I have been trying for WEEKS to create my own custom cape overlay based on
BB-BONE-AUDI-02-00A0.dtbo.
I've only tested this on Bone Debian 8.7 lxgt, not the latest (I think is
9.5). I had an issue getting the cape to be loaded by bone_capemgr. Even
rebuilding using the "make" in /opt/source/bb.org-overlays. I'm sure
further digging in the forum would have given me the answer eventually.
Here's the steps REQUIRED, and I'll explain the piece I was missing:
1. Connect to your Beaglebone Black (Obviously).
2. Create your .dts file and put it at /opt/source/bb.org-overlays/src/arm
{Phew, long path. I know}
3. Change directory:
$ cd /opt/source/bb.org-overlays/
4. Run the following in Terminal:
$ sudo make -d src/arm/<name of new cape overlay>.dtbo
IF you get clock skew, run: $ sudo touch
src/arm/* Redo the make.
$ ./install.sh (THIS IS THE PART I MISSED FOR
WEEKS, it is required as it adds all the capes .dtbo to:
/boot/initrd.img4.4.54-ti-r93, that have to match the cape being used at
boot by the bone_capemgr)
5. Make changes in /boot/uEnv.txt,
specifically cape_enable=bone_capemgr.enable_partno=<your cape name here
w/no .dtbo> example: BB-BONE-AUDI-02 Full file name
is: BB-BONE-AUDI-02-00A0.dtbo
6. Reboot and see if changes are implemented. Here's some helpers:
$ dmesg (shows bootup with overlay info and
any issues)
$ i2cdetect -r <i2c bus> (shows all addresses on that bus. i2c bus =
0, 1, or 2)
$ i2cdetect -l (Shows all i2c busses loaded)
$ ls /dev/ (will show all devices and comms
like SPI, I2C, USB that are active)
$ sudo /opt/scripts/tools/version.sh (shows overlays and capes
active with additional info)
I'm going to try and perform the same thing on Bone Debian 9.5 and see if I
can get it working. I may have to update the script to change 4.4.54 to
4.14.xx.
Please feel free to chime in or ask any questions. I just wanted to share
my findings so far.
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