BoneScript
You might be able to see a newer version of this on beagleboard.org/support/bonescript/analogRead
analogRead(pin, [callback])
Read the voltage at an analog input pin.
Arguments
- pin: the pin identifier
- callback: called upon completion
Return value
- Number from 0 to 1 where 0 is 0V and 1 is the maximum input voltage (1.8V)
callback(x)
- x.value: return value
- x.err: error status message
Example
var b = require('bonescript');
b.analogRead('P9_36', printStatus);
function printStatus(x) {
console.log('x.value = ' + x.value);
console.log('x.err = ' + x.err);
}
Build and execute instructions
- Apply voltage between 0V and 1.8V to P9_36 and run the example code.
- Adjust the voltage between 0V and 1.8V to P9_36 and run the example code again.
- Alter the code to look at inputs on other analog input pins.
