/// <summary>
/// Flush data to the port
/// </summary>
/// <param name="force">Whether to flush all data to the port, even if it doesn't appear to have changed.</param>
/// <returns>An awaitable task that completes when finished</returns>
public async Task FlushAsync(bool force = false)
{
if (!CurrentValue.SequenceEqual(lastValues) || force)
{
if (Parent != null)
{
await Parent.FlushAsync().ConfigureAwait(false);
}
else
{
using (await lockObject.LockAsync().ConfigureAwait(false))
{
// build the byte array to flush out of the port
var bytes = new List <byte>();
var reversed = Children.Reverse().ToList(); // bytes are shuffled out last-device-first
reversed.Add(this); // add ourselves
foreach (var shift in reversed)
{
var shiftBytes = shift.CurrentValue;
bytes.AddRange(shiftBytes.Reverse());
}
await spiDevice.SendReceiveAsync(bytes.ToArray(), SpiBurstMode.BurstTx).ConfigureAwait(false);
}
}
CurrentValue.CopyTo(lastValues, 0);
}
}