I search a way to put the SPI pins in high impedance mode. Does the function CyU3PSpiDeInit() put all SPI pins of the FX3 in high impedance mode or is there another way to do that?
the SpiDeInit function may put the pins into high impedance but if not and you want to do it safely, then you can additional use after the SpiDeInit the GpioOverride function to override each SPI pin as an input. That should then really do what you like to have. To re-activate the SPI you may reinitialize the iomatrix, that can be a bit tricky.
I used CyU3PSpiDeInit() and checked the SPI pins then. They are in fact high impedant. So i'm happy with this solution.
Thanks for your help Lumpi.