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SPI gets out of sync

Question asked by wagner.tobias on Dec 7, 2017
Latest reply on Dec 8, 2017 by wagner.tobias


I have a problem with the STM32H743.

I have a pluggable SPI connection and the STM32H743 works as a Slave in receive mode.

When I pull and plug the connection the NSS, CLK and Data connections toggles and I get some random data.

After I plug the cable the NSS signal doesn't resynchronises the transmission and I get some Bits from the old transmission and the transmission before.

How can I activate the resynchronisation of the SPI connection with the NSS signal?

I think the same problem will appear when the slave misses a clock or count a clock to much from an disturbance.

Best reguards