/// <summary>
/// This is the low level call to do a control transfer at the Android level. This can be overriden in the contructor
/// </summary>
private static Task <TransferResult> PerformControlTransferAndroid(
UsbDeviceConnection usbDeviceConnection,
SetupPacket setupPacket,
byte[] buffer = null,
int?timeout = null,
CancellationToken cancellationToken = default)
=>
//Use Task.Run so we can pass the cancellation token in instead of using the async control transfer method which doesn't have a cancellation token
Task.Run(() =>
{
var bytesTransferred = usbDeviceConnection.ControlTransfer(
setupPacket.RequestType.Direction == RequestDirection.In ? UsbAddressing.In : UsbAddressing.Out,
setupPacket.Request,
setupPacket.Value,
setupPacket.Index,
buffer,
setupPacket.Length,
timeout ?? 0
);
return(new TransferResult(buffer, (uint)bytesTransferred));
}, cancellationToken);
private int SendAcmControlMessage(int request, int value, byte[] buf) => _connection.ControlTransfer((UsbAddressing)UsbRtAcm, request, value, 1, buf, buf?.Length ?? 0, 100);
