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.