Practical C Programming

How it works...

We will define a Led variable and set it to represent pin 13 of Arduino. By invoking the pinMode function, the Led variable is declared as the output pin and, hence, we will use it for connecting to an output device in order to perform a desired action. In this application, the output device will be an LED.

Because we want our PC to communicate with Arduino using serial communication, we need to set the data rate in terms of bits per second. So, we will call the Serial.begin function to set the serial data transmission speed at 9,600 bits per second (however, it can be any baud rate). Thereafter, we will display a message on the serial port in a human-readable format, informing the user that 0 can be pressed to switch off ...