I am trying to communicate with my ESP8266-07 through Arduino Nano Serial. I am using AT commands to reset, connect wifi, connect TCP server and so on. I have got one functional script, so i know that ESP8266 is wired correctly. I am using 3.3V to 5V logic converter and so on... This is the older functional script:
void esp_connect() {
Serial.println("AT+RST");
delay(2);
esp_timefuse = millis();
while(Serial.find("ready") == false) {
if(esp_timefuse - millis() >= 5000)
esp_connect();
}
Serial.println("AT+CWMODE=3");
delay(2);
esp_timefuse = millis();
while(Serial.find("OK") == false) {
if(esp_timefuse - millis() >= 2000)
esp_connect();
}
Serial.println("AT+CWJAP=\"WiFi 7-pekiel\",\"43664366\"");
delay(2);
esp_timefuse = millis();
while(Serial.find("OK") == false) {
if(esp_timefuse - millis() >= 2000)
esp_connect();
}
Serial.println("AT+CIPMUX=1");
delay(2);
esp_timefuse = millis();
while(Serial.find("OK") == false) {
if(esp_timefuse - millis() >= 2000)
esp_connect();
}
Serial.println("AT+CIPSTART=0,\"TCP\",\"10.10.10.6\",3600");
delay(2);
esp_timefuse = millis();
while(Serial.find("OK") == false) {
if(esp_timefuse - millis() >= 2000)
esp_connect();
}
}
But I am not satisfied with it. I am trying to do it best. So i wrote this script:
void esp_connect() {
Serial.println("AT+RST");
Serial.flush();
Serial.setTimeout(5000);
if(Serial.find("ready"));
else esp_connect();
Serial.println("AT+CWMODE=3");
Serial.flush();
Serial.setTimeout(2000);
if(Serial.find("OK"));
else esp_connect();
Serial.println("AT+CWJAP=\"WiFi 7-pekiel\",\"43664366\"");
Serial.flush();
if(Serial.find("OK"));
else esp_connect();
Serial.println("AT+CIPMUX=1");
Serial.flush();
if(Serial.find("OK"));
else esp_connect();
Serial.println("AT+CIPSTART=0,\"TCP\",\"10.10.10.6\",3600");
Serial.flush();
if(Serial.find("OK"));
else esp_connect();
}
When I am testing this new script through Serial monitor everything works. I am simulating ESP8266 so I just type "OK" and "OK" just like ESP8266. But when I connect it to ESP8266 nothing works. Where is the Mistake in my script? Is my usage of Serial.find() correct?
I found that code is working perfectly and the mistake was too short timeout for connect to wifi. Two second was too short time duration for ESP8266. Quite a dumb mistake...