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UJA1169 on S32k144

Question asked by Koorosh Hajiani on Oct 6, 2017
Latest reply on May 29, 2019 by sumit narang


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.