Example of using the nRF24L01+ with Node.js on the Raspberry Pi

nrftest.js

var spiDev = "/dev/spidev0.0";
var cePin = 24;
var irqPin = 25;

var nrf = require('nrf');
var radio = nrf.connect(spiDev, cePin, irqPin); // Connect to the radio
radio.channel(0x4c); // Set channel to 76
radio.dataRate('1Mbps') // Set data rate to 1Mbps
radio.crcBytes(2) // Set the CRC to 2
radio.autoRetransmit({
	count: 15,
	delay: 4000
}); // Auto retransmit up to 15 times

// Start the radio
radio.begin(function() {

	var rx = radio.openPipe('rx', 0xF0F0F0F0E1); // Listen at address 
	var tx = radio.openPipe('tx', 0xF5F0F0F0F2); // Send to address

	// Fires when our transmission pipe is ready
	tx.on('ready', function() {
		console.log("TX Ready");
		tx.write("I-PI!"); // Send a quick "I'm here" message
	});

	// Fires when our reception pipe is ready
	rx.on('ready', function() {
		console.log("RX Ready");
		radio.printDetails();
	});

	// Fires when our reception pipe recieves data
	rx.on('data', function(d) {
		console.log("Recieved:", d.toString('utf8')); // Decode the data and print 
		tx.write(d); // Send back the same data we just got
	});

	// Handler for errors
	tx.on('error', function(e) {
		console.log("Error:", e);
	});
	rx.on('error', function(e) {
		console.log("Error:", e);
	});
});