Newly Installed BeagleY-AI with Kernel 6.1.x and Finding i2c-2 Addresses/New to Me

General Discussion
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After all this time, this may sound silly but…

  1. Do I need to have an overlay if using a PCA9685 chipset on /dev/i2c-1?
  • First off, I do not believe I need the overlay. I will test it with i2cdetect -y -r 1.
  • Secondly, I will need to alter some source code for Donkey Car (I think)…
  1. The reason I bring up an overlay here…
  • I am using the Servo Cape and it has an address but I am using it on another address line.
  • Donkey Car seems to handle i2c commands well enough now.

Seth

P.S. Right now, right now, I am adding some commands in python3 to handle a library that ports a USB CAM or CV CAM (Donkey Car jargon stuff) for training and managing/starting Donkey Car on the command line.

update

I, and this is without testing, was thinking talking directly to the PCA9685 is possible. I also thought the i2c peripheral talk and back talk is possible with the Servo Cape (which is needed for the PCA9685). I will using i2c-1 and/or i2c-2 via smbus2 or smbus solely (I think). This depends on Donkey Car and their libraries… Anyway, I think it works because I know how sometimes people forget to handle specifics on beagleboard.org Capes and peripheral usage cases. I really dislike saying it that way but if it works, it works and I can use it.

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I call this a neat library. It is neat because they made it so commands given to the peripheral, Web Cam or whatever, at an address can then become acted upon. So for instance, I run the initial command.

Then, via learning techniques, the auto mechanism takes hold and allows movement in a coordinated way via whatever it has learned. Now, how well does it work? No clue as of yet.

I am a bit slow to get around to pushing out things and posts these days.

Seth

P.S. It may just work!

3

If the I2C channel is already showing up in Linux, you do not need to do anything further.

Sub-devices are really only needed if you plan to attach a kernel driver to said device.

Nothing prevents you from claiming the device yourself.

1 Like
4

I figured this much. I will claim the device and keep testing.