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.. _arduino-setup:
setup()
=======
The setup() function is called when a sketch starts. Use it to
initialize variables, pin modes, start using libraries, etc. The
setup function will only run once, after each powerup or reset of
the Arduino board.
Example
~~~~~~~
::
int buttonPin = 3;
void setup()
{
Serial.begin(9600);
pinMode(buttonPin, INPUT);
}
void loop()
{
// ...
}
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