[beagleboard] StarterWare-like stuff for BB AI available?

[Mike Maikaefer]

Hi,

I'm currently using the BBB with some extensive bare-metal software which 
bases on StarterWare. Now the BB AI looks very interesting for me and I 
would like to switch over with this software to the new platform.

I'm absolutely aware of the fact that a lot of things would have to be done 
as not only the two cores have to be handled completely different.

But my questions is: is there something like StarterWare/a board support 
package available which gives the possibility to directly program the BB AI 
in a similar low-level way like the BBB?

Thanks!

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Re: [beagleboard] 4 GByte RAM?

[Mike Maikaefer]

No, when you check out the BOM or the schematic, you will find 4GB DDR3 RAM
(which is not the eMMC).

On Thu, May 17, 2018 at 10:47 AM, Rick Mann  wrote:

> That's eMMC flash, not RAM. It's accessed like a disk.
>
> > On May 16, 2018, at 22:44 , mike.maikae...@gmail.com wrote:
> >
> > Hi,
> >
> > according to the schematics there is a RAM-module with 4 GByte available
> on the BBB (and also on the BBG). Why are there only 512 MBytes available
> for the CPU - aren't enough address lines used? Or what else is the reason?
> >
> > Kind regards
> >
> > Mike
> >
> >
> >
> > --
> > For more options, visit http://beagleboard.org/discuss
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> > You received this message because you are subscribed to the Google
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> > For more options, visit https://groups.google.com/d/optout.
>
>
> --
> Rick Mann
> rm...@latencyzero.com
>
>
> --
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>

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[beagleboard] 4 GByte RAM?

[mike . maikaefer]

Hi,

according to the schematics there is a RAM-module with 4 GByte available on 
the BBB (and also on the BBG). Why are there only 512 MBytes available for 
the CPU - aren't enough address lines used? Or what else is the reason?

Kind regards

Mike


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Re: [beagleboard] Where are the hardware data / component placement list?

[Mike Maikaefer]

Great, thanks, I'll try that :-)

On Wed, May 16, 2018 at 6:12 PM, Gerald Coley <gcol...@emprodesign.com>
wrote:

> Check this part and see if it fits.
>
>
>
> https://www.mouser.com/datasheet/2/15/alps_SCHA4B0419-1155906.pdf
>
>
>
> Gerald
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
> *On Behalf Of *Gerald Coley
> *Sent:* Wednesday, May 16, 2018 11:11 AM
>
> *To:* beagleboard@googlegroups.com
> *Subject:* RE: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> I am no longer involved with the manufacturing. I remember ordering a
> bunch of them a while back. As it says on the WIKI, if you have any
> questions, contact Jason Kridner. He is handling the manufacturing. I am
> not aware if they made any changes or not.
>
>
>
> The BOM on the WIKI for the BBB is a .csv file, I never used .csv files so
> I have no idea where that came from and it has not been changed from the
> original design from a part number standpoint on that connector.
>
>
>
> Gerald
>
>
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com
> <beagleboard@googlegroups.com>] *On Behalf Of *Mike Maikaefer
> *Sent:* Wednesday, May 16, 2018 10:34 AM
> *To:* beagleboard@googlegroups.com
> *Subject:* Re: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> Any idea where I could get the latest version from? I of course would
> modify it for my own but it does not really worth to pay X000,00 Dollars
> for Altium just for my few boards...
>
>
>
> Cheers
>
>
>
> Mike
>
>
>
>
>
>
>
> On Wed, May 16, 2018 at 1:58 PM, Gerald Coley <gcol...@emprodesign.com>
> wrote:
>
> It may not be the latest. That conenctor was replaced a while back.
>
>
>
> Gerald
>
>
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
> *On Behalf Of *Mike Maikaefer
> *Sent:* Wednesday, May 16, 2018 5:17 AM
>
>
> *To:* beagleboard@googlegroups.com
> *Subject:* Re: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> I afraid I have to come back to this: sure this is the latest version of
> the layout? It makes use of the Alps SCHA5B0200 microSD card connector
> which is discontinued and which does not seem to have a compatible
> replacement!?
>
>
>
> Mike
>
>
>
>
>
>
>
> On Tue, May 15, 2018 at 1:58 PM, Mike Maikaefer <mike.maikae...@gmail.com>
> wrote:
>
> Thanks :-)
>
>
>
> On Tue, May 15, 2018 at 1:50 PM, Gerald Coley <gcol...@emprodesign.com>
> wrote:
>
> I just looked, the XY data is in the zip file under the MFG
> (Manufacturing) directory.
>
>
>
> https://github.com/beagleboard/beaglebone-black/archive/master.zip
>
>
>
> Gerald
>
>
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
> *On Behalf Of *Gerald Coley
> *Sent:* Tuesday, May 15, 2018 6:47 AM
> *To:* beagleboard@googlegroups.com
> *Subject:* RE: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> https://www.elinux.org/Beagleboard:Main_Page Main Wiki
>
>
>
> https://www.elinux.org/Beagleboard:BeagleBoneBlack BeagleBone Black
> Section
>
>
>
> https://www.elinux.org/Beagleboard:BeagleBoneBlack#
> LATEST_PRODUCTION_FILES_.28C.29 Latest Production Files
>
>
>
>
>
> Gerald
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com
> <beagleboard@googlegroups.com>] *On Behalf Of *Mike Maikaefer
> *Sent:* Tuesday, May 15, 2018 6:30 AM
> *To:* beagleboard@googlegroups.com
> *Subject:* Re: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> Hi Gerald,
>
>
>
> thanks for the feedback. Where can one download the Altium version? I only
> found the one with the Gerber-files...
>
>
>
> Cheers
>
>
>
> Mike
>
>
>
>
>
> On Tue, May 15, 2018 at 1:27 PM, Gerald Coley <ger...@beagleboard.org>
> wrote:
>
> You can get that out of the Allegro file that is provided aling with all
> of that. I do not recall if we ever provided that as a separate file or
> not.
>
>
>
> You should be able to get that also out of the Altium version as well.
>
>
>
> On Tue, May 15, 2018, 2:13 AM <mike.maikae...@gmail.com> wrote:
>
> Hi,
>
>
>
> I wonder if the complete hardware data for the BBB are available
> somewhere: I found some Gerber files defining the PCB, a BOM defining the
> used comp

Re: [beagleboard] Where are the hardware data / component placement list?

