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I am using a SAM D09 uc and want to implement SPI with hardware SS. I cannot see from the documentation how SS is driven high again. It states that after every frame the SS is returned to high. Does this mean every 8-bits. I need to send around 64 bits while SS is low
This has nothing to do with Keil or ARM - you need to go to Microchip for queries & clarifications on their parts & documentation:
https://community.atmel.com/atmel-smart-arm-based-mcus
For understanding what belongs to ARM, and what belongs to the chip maker (Microchip, in this case), see:
community.arm.com/.../158950