Xamarin-NRF-DFU

Simple plugin for Xamarin forms which supports Secure DFU OTA Bluetooth update.

Platforms

iOS, Android, and basically any other what is supported by aritchie BLE plugin

Prerequesites

• Bluetooth LE plugin by aritchie https://github.com/aritchie/bluetoothle
• Nordic semiconductor device

Features

• Upload firmware for NordicSemiconductor devices supporting Buttonless Secure DFU without bonds

Usage

Include

using Plugin.XamarinNordicDFU;

Initialize

var dfu = new DFU();
DFUEvents.OnFimwareProgressChanged = (float progress, TimeSpan elapsed) =>
{

};
DFUEvents.OnSuccess = (TimeSpan elapsed) =>
{

};
DFUEvents.OnError = (string error) =>
{

};
DFUEvents.OnResponseError = (ResponseErrors error) =>
{

};
DFUEvents.OnExtendedError = (ExtendedErrors error) =>
{

};

Run [device is IDevice from bluetoothle]. Start command accepts Two streams - fimware stream xxx.bin and init packet stream xxx.dat. These files are usually found in distribution .zip package what can be created using nrfutil More info about distribution packages

var assembly = System.Reflection.Assembly.GetExecutingAssembly();

#if __IOS__
        var currentOS = "iOS";
#endif
#if __ANDROID__
        var currentOS = "Droid";
#endif
string firmwarePacketPath = String.Format("MyHelloProject.{0}.FW.{1}", currentOS, "nrf52832_xxaa.bin");
string initPacketPath = String.Format("MyHelloProject.{0}.FW.{1}", currentOS, "nrf52832_xxaa.dat");


Stream FirmwarePacket = assembly.GetManifestResourceStream(firmwarePacketPath);
Stream InitPacket = assembly.GetManifestResourceStream(initPacketPath);
            
await dfu.Start(device, FirmwarePacket, InitPacket);

TODO

• Nuget package
• Other firmware upgrade possibilities. Other than buttonless without bonds
• Device advertised names now should be unique while updating DFU. Should add device name change for buttonless dfu.

License

MIT

Contributors