I’m trying to interface TX2 with a PWM controller over I2C, and the board is not being detected using sudo i2cdetect -r -y 1.
I’ve confirmed the PWM controller is correctly powered, and an oscilloscope shows that the I2C bus is outputting… something… when I run i2cdetect, but what should I be looking for? How do I debug that output that is showing up on the bus, and confirm whether it’s correct? How can I tell whether there is something coming back from the PWM controller? Is there some SYN/ACK pattern I can look for?