Arduino Uno + ESP8266-05 Basic code for setting ESP-05 over Arduino IDE console

/*

 * Uses Arduino Due to redirect terminal commands to the ESP8266

 * USB cable connected to PROGRAMMING port of Due

 * ESP8266 connected to UART 1 of Due

 * 

 * http://startingelectronics.org/articles/ESP8266-testing/

 * 

 * Date: 5 December 2016    Author: W. Smith

 */

#include <SoftwareSerial.h>

SoftwareSerial ESPserial(3, 2); // RX | TX

void setup() {

  Serial.begin(74880);   // USB serial port of Due (PROGRAMMING)

  ESPserial.begin(74880);  // ESP8266 on Serial Port 1 of Due (UART 1)

}

char rx_byte = 0;

void loop() {

  // send terminal byte to ESP8266

  if (Serial.available() > 0) {

    rx_byte = Serial.read();

    ESPserial.print(rx_byte);

  }

  // send ESP8266 byte to terminal

  if (ESPserial.available() > 0) {

    rx_byte = ESPserial.read();

    Serial.print(rx_byte);

  }

}