I tried to make my ECU to communicate with MC33771 via SPI directly. Because TPL communication need more ICs and two SPI channels.
But it seems failed and MC33771 didn't response to ECU.(For test, I send set ID command to MC33771 every 1s)
I measured CLK, SDO, CS signals' waveform, they were correct.
Here my questions:
- Is there any special setting for MC33771 if want to use SPI?
- Does anyone have demo code?