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SPI Slave Select as GPIO

Question asked by Isaac Pilli on Feb 13, 2019
Latest reply on Feb 13, 2019 by Mark Butcher

MKE02Z16VFM4 runs SPI0 as a master on PTB2, PTB3 and PTB4 (SPI0PS = 0).

PTB5 is not used as part of the SPI0 functionality (MODFEN = 0 and  SSOE = 0) and configured as a GPIO output.

However, the pin always stuck on '1' and does not change its state like any other GPIO pin.

Can anyone comment whether PTB5 is actually operating as a general purpose output while PTB2,3,4 are operating as SPI0 master?