[Mike Maikaefer]

Any idea where I could get the latest version from? I of course would
modify it for my own but it does not really worth to pay X000,00 Dollars
for Altium just for my few boards...

Cheers

Mike



On Wed, May 16, 2018 at 1:58 PM, Gerald Coley <gcol...@emprodesign.com>
wrote:

> It may not be the latest. That conenctor was replaced a while back.
>
>
>
> Gerald
>
>
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
> *On Behalf Of *Mike Maikaefer
> *Sent:* Wednesday, May 16, 2018 5:17 AM
>
> *To:* beagleboard@googlegroups.com
> *Subject:* Re: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> I afraid I have to come back to this: sure this is the latest version of
> the layout? It makes use of the Alps SCHA5B0200 microSD card connector
> which is discontinued and which does not seem to have a compatible
> replacement!?
>
>
>
> Mike
>
>
>
>
>
>
>
> On Tue, May 15, 2018 at 1:58 PM, Mike Maikaefer <mike.maikae...@gmail.com>
> wrote:
>
> Thanks :-)
>
>
>
> On Tue, May 15, 2018 at 1:50 PM, Gerald Coley <gcol...@emprodesign.com>
> wrote:
>
> I just looked, the XY data is in the zip file under the MFG
> (Manufacturing) directory.
>
>
>
> https://github.com/beagleboard/beaglebone-black/archive/master.zip
>
>
>
> Gerald
>
>
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
> *On Behalf Of *Gerald Coley
> *Sent:* Tuesday, May 15, 2018 6:47 AM
> *To:* beagleboard@googlegroups.com
> *Subject:* RE: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> https://www.elinux.org/Beagleboard:Main_Page Main Wiki
>
>
>
> https://www.elinux.org/Beagleboard:BeagleBoneBlack BeagleBone Black
> Section
>
>
>
> https://www.elinux.org/Beagleboard:BeagleBoneBlack#
> LATEST_PRODUCTION_FILES_.28C.29 Latest Production Files
>
>
>
>
>
> Gerald
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com
> <beagleboard@googlegroups.com>] *On Behalf Of *Mike Maikaefer
> *Sent:* Tuesday, May 15, 2018 6:30 AM
> *To:* beagleboard@googlegroups.com
> *Subject:* Re: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> Hi Gerald,
>
>
>
> thanks for the feedback. Where can one download the Altium version? I only
> found the one with the Gerber-files...
>
>
>
> Cheers
>
>
>
> Mike
>
>
>
>
>
> On Tue, May 15, 2018 at 1:27 PM, Gerald Coley <ger...@beagleboard.org>
> wrote:
>
> You can get that out of the Allegro file that is provided aling with all
> of that. I do not recall if we ever provided that as a separate file or
> not.
>
>
>
> You should be able to get that also out of the Altium version as well.
>
>
>
> On Tue, May 15, 2018, 2:13 AM <mike.maikae...@gmail.com> wrote:
>
> Hi,
>
>
>
> I wonder if the complete hardware data for the BBB are available
> somewhere: I found some Gerber files defining the PCB, a BOM defining the
> used components but I did not found a CPL that describes which component
> has to be placed at which position.
>
>
>
> So...aren't these data open and available for free?
>
>
>
> Thanks!
>
>
>
> Mike
>
>
>
>
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to the Google Groups
> "BeagleBoard" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to beagleboard+unsubscr...@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/
> msgid/beagleboard/983b83c4-0192-4c08-bb4f-87ffee283a62%40googlegroups.com
> <https://groups.google.com/d/msgid/beagleboard/983b83c4-0192-4c08-bb4f-87ffee283a62%40googlegroups.com?utm_medium=email_source=footer>
> .
> For more options, visit https://groups.google.com/d/optout.
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to a topic in the
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> 2BmDiDsYaBuBA%40mail.gmail.com
> <https://groups

Re: [beagleboard] Where are the hardware data / component placement list?

[Mike Maikaefer]

I afraid I have to come back to this: sure this is the latest version of
the layout? It makes use of the Alps SCHA5B0200 microSD card connector
which is discontinued and which does not seem to have a compatible
replacement!?

Mike



On Tue, May 15, 2018 at 1:58 PM, Mike Maikaefer <mike.maikae...@gmail.com>
wrote:

