Fix the issue why complete code are not run and nothing are showed in WiFi setting like SSID.
Pin config:
- USB to TTL Converter 3v3 - ESP8266 (VCC)
- USB to TTL Converter GND - ESP8266 (GND)
- Arduino pin 10 - ESP8266 (RX)
- Arduino pin 11 - ESP8266 (TX)
- Arduino GND - ESP8266 (CH_PD)
Now this is my code I want to connect the Android application to ESP module using WiFi after that I will be able to control relay on and off.
The code is here:
#include <SoftwareSerial.h>
#define DEBUG true
#define LED 40
#define two 42
#define three 44
#define four 46
SoftwareSerial esp8266(10,11); // 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()
{
pinMode(LED,OUTPUT);
pinMode(two,OUTPUT);
pinMode(three,OUTPUT);
pinMode(four,OUTPUT);
Serial.begin(9600);
esp8266.begin(9600); // your esp's baud rate might be different
sendData("AT+RST\r\n",2000,DEBUG); // reset module
sendData("AT+CWMODE=2\r\n",1000,DEBUG); // configure as access point
sendData("AT+CIFSR\r\n",1000,DEBUG); // get ip address
sendData("AT+CIPMUX=1\r\n",1000,DEBUG); // configure for multiple connections
sendData("AT+CIPSERVER=1,80\r\n",1000,DEBUG); // turn on server on port 80
Serial.println("server started running on socket # 192.168.4.1:80");
}
void loop()
{
if(esp8266.available()) // check if the esp is sending a message
{
String cc="";
while(esp8266.available()){
// The esp has data so display its output to the serial window
char c = esp8266.read(); // read the next character.
Serial.write(c);
cc+=c;
}
Serial.print(cc);
delay(1000);
if(esp8266.find("+IPD,"))
{
delay(100);
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
Serial.print("conn id = ");
Serial.println(connectionId);
String msg="";
while(esp8266.available()){
char c=esp8266.read();
msg+=c;
}
Serial.print("msg = ");
Serial.println(msg);
String vv=msg.substring(10,16);
Serial.print("vv = ");
Serial.println(vv);
vv.trim();
/////////////////////////////////////////////////////////
if(vv.length()>0){
if(vv=="sw1:on"){
Serial.println("switch 1 is turned on");
digitalWrite(LED,HIGH);
}
if(vv=="sw1:of"){
Serial.println("switch 1 is turned off");
digitalWrite(LED,LOW);
}
if(vv=="sw2:on"){
Serial.println("switch 2 is turned on");
digitalWrite(two,HIGH);
}
if(vv=="sw2:of"){
Serial.println("switch 2 is turned off");
digitalWrite(two,LOW);
}
if(vv=="sw3:on"){
Serial.println("switch 3 is turned on");
digitalWrite(three,HIGH);
}
if(vv=="sw3:of"){
Serial.println("switch 3 is turned off");
digitalWrite(three,LOW);
}
if(vv=="sw4:on"){
Serial.println("switch 4 is turned on");
digitalWrite(four,HIGH);
}
if(vv=="sw4:of"){
Serial.println("switch 4 is turned off");
digitalWrite(four,LOW);
}
if(vv=="sw_:on"){
Serial.println("all switches are turned on");
digitalWrite(LED,HIGH);
digitalWrite(two,HIGH);
digitalWrite(three,HIGH);
digitalWrite(four,HIGH);
}
if(vv=="sw_:of"){
Serial.println("all switches are turned off");
digitalWrite(LED,LOW);
digitalWrite(two,LOW);
digitalWrite(three,LOW);
digitalWrite(four,LOW);
}
}
///////////////////////////////////////////////////////////
String closeCommand = "AT+CIPCLOSE=";
closeCommand+=connectionId; // append connection id
closeCommand+="\r\n";
sendData(closeCommand,3000,DEBUG);
}
}
}
String sendData(String command, const int timeout, boolean debug)
{
String response = "";
Serial.print("command => ");
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 => ");
Serial.print(response);
}
return response;
}
