GSoC Project - Beagle BSP Projects
Ahamed Husni
ahamedhusni73 at gmail.com
Sat May 1 21:38:58 UTC 2021
Hi all,
My project proposal
https://docs.google.com/document/d/1CN3ri7g6NJeFPb5h8y4smr1aziGWyXbiiXUsFMhdUu4/edit?usp=sharing
I tried to set up the JTAG Environment for the Beaglebone Black.
But I couldn't find the hardware anywhere in my country (Sri Lanka).
I tried to,
1. Find TI XDS Debuggers
2. Find a TI Launchpad so we can isolate and use the debugger in it.
3. Use RPi as a debugger using OpenOCD
I looked for the debuggers in major electronic shops, embedded systems
related companies,
university labs and etc. But couldn't find them.
Also these debuggers are expensive. When ordering online the shipping
charges are also high.
So I can't guarantee that I can set up JTAG.
Can we use RTEMS Libdebugger until we figure out the JTAG?
Can we make a fallback plan for this project? If yes, what sorts of changes
should be made?
Best regards,
Husni.
On Fri, Apr 2, 2021 at 6:16 PM Christian Mauderer <oss at c-mauderer.de> wrote:
>
>
> On 02/04/2021 08:36, Ahamed Husni wrote:
> > > Yes, this seems like an area that can be chipped away at,
> with a
> > > strong plan of activities. My concern would be whether it
> is about
> > > writing code or not?
> > >
> > >
> > > After completing the above milestones, if we have more time I
> can start
> > > to work on
> > > the Mass storage support.
> > >
> >
> >
> > I would suggest to put _more_ into the proposal and make it clear
> that
> > the later points depend on whether there is enough time or not.
> >
> > @Gedare: The time and effort for that project is really hard to
> > estimate
> > in my point of view. Do you have an idea how we could handle that?
> >
> >
> > So do I have to include mass storage support into the project schedule or
> > should I prepare the schedule for Ethernet, Serial and add the list of
> > possible advances and say that I'll work on them if there is enough time?
>
> I would suggest to include it. I'm quite sure that there is enough time.
>
> >
> > Most likely we would have to put some further open points at the end
> of
> > that because like I said: Depending on how well it works you might
> need
> > anything between a day and three weeks to get CDC Ethernet running.
> > From
> > my first guess, it's maybe a week.
> >
> > Note that I would expect that you will need a debugger and the RTEMS
> > event recording for this kind of project.
> >
> >
> > CDC Serial should be only a small step as soon as CDC Ethernet is
> > running.
> >
> >
> > I don't have a JTAG debugger now. I'll get that set up asap.
> >
> >
> > > USB OTG would be a nice area. But that will be less writing a
> driver
> > > for
> > > Beagle but more finding out how that works with libbsd and
> finding a
> > > good way to configure it. I once put a few hours into it
> didn't take
> > > too
> > > much time till a PC detected an USB device (see
> > >
> https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce
> > <https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce>
> > >
> > <https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce
> > <https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce>>).
> > > Basically it's about importing the "usb_template" stuff and
> finding a
> > > way to configure it in libbsd.
> >
> >
> > I'm trying to build and test this branch. I had trouble with building
> > the libbsd.
>
> The branch is very old. Most likely it won't build with a current
> toolchain and a current RTEMS. You might want to try to rebase the last
> two patches onto an up to date libbsd.
>
> > So I started to build the tools and kernel from scratch with the RSB
> > master, using
> > beaglebone black bset. It gives me the following error.
> > Error log: https://pastebin.com/NYZRej1B <https://pastebin.com/NYZRej1B>
> >
> > Build command
> >
> > ../source-builder/sb-set-builder --log=beagle.txt
> > --prefix=$BASE/rtems/6 bsps/beagleboneblack.bset
>
> For development I would suggest to build only the toolchain using RSB.
> After that you should build the BSP and libbsd manually. You will have
> to recompile the BSP and libbsd quite often and it's a lot more
> convenient to do that without touching RSB every time.
>
> I would suggest to use some simple scripts or a Makefile for that.
> Something like
>
> https://gitlab.com/c-mauderer/rtems-bbb/-/blob/master/Makefile
>
> Note that the repo containing that Makefile is no official one and it is
> unstable. Most of the time I use it for testing stuff.
>
> >
> > What would be the steps to configure the USB OTG driver from libbsd to
> BBB.
> > I would like to try it out. Please guide me on this.