> Thanks :-)
>
> On Tue, May 15, 2018 at 1:50 PM, Gerald Coley <gcol...@emprodesign.com>
> wrote:
>
>> I just looked, the XY data is in the zip file under the MFG
>> (Manufacturing) directory.
>>
>>
>>
>> https://github.com/beagleboard/beaglebone-black/archive/master.zip
>>
>>
>>
>> Gerald
>>
>>
>>
>>
>>
>> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
>> *On Behalf Of *Gerald Coley
>> *Sent:* Tuesday, May 15, 2018 6:47 AM
>> *To:* beagleboard@googlegroups.com
>> *Subject:* RE: [beagleboard] Where are the hardware data / component
>> placement list?
>>
>>
>>
>> https://www.elinux.org/Beagleboard:Main_Page Main Wiki
>>
>>
>>
>> https://www.elinux.org/Beagleboard:BeagleBoneBlack BeagleBone Black
>> Section
>>
>>
>>
>> https://www.elinux.org/Beagleboard:BeagleBoneBlack#LATEST_
>> PRODUCTION_FILES_.28C.29 Latest Production Files
>>
>>
>>
>>
>>
>> Gerald
>>
>>
>>
>> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com
>> <beagleboard@googlegroups.com>] *On Behalf Of *Mike Maikaefer
>> *Sent:* Tuesday, May 15, 2018 6:30 AM
>> *To:* beagleboard@googlegroups.com
>> *Subject:* Re: [beagleboard] Where are the hardware data / component
>> placement list?
>>
>>
>>
>> Hi Gerald,
>>
>>
>>
>> thanks for the feedback. Where can one download the Altium version? I
>> only found the one with the Gerber-files...
>>
>>
>>
>> Cheers
>>
>>
>>
>> Mike
>>
>>
>>
>>
>>
>> On Tue, May 15, 2018 at 1:27 PM, Gerald Coley <ger...@beagleboard.org>
>> wrote:
>>
>> You can get that out of the Allegro file that is provided aling with all
>> of that. I do not recall if we ever provided that as a separate file or
>> not.
>>
>>
>>
>> You should be able to get that also out of the Altium version as well.
>>
>>
>>
>> On Tue, May 15, 2018, 2:13 AM <mike.maikae...@gmail.com> wrote:
>>
>> Hi,
>>
>>
>>
>> I wonder if the complete hardware data for the BBB are available
>> somewhere: I found some Gerber files defining the PCB, a BOM defining the
>> used components but I did not found a CPL that describes which component
>> has to be placed at which position.
>>
>>
>>
>> So...aren't these data open and available for free?
>>
>>
>>
>> Thanks!
>>
>>
>>
>> Mike
>>
>>
>>
>>
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "BeagleBoard" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to beagleboard+unsubscr...@googlegroups.com.
>> To view this discussion on the web visit https://groups.google.com/d/ms
>> gid/beagleboard/983b83c4-0192-4c08-bb4f-87ffee283a62%40googlegroups.com
>> <https://groups.google.com/d/msgid/beagleboard/983b83c4-0192-4c08-bb4f-87ffee283a62%40googlegroups.com?utm_medium=email_source=footer>
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
>> ---
>> You received this message because you are subscribed to a topic in the
>> Google Groups "BeagleBoard" group.
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>> pic/beagleboard/-9vPN39NWQU/unsubscribe.
>> To unsubscribe from this group and all its topics, send an email to
>> beagleboard+unsubscr...@googlegroups.com.
>> To view this discussion on the web visit https://groups.google.com/d/ms
>> gid/beagleboard/CAHK_S%2BeiiGn4QHfTrnt2VpPu%2BbwOWG1TKLB0h%
>> 2B%2BmDiDsYaBuBA%40mail.gmail.com
>> <https://groups.google.com/d/msgid/beagleboard/CAHK_S%2BeiiGn4QHfTrnt2VpPu%2BbwOWG1TKLB0h%2B%2BmDiDsYaBuBA%40mail.gmail.com?utm_medium=email_source=footer>
>> .
>>
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>>
>>
>> --
>&g

Re: [beagleboard] Where are the hardware data / component placement list?

[Mike Maikaefer]

Thanks :-)

On Tue, May 15, 2018 at 1:50 PM, Gerald Coley <gcol...@emprodesign.com>
wrote:

> I just looked, the XY data is in the zip file under the MFG
> (Manufacturing) directory.
>
>
>
> https://github.com/beagleboard/beaglebone-black/archive/master.zip
>
>
>
> Gerald
>
>
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
> *On Behalf Of *Gerald Coley
> *Sent:* Tuesday, May 15, 2018 6:47 AM
> *To:* beagleboard@googlegroups.com
> *Subject:* RE: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> https://www.elinux.org/Beagleboard:Main_Page Main Wiki
>
>
>
> https://www.elinux.org/Beagleboard:BeagleBoneBlack BeagleBone Black
> Section
>
>
>
> https://www.elinux.org/Beagleboard:BeagleBoneBlack#
> LATEST_PRODUCTION_FILES_.28C.29 Latest Production Files
>
>
>
>
>
> Gerald
>
>
>
> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com
> <beagleboard@googlegroups.com>] *On Behalf Of *Mike Maikaefer
> *Sent:* Tuesday, May 15, 2018 6:30 AM
> *To:* beagleboard@googlegroups.com
> *Subject:* Re: [beagleboard] Where are the hardware data / component
> placement list?
>
>
>
> Hi Gerald,
>
>
>
> thanks for the feedback. Where can one download the Altium version? I only
> found the one with the Gerber-files...
>
>
>
> Cheers
>
>
>
> Mike
>
>
>
>
>
> On Tue, May 15, 2018 at 1:27 PM, Gerald Coley <ger...@beagleboard.org>
> wrote:
>
> You can get that out of the Allegro file that is provided aling with all
> of that. I do not recall if we ever provided that as a separate file or
> not.
>
>
>
> You should be able to get that also out of the Altium version as well.
>
>
>
> On Tue, May 15, 2018, 2:13 AM <mike.maikae...@gmail.com> wrote:
>
> Hi,
>
>
>
> I wonder if the complete hardware data for the BBB are available
> somewhere: I found some Gerber files defining the PCB, a BOM defining the
> used components but I did not found a CPL that describes which component
> has to be placed at which position.
>
>
>
> So...aren't these data open and available for free?
>
>
>
> Thanks!
>
>
>
> Mike
>
>
>
>
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to the Google Groups
> "BeagleBoard" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to beagleboard+unsubscr...@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/
> msgid/beagleboard/983b83c4-0192-4c08-bb4f-87ffee283a62%40googlegroups.com
> <https://groups.google.com/d/msgid/beagleboard/983b83c4-0192-4c08-bb4f-87ffee283a62%40googlegroups.com?utm_medium=email_source=footer>
> .
> For more options, visit https://groups.google.com/d/optout.
>
> --
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> .
>
>
> For more options, visit https://groups.google.com/d/optout.
>
>
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to the Google Groups
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Re: [beagleboard] Where are the hardware data / component placement list?

[Mike Maikaefer]

Hi Gerald,

thanks for the feedback. Where can one download the Altium version? I only
found the one with the Gerber-files...

