#include<SoftwareSerial.h>SoftwareSerial ESPserial(2,3); // RX | TXvoidsetup(){//Serial.begin(115200); // communication with the host computerSerial.begin(9600); // communication with the host computer//while (!Serial) { ; }// Start the software serial for communication with the ESP8266ESPserial.begin(115200);//ESPserial.begin(9600); // communication with the host computerSerial.println("");Serial.println("Remember to to set Both NL & CR in the serial monitor.");Serial.println("Ready");Serial.println("");}voidloop(){// listen for communication from the ESP8266 and then write it to the serial monitorif ( ESPserial.available() ) { //Serial.println("received"); Serial.write(ESPserial.read() ); }// listen for user input and send it to the ESP8266if ( Serial.available() ) { //Serial.println("read");ESPserial.write(Serial.read() ); }}
First use UNO-PC Serial Baud 9600, UNO-ESP Serial Baud 115200
In Serial Monitor (Baud 9600) : Type
AT // should get OK response
AT+UART_DEF=9600,8,1,0,0 // to change UNO-ESP baudrate to 9600*
Now, we have changed ESP8266 Serial to 9600.
Modify the Arduino Sketch to ESPserial.begin(115200); and upload again.
AT+CWMODE? // Current Connection Mode
AT+CWMODE=1 // Change Connection Mode to Mode=1 (Station mode)
AT+CWLAP // Show List of Avaiable WiFi
AT+CWJAP="SSID","๋น๋ฐ๋ฒํธ" // Connect with SSID and Password
AT+CIFSR // Check IP and MAC
