Try to connect the jetson nano with lepton 3.5 Camera with the breakboard v2.0

i connect the Jetson nano and the lepton 3.5 Camera like in this link

but he cant find the interface of this camera.
I did everythink the same like in this link

Verify the SPI interface by the loopback test to make sure the SPI pin config.
Connect the pin19/21 as loopback and run the spidev_test for testing.

I want to check the i2c interface and that one he cant find with command i2cdetect -y -r 0