Cheers

Mike


On Tue, May 15, 2018 at 1:27 PM, Gerald Coley 
wrote:

> You can get that out of the Allegro file that is provided aling with all
> of that. I do not recall if we ever provided that as a separate file or
> not.
>
> You should be able to get that also out of the Altium version as well.
>
> On Tue, May 15, 2018, 2:13 AM  wrote:
>
>> Hi,
>>
>> I wonder if the complete hardware data for the BBB are available
>> somewhere: I found some Gerber files defining the PCB, a BOM defining the
>> used components but I did not found a CPL that describes which component
>> has to be placed at which position.
>>
>> So...aren't these data open and available for free?
>>
>> Thanks!
>>
>> Mike
>>
>>
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[beagleboard] Where are the hardware data / component placement list?

[mike . maikaefer]

Hi,

I wonder if the complete hardware data for the BBB are available somewhere: 
I found some Gerber files defining the PCB, a BOM defining the used 
components but I did not found a CPL that describes which component has to 
be placed at which position.

So...aren't these data open and available for free?

Thanks!

Mike


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Re: [beagleboard] BeagleBone Black shortage

[mike . maikaefer]

Thanks for your feedback.

Mouse unfortunately is not an option, although it is a German company, 
their webshop does not allow me to order BBBs when they have to be shipped 
to Germany due to some exports restrictions :-D

Same works well for all other suppliers...so maybe this is the reason they 
have some BBBs left since all German customers can't buy at Mouser :-)



On Thursday, February 1, 2018 at 7:12:12 PM UTC+1, Graham wrote:
>
> Mouser has BBB  600+ in stock
>   BB Wireless 3000+ in stock
>
> --- Graham
>
>
>
> On Thursday, February 1, 2018 at 8:48:58 AM UTC-6, RobertCNelson wrote:
>>
>> On Thu, Feb 1, 2018 at 8:42 AM,   wrote: 
>> > Hi, 
>> > 
>> > for some months we can see a BBB-shortage which meanwhile becomes 
>> dramatic. 
>> > Farnell can ship BBBs earliest end of February (but only a few 
>> thousands) 
>> > and the prices have risen from ~50 Euro to more than 90 Euro at some 
>> > distributors. 
>> > 
>> > Anybody an idea what's going on here? Has the BBB reached the end of 
>> it's 
>> > life? 
>>
>> 16 left at DigiKey. 
>>
>>
>> https://www.digikey.com/product-detail/en/ghi-electronics-llc/BBB01-SC-505/BBB01-SC-505-ND/6210999
>>  
>>
>> The BBB hasn't reached EOL. 
>>
>> More then likely it's related to the industry wide memory shortage. 
>>
>> Regards, 
>>
>> -- 
>> Robert Nelson 
>> https://rcn-ee.com/ 
>>
>

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[beagleboard] BeagleBone Black shortage

[mike . maikaefer]

Hi,

for some months we can see a BBB-shortage which meanwhile becomes dramatic. 
Farnell can ship BBBs earliest end of February (but only a few thousands) 
and the prices have risen from ~50 Euro to more than 90 Euro at some 
distributors.

Anybody an idea what's going on here? Has the BBB reached the end of it's 
life?

Mike


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[beagleboard] New BeagleBone revision with OSD335x SiP?

[mike . maikaefer]

Hi,

are there any plans to have a fully pin-compatible BeagleBone Black which 
makes use of the OSD335x SIP? The andvantages are obvious, this could lower 
the price of the BBB nameably.

Mike

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[beagleboard] Re: BBB MMC bare metal demo program

[mike . maikaefer]

Have you tried to submit a patch? The project itself seems to be alive, 
last change was done only one month 
ago: https://sourceforge.net/p/starterwarefree/code/ci/master/tree/

And this seems to be the maintainer of the 
project: https://sourceforge.net/u/openapcjim/profile/



On Thursday, January 4, 2018 at 11:42:59 AM UTC+1, dd wrote:
>
> Hi Mike.  It is not related to the sourceforge starterware project, but 
> they are free to rip it.  
> I had a look at them, i did not see anyone spearheading the project.  
> It would be great to have a collaboration of contributors, this is a huge 
> undertaking.  
> we really need a real-time library that we can build on.   
>
> hack on brothersdd
>
> On Wednesday, January 3, 2018 at 10:47:41 AM UTC+2, mike.ma...@gmail.com 
> wrote:
>>
>> Is this somehow related to the free StarterWare project at Sourceforge? 
>> If no: any chance it will be integrated there?
>>
>> On Monday, January 1, 2018 at 2:22:34 PM UTC+1, dd wrote:
>>>
>>> Hi 2 all 'bone programmers.  
>>> The starterware MMC port is finally finished.  
>>> This is a great opportunity to learn MMC and FAT32 architecture.  
>>> As well as ARM assembly, IRQ, DMA, image building etc
>>> on a wickedly powerful IoT platform, the BBB!
>>> It builds under GNU/GCC, all the makefile stuff is there.  
>>> It was a long time coming.  The TI code was very well written, 
>>> but also unnecessarily complicated.  Well, I removed all that.  
>>> So, now you can use/mod/hack it with relative confidence
>>> for your IoT project.  
>>>
>>> hack on my brothers.dd
>>>
>>

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[beagleboard] Re: BBB MMC bare metal demo program

[mike . maikaefer]

Is this somehow related to the free StarterWare project at Sourceforge? If 
no: any chance it will be integrated there?

On Monday, January 1, 2018 at 2:22:34 PM UTC+1, dd wrote:
>
> Hi 2 all 'bone programmers.  
> The starterware MMC port is finally finished.  
> This is a great opportunity to learn MMC and FAT32 architecture.  
> As well as ARM assembly, IRQ, DMA, image building etc
> on a wickedly powerful IoT platform, the BBB!
> It builds under GNU/GCC, all the makefile stuff is there.  
> It was a long time coming.  The TI code was very well written, 
> but also unnecessarily complicated.  Well, I removed all that.  
> So, now you can use/mod/hack it with relative confidence
> for your IoT project.  
>
> hack on my brothers.dd
>

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Re: [beagleboard] Re: Use analogue inputs with 5 or 10 V signal

[Mike Maikaefer]

Great, thanks to all :-)

On Wed, Dec 27, 2017 at 2:35 AM, Adam Saenz  wrote:

