RFM9X.NetMF on Github

After a month of posts the source code of V0.9 of my RFM9X/SX127X library is on GitHub. I included all of the source for my test harness and proof of concept(PoC) applications so other people can follow along with “my learning experience”.

I need to trial with some more hardware, frequency bands, variety of clients, initialisation configurations and backport the last round of fixes from my .Net library.

The simplest possible application .NetMF using the new library

// Copyright (c) August 2018, devMobile Software
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//     http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
namespace devMobile.IoT.NetMF.Rfm9X.Client
using System;
using System.Text;
using System.Threading;
using devMobile.IoT.NetMF.ISM;
using Microsoft.SPOT;
using SecretLabs.NETMF.Hardware.Netduino;

public class Program
public static void Main()
Rfm9XDevice rfm9XDevice = new Rfm9XDevice(Pins.GPIO_PIN_D10, Pins.GPIO_PIN_D9, Pins.GPIO_PIN_D2);
byte MessageCount = Byte.MinValue;

rfm9XDevice.Initialise( Rfm9XDevice.RegOpModeMode.ReceiveContinuous, 915000000, paBoost: true, rxPayloadCrcOn: true);
rfm9XDevice.OnDataReceived += rfm9XDevice_OnDataReceived;
rfm9XDevice.OnTransmit += rfm9XDevice_OnTransmit;

while (true)
string messageText = "Hello NetMF LoRa! " + MessageCount.ToString();
MessageCount += 1;
byte[] messageBytes = UTF8Encoding.UTF8.GetBytes(messageText);
Debug.Print("Sending " + messageBytes.Length + " bytes message " + messageText);


static void rfm9XDevice_OnTransmit()

static void rfm9XDevice_OnDataReceived(byte[] data)
string messageText = new string(UTF8Encoding.UTF8.GetChars(data));

Debug.Print("Received " + data.Length.ToString() + " byte message " + messageText);
catch (Exception ex)

// Dirty hack for Rosyln
namespace System.Diagnostics
public enum DebuggerBrowsableState
Never = 0,
Collapsed = 2,
RootHidden = 3

I need to do more testing (especially of the initialisation options) and will add basic device addressing soon so my field gateway will only see messages which it is interested in.

One thought on “RFM9X.NetMF on Github

  1. Pingback: .Net Meadow LoRa library Part1 | devMobile's blog

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.