TX2 I2C SCL working as expected but SDA stays high


I’ve connected a jetson tx2 with a orbitty carrrier board to an arduino with i2c. This setup worked great, but now after some updates i2c isnt working anymore:

If I analyse the signal with the oscilloscope i can see that scl is working but SDA is high all the time when using sudo i2cdetect -y -r 0

I currently think the chip could be damaged, because ive never seen this behaviour before.

Has someone an idea what might be the failure?

Thanks :)

Hi, johannes, if you are sure about that all configurations are same as previous, then it might be a hardware broken issue. Also you can set the SDA pin as GPIO if possible, and then check if can configure it to low successfully. If it works, the pin should be no problem.