I have a question about the SPItoFTDI example (details attached). Basically, I'm wondering why/how the xfr struct
gets changed after a transfer? At least, I found that when using a prologue, if I don't explicitly re-set, to the same values, the fields xfr.pPrologue and xfr.PrologueSize, that the second send doesn't work. I want to make sure I completely understand how the SPI's API works, because I've been chasing this problem for many weeks.