nrf905

Node.js driver for RF905 module

The NRF905 isn't a popular module for IoT applications: It's not the most efficient module and there's a lot more code to find for other modules like the NRF24L01. But the NRF905 offers superior range and as it happens I have quite a few of them lying around. Note that you have to run this as root as the RPIO package requires it to access the SPI.

Usage

Include in code

var Nrf905 = require('./nrf905.js'); var radio = new Nrf905();

Initialize module

radio.init();

Set the receiver address of the module

radio.setAddress([0x66, 0x66, 0x66, 0x66]);

Expects an array of 4 bytes

Attach a callback when the module receives data

radio.attachReceivedCallback(function(err, payload) { console.log(payload); });

detach with detachReceivedCallback(function)

Start receiving

radio.startReceiveMode();

Stop receiving

radio.stopReceiveMode();

Enable or disable sleep (doesn't receive when in sleep mode)

radio.powerUp(); radio.powerDown();

Powering up takes 3 ms

Send a packet (re-enables receive mode after sending)

radio.sendPacket([0x77, 0x77, 0x77, 0x77], "abcdefABCDEF");

First parameter is an array of 4 bytes of the destination address, second parameter the payload (up to 32 bytes, unchecked for now)

Write your own config

radio.writeConfig([offset], [configarray])

Please refer to the NRF905 datasheet to get more information on how to configure this module.

Read config

radio.readConfig()

Returns a string with the config array represented as HEX number, useful for debugging and testing.