AnsweredAssumed Answered

Is the reception working with the SPI on the FRDM-K66?

Question asked by Benjamin Heder on Aug 3, 2017
Latest reply on Aug 23, 2017 by Benjamin Heder

Hello everyone,


I am working on the FRDM-K66 with MCUXpresso new release.

I have been working on the SPI communication for a long time and only the master emission works.

The master and slave receptions don't work with my code. Besides the reception function on SDK examples (polling and interrupt) doesn't seem to work too. With Kinetis ans MCUXpresso (which SPI1 can't be monitored).

Furthermore, RX FIFO registers (SPIx_RXFRn) are always empty especially when it should receive incoming data.


The second issue is the slave transmission. The TX FIFO registers are full during slave transmission but no signal appears on the scope when its channel is plugged on the MISO once the command line is executed (write in PUSHR_SLAVE).


Just below here is a screenshot of the SDK DSPI polling example from MCUXpresso.


Do you have any idea for these issues?

I also understood that the SPI1 monitoring issue come from MCUXpresso.

Does someone know when it will be resolved?

Is the reception working with the SPI on the FRDM-K66 for master and slave or not for the moment?


I need to know because I have already spent a lot of time on this topic for no conclusive results.


Best regards,