByAddress(VAT_TEMP_SENSOR);
- vat_temp = sensors.getTempC(VAT_TEMP_SENSOR);
- air_temp = sensors.getTempC(AIR_TEMP_SENSOR);
- //run web server
- web_server();
- //conditional statement to run webserver
- /*WiFiClient client = server.available(); // Listen for incoming clients
- if (client) {
- web_server();
- }*/
- }
- void web_server(){
- WiFiClient client = server.available(); // Listen for incoming clients
- if (client) { // If a new client connects,
- Serial.println("New Client."); // print a message out in the serial port
- String currentLine = ""; // make a String to hold incoming data from the client
- while (client.connected()) { // loop while the client's connected
- if (client.available()) { // if there's bytes to read from the client,
- char c = client.read(); // read a byte, then
- Serial.write(c); // print it out the serial monitor
- header += c;
- if (c == 'n') { // if the byte is a newline character
- // if the current line is blank, you got two newline characters in a row.
- // that's the end of the client HTTP request, so send a response:
- if (currentLine.length() == 0) {
- // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
- // and a content-type so the client knows what's coming, then a blank line:
- client.println("HTTP/1.1 200 OK");
- client.println("Content-type:text/html");
- client.println("Connection: close");
- client.println();
- //Set Temp Changes By Button
- if (header.indexOf("GET /set/up") >= 0) {
- Serial.println("Increase New Set Temperature by 0.5");
- new_set_temp = new_set_temp + 0.5;
- }
- else if (header.indexOf("GET /set/down") >= 0) {
- Serial.println("Decrease New Set Temperature by 0.5");
- new_set_temp = new_set_temp - 0.5;
- }
- //Submit button for changing set temp
- if (header.indexOf("GET /set/submit") >= 0) {
- Serial.print("Change Set Temp To ");
- set_temp = new_set_temp;
- Serial.println(set_temp);
- EEPROM.write(0, set_temp);
- EEPROM.commit();
- Serial.println("EEPROM Write");
- }
- // Display the HTML web page
- client.println("<!DOCTYPE html><html>");
- client.println("<head><meta name="viewport" content="width=device-width, initial-scale=1">");
- client.println("<link rel="icon" href="data:,">");
- //CSS Styles
- client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center; font-size: 15px}");
- client.println(".button {background-color: lightgrey; color: black; padding: 10px 20px; text-decoration: none; font-size: 15px; margin: 2px; cursor: pointer; border-color: black; border-style: solid; border-radius: 10px;}");
- client.println(".temp {background-color: #4CAF50; color: white; padding: 10px 30px; text-decoration: none; font-size: 15px; margin: 2px; border-color: black; border-style: none; border-radius: 10px;}");
- client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
- client.println("</style></head>");
- // Web Page Heading
- client.println("<body><h1>Laser Snake Temperature</h1>");
- //Set Temp Line
- client.println("Set Temperature =");
- client.println("<inline-block class="temp">" );
- client.println(set_temp);
- client.println("℃</inline-block><br><br><br>");
- //Change Set Temp Line
- client.println("New Set Temperature =");
- client.println("<inline-block class="temp">" );
- client.println(new_set_temp);
- client.println("℃</inline-block>");
- client.println("<a href="/set/up"><button class="button">+</button></a><a href="/set/down"><button class="button">-</button></a><a href="/set/submit"><button class="button">SUBMIT</button></a></p><br>");
- //Fermenter Temp Line
- client.println("Fermenter Temperature =");
- client.println("<inline-block class="temp">" );
- client.println(vat_temp);
- client.println("℃</inline-block><br><br><br>");
- //Fridge Temp Line
- client.println("Fridge Temperature =");
- client.println("<inline-block class="temp">" );
- client.println(air_temp);
- client.println("℃</inline-block><br><br><br>");
- client.println("</body></html>");
- // The HTTP response ends with another blank line
- client.println();
- // Break out of the while loop
- break;
- } else { // if you got a newline, then clear currentLine
- currentLine = "";
- }
- } else if (c != 'r') { // if you got anything else but a carriage return character,
- currentLine += c; // add it to the end of the currentLine
- }
- }
- }
- // Clear the header variable
- header = "";
- // Close the connection
- client.stop();
- Serial.println("Client disconnected.");
- Serial.println("");
- }
- }
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