Programming Arduino is easy if you have some basics of any programming language. But if you know the c or c++ then it will be easier. It is simply a set of C/C++ functions. So we can call/use it from anywhere in the arduino code. Here in arduino a program is called as sketch. If we talk about “C” language a program contains some header files and function main() in all programs. It is just like a body of C Program.
In Arduino, a sketch containing the function setup() and loop(). So a basic sketch or program looks like this…
void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
A setup() is a function that runs only once and we use it generally for initialization or code you want to run it once. A loop() is a function that repeats continuously. So if you need to execute some code every time like refreshing screen, reading sensor value etc then place the code here.
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LED Blinking Program
This is the very basic program for the beginners. We upload the sketch to the arduino board and on board led starts blinking.
// the setup function runs once when you press reset or
// power the board
void setup() {
// initialize digital pin 13 as an output.
pinMode(13, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(13, HIGH); // turn the LED on
delay(1000); // wait for a second
digitalWrite(13, LOW); // turn the LED off
delay(1000); // wait for a second
}
How to Start Learning Arduino
We can learn arduino online by official arduino website or also available in arduino software Help->Reference. Once you have an understanding of arduino syntax and its library function do some Arduino Tutorials with different peripherals.