> That circuit will work.  Yes on connecting external ground to GNDA, that
> will give you a common reference.  Those resistor values will allow the ADC
> to see about 1.78V when the input voltage is 5V, looks like a good place to
> start.  As far as resistor values (1k, 1.8k vs 10k, 18k), I'd go with the
> 1k, 1.8k pair as long as your source circuit can handle sourcing a 2.8k
> load (1.7mA max).  If it can't then I'd consider something that gives you a
> total resistance of 5-6k.  The 10k/18k pair gives you 28k total, should be
> ok but I've had ADCs have trouble working when resistances approach 100k.
>
> Someone mentioned using op amps which is a good choice, as is using an
> anti-aliasing filter but since this is a noob type question I figured
> starting simpler is a better choice.  You can improve you analog circuit if
> you discover your application needs to minimize noise, or is sensitive to
> load, etc.  Start simple though.
>
> Adam
>
> On Tue, Dec 26, 2017 at 10:58 AM, Dennis Lee Bieber  > wrote:
>
>> On Tue, 26 Dec 2017 10:40:54 -0800 (PST),
>> mike.maikae...@gmail.com declaimed the
>> following:
>>
>> >
>> >
>> >So it could look like this!? External ground is directly connected to
>> GNDA
>> >and the relation between the resistors is equal to the relation of the
>> >voltages to apply at each!? How about the exact resistor values - 18 kOhm
>> >and 10 kOhm would be the same from relation, but which one should I use
>> >really? Thanks :-)
>> >
>>
>> How much current flow can you accept? Consider, without the
>> resistors
>> you basically have a direct short from the input voltage source to ground.
>> Small value resistors will let a lot more current pass. You likely need to
>> balance between not having too much current flowing through the divider
>> and
>> having so little current flowing that the ADC can't sense the voltage...
>>
>> --
>> Wulfraed Dennis Lee Bieber AF6VN
>> wlfr...@ix.netcom.comHTTP://wlfraed.home.netcom.com/
>>
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[beagleboard] Re: Use analogue inputs with 5 or 10 V signal

[mike . maikaefer]

So it could look like this!? External ground is directly connected to GNDA 
and the relation between the resistors is equal to the relation of the 
voltages to apply at each!? How about the exact resistor values - 18 kOhm 
and 10 kOhm would be the same from relation, but which one should I use 
really? Thanks :-)





On Wednesday, December 20, 2017 at 4:29:44 PM UTC+1, Adam Saenz wrote:
>
> Forgot to add that you should use the GNDA as the ground reference to your 
> external analog input sources.
>
> Adam
>
> On Wednesday, December 20, 2017 at 6:57:26 AM UTC-8, Adam Saenz wrote:
>>
>> You will need to use a voltage divider to lower the detectable voltage of 
>> your 0-5V or 0-10V inputs to a range of 0-1.8V or less.  Google voltage 
>> divider to see how this is done; sparkfun provides a pretty nice 
>> explanation of voltage dividers.  If you look at the schematic, an example 
>> of a voltage divider is done for AIN7 to read the 3.3V supply voltage.  
>> AIN7 will see is 1.65V when VDD_3V3B is 3.3V.
>>
>> ADCs are most accurate when the voltage they are reading is stable and 
>> free from noise or ripple voltages.  Digital circuits (e.g. the processor 
>> cor) are sources of digital noise so a separate VADC and GNDA are provided 
>> to minimize the influence of noisy digital sources.   If you look on the 
>> schematic VDD_ADC is actually connected to VDD_1V8 through a ferrite bead 
>> (inductor). The ferrite bead is there to block high frequency noise caused 
>> by the digital circuits, while allowing DC voltages to pass; so VDD_ADC is 
>> actually connected to 1.8V.  The AM3358 datasheet lists the max voltage 
>> input of VDD_ADC as 2.1V so you cannot connect a 5V or 10V reference 
>> directly to it.  It's best to use the existing 1.8V reference and scale the 
>> analog input voltages you want to measure so they are less than 1.8V.
>>
>> Adam
>>
>>
>> On Wednesday, December 20, 2017 at 4:46:11 AM UTC-8, mike.ma...@gmail.com 
>> wrote:
>>>
>>> Hi,
>>>
>>> this is somewhat a noob-question, but my skills in analogue hardware are 
>>> limited.
>>>
>>> The BeagleBones (and variants) come with six analogue inputs which each 
>>> have a separate ground line GNDA and also a separate power supply VADC.
>>>
>>> My questions here: how can I connect an external signal with 0..5V or 
>>> 0..10V to these inputs in order to read their analogue value?
>>>
>>> And how about GNDA, has it to be separated from normal GND?
>>>
>>> Thanks!
>>>
>>> Mike
>>>
>>>

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[beagleboard] Use analogue inputs with 5 or 10 V signal

[mike . maikaefer]

Hi,

this is somewhat a noob-question, but my skills in analogue hardware are 
limited.

The BeagleBones (and variants) come with six analogue inputs which each 
have a separate ground line GNDA and also a separate power supply VADC.

My questions here: how can I connect an external signal with 0..5V or 
0..10V to these inputs in order to read their analogue value?

And how about GNDA, has it to be separated from normal GND?

Thanks!

Mike

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Re: [beagleboard] Re: Where are VDD and SYS_RESETn?

[mike . maikaefer]

I soldered the power-wires of an USB-cable to P1/pin 1 and P1/pin 16. So 
USB was not used at all in this scenario.

Regarding SYS_RESETn: I found a signal named RESET_OUT at P2/pin 26 - could 
this the equivalent to SYS_RESETn? Unfortunately I have no idea how to 
measure if it could be it or not...

On Tuesday, December 12, 2017 at 3:03:45 PM UTC+1, Graham wrote:
>
> Mike:
>
> Thanks for the comments.
>
> Were you using the USB0 connector on the board (which is hardwired to 
> P1-pin7), or was it an independent off board connector?
>
> --- Graham
>
>
 

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[beagleboard] Re: PWM in Pocket Beagle Bone

[mike . maikaefer]

What software are you talking about? Linux? Bare metal/StarterWare?



