Esp8266 01 message to arduino uno
Posted: Wed Aug 10, 2016 2:23 amhi everyone, sorry if my english is too bad.
I have this setup code, in my ESP8266 - 01, it saves my WIFI config in the EEPROM.
This ESP8266 it's connected to arduino one. And i want to send messages with the url of the IP of my ESP8266, but after config my SSID and password WiFi i can't. Can anyone help me?
Pd: i want to send pin13 for example, to activate the pin13 of arduino.
Thanks if anyone can help me. i am a newbe, and this is for my university tesis
ESP8266 - 01 web ssid - pass config code:
Arduino Pin Code:
I have this setup code, in my ESP8266 - 01, it saves my WIFI config in the EEPROM.
This ESP8266 it's connected to arduino one. And i want to send messages with the url of the IP of my ESP8266, but after config my SSID and password WiFi i can't. Can anyone help me?
Pd: i want to send pin13 for example, to activate the pin13 of arduino.
Thanks if anyone can help me. i am a newbe, and this is for my university tesis
ESP8266 - 01 web ssid - pass config code:
Code: Select all
#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <EEPROM.h>
String pral = "<html>"
"<meta http-equiv='Content-Type' content='text/html; charset=utf-8'/>"
"<title>WIFI CONFIG</title> <style type='text/css'> body,td,th { color: #036; } body { background-color: #999; } </style> </head>"
"<body> "
"<h1>WIFI CONF</h1><br>"
"<form action='config' method='get' target='pantalla'>"
"<fieldset align='left' style='border-style:solid; border-color:#336666; width:200px; height:180px; padding:10px; margin: 5px;'>"
"<legend><strong>Configurar WI-FI</strong></legend>"
"SSID: <br> <input name='ssid' type='text' size='15'/> <br><br>"
"PASSWORD: <br> <input name='pass' type='password' size='15'/> <br><br>"
"<input type='submit' value='Comprobar conexion' />"
"</fieldset>"
"</form>"
"<iframe id='pantalla' name='pantalla' src='' width=900px height=400px frameborder='0' scrolling='no'></iframe>"
"</body>"
"</html>";
ESP8266WebServer server(80);
char ssid[20];
char pass[20];
String ssid_leido;
String pass_leido;
int ssid_tamano = 0;
int pass_tamano = 0;
String arregla_simbolos(String a) {
a.replace("%C3%A1", "á");
a.replace("%C3%A9", "é");
a.replace("%C3%A", "i");
a.replace("%C3%B3", "ó");
a.replace("%C3%BA", "ú");
a.replace("%21", "!");
a.replace("%23", "#");
a.replace("%24", "$");
a.replace("%25", "%");
a.replace("%26", "&");
a.replace("%27", "/");
a.replace("%28", "(");
a.replace("%29", ")");
a.replace("%3D", "=");
a.replace("%3F", "?");
a.replace("%27", "'");
a.replace("%C2%BF", "¿");
a.replace("%C2%A1", "¡");
a.replace("%C3%B1", "ñ");
a.replace("%C3%91", "Ñ");
a.replace("+", " ");
a.replace("%2B", "+");
a.replace("%22", "\"");
return a;
}
//**** CONFIGURACION WIFI *******
void wifi_conf() {
int cuenta = 0;
String getssid = server.arg("ssid"); //Recibimos los valores que envia por GET el formulario web
String getpass = server.arg("pass");
getssid = arregla_simbolos(getssid); //Reemplazamos los simbolos que aparecen cun UTF8 por el simbolo correcto
getpass = arregla_simbolos(getpass);
ssid_tamano = getssid.length() + 1; //Calculamos la cantidad de caracteres que tiene el ssid y la clave
pass_tamano = getpass.length() + 1;
getssid.toCharArray(ssid, ssid_tamano); //Transformamos el string en un char array ya que es lo que nos pide WIFI.begin()
getpass.toCharArray(pass, pass_tamano);
Serial.println(ssid); //para depuracion
Serial.println(pass);
WiFi.begin(ssid, pass); //Intentamos conectar
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
cuenta++;
if (cuenta > 20) {
graba(70, "noconfigurado");
server.send(200, "text/html", String("<h2>No se pudo realizar la conexion<br>no se guardaron los datos.</h2>"));
return;
}
}
Serial.print(WiFi.localIP());
graba(70, "configurado");
graba(1, getssid);
graba(30, getpass);
server.send(200, "text/html", String("<h2>Conexion exitosa a: "
+ getssid + "<br> El pass ingresado es: " + getpass + "<br>Datos correctamente guardados."));
}
//******* G R A B A R EN LA E E P R O M ***********
void graba(int addr, String a) {
int tamano = (a.length() + 1);
Serial.print(tamano);
char inchar[30]; //'30' Tamaño maximo del string
a.toCharArray(inchar, tamano);
EEPROM.write(addr, tamano);
for (int i = 0; i < tamano; i++) {
addr++;
EEPROM.write(addr, inchar[i]);
}
EEPROM.commit();
}
//******* L E E R EN LA E E P R O M **************
String lee(int addr) {
String nuevoString;
int valor;
int tamano = EEPROM.read(addr);
for (int i = 0;i < tamano; i++) {
addr++;
valor = EEPROM.read(addr);
nuevoString += (char)valor;
}
return nuevoString;
}
//********* INTENTO DE CONEXION *********************
void intento_conexion() {
if (lee(70).equals("configurado")) {
ssid_leido = lee(1); //leemos ssid y password
pass_leido = lee(30);
Serial.println(ssid_leido); //Para depuracion
Serial.println(pass_leido);
ssid_tamano = ssid_leido.length() + 1; //Calculamos la cantidad de caracteres que tiene el ssid y la clave
pass_tamano = pass_leido.length() + 1;
ssid_leido.toCharArray(ssid, ssid_tamano); //Transf. el String en un char array ya que es lo que nos pide WiFi.begin()
pass_leido.toCharArray(pass, pass_tamano);
int cuenta = 0;
WiFi.begin(ssid, pass); //Intentamos conectar
while (WiFi.status() != WL_CONNECTED) {
delay(500);
cuenta++;
if (cuenta > 20) {
Serial.println("Fallo al conectar");
return;
}
}
}
if (WiFi.status() == WL_CONNECTED) {
Serial.print("Conexion exitosa a: ");
Serial.println(ssid);
Serial.println(WiFi.localIP());
}
}
//***** S E T U P **************
void setup() {
Serial.begin(115200);
EEPROM.begin(4096);
WiFi.softAP("xxxxxxx"); //Nombre que se mostrara en las redes wifi
server.on("/", []() {
server.send(200, "text/html", pral);
});
server.on("/config", wifi_conf);
server.begin();
Serial.println("Webserver iniciado...");
Serial.println(lee(70));
Serial.println(lee(1));
Serial.println(lee(30));
intento_conexion();
}
//***** L O O P **************
void loop() {
server.handleClient();
delay(2000);
}
Arduino Pin Code:
Code: Select all
#include <SoftwareSerial.h>
#define DEBUG true
SoftwareSerial esp8266(2,3); // make RX Arduino line is pin 2, make TX Arduino line is pin 3.
// This means that you need to connect the TX line from the esp to the Arduino's pin 2
// and the RX line from the esp to the Arduino's pin 3
void setup()
{
Serial.begin(9600);
esp8266.begin(9600); // your esp's baud rate might be different
pinMode(11,OUTPUT);
digitalWrite(11,LOW);
pinMode(12,OUTPUT);
digitalWrite(12,LOW);
pinMode(13,OUTPUT);
digitalWrite(13,LOW);
}
void loop()
{
if(esp8266.available()) // check if the esp is sending a message
{
if(esp8266.find("+IPD,"))
{
delay(1000); // wait for the serial buffer to fill up (read all the serial data)
// get the connection id so that we can then disconnect
int connectionId = esp8266.read()-48; // subtract 48 because the read() function returns
// the ASCII decimal value and 0 (the first decimal number) starts at 48
esp8266.find("pin="); // advance cursor to "pin="
int pinNumber = (esp8266.read()-48)*10; // get first number i.e. if the pin 13 then the 1st number is 1, then multiply to get 10
pinNumber += (esp8266.read()-48); // get second number, i.e. if the pin number is 13 then the 2nd number is 3, then add to the first number
digitalWrite(pinNumber, !digitalRead(pinNumber)); // toggle pin
// make close command
String closeCommand = "AT+CIPCLOSE=";
closeCommand+=connectionId; // append connection id
closeCommand+="\r\n";
sendData(closeCommand,1000,DEBUG); // close connection
}
}
}
/*
* Name: sendData
* Description: Function used to send data to ESP8266.
* Params: command - the data/command to send; timeout - the time to wait for a response; debug - print to Serial window?(true = yes, false = no)
* Returns: The response from the esp8266 (if there is a reponse)
*/
String sendData(String command, const int timeout, boolean debug)
{
String response = "";
esp8266.print(command); // send the read character to the esp8266
long int time = millis();
while( (time+timeout) > millis())
{
while(esp8266.available())
{
// The esp has data so display its output to the serial window
char c = esp8266.read(); // read the next character.
response+=c;
}
}
if(debug)
{
Serial.print(response);
}
return response;
}