bobcousins:
The SPI peripheral in the SAM3X can do 9 bit transfers, but this is not supported by the SPI library. It would be very easy to add though.
Exactly, in the SAM3X datasheet, on page 679, you can read :
– 8- to 16-bit Programmable Data Length Per Chip Select
My question was on the implementation of this functionality in the new arduino framework.
In the documentation, nothing is said about this but perhaps the doc isen't up to date...
I will see to add it myself.
Thank you.