RE: [beagleboard] where is capemgr?

2017-07-11 Thread Clark Briggs 
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

-Original Message-
From: Robert Nelson [mailto:robertcnel...@gmail.com] 
Sent: Tuesday, July 11, 2017 12:37 PM
To: Beagle Board <beagleboard@googlegroups.com>
Cc: Clark Briggs <clark.bri...@ata-e.com>
Subject: Re: [beagleboard] where is capemgr?

On Tue, Jul 11, 2017 at 2:28 PM,  <clarkbriggs...@gmail.com> wrote:
> 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.

Regards,

--
Robert Nelson
https://rcn-ee.com/

-- 
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Re: [beagleboard] where is capemgr?

2017-07-11 Thread Robert Nelson 
On Tue, Jul 11, 2017 at 2:49 PM, Clark Briggs  wrote:
> 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:

https://github.com/RobertCNelson/dtb-rebuilder/blob/4.4-ti/src/arm/am335x-boneblack-roboticscape.dts#L19

Change:

#include "am335x-bone-common-no-capemgr.dtsi"

to:

#include "am335x-bone-common.dtsi"

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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Re: [beagleboard] where is capemgr?

2017-07-11 Thread Robert Nelson 
On Tue, Jul 11, 2017 at 2:28 PM,   wrote:
> 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.

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
For more options, visit http://beagleboard.org/discuss
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