Defines the custom SPI transfer message.
Whether to switch off the CS before the next transfer when the current transfer has been completed. 1 indicates to switch off the CS; 0 indicates to switch on the CS.
Delay (in microseconds) before starting the next transfer. The value 0 indicates there is no delay between transfers.
Length of the read and write buffers. The read buffer and the write buffer have the same length.
Address of the read buffer
Current message transfer speed
Address of the write buffer