Re: [beagleboard] Physical Dimensions

[Giuseppe Iellamo]

Ok! Thanks for the reply!

Il giorno mercoledì 25 febbraio 2015 13:35:55 UTC+1, Gerald ha scritto:
>
> AM43xx is not compatible with the AM335x. So if anything were done, it 
> would not be a BeagleBone. At this point, I have no plans to do anything 
> with that devcie.
>
> Gerald
>
> On Wed, Feb 25, 2015 at 1:24 AM, Giuseppe Iellamo  > wrote:
>
>> I know it's maybe too early, but aside the new (and very intresting x15) 
>> is there any plan for a new BeagleBone (am43xx based for example) ?
>>
>> Il giorno lunedì 23 febbraio 2015 13:33:07 UTC+1, Gerald ha scritto:
>>>
>>> Trying to keep it as small as possible, but it takes space for al the 
>>> stuff on the board.
>>>
>>> Gerald
>>>
>>>
>>> On Sat, Feb 21, 2015 at 12:39 PM, Petr Krenzelok  
>>> wrote:
>>>
>>>> OK, thanks for the clarification. I was just curious, if you are again 
>>>> splitting it between the xM kind of board and BBB form factor, e.g. one 
>>>> being a media oriented board, whereas other specialised for the 
>>>> automatition, etc. Anyway - looking forward to the x15 board!
>>>>
>>>> Petr
>>>>
>>>> Dne pátek 20. února 2015 18:28:50 UTC+1 Gerald napsal(a):
>>>>>
>>>>> Well, components take up space. More space is needed for those parts. 
>>>>> Bigger processors 4x memory chips.More expansion pins, two RJ45, three 
>>>>> USB3 
>>>>> connectors, eSATA, two audio jacks.
>>>>>
>>>>> Trust me, there is no open space..
>>>>>
>>>>> Gerald
>>>>>
>>>>>
>>>>> On Fri, Feb 20, 2015 at 8:08 AM, Petr Krenzelok  
>>>>> wrote:
>>>>>
>>>>>> Why so "big"? :-) It is even bigger than xM version. Will there be 
>>>>>> any new version of BBB format in future, or x15 is the new direction?
>>>>>>
>>>>>> Thanks,
>>>>>> Petr
>>>>>>
>>>>>> Dne úterý 2. prosince 2014 19:53:37 UTC+1 Gerald napsal(a):
>>>>>>>
>>>>>>> It is larger than the NUC, About 4.2" x 4".
>>>>>>>
>>>>>>> I will try and get a picture when I can.
>>>>>>>
>>>>>>> Gerald
>>>>>>>
>>>>>>>
>>>>>>> On Tue, Dec 2, 2014 at 10:52 AM, Justin Triplett <
>>>>>>> justin@gmail.com> wrote:
>>>>>>>
>>>>>>>> Hello
>>>>>>>>
>>>>>>>> A few people at my hackerspace are pretty excited for X15.
>>>>>>>>
>>>>>>>> Could we see bottom pics of the current board?
>>>>>>>> I think I see where the expansion headers are, but more pics would 
>>>>>>>> be appreciated.
>>>>>>>>
>>>>>>>> Sounds like it is pretty close to NUC size but not quite, it would 
>>>>>>>> be really awesome if you could pull that off.
>>>>>>>> Either way I'm ready to fire up the laser cutter to make case as 
>>>>>>>> soon as we get all the physical dimensions. :)
>>>>>>>>
>>>>>>>> Thanks!
>>>>>>>>
>>>>>>>> -- 
>>>>>>>> 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...@googlegroups.com.
>>>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> -- 
>>>>>>> Gerald
>>>>>>>  
>>>>>>> ger...@beagleboard.org
>>>>>>> http://beagleboard.org/
>>>>>>> http://circuitco.com/support/
>>>>>>>  
>>>>>>  -- 
>>>>>> For more options, visit http://beagleboard.org/discuss
>>>>>> --- 
>>>>>> You rece

Re: [beagleboard] Physical Dimensions

[Giuseppe Iellamo]

I know it's maybe too early, but aside the new (and very intresting x15) is 
there any plan for a new BeagleBone (am43xx based for example) ?

