S32K396 flexio SPI example not working

[Henrik-Wires]

Cannot get the FlexIO SPI example Dspi_Flexio_Ip_Transfer_S32K396 to work. I have wired everything up as per the included description.txt but the FlexIO transaction never completes and the example is stuck at continiously checking Flexio_Spi_Ip_GetStatus().

Using Design Studio 3.6.3 (with 3.6.4 update) and RTD 6.0.0.

[Henrik-Wires]

The other Spi_Transfer_S32K396 works, and is more closely aligned with what we are doing. So not a blocker for us.

[Henrik-Wires]

But not fully. Master do not receive data from slave. Will investigate further on monday.

[Henrik-Wires · Accepted solution]

Found the culpit. PTB28 is not wired to the MB by default on S32K396-BGA-DC1. Instead it is wired to the PHY connector.

Changing pinout to using PTF0-3 for LPSPI2 works much better.

And I am guessing this is also why the other example does not work as there is a lot of PHY pins not connected to the MB connectors.

It is almost as if you have selected pinouts to make life extra hard in using your tools.