The source code of my GHI Electronics TinyCLR-0SV2RC1 RFM9X/SX127X library is live on GitHub. The test harness uses a Fezduino and a dragino technology LoRa shield for Arduino. I will add FezPortal, FezFeather and Fezstick support soon.

A sample application which shows how to send/receive address/un-addresses payloads
//--------------------------------------------------------------------------------- // Copyright (c) March/April 2020, 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, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // // Need one of TINYCLR_V2_SC20100DEV/TINYCLR_V2_FEZDUINO defined //--------------------------------------------------------------------------------- namespace devMobile.IoT.Rfm9x.LoRaDeviceClient { using System; using System.Diagnostics; using System.Text; using System.Threading; using GHIElectronics.TinyCLR.Pins; using devMobile.IoT.Rfm9x; class Program { static void Main() { #if TINYCLR_V2_SC20100DEV const string DeviceName = "SC20100DEVLoRa"; #endif #if TINYCLR_V2_FEZDUINO const string DeviceName = "FezduinoLoRa"; #endif #if ADDRESSED_MESSAGES_PAYLOAD const string HostName = "LoRaIoT1"; #endif const double Frequency = 915000000.0; byte MessageCount = System.Byte.MaxValue; #if TINYCLR_V2_SC20100DEV Rfm9XDevice rfm9XDevice = new Rfm9XDevice(SC20100.SpiBus.Spi3, SC20100.GpioPin.PA13, SC20100.GpioPin.PA14, SC20100.GpioPin.PE4); #endif #if TINYCLR_V2_FEZDUINO Rfm9XDevice rfm9XDevice = new Rfm9XDevice(SC20100.SpiBus.Spi6, SC20100.GpioPin.PB1, SC20100.GpioPin.PA15, SC20100.GpioPin.PA1); #endif rfm9XDevice.Initialise(Frequency, paBoost: true, rxPayloadCrcOn: true); #if DEBUG rfm9XDevice.RegisterDump(); #endif rfm9XDevice.OnReceive += Rfm9XDevice_OnReceive; #if ADDRESSED_MESSAGES_PAYLOAD rfm9XDevice.Receive(UTF8Encoding.UTF8.GetBytes(DeviceName)); #else rfm9XDevice.Receive(); #endif rfm9XDevice.OnTransmit += Rfm9XDevice_OnTransmit; Thread.Sleep(10000); while (true) { string messageText = string.Format("Hello from {0} ! {1}", DeviceName, MessageCount); MessageCount -= 1; byte[] messageBytes = UTF8Encoding.UTF8.GetBytes(messageText); Debug.WriteLine($"{DateTime.Now:HH:mm:ss}-TX {messageBytes.Length} byte message {messageText}"); #if ADDRESSED_MESSAGES_PAYLOAD rfm9XDevice.Send(UTF8Encoding.UTF8.GetBytes(HostName), messageBytes); #else rfm9XDevice.Send(messageBytes); #endif Thread.Sleep(10000); } } private static void Rfm9XDevice_OnReceive(object sender, Rfm9XDevice.OnDataReceivedEventArgs e) { try { string messageText = UTF8Encoding.UTF8.GetString(e.Data); #if ADDRESSED_MESSAGES_PAYLOAD string addressText = UTF8Encoding.UTF8.GetString(e.Address); Debug.WriteLine($@"{DateTime.Now:HH:mm:ss}-RX From {addressText} PacketSnr {e.PacketSnr} Packet RSSI {e.PacketRssi}dBm RSSI {e.Rssi}dBm = {e.Data.Length} byte message ""{messageText}"""); #else Debug.WriteLine($@"{DateTime.Now:HH:mm:ss}-RX PacketSnr {e.PacketSnr} Packet RSSI {e.PacketRssi}dBm RSSI {e.Rssi}dBm = {e.Data.Length} byte message ""{messageText}"""); #endif } catch (Exception ex) { Debug.WriteLine(ex.Message); } } private static void Rfm9XDevice_OnTransmit(object sender, Rfm9XDevice.OnDataTransmitedEventArgs e) { Debug.WriteLine($"{DateTime.Now:HH:mm:ss}-TX Done"); } } }
The addressing support is pretty basic as my goal was a library that I could extend with optional functionality like tamper detection via signing and privacy via payload encryption, mesh network support etc.
The library works but should be treated as late beta.
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