Created
May 29, 2017 04:22
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esp8266-web-server.c
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#include "ESP8266WiFi.h"; | |
const char* ssid = "your-ssid"; | |
const char* password = "your-password"; | |
// especificamos el puerto | |
WiFiServer server(80); | |
void setup() { | |
Serial.begin(115200); | |
delay(10); | |
// configuramos la salida (GPIO2) | |
pinMode(2, OUTPUT); | |
digitalWrite(2, 0); | |
// conectamos a alguna red WIFI | |
Serial.println(); | |
Serial.println(); | |
Serial.print("Connecting to "); | |
Serial.println(ssid); | |
WiFi.begin(ssid, password); | |
while (WiFi.status() != WL_CONNECTED) { | |
delay(500); | |
Serial.print("."); | |
} | |
Serial.println(""); | |
Serial.println("WiFi connected"); | |
// inciamos el servidor web | |
server.begin(); | |
Serial.println("Server started"); | |
// imprimimos la direccion IP | |
Serial.println(WiFi.localIP()); | |
} | |
void loop() { | |
// revisamos si el cliente esta conectado | |
WiFiClient client = server.available(); | |
if (!client) { | |
return; | |
} | |
// esperamos qu el cliente envie algun dato | |
Serial.println("new client"); | |
while(!client.available()){ | |
delay(1); | |
} | |
// leemos la primera linea de respuesta | |
String req = client.readStringUntil('\r'); | |
Serial.println(req); | |
client.flush(); | |
int val; | |
if (req.indexOf("/gpio/0") != -1) | |
val = 0; | |
else if (req.indexOf("/gpio/1") != -1) | |
val = 1; | |
else { | |
Serial.println("invalid request"); | |
client.stop(); | |
return; | |
} | |
// configuramos la salida (GPIO2) dependiendo de la respuesta | |
digitalWrite(2, val); | |
client.flush(); | |
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 "; | |
s += (val)?"high":"low"; | |
s += "</html>\n"; | |
// enviamos la respuesta al cliente | |
client.print(s); | |
delay(1); | |
Serial.println("Client disonnected"); | |
} |
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