HopeRF RFM69 Wireless Module

The HopeRF RFM69 is a transceiver module capable of operation over a wide frequency range, including the 315,433, 868 and 915MHz license-free ISM (Industry Scientific and Medical) frequency bands. (datasheet here)

A driver for it is available in the RFM69 (About Modules) module.

Note: This module is still very new, and doesn't support anywhere near all the features of the RFM69. Contributions are always appreciated!

Connect as follows:

For the Espruino Pico, there is an adaptor shim available that makes connecting this module a lot easier.

Software

There are simple functions that allow you to send and receive data:

To send data when the button is pressed:

var rfm;

function onInit() {
  SPI2.setup({mosi:B15,miso:B14,sck:B13});
  rfm = require("RFM69").connect(SPI2, {cs:B10, rst:B1, freq:434}, function() {
    console.log("Connected");
  });
}

setWatch(function() {
  digitalWrite(LED1,1);
  rfm.sendPacket("Hello World", function() {
    digitalWrite(LED1,0); // done sending
  });
}, BTN, {debounce:50, edge:"rising", repeat:true});

And to repeatedly listen for data:

var rfm;

function onInit() {
  SPI2.setup({mosi:B15,miso:B14,sck:B13});
  rfm = require("RFM69").connect(SPI2, {cs:B10, rst:B1, freq:434}, function() {
    rfm.rxmode(); // in order to receive data
    console.log("Connected");
    setInterval(function() { 
      if (rfm.hasPacket()) 
        console.log("Received : "+JSON.stringify(E.toString(rfm.getPacket()))); 
    },100);
  });
}

Reference

// Initialise the RFM69 - called automatically by require("RFM69").connect
RFM69.prototype.connect = function (callback) { ... }

// Internal: read register
RFM69.prototype.r = function (a) { ... }

// Internal: write register
RFM69.prototype.w = function (a, v) { ... }

// Internal: write register and value in one
RFM69.prototype.w16 = function (v) { ... }

/* Put the RFM69 into receive mode. After this,
 DIO0 should be raised if a packet is ready, however 
 you can poll with `hasPacket`
*/
RFM69.prototype.rxmode = function () { ... }

// Return true if RFM69 has received a packet, false otherwise
RFM69.prototype.hasPacket = function () { ... }

// Get a packet received by RFM69, as a Uint8Array
RFM69.prototype.getPacket = function () { ... }

// Send a packet, maximum length is 64 bytes
RFM69.prototype.sendPacket = function (d, callback) { ... }

/* Create an RFM69 object using the given SPI bus. 

`options` can contain:
  cs : chip select pin (required)
  rst : reset pin (optional)
  freq : frequency - one of 315, 434, 868, 915 (default is 434)

`callback` is optional and is called when the RFM69 has been initialised
*/
exports.connect = function (spi, options, callback) { ... }

Using

(No tutorials are available yet)