On Friday, December 8, 2017 at 10:55:39 AM UTC+1, Rohit Karkala wrote:
>
> Hello All, 
>
> I want to disable the PWM functionality of Pocket Beagle Bone and use it 
> as GPIO.
>
> How can i do this.
>

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[beagleboard] Re: Where are VDD and SYS_RESETn?

[mike . maikaefer]

Hello Graham,

thanks for your feedback.

I tried running PocketBeagle from Vin/pin1 and it worked smoothly here for 
more than 13 hours. It was powered via 5V that came from a USB connector.

But I was running a bare metal application with no Linux involved. So may 
be there is a bug rather in the Linux system you are using than in the 
hardware?

I remember the PMIC of the BeagleBone could be accessed from software, 
watchdog with some illegal parameters would be a candidate too (OK, 
watchdog would not explain why the power pin has an influence...).

With kind regards

Mike



On Saturday, December 9, 2017 at 6:11:39 AM UTC+1, Graham wrote:
>
> I have been unable to get a PocketBeagle to run for more than about 12 
> hours without rebooting when powered from Vin (P1-pin1), using a trusted 
> power supply.
> It usually reboots itself successfully, so in order to see it, run some 
> commands to turn off the blinking blue lights. If they come back on by 
> themselves, it has rebooted.
> Or you can read the system logs.
>
> It works fine when powered from Vi (P1-pin7) which is the same as the Vusb 
> +5 Volt input/output.
> It works fine when Vi and Vin are paralleled, but I am uncomfortable 
> paralleling power supplies, unless someone who really understands them says 
> it is OK.
>
> The docs indicate that Vin (P1-pin1) should be the primary power input for 
> power inputs other than battery or USB, and this input should have the 
> highest current handling capability of the three.
>
> So far, I find that Vin is approximately worthless.
> Your mileage may vary.
> So far, no reaction or comment from Jason or Robert.
>
> If you can, or can not, duplicate my observations, please comment.
>
> As far as a replacement for  SYS_RESETn, I don't think that the external 
> 3V3 power appears until the system has booted, so you could use this 
> Voltage to gate things that might upset the boot process, or break things 
> prior to the CPU booting.
> At least that is how it worked on the BBB, so I assume the same on the 
> PocketBone.
>
> --- Graham
>
> ==
>
> On Friday, December 8, 2017 at 3:16:45 AM UTC-6, mike.ma...@gmail.com 
> wrote:
>>
>> Nobody an idea? While searching through the board here I find two 
>> different opinions about VDD/where to apply external power to, so some 
>> clarification would be really nice...
>>
>>
>>
>> On Saturday, December 2, 2017 at 6:22:47 PM UTC+1, mike.ma...@gmail.com 
>> wrote:
>>>
>>> Can somebody verify where the following pins/signals can be found at the 
>>> PocketBeagle (comparing to BeagleBone Black):
>>>
>>> - VDD (to supply externel power apart from USB)
>>> - SYS_RESETn (signalling SiP is in reset state and no inputs are allowed 
>>> to be pulled to LOW or HIGH)
>>>
>>> ?
>>>
>>> Thanks!
>>>
>>>
>>>

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[beagleboard] Re: Where are VDD and SYS_RESETn?

[mike . maikaefer]

Nobody an idea? While searching through the board here I find two different 
opinions about VDD/where to apply external power to, so some clarification 
would be really nice...



On Saturday, December 2, 2017 at 6:22:47 PM UTC+1, mike.ma...@gmail.com 
wrote:
>
> Can somebody verify where the following pins/signals can be found at the 
> PocketBeagle (comparing to BeagleBone Black):
>
> - VDD (to supply externel power apart from USB)
> - SYS_RESETn (signalling SiP is in reset state and no inputs are allowed 
> to be pulled to LOW or HIGH)
>
> ?
>
> Thanks!
>
>
>

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Re: [beagleboard] Re: PocketBeagles are Unstable

[mike . maikaefer]

On Sunday, December 3, 2017 at 4:21:33 PM UTC+1, Graham wrote:
>
> The PocketBeagle, when powered only by the Vin input  (P1-pin1) is 
> unstable.
> This is the power supply input, normally assigned to the barrel jack in 
> the BBB, or the AC adapter input in the TI docs.
>
> Not to be confused with the Vi input (P1-pin7) which is connected to Vusb0 
> and Vusb1 on the PocketBeagle.
>

I'm not quite sure but isn't P1/7 the same as VDD on the BBB? In this case 
you definitely shouldn't use P1/1 for powering the board...
 

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[beagleboard] Free StarterWare replacement with support for PocketBeagle

[mike . maikaefer]

If somebody is interested: TI has stopped further development of their bare 
metal support package "StarterWare" but there is a compatible and 
community-driven replacement available at 
https://sourceforge.net/projects/starterwarefree/ now. This project seem to 
contains a bunch of bug fixes the original StarterWare never got and even 
has support for the new PocketBeagle.

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[beagleboard] Re: DDR initialisation on PocketBeagle

[mike . maikaefer]

Finally I could solve the problem: the guys from 
https://sourceforge.net/projects/starterwarefree/ have implemented support 
for PocketBeagle in their MLO. Not sure what the difference is to my code 
but theirs is working smoothly, now my application starts as expected.

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[beagleboard] Where are VDD and SYS_RESETn?

[mike . maikaefer]

Can somebody verify where the following pins/signals can be found at the 
PocketBeagle (comparing to BeagleBone Black):

- VDD (to supply externel power apart from USB)
- SYS_RESETn (signalling SiP is in reset state and no inputs are allowed to 
be pulled to LOW or HIGH)

?

Thanks!


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[beagleboard] DDR initialisation on PocketBeagle

[mike . maikaefer]

Hi,

I'm currently trying to modify the (custom) MLO of my bare metal 
application in order to work with the PocketBeagle. At the moment this MLO 
works fine with BBB.

According to the (incredibly small) manual of the Octavo SoC I changed the 
initialisation of the DDR and EMIF registers - but this does not seem to be 
everything which is necessary.

