Hi
I’m using the mipi adapter board provide by leopard imaging and trying to hook up my own camera board. When I’m loading my driver it fails at the point where it is trying to get an i2c acknowledge from my camera. This is not suprising as I haven’t implemented the complete i2c stack on the camera side. However, in order to better understand, I hooked the i2c signals to a logic analyzer and i wanted to see if the jetson is actually doing the right thing. However, I observed unexpected beahviour. SDA is high and SCL is always low. This makes me wonder about some basic requirements of the interface. Is the logic level of the vi-i2c (i believe i’m using channel 0) 1.8V? Do I require external pullup resistors? I coulnd’t find any pullup resistors in the schematics of the carrier board nor the camera board so I was expecting that it uses some sort of internal pullup resistors…