BBAI_PinMuxing Guild

To operate Pinmux procedure, Open a terminal on BBAI and do these following steps:

1. Change directory to wherever you want to clone the next line to

$ cd (directory)

2. Clone BeagleBoard-DeviceTrees from github

$ git clone https://github.com/beagleboard/BeagleBoard-DeviceTrees -b v4.14.x-ti

3. Create and custom the device tree for beaglebone ai

$ nano BeagleBoard-DeviceTrees/src/arm/am5729-beagleboneai-custom.dts (we write custom device tree for bbai here, see example to active SPI)

$ cd BeagleBoard-DeviceTrees  
$ make src/arm/am5729-beagleboneai-custom.dtb  

4. Add to uboot

$ sudo cp src/arm/am5729-beagleboneai-custom.dtb /boot/dtbs  
$ sudo nano /boot/uEnv.txt #(configure: dtb=am5729-beagleboneai-custom.dtb)  
$ sudo reboot  

BBAI_PinMuxing Example (SPI active)

This BBAI compatible dts file active 2 spidev0 and spidev1 for bbai

BBAI_PinMuxing Check

Show pin configuration (aka the pinmux) - note the pin IDs in column 2 are off due to architecture differences with the BBB

$ /opt/scripts/device/bone/show-pins.pl⏎

or

$ show-pins⏎

If you have error with this command, do

$ sudo apt install libinline-files-perl

Then try again