Now with these register settings my MLO successfully loads the main 
application into the DDR RAM but when the SoC jumps to the start adress of 
it, it stalls. So it seems there is still a problem with the RAM 
initialisation. Either writing the application to the RAM does not work or 
execution of the loaded application is not possible.

What I can see at the moment: the BBB initialisation of the RAM contains a 
lot more than shown in the Octavo manual, there are a lot of idle and 
shut-down states set which are not mentioned in Octavo manual.

So...any idea what else is different in initialisation of BBB and 
PocketBeagle? Are these additional idle/shut-down register settings needed 
too?

Thanks!

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[beagleboard] Low level initialisation steps?

[mike . maikaefer]

Hi,

I'm currently try to run a bare metal application which works fine on the 
BBB on my new PocketBeagle. MLO bootloader works as expected, it loads the 
main application image to addres 0x8000. But when it jumps to this 
address to execute the main application, the whole board stalls.

This lets me think some of the basic hardware initialisations done by the 
bootloader do fit for BBB, but not for PocketBeagle.

So my question: are there some fundamental differences between both? Does 
the Octavo-internal RAM need a different timing than the one on BBB? If 
yes: what exactly is different? Or what else needs to be low-level 
initialised in a different way?

Thanks!

Mike


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Re: [beagleboard] Re: Boot bare metal application - MLO no longer used?

[mike . maikaefer]

OK, I got it: it seems, the Octavo-SoC does NOT support MLO as file on the 
FatSF partition. Writing it into the forst section of the SD card solved 
the problem, now the MLO is found and loaded.

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Re: [beagleboard] Re: Boot bare metal application - MLO no longer used?

[mike . maikaefer]

>
>
> TI has not changes anything in StarterWare since BBB, so I don't expect a 
> new MLO from this side - but it is not a problem since sources are included 
> in StarterWare package and therefor can be build easily.

 
But this does not seem to be the problem, this ""-sequence means, 
the SoC does not find the MLO anywhere! So although it is available on the 
FatFS partition of the microSD card, it isn't loaded.

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[beagleboard] Re: Boot bare metal application - MLO no longer used?

[mike . maikaefer]

OK, short update: the debug header works, I get some data at UART0. But 
there nothing else than CCC is printed, which means the SoC does not 
find a suitable boot-device (although MLO file is in place on microSD 
card). Any ideas what couls cause this?

On Sunday, November 26, 2017 at 4:38:13 PM UTC+1, mike.ma...@gmail.com 
wrote:
>
> Ok, I played a bit more with it: on UART0 I do not get any data, neither 
> with a microSD card inserted (which contains my own MLO) nor without. Is 
> there anything additional neccessary to make it work? Even when there is 
> something wrong with my MLO, I would have expected some output on the 
> serial console.
>
> The MLO itself comes out of the StarterWare package, so it is a 
> self-compiled one which starts my bare metal application (which comes with 
> an other name). So...is there anything which has to be done different for 
> the PocketBeagle? It initialises a lot of peripherals, including SoC clock, 
> RAM timing and other things more...
>
>>
>>>

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[beagleboard] Re: Boot bare metal application - MLO no longer used?

[mike . maikaefer]

Ok, I played a bit more with it: on UART0 I do not get any data, neither 
with a microSD card inserted (which contains my own MLO) nor without. Is 
there anything additional neccessary to make it work? Even when there is 
something wrong with my MLO, I would have expected some output on the 
serial console.

The MLO itself comes out of the StarterWare package, so it is a 
self-compiled one which starts my bare metal application (which comes with 
an other name). So...is there anything which has to be done different for 
the PocketBeagle? It initialises a lot of peripherals, including SoC clock, 
RAM timing and other things more...

>
>>

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[beagleboard] Boot bare metal application - MLO no longer used?

[mike . maikaefer]

Hi,

I'm running a bare metal software on my BBB. It is started via a special 
boot-application, a program named "MLO" located on eMMC card which then 
itself starts my application from microSD card. This is one boot option of 
the AM3358 and used by default.

Now I tried do to the same with the PocketBeagle, in this case with MLO and 
my application both on the microSD card - unfortunately it does not work, 
the application is not started.

My question: is there something fundamental different with the Octavo SoC? 
And is there a serial debug interface available too, similar to the one 
from the BBB where I can see some messages printed to serial console on 
boot?

Thanks!

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[beagleboard] Re: Is it possible to make work the BBB C program code without installing any operating systems?

[mike . maikaefer]

Check out StarterWare from TI (there is also a FreeStarterWare project 
available on sf.net which contains a lot of bugfixes and feature 
enhancements TI never managed to publish). It contains TCP/IP stack, USB 
stack, functions to read/write FatFS on SD-card and many things more - all 
as bare metal without the need to use an operating system and with a lot of 
useful examples.

On Friday, November 17, 2017 at 4:12:38 AM UTC+1, AVR wrote:
>
> Thank you Graham, I completely forgot that I also need and exchange data 
> on TCP/IP... in that case is it possible to realize programmatically TCP/IP 
> without OS ?
>
> четверг, 16 ноября 2017 г., 20:20:30 UTC+5 пользователь Graham написал:
>>
>> Yes, it is possible.
>> Also, probably extremely painful learning experience.
>> There are ARM processors that are designed to run with OS.  They start 
>> with the letter A.
>> The processor in the Beaglebone is an A-8.
>> There are ARM processors that are designed to run without OS. They start 
>> with the letter M.
>>
>> I would suggest that you look at one of the faster M series, like a 200 
>> MHz M4F and see it that will do your job.
>>
>> --- Graham
>>
>> ==
>>
>> On Wednesday, November 15, 2017 at 9:40:05 PM UTC-6, AVR wrote:
>>>
>>> In other words I'd like to make work the BeagleBone Black on the base C 
>>> program code without any operating systems. 
>>> My task is simple enough - frequency meter 0...100 KHz, DI/DO simple 
>>> logic and data exchange accross TCP/IP.
>>>
>>

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[beagleboard] PocketBeagle detailed pinout with pinmux

[mike . maikaefer]

In case somebody is interested in this: attached to my mail you can find a 
detailed pinout of the PocketBeagle expansion header.