>
> I think that's most of the problem of the GSoC ;-)
>
> Basically it's the following steps:
>
> - Importing the relevant parts (should be the usb_template stuff) from
> FreeBSD into libbsd. That's basically what the first commit on the
> branch does. Take a look at the CONTRIBUTING.md file in libbsd for
> details about the import process:
> https://git.rtems.org/rtems-libbsd/tree/CONTRIBUTING.md#n158
>
> - Enable them for Beagle. That's the second commit on the branch.
>
> - Somehow configure the USB OTG stuff. Like I said: That's the tricky
> part. It has something to do with the usb_temp_init functions. But I
> didn't manage to get it working in an hour or so and stopped trying
> after that. So finding out how to configure and set up the stuff will be
> part of your Project.
>
> Best regards
>
> Christian
>
> >
> > Best regards,
> >
> > On Fri, Mar 26, 2021 at 8:17 PM Christian MAUDERER
> > <christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>> wrote:
> >
> > Hello Ahamed,
> >
> > Am 26.03.21 um 15:31 schrieb Ahamed Husni:
> > > USB OTG would be a nice area. But that will be less writing a
> > driver
> > > for
> > > Beagle but more finding out how that works with libbsd and
> > finding a
> > > good way to configure it. I once put a few hours into it
> > didn't take
> > > too
> > > much time till a PC detected an USB device (see
> > > https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce
> > <https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce>
> > >
> > <https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce
> > <https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce>>).
> > > Basically it's about importing the "usb_template" stuff and
> > finding a
> > > way to configure it in libbsd.
> > >
> > > I think that topic would have to be a bit of an open one: You
> > might
> > > work
> > > only a day on it and have a working CDC Ethernet afterwards
> > or you can
> > > need weeks for that. So you should add an open list of
> possible
> > > advanced
> > > targets. An OTG device can be:
> > >
> > > - Ethernet
> > > - Serial port
> > > - Mass storage
> > > - Keyboard / Mouse
> > > - Modem
> > > - Audio
> > > - ...
> > >
> > > The simplest one will most likely be Ethernet followed by
> serial
> > > port. I
> > > would add some of the others (like mass storage) as an
> > extended targets.
> > >
> > > Best regards
> > >
> > > Christian
> > >
> > >
> > > USB OTG would allow more extended capabilities for the beagle
> board.
> > > To work on the USB OTG devices, what would be the best way?
> > > What I understood from what Christian says is,
> > >
> > > 1. Finding out how USB OTG works with libbsd and finding a
> > > way to configure it for the beagle.
> > > 2. Work on CDC Ethernet
> > > 3. CDC Ethernet - Example application & Documentation
> > > 4. Work on Serial over USB
> > > 5. Serial over USB - Example application & Documentation
> > >
> > > Am I right?
> >
> > Most likely we would have to put some further open points at the end
> of
> > that because like I said: Depending on how well it works you might
> need
> > anything between a day and three weeks to get CDC Ethernet running.
> > From
> > my first guess, it's maybe a week.
> >
> > Note that I would expect that you will need a debugger and the RTEMS
> > event recording for this kind of project.
> >
> >
> > CDC Serial should be only a small step as soon as CDC Ethernet is
> > running.
> >
> > Mass storage depends on the current implementation for that in
> FreeBSD.
> > It might could be an interesting part.
> >
> > >
> > > Would implementing Ethernet and Serial solve the problem of using
> > TTL
> > > converters
> > > when working on RTEMS in Beagle for the developers?
> > >
> >
> > Depends on the application. For those who want to write an
> application,
> > a CDC Serial device would be a nice alternative. For those who want
> to
> > develop drivers or RTEMS itself: Very unlikely that CDC Serial is
> > enough
> > for that.
> >
> > > Yes, this seems like an area that can be chipped away at,
> with a
> > > strong plan of activities. My concern would be whether it is
> > about
> > > writing code or not?
> > >
> > >
> > > After completing the above milestones, if we have more time I can
> > start
> > > to work on
> > > the Mass storage support.
> > >
> >
> > I would suggest to put _more_ into the proposal and make it clear
> that
> > the later points depend on whether there is enough time or not.
> >
> > @Gedare: The time and effort for that project is really hard to
> > estimate
> > in my point of view. Do you have an idea how we could handle that?
> >
> >
> > >
> > > Hi,
> > >
> > > Regarding the PRU.
> > > I was able to load code to the PRU.
> > > However I wasn't able to map IRQ interrupts to the PRU, thus
> > unable
> > > to communicate with it in a meaningful way.
