I am trying yo communicate with the UJA1169 through SPI with S32K146 uC. As the datasheet of the UJA1169 says, I have a function sending buffers of 16 bits to allow me to read one register of the SBC. Problem is that, I can't see the Chip Select line being activated (falling edge to start, rising edge to end transmission).
My question is, where could I configure the chip select line to behave as it indicates above? Is this possible? Or should I configure manually the GPIO associated to the Chip Sel line in order to behave like this?
I attach one picture
Thank you in advance,
I attach one picture of this
(In the picture, starting from above):
I need to mention that we have SDK UJA116x driver.
You can refer to the sbc_uja116x_s32k144 example.
I compared the signal that you attached with the UJA1169 datasheet.
Bit sampling is performed on the falling edge of the clock (SBC datasheet) and on the rising edge of the clock (your configuration).
Please change it accordingly.