This is assembled out of the information of AM3358 TRM and the image given 
in PocketBone GIT repository. It contains all pins including their 
pinmuxable functions (including also all PRU connections)

Please note: this is not yet verified against the real world hardware yet, 
so handle with care.

Mike


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PocketBeagle.ods
Description: application/vnd.oasis.opendocument.spreadsheet

[beagleboard] Re: Weird behaviour with pins and PRUs

[mike . maikaefer]

On Thursday, November 9, 2017 at 2:00:37 PM UTC+1, Loïc Droz wrote:
>
> And I agree this a bad idea because it is a huge waste of computing power. 
> I have tried using the BBB built in PWM pin which, as far as I know, can be 
> configured to be a 50% duty cycle, stable clk signal by following this link 
> : ... But so far as I haven't been able to make it work because the files 
> mentioned there are not present in my kernel (Linux beaglebone 
> 4.4.91-ti-r133 #1 SMP Tue Oct 10 05:18:08 UTC 2017 armv7l GNU/Linux). I 
> would like to use that PWM though, is there a way to do it on the more 
> recent kernels ?
>

I have no idea, I do not use the Hardware from within Linux but out of a 
bare metal firmware...
 

> I could also do both operations on one PRU yes. However, since the audio 
> processing steps involve memory writes to the host, I am worried these 
> might not take deterministic time, which would prevent my clock my clock 
> from being stable.
>
>>
>>
There is some shared memory available where both, PRU and main core have 
access to. Since PRU has the priority for accessing this ram, you can use 
it for a ringbuffer with defined timing which also can be read from the 
main core.

 

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[beagleboard] Re: Weird behaviour with pins and PRUs

[mike . maikaefer]

How about the pin-multiplexing of your two PRU-pins? Are they really 
enabled as PRU in/outputs or are they still mapped to some other functions 
of the main core?

On Wednesday, November 8, 2017 at 9:27:20 PM UTC+1, Loïc Droz wrote:
>
> However, I also need to be able to read the CLK signal from PRU1, so I 
> figured I would plug the CLK signal generated by PRU0 to pin P8.46 which I 
> then poll from PRU1.
>

This seems to be a bad idea in general. For me it looks like you waste 
computing power in PRU1 to retrieve an information PRU0 already has. Can't 
you do both operations on one single PRU? Or use an EHRPWM-output to 
generate the clock in order to not to waste a complete PRU for such a 
stupid task?

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[beagleboard] PocketBeagle / BBB expansion connector pin assignment

[mike . maikaefer]

Hi,

I'm currently evaluating if an existing BBB-design can be used on the new 
PocketBeagle but have some troubles assigning the different signals on 
connector to each other.

I know the BBB Expansion Header pinout 
from https://elinux.org/Beagleboard:Cape_Expansion_Headers and already 
found some similar for the PocketBeagle 
at 
https://raw.githubusercontent.com/wiki/beagleboard/pocketbeagle/images/PocketBeagle_pinout.png

I could identify some of the signals but have troubles with the GPIOs. For 
BBB they are named GPIOb_p where "b" is the GPIO-"bank" and "p" then pin 
number. For the PocketBeagle they are just numbered in range 2..117.

So my question: is there an assignment between these pin numbers available 
where one can find out which PocketBeagle GPIOs belong to which AM3358 GPIO 
signals?

Thanks!

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[beagleboard] BeagleBone Black availability

[mike . maikaefer]

Hi,

during last month I noticed the availability of the BBB is not as good as 
it has been before. Farnell/element14 has more and more increasing lead 
times, currently their stock is empty and they expect next batch earliest 
in more than one month. Circuitco itself does not seem to produce any BBBs.

So: is this board going to die? Is it discontinued because of all these 
strange clones which are out there meanwhile (BBB Wireless, BBB Industrial, 
...)?

Thanks

Mike


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[beagleboard] Re: BeagleBone X15?

[mike . maikaefer]

I second that. Any plans for an upgraded BBB which provides more computing 
power while being compatible to the current hardware interfaces?

On Thursday, November 10, 2016 at 2:09:05 PM UTC+1, Paul Plankton wrote:
>
> No, it is not a typo: but how about a BeagleBone with this new, dual-core 
> processor?
>
> I know, die to it's size it never could have that much peripherals like 
> the BeagleBoard X15, but having the current interfaces plus this processor 
> should not only bring more computing power but also a better price 
> (comparing to BeagleBoard X15).
>
> Just as an idea...
>
>

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[beagleboard] Re: Problems with BBB USB serial communication and Windows 10

[mike . maikaefer]

This is a bug in Windows 10. There are a lot of similar complaints in MSDN 
forums. The bad news: only complaints, the bug never has been fixed by MS.


On Monday, May 29, 2017 at 8:07:45 AM UTC+2, Satz Klauer wrote:
>
> Hi,
>
>
> I'm running a StarterWare 2 based application on an BBB which makes use of 
> a USB serial interface implementation based on the StarterWare example and 
> by using a .inf-File which is similar to "usb_dev_serial.inf" which was 
> provided by TI in same StarterWare package. Of course VID and PID have been 
> changed according to my own USB serial interface implementation.
>
>
> This works well with all Windows-versions up to 7 (8.x was never tested) 
> and also with all Linux variants. But now with Windows 10 there is a 
> problem which was reported by different users of this application:
>
>- opening of the serial interface often fails, simple repeating of the 
>procedure then is successful latest after 10 tries
>- sometimes an already opened connection seem to be corrupted, means 
>there is no more communication possible, host application needs to be 
>closed, device needs to be restarted - but after this, the same COM-port 
> is 
>available again, Windows does not change numbering
>
> So: is anything known about such problems in Windows 10 ? Perhaps are 
> there any changes necessary in an INF-file or in USB serial interface code 
> to make it work with Windows 10? Is there anything similar known from the 
> Linux Kernel of the BBB?
>
>
> Any hint or idea is welcome!
>
>
>
>

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