Reading data from Arduino not work

I've been searching in the forum but I do not find something to help me, I'm trying to read data from Arduino with Serial.read(), but has not worked for me.

It is a simple sketch:

Code:

int ledPin = 9;

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  if (Serial.available() > 0) {
    int data = Serial.read();
    if(data == 0)
      digitalWrite(ledPin, LOW);
    else
      digitalWrite(ledPin, HIGH);
  }
}

to send data to Arduino I do using

but it does not work and console freezes. I could read data from Arduino and if it works.

Thanks for any help.

 

If you will write 0 in console

Code:

int data = Serial.read();

it will write 48 because 0 in ASCII is 48(int), so you have to subtract this 48, so code is:

Code:

int data = Serial.read() - '0';

Command I always use is

Code:

minicom -D /dev/ttyMCC

 

Thanks @klakier2121 that was my mistake, for this test use Serial.parseInt() to get the digit, on the other hand, I did not know minicom -D /dev/ttyMCC although at times it is frozen and I have to turn off and on again.