I’m trying to get quadrature encoder signals into my new Beaglebone Black board.
I have a Rev. C BBB running:
Linux beaglebone 3.8.13-bone47 #1 SMP Fri Apr 11 01:36:09 UTC 2014 armv7l GNU/Linux
*** 1st question:
I understand that recent Debian distributions on the BBB have eQEP drivers included.
Does the above version have the eQEP drivers?
If not, which version do I need?
*** 2nd question:
I copied the pre-compiled dtbo files from here:
to /lib/firmware as explained in the readme file.
The files I copied are:
Problem is when I issue this command:
root@beaglebone:/sys/devices/bone_capemgr.9# echo bone_eqep2b > /sys/devices/bone_capemgr.9/slots
-bash: echo: write error: Invalid argument
you can see it gives me an invalid argument error.
And I don’t see the slots file change to indicate that it has loaded the eQEP driver.
This is what I see in the slots file:
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
Do you know what I’m doing wrong?