> > > Also I don't think that this project should be continued
> > without a
> > > full DEBUGGING Setup.
> > >
> > > Best,
> > > Nils
> > >
> > >
> > > +1, without a proper debugging setup I found it hard to
> precisely
> > > pin point the problem when I initially took up this task.
> > >
> > >
> > > What is the full DEBUGGING setup needed to work on the PRU?
> >
> > I expect a JTAG-Debugger. I had good experience with the Segger
> J-Link
> > EDU for GSoC projects with BBB. Alternatively there are OpenOCD based
> > ones out there too that are said do work well. Note that you have to
> > solder a debug connector to the Beagle for that.
> >
> > Best regards
> >
> > Christian
> >
> > >
> > > Regards,
> > > Husni.
> > >
> > > On Tue, Mar 23, 2021 at 10:25 PM Utkarsh Rai
> > <utkarsh.rai60 at gmail.com <mailto:utkarsh.rai60 at gmail.com>
> > > <mailto:utkarsh.rai60 at gmail.com
> > <mailto:utkarsh.rai60 at gmail.com>>> wrote:
> > >
> > >
> > >
> > >
> > > On Tue, Mar 23, 2021 at 9:36 PM Nils Hölscher
> > <nilhoel1 at gmail.com <mailto:nilhoel1 at gmail.com>
> > > <mailto:nilhoel1 at gmail.com <mailto:nilhoel1 at gmail.com>>>
> wrote:
> > >
> > > Hi,
> > >
> > > Regarding the PRU.
> > > I was able to load code to the PRU.
> > > However I wasn't able to map IRQ interrupts to the PRU,
> thus
> > > unable to communicate with it in a meaningful way
> > >
> > >
> > >
> > > Just a small addition, AFAIK the issue with this was the fact
> > that
> > > mmap() would always fail.
> > >
> > > .
> > > Also I don't think that this project should be continued
> > without
> > > a full DEBUGGING Setup.
> > >
> > >
> > > +1, without a proper debugging setup I found it hard to
> precisely
> > > pin point the problem when I initially took up this task.
> > >
> > >
> > > Best,
> > > Nils
> > >
> > > On Tue, 23 Mar 2021 at 17:00, Christian MAUDERER
> > > <christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>
> > > <mailto:christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>>> wrote:
> > >
> > > Hello Gedare,
> > >
> > > Am 23.03.21 um 16:48 schrieb Gedare Bloom:
> > > > CC: Nils, Utkarsh
> > > >
> > > > On Tue, Mar 23, 2021 at 9:17 AM Christian MAUDERER
> > > > <christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>
> > > <mailto:christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>>> wrote:
> > > >>
> > > >> Hello Ahamed,
> > > >>
> > > >> Am 23.03.21 um 11:24 schrieb Ahamed Husni:
> > > >>> Hi everyone,
> > > >>>
> > > >>> I'm really interested to work on the *Beagle BSP
> > > Projects* [#2891
> > > >>> <https://devel.rtems.org/ticket/2891
> > <https://devel.rtems.org/ticket/2891>
> > > <https://devel.rtems.org/ticket/2891
> > <https://devel.rtems.org/ticket/2891>>>]. *
> > > >>> *
> > > >>> *Adding PRU Support* [#3730
> > > <https://devel.rtems.org/ticket/3730
> > <https://devel.rtems.org/ticket/3730>
> > > <https://devel.rtems.org/ticket/3730
> > <https://devel.rtems.org/ticket/3730>>>]
> > > >>> project seems really interesting to me.
> > > >>> This project is partially done during GSoC 2019
> > > >>> <https://devel.rtems.org/wiki/GSoC/2019
> > <https://devel.rtems.org/wiki/GSoC/2019>
> > > <https://devel.rtems.org/wiki/GSoC/2019
> > <https://devel.rtems.org/wiki/GSoC/2019>>>by Nils Hölscher .
> > > >>> Is this a good project for the GSoC?
> > > >>>
> > > >>> Up to now I have,
> > > >>>
> > > >>> 1. Completed the GSoC prerequisite task
> > > >>> 2. Got the required hardware and tested it.
> > > (Beagleboard Black, USB to
> > > >>> TTL Converter)
> > > >>> 3. Installed RTEMS on the Beagleboard and
> tested.
> > > (Screenshot attached
> > > >>> below)
> > > >>>
> > > >>>
> > > >>> I need guidance to define the scope of the
> project.
> > > >>> I'm currently thinking of ,
> > > >>>
> > > >>> 1. First finish the remaining work from GSoC
> > 2019 on
> > > the PRU.
