What is the output of Software Serial .read() function

Question

Hi I am new to arduino development i was using esp8266 using software serial library

here is the code

#include<stdlib.h>
#include <SoftwareSerial.h>

SoftwareSerial monitor(2, 3); // RX, TX

void setup()
{
  monitor.begin(9600);
  Serial.begin(9600);

  sendDebug("AT");
  delay(5000);
  Serial.println("Hello");
  if(monitor.find("OK"))
  {
   Serial.println(monitor.available());
   Serial.println((int)monitor.read());
   Serial.println((int)monitor.read());
    Serial.println(monitor.available());
   Serial.println("RECEIVED: OK");
    //connectWiFi();
  }
  else
  {
    Serial.println("RECEIVED: None");
  }
}

void loop(){

}


void sendDebug(String cmd){
  monitor.println(cmd);
  Serial.println("Command: "+cmd);
}

Output

Command: AT
Hello
2
13
10
0
RECEIVED: OK

All I know is monitor.available() return the available bytes that can be read and i can also deduce that these two bytes are O and K but the integer value doesn't corresponds to the ascii value of O and K

can anyone explain what is actually getting printed on the serial monitor what is 13 and 10 ? ??

Answer 1

It is just like https://www.arduino.cc/en/Serial/Read :

The monitor.find("OK"); already consumed the 'O' and the 'K' bytes, (see https://www.arduino.cc/en/Serial/Find ) then there were two bytes .available(), a 13=CarriageReturn and a 10=LineFeed, both returned by successive monitor.read()s, then zero more bytes in monitor.available().