Reference+
Name
releasePin()
Class
GPIO
Description
Gives ownership of a pin back to the operating system
Without calling this function, the pin will remain in the current
state even after the sketch has been closed.
Examples
import processing.io.*; boolean ledOn = false; void setup() { GPIO.pinMode(4, GPIO.OUTPUT); // On the Raspberry Pi, GPIO 4 is pin 7 on the pin header, // located on the fourth row, above one of the ground pins frameRate(0.5); } void draw() { ledOn = !ledOn; if (ledOn) { GPIO.digitalWrite(4, GPIO.LOW); } else { GPIO.digitalWrite(4, GPIO.HIGH); } } // cleanup on keypress void keyPressed() { GPIO.releasePin(4); exit(); }
Syntax
.releasePin(pin)
Parameters
pin
(int)
GPIO pin
Return
void
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