> > > >>> (What is the status of current
> > implementation of
> > > the PRU?)
> > > >>
> > > >> I'm really not sure what the state of the PRU is.
> I
> > > didn't follow that
> > > >> project closely. Maybe one of the mentors of that
> > > project can say
> > > >> anything regarding that.
> > > >>
> > > > Some more background:
> > > >
> > > https://lists.rtems.org/pipermail/devel/2019-December/056478.html
> > <https://lists.rtems.org/pipermail/devel/2019-December/056478.html>
> > >
> > <https://lists.rtems.org/pipermail/devel/2019-December/056478.html
> > <https://lists.rtems.org/pipermail/devel/2019-December/056478.html>>
> > > >
> > > https://lists.rtems.org/pipermail/devel/2020-January/056958.html
> > <https://lists.rtems.org/pipermail/devel/2020-January/056958.html>
> > >
> > <https://lists.rtems.org/pipermail/devel/2020-January/056958.html
> > <https://lists.rtems.org/pipermail/devel/2020-January/056958.html>>
> > > >
> > > > Maybe Utkarsh or Nils have more to say.
> > > >
> > > >>> 2. Implement additional peripheral support.
> > > >>> What would be most useful?
> > > >>> (USB OTG, CAN, ...).
> > > >>
> > > >> I think CAN is a bit hard without some CAN
> analyzer
> > > hardware as a peer.
> > > >>
> > > >> USB OTG would be a nice area. But that will be
> less
> > > writing a driver for
> > > >> Beagle but more finding out how that works with
> > libbsd
> > > and finding a
> > > >> good way to configure it. I once put a few hours
> > into it
> > > didn't take too
> > > >> much time till a PC detected an USB device (see
> > > >>
> > > https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce
> > <https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce>
> > >
> > <https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce
> > <https://gitlab.com/c-mauderer/rtems-libbsd/-/tree/20170707-cdce>>).
> > > >> Basically it's about importing the "usb_template"
> > stuff
> > > and finding a
> > > >> way to configure it in libbsd.
> > > >>
> > > >> I think that topic would have to be a bit of an
> open
> > > one: You might work
> > > >> only a day on it and have a working CDC Ethernet
> > > afterwards or you can
> > > >> need weeks for that. So you should add an open
> > list of
> > > possible advanced
> > > >> targets. An OTG device can be:
> > > >>
> > > >> - Ethernet
> > > >> - Serial port
> > > >> - Mass storage
> > > >> - Keyboard / Mouse
> > > >> - Modem
> > > >> - Audio
> > > >> - ...
> > > >>
> > > >> The simplest one will most likely be Ethernet
> > followed
> > > by serial port. I
> > > >> would add some of the others (like mass storage)
> > as an
> > > extended targets.
> > > >>
> > > > Yes, this seems like an area that can be chipped
> > away at,
> > > with a
> > > > strong plan of activities. My concern would be
> > whether it
> > > is about
> > > > writing code or not?
> > > >
> > >
> > > It won't produce a lot of code. But it will produce
> > relevant
> > > one:
> > >
> > > 1. Interface for configuration (if necessary)
> > >
> > > 2. Example application
> > >
> > > 3. Documentation
> > >
> > > For Ethernet and serial port that's most likely it.
> > For Mass
> > > storage
> > > there might be some more code. Without a too detailed
> > look:
> > > I would
> > > expect that the mass storage either implements some
> > access
> > > to a raw
> > > block device - in which case it would be necessary to
> add
> > > the access to
> > > block devices. Or it implements something like the
> > PTP stuff
> > > used on
> > > smartphones in which case there will be most likely
> some
> > > code that
> > > accesses the file system using POSIX functions
> instead of
> > > FreeBSD kernel
> > > functions.
> > >
> > > Best regards
> > >
> > > Christian
> > >
> > > >> Best regards
> > > >>
> > > >> Christian
> > > >>
> > > >>>
> > > >>> The builtin USB is NOT functional other
> > than for
> > > power under RTEMS.
> > > >>> (USB OTG would have to be implemented in
> > RTEMS to
> > > get rid of USB to
> > > >>> TTL Converter.)
