piclist 2002\12\18\231209a >
Thread: SPI slave
www.piclist.com/techref/io/serial/spis.htm?key=spi
face picon face BY : Sean Breheny email (remove spam text)



Hi all,

I'm looking for info on how to use the AVR's SPI hardware in slave mode.
Specifically, how do you begin a transfer? How do you tell it to "reset"
and receive bit 0 on the next clock transition? How do you determine when
it has finished receiving 8 bits? The info in the datasheet (I'm using
the AT90S8535) is geared toward master mode and it doesn't seem to
clearly state how this would work in slave mode.

Thanks!

Sean

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