So I wanted to do some home automation, so I assigned an esp8266 to each of the rooms of my house, all of them are connected to a single wifi as clients with static ip addresses, so I can control my lights by sending get request to each esps IP, so my problem is that I want to make a webserver running on an arduino or esp8266 so that it could save the states of all the lights of the house. I can easily do this on wammp where php will handle all the get requests made by the client esps and save the data in a database, but can a webserver(on esp or arduino) handle those get requests and save the states in some memory.
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- drz49609 2018-05-21 02:25关注
Yes, you can run a webserver with Arduino. This is the example from https://www.arduino.cc/en/Tutorial/WebServer
/* Web Server A simple web server that shows the value of the analog input pins. using an Arduino Wiznet Ethernet shield. Circuit: * Ethernet shield attached to pins 10, 11, 12, 13 * Analog inputs attached to pins A0 through A5 (optional) created 18 Dec 2009 by David A. Mellis modified 9 Apr 2012 by Tom Igoe modified 02 Sept 2015 by Arturo Guadalupi */ #include <SPI.h> #include <Ethernet.h> // Enter a MAC address and IP address for your controller below. // The IP address will be dependent on your local network: byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; IPAddress ip(192, 168, 1, 177); // Initialize the Ethernet server library // with the IP address and port you want to use // (port 80 is default for HTTP): EthernetServer server(80); void setup() { // Open serial communications and wait for port to open: Serial.begin(9600); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only } // start the Ethernet connection and the server: Ethernet.begin(mac, ip); server.begin(); Serial.print("server is at "); Serial.println(Ethernet.localIP()); } void loop() { // listen for incoming clients EthernetClient client = server.available(); if (client) { Serial.println("new client"); // an http request ends with a blank line boolean currentLineIsBlank = true; while (client.connected()) { if (client.available()) { char c = client.read(); Serial.write(c); // if you've gotten to the end of the line (received a newline // character) and the line is blank, the http request has ended, // so you can send a reply if (c == ' ' && currentLineIsBlank) { // send a standard http response header client.println("HTTP/1.1 200 OK"); client.println("Content-Type: text/html"); client.println("Connection: close"); // the connection will be closed after completion of the response client.println("Refresh: 5"); // refresh the page automatically every 5 sec client.println(); client.println("<!DOCTYPE HTML>"); client.println("<html>"); // output the value of each analog input pin for (int analogChannel = 0; analogChannel < 6; analogChannel++) { int sensorReading = analogRead(analogChannel); client.print("analog input "); client.print(analogChannel); client.print(" is "); client.print(sensorReading); client.println("<br />"); } client.println("</html>"); break; } if (c == ' ') { // you're starting a new line currentLineIsBlank = true; } else if (c != '') { // you've gotten a character on the current line currentLineIsBlank = false; } } } // give the web browser time to receive the data delay(1); // close the connection: client.stop(); Serial.println("client disconnected"); } }
Save the states in a global variable and initialize them in
setup()
. When a client sends its request, it has to send its id or ip and the server can response with the state.本回答被题主选为最佳回答 , 对您是否有帮助呢?解决 无用评论 打赏 举报
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