101 lines
2.3 KiB
Arduino
101 lines
2.3 KiB
Arduino
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/*
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* This sketch demonstrates how to set up a simple HTTP-like server.
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* The server will set a GPIO pin depending on the request
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* http://server_ip/gpio/0 will set the GPIO2 low,
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* http://server_ip/gpio/1 will set the GPIO2 high
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* server_ip is the IP address of the ESP8266 module, will be
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* printed to Serial when the module is connected.
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*/
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#include <WiFi.h>
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const char* ssid = "your-ssid";
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const char* password = "your-password";
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// Create an instance of the server
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// specify the port to listen on as an argument
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WiFiServer server(80);
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void setup()
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{
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Serial.begin(115200);
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delay(10);
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// prepare GPIO2
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pinMode(2, OUTPUT);
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digitalWrite(2, 0);
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// Connect to WiFi network
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Serial.println();
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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.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.println("WiFi connected");
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// Start the server
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server.begin();
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Serial.println("Server started");
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// Print the IP address
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Serial.println(WiFi.localIP());
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}
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void loop()
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{
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// Check if a client has connected
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WiFiClient client = server.available();
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if (!client) {
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return;
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}
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// Wait until the client sends some data
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Serial.println("new client");
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while(!client.available()) {
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delay(1);
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}
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// Read the first line of the request
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String req = client.readStringUntil('\r');
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Serial.println(req);
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client.flush();
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// Match the request
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int val;
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if (req.indexOf("/gpio/0") != -1) {
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val = 0;
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} else if (req.indexOf("/gpio/1") != -1) {
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val = 1;
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} else {
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Serial.println("invalid request");
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client.stop();
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return;
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}
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// Set GPIO2 according to the request
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digitalWrite(2, val);
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client.flush();
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// Prepare the response
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String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now ";
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s += (val)?"high":"low";
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s += "</html>\n";
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// Send the response to the client
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client.print(s);
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delay(1);
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Serial.println("Client disonnected");
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// The client will actually be disconnected
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// when the function returns and 'client' object is detroyed
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}
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