SCLK / SPI_CLK as DIO / GPIO on cRIO

[markfrench]

Hello everyone,

we want to build a custom module and were wondering whether it is possible to use the SCLK/SPI_CLK pin (#11 on cRIO connector) on the cRIO connector as a DIO/GPIO.
Is this pin shared by all modules or per cRIO module?
If i interpret the documentation right, the SCLK pin is driven high when entering normal operation mode. Is it afterwards possible to drive this pin to a constant 0 or 1 from within labview?

Sincerely
Mark French

[Gevor]

I believe it is possible. However, as per the documentation it is not recommended. 

https://www.ni.com/pdf/manuals/375951b.pdf page 41.