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UJA1169 on S32k144

Question asked by Koorosh Hajiani on Oct 6, 2017
Latest reply on Oct 25, 2017 by Razvan-nicolae Tilimpea


I've been talking to UJA1169 chip on S32K144EVAL board via SPI and been able to R/W to a few registers.

 I try to write to CAN control register (address 20h) the value 0x01 or 0x02 (CMC) to make CAN active

but when I read Transceiver status register (0x22) Bit 7(CTS) remains 0.

I'm pretty sure my SPI frames are sent and received correctly.

I was wondering the fact that I am not connected to any CAN bus may be the culprit here.

Could that be it?


Please ,I need some answers.