node-native-io contains sysfs bindings for gpio (and when finally working pwm) in nodejs.
var nativeio = require('native-io'); nativeio.createGPIO(22) .direction(nativeio.GPIO.OUT) .value(nativeio.GPIO.HIGH) ;
Install node-native-io with npm(1):
$ npm install node-native-io
Basically node-native-io uses a C++ add-on to give a nice api to the sysfs filesystem api.
Going to be supported when usage through device tree overlays is possible on my beaglebone black with archlinux.
The General Purpose Input Output module targets the sysfs api
var gpio = new nativeio.GPIO(22); // is equal to var gpio = nativeio.createGPIO(22);
On object creation the corresponding GPIO is created, on garbage collection it should be unexported.
if (gpio.value() === nativeio.GPIO.HIGH) gpio.value(native.io.GPIO.LOW);
Returns and sets value of a GPIO. If direction is
IN and you set a new
value you will get an error.
if (gpio.direction() === nativeio.GPIO.IN) gpio.direction(nativeio.GPIO.OUT);
Returns and sets direction of a GPIO.
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