bbb-nrf24l01

bbb-nrf24l01

A bonescript module for beaglebone that interfaces with the nrf24l010. This module is based on this (https://github.com/aaronds/arduino-nrf24l01) library for arduino.

This module uses the node-spi library for the communication layer.

It is still on its first version and needs a lot of improvemens. It doesn't support interruption yet. Any help on the source code will be very appreciated.

Requirements

To use this module you need to have the SPI0 of the beaglebone enabled. You can follow the third tutorial (SPI0) of this page.

Wiring

nrf25l01    ->     Beaglebone
--------           ----------
GND                GND (P9_1 or P9_2)
3.3V               3.3V (P9_3 or P9_4)
CE                 P9_16 (configurable)
CSN                SPI0.CS (P9_17)
SCKL               SPI0.SCLK (P9_22)
MOSI               SPI0.D1 (P9_18)
MISO               SPI0.D0 (P9_21)
IRQ                (not used yet)

Installation

npm install bbb-nrf24l01

Basic Usage

Initialization

var nrf = require('bbb-nrf24l01');
nrf.spiDev = '/dev/spidev1.0'; // This always needs to be the first property to be set
nrf.channel = 0; //0 - 127 and 0 - 84 in the US
nrf.payload = 4; //Size in bytes of the payload
nrf.address = 'serve'; //Address for receiving messages (Must be 5 bytes long)
nrf.startReceiving();

If you need to change the CE pin, just do

nrf.cePin = 'P9_15'; //Or whatever other IO pin

Receiving data

if (nrf.dataReady()) {
  var data = nrf.getData(); // Returns a Buffer object with the data received
}

Sending data

nrf.setToAddr('clien'); //Address of the receiver (also needs to have 5 bytes only)
var buf = new Buffer('msg'); // The size of the buffer needs to be the same as the payload
nrf.sendData(buf);
while (nrf.isSending());

Contact

And doubts and/or suggestions regarding this library you can reach me at thiago.rdp at gmail.

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.