BoneScript
You might be able to see a newer version of this on beagleboard.org/support/bonescript/digitalRead
digitalRead(pin, [callback])
Read the status of a digital I/O pin.
Arguments
- pin: the BeagleBone pin identifier
- callback: called upon completion
Return value
callback(err,value)
- value: return value
- err: error status message
Example
var b = require('bonescript');
b.pinMode('P8_19', b.INPUT);
b.digitalRead('P8_19', printStatus);
function printStatus(err,value) {
console.log('value = ' + value);
console.log('err = ' + err);
}
Build and execute instructions
- Apply 0V to P8_19 and run the example code.
- Apply 3.3V to P8_19 and run the example code again.
- Alter the code to look at inputs on other pins.
