Autofocus function does not work due to i2c-7 problem

[khanhtrannnn]

As Autofocus.py is run by executing the following command, I think i2c-7 should be installed.

python Autofocus.py -i 7

where 7 is the i2c interface for Nvidia Jetson Nano B01.

However, when I use the command

sudo i2cdetect -r -y 7

It shows: "Error: Could not open file /dev/i2c-7' or /dev/i2c/7’: No such file or directory.
Plus, this is the output when I list all i2c by using the command

ls /dev/i2c*

/dev/i2c-0 /dev/i2c-1 /dev/i2c-101 /dev/i2c-2 /dev/i2c-3 /dev/i2c-4 /dev/i2c-5 /dev/i2c-6 

As you can see, there’s no i2c-7 in the system.

Does anyone know how to install i2c-7? Thank you!

[Edward]

@khanhtrannnn

Are you using the 4GB or 2GB version?

[khanhtrannnn]

I’m using 4 GB 64-bit LPDDR4 25.6 GB/s one

[Edward]

@khanhtrannnn

4GB is supposed to be 7 and 8, but you don’t have either, is your base plate official?

Our i2c-7 is defined according to the official base plate. If it is another third-party base plate, the i2c of the defined camera may be different.

[khanhtrannnn]

It’s official. NVIDIA Jetson Nano P3450.

[Edward]

@khanhtrannnn

Take a look at the dmesg report

dmesg | grep imx477

Sorry, I’m off work now, I can look at it for you tomorrow, if you have any information, please leave a message and I’ll check it out.

[khanhtrannnn]

This is the output

[Edward]

@khanhtrannnn

You can try

python Autofocus.py -i 6

Your case is special, can you take a picture of the overall hardware connection?