> > > >>> - Ben Gras
> > > >>>
> > >
> > <
> http://www.shrike-systems.com/beagleboard-xm-beaglebone-black-and-everything-else-rtems-on-the-beagles.html
> <
> http://www.shrike-systems.com/beagleboard-xm-beaglebone-black-and-everything-else-rtems-on-the-beagles.html
> >
> > >
> > <
> http://www.shrike-systems.com/beagleboard-xm-beaglebone-black-and-everything-else-rtems-on-the-beagles.html
> <
> http://www.shrike-systems.com/beagleboard-xm-beaglebone-black-and-everything-else-rtems-on-the-beagles.html
> >>>
> > > >>> (Blog post)
> > > >>>
> > > >>>
> > > >>> Thanks,
> > > >>> Husni Faiz.
> > > >>>
> > > >>>
> > > >>> BBB_Serial_Out.png
> > > >>>
> > > >>>
> > > >>> _______________________________________________
> > > >>> devel mailing list
> > > >>> devel at rtems.org <mailto:devel at rtems.org>
> > <mailto:devel at rtems.org <mailto:devel at rtems.org>>
> > > >>> http://lists.rtems.org/mailman/listinfo/devel
> > <http://lists.rtems.org/mailman/listinfo/devel>
> > > <http://lists.rtems.org/mailman/listinfo/devel
> > <http://lists.rtems.org/mailman/listinfo/devel>>
> > > >>>
> > > >>
> > > >> --
> > > >> --------------------------------------------
> > > >> embedded brains GmbH
> > > >> Herr Christian MAUDERER
> > > >> Dornierstr. 4
> > > >> 82178 Puchheim
> > > >> Germany
> > > >> email: christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>
> > > <mailto:christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>>
> > > >> phone: +49-89-18 94 741 - 18
> > > >> fax: +49-89-18 94 741 - 08
> > > >>
> > > >> Registergericht: Amtsgericht München
> > > >> Registernummer: HRB 157899
> > > >> Vertretungsberechtigte Geschäftsführer: Peter
> > Rasmussen,
> > > Thomas Dörfler
> > > >> Unsere Datenschutzerklärung finden Sie hier:
> > > >> https://embedded-brains.de/datenschutzerklaerung/
> > <https://embedded-brains.de/datenschutzerklaerung/>
> > > <https://embedded-brains.de/datenschutzerklaerung/
> > <https://embedded-brains.de/datenschutzerklaerung/>>
> > > >> _______________________________________________
> > > >> devel mailing list
> > > >> devel at rtems.org <mailto:devel at rtems.org>
> > <mailto:devel at rtems.org <mailto:devel at rtems.org>>
> > > >> http://lists.rtems.org/mailman/listinfo/devel
> > <http://lists.rtems.org/mailman/listinfo/devel>
> > > <http://lists.rtems.org/mailman/listinfo/devel
> > <http://lists.rtems.org/mailman/listinfo/devel>>
> > >
> > > --
> > > --------------------------------------------
> > > embedded brains GmbH
> > > Herr Christian MAUDERER
> > > Dornierstr. 4
> > > 82178 Puchheim
> > > Germany
> > > email: christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>
> > > <mailto:christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>>
> > > phone: +49-89-18 94 741 - 18
> > > fax: +49-89-18 94 741 - 08
> > >
> > > Registergericht: Amtsgericht München
> > > Registernummer: HRB 157899
> > > Vertretungsberechtigte Geschäftsführer: Peter
> Rasmussen,
> > > Thomas Dörfler
> > > Unsere Datenschutzerklärung finden Sie hier:
> > > https://embedded-brains.de/datenschutzerklaerung/
> > <https://embedded-brains.de/datenschutzerklaerung/>
> > > <https://embedded-brains.de/datenschutzerklaerung/
> > <https://embedded-brains.de/datenschutzerklaerung/>>
> > >
> >
> > --
> > --------------------------------------------
> > embedded brains GmbH
> > Herr Christian MAUDERER
> > Dornierstr. 4
> > 82178 Puchheim
> > Germany
> > email: christian.mauderer at embedded-brains.de
> > <mailto:christian.mauderer at embedded-brains.de>
> > phone: +49-89-18 94 741 - 18
> > fax: +49-89-18 94 741 - 08
> >
> > Registergericht: Amtsgericht München
> > Registernummer: HRB 157899
> > Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas
> Dörfler
> > Unsere Datenschutzerklärung finden Sie hier:
> > https://embedded-brains.de/datenschutzerklaerung/
> > <https://embedded-brains.de/datenschutzerklaerung/>
> >
> >
> >
> > --
> > Husni
> >
> > _______________________________________________
> > devel mailing list
> > devel at rtems.org
> > http://lists.rtems.org/mailman/listinfo/devel
> >
>
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