After watching the great progress, I started in. I have the 3/19/2017 latest image with apt-get upgrades running on a Rev C BBB with a Rev C Robotics Cape. All in all, the process worked well. But I can’t find capemgr. I went looking for it because I want to access analog I/O and other stuff. Recent emails from here-ish say capemgr is supposed to be in /sys/devices/platform but not. To get analog I/O, I put “cape_enable=bone_capemgr.enable_partno=BB-ADC” in uEnv.txt, but no /sys/bus/iio.
some info debian@sim15:~$ uname -a
Linux sim15 4.4.54-ti-r93 #1 SMP Fri Mar 17 13:08:22 UTC 2017 armv7l GNU/Linux debian@sim15:~$ cat /etc/dogtag BeagleBoard.org Debian Image 2017-03-19 debian@sim15:~$ systemctl status capemgr.service
● capemgr.service - Cape Manager Service
Loaded: loaded (/lib/systemd/system/capemgr.service; enabled; vendor preset: enabled)
Active: inactive (dead) since Tue 2017-07-11 18:46:54 UTC; 32min ago
Process: 4598 ExecStart=/bin/sh /opt/scripts/boot/capemgr.sh (code=exited, status=0/SUCCESS)
Main PID: 4598 (code=exited, status=0/SUCCESS)
Jul 11 18:46:53 sim15 systemd[1]: Starting Cape Manager Service…
Jul 11 18:46:54 sim15 systemd[1]: Started Cape Manager Service.
The BB + Robotic Cape boots a special device tree binary, thus capemgr
is disabled. the librobotic library expects this combination to have
things setup a certain way, as it utilzes /dev/mem to access the
gpio/adc/etc.
As I don't have that cape, and it's still not listed for sale, this
isn't going to change anytime soon.
Robert,
Thanks.
I have spent a good bit of time with the robotics cape through working with James Strawson. He has constructed a very good set of aps and library for newbies to use. Those are his main constituents, IMHO.
I have been using his board without his code base with his help. He and I differ on certain value judgements, like using mmap for I/O access. So...
If I'm not using his libraries and want to start capemgr and manually export and use BBB I/O and robotics cape I/O, how to do that?
I tried using systemctl to start capemgr.service but don't see any results but don't know where its gripes would get posted.
Clark
Robert,
Thanks.
I have spent a good bit of time with the robotics cape through working with James Strawson. He has constructed a very good set of aps and library for newbies to use. Those are his main constituents, IMHO.
I have been using his board without his code base with his help. He and I differ on certain value judgements, like using mmap for I/O access. So...
Yeah, i'd like to rip all those mmap calls out of the library, and
just access them thru kernel userspace.
If I'm not using his libraries and want to start capemgr and manually export and use BBB I/O and robotics cape I/O, how to do that?
I tried using systemctl to start capemgr.service but don't see any results but don't know where its gripes would get posted.
It's not a service file, it's the device tree binary:
