Paso 4: Programa de la Web
Este es el programa de la web, esto le permitirá ajustar el ángulo del servo en una aplicación web, el servidor web se encuentra alojado en Linkit uno y necesita entrar en las credenciales de WiFi en el programa. La dirección IP del servidor se mostrará en un monitor serial una vez que la Junta está conectada a la red WiFi.
#include #include #include #include #include Servo myservo; #define WIFI_AP "SSID" #define WIFI_PASSWORD "PASSWORD" #define WIFI_AUTH LWIFI_WPA int serverPort = 80; LWiFiServer server(serverPort); int LED = 13; int val;void setup() { pinMode(LED, OUTPUT); myservo.attach(9); LWiFi.begin(); Serial.begin(115200); // keep retrying until connected to AP Serial.println("Connecting to AP"); while (0 == LWiFi.connect(WIFI_AP, LWiFiLoginInfo(WIFI_AUTH, WIFI_PASSWORD))) { digitalWrite(LED, HIGH); delay(100); digitalWrite(LED, LOW); delay(100); digitalWrite(LED, HIGH); delay(100); digitalWrite(LED, LOW); delay(600); } digitalWrite(LED, HIGH); printWifiStatus(); Serial.println("Start Server"); server.begin(); Serial.println("Server Started"); digitalWrite(LED, LOW); }int loopCount = 0;void loop() { // put your main code here, to run repeatedly: String str = ""; String url = ""; int i; delay(500); loopCount++; LWiFiClient 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()) { // we basically ignores client request, but wait for HTTP request end char c = client.read(); Serial.print(c); if(c != '\n') str += c; if(c == '\n') { //Serial.println(str); if(str.startsWith("GET ")) { url = str.substring(4, str.lastIndexOf(" ")); Serial.print("URL:"); Serial.print(url); Serial.println(":"); } str = ""; } if (c == '\n' && currentLineIsBlank) { Serial.println("send response"); // 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(); if(url != String("favicon.ico")) { client.println(""); client.println(" \n \n \n"); IPAddress ip = LWiFi.localIP(); client.println(" "); client.println(" Enter the servo angle, any value between 0 - 180"); client.println(" Angle: "); url.toLowerCase(); val = url.substring(4).toInt(); myservo.write(val); client.println("Current Servo Angle"); client.println(val); client.println("\n"); client.println(); break; } } if (c == '\n') { // you're starting a new line currentLineIsBlank = true; } else if (c != '\r') { // you've gotten a character on the current line currentLineIsBlank = false; } } } // give the web browser time to receive the data delay(50); // close the connection: Serial.println("close connection"); client.stop(); Serial.println("client disconnected"); } }void printWifiStatus() { // print the SSID of the network you're attached to: Serial.print("SSID: "); Serial.println(LWiFi.SSID()); // print your WiFi shield's IP address: IPAddress ip = LWiFi.localIP(); Serial.print("IP Address: "); Serial.println(ip); Serial.print("subnet mask: "); Serial.println(LWiFi.subnetMask()); Serial.print("gateway IP: "); Serial.println(LWiFi.gatewayIP()); // print the received signal strength: long rssi = LWiFi.RSSI(); Serial.print("signal strength (RSSI):"); Serial.print(rssi); Serial.println(" dBm"); }
