namespace Unosquare.RaspberryIO.Abstractions { /// /// Interfaces a SPI buses on the GPIO. /// public interface ISpiChannel { /// /// Gets the standard initialization file descriptor. /// anything negative means error. /// /// /// The file descriptor. /// int FileDescriptor { get; } /// /// Gets the channel. /// int Channel { get; } /// /// Gets the frequency. /// int Frequency { get; } /// /// Sends data and simultaneously receives the data in the return buffer. /// /// The buffer. /// The read bytes from the ring-style bus. byte[] SendReceive(byte[] buffer); /// /// Writes the specified buffer the the underlying FileDescriptor. /// Do not use this method if you expect data back. /// This method is efficient if used in a fire-and-forget scenario /// like sending data over to those long RGB LED strips. /// /// The buffer. void Write(byte[] buffer); } }