Il giorno lunedì 23 febbraio 2015 13:33:07 UTC+1, Gerald ha scritto:
>
> Trying to keep it as small as possible, but it takes space for al the 
> stuff on the board.
>
> Gerald
>
>
> On Sat, Feb 21, 2015 at 12:39 PM, Petr Krenzelok  > wrote:
>
>> OK, thanks for the clarification. I was just curious, if you are again 
>> splitting it between the xM kind of board and BBB form factor, e.g. one 
>> being a media oriented board, whereas other specialised for the 
>> automatition, etc. Anyway - looking forward to the x15 board!
>>
>> Petr
>>
>> Dne pátek 20. února 2015 18:28:50 UTC+1 Gerald napsal(a):
>>>
>>> Well, components take up space. More space is needed for those parts. 
>>> Bigger processors 4x memory chips.More expansion pins, two RJ45, three USB3 
>>> connectors, eSATA, two audio jacks.
>>>
>>> Trust me, there is no open space..
>>>
>>> Gerald
>>>
>>>
>>> On Fri, Feb 20, 2015 at 8:08 AM, Petr Krenzelok  
>>> wrote:
>>>
 Why so "big"? :-) It is even bigger than xM version. Will there be any 
 new version of BBB format in future, or x15 is the new direction?

 Thanks,
 Petr

 Dne úterý 2. prosince 2014 19:53:37 UTC+1 Gerald napsal(a):
>
> It is larger than the NUC, About 4.2" x 4".
>
> I will try and get a picture when I can.
>
> Gerald
>
>
> On Tue, Dec 2, 2014 at 10:52 AM, Justin Triplett  > wrote:
>
>> Hello
>>
>> A few people at my hackerspace are pretty excited for X15.
>>
>> Could we see bottom pics of the current board?
>> I think I see where the expansion headers are, but more pics would be 
>> appreciated.
>>
>> Sounds like it is pretty close to NUC size but not quite, it would be 
>> really awesome if you could pull that off.
>> Either way I'm ready to fire up the laser cutter to make case as soon 
>> as we get all the physical dimensions. :)
>>
>> Thanks!
>>
>> -- 
>> For more options, visit http://beagleboard.org/discuss
>> --- 
>> You received this message because you are subscribed to the Google 
>> Groups "BeagleBoard" group.
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>> send an email to beagleboard...@googlegroups.com.
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>>
>
>
>
> -- 
> Gerald
>  
> ger...@beagleboard.org
> http://beagleboard.org/
> http://circuitco.com/support/
>  
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>>>
>>>
>>>
>>> -- 
>>> Gerald
>>>  
>>> ger...@beagleboard.org
>>> http://beagleboard.org/
>>> http://circuitco.com/support/
>>>  
>>  -- 
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>>
>
>
>
> -- 
> Gerald
>  
> ger...@beagleboard.org 
> http://beagleboard.org/
> http://circuitco.com/support/
>  

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Re: [beagleboard] Official eQEP driver Support

[Giuseppe Iellamo]

I'm using it but in order to be fast ( I know it's not very linux style ... 
but )

Set up

#ifdef __arm__

#define MAP_SIZE 4096UL //< Constant used for the memory mapping of the eqep
#define MAP_MASK (MAP_SIZE - 1)

// mmaping device register in order to speed up things
if((fd = open("/dev/mem", O_RDWR | O_SYNC)) == -1)
{
LOG(logFATAL) << " Unable to open /dev/mem";
exit(-1);
}

map_base = mmap(0, MAP_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd,
(eqepMap.at(channel).phAddress) & ~MAP_MASK );
if(map_base == (void *) -1) {
LOG(logFATAL) << " Unable to mmap eqep";
exit(-1);
}

virt_addr = map_base + ((eqepMap.at(channel).phAddress) & MAP_MASK);
#endif

Read Position

inline int32_t get_position_fast() { return *((int32_t *) virt_addr); } ///< 
not really clean but performing






Il giorno giovedì 17 aprile 2014 20:46:32 UTC+2, William Hermans ha scritto:
>
> Strawson, best thing I personally can think of, would be to use two or 
> more pointers to the same file, and rotate between them. Closing one down 
> while the other continues operating.
>
>
> On Thu, Apr 17, 2014 at 11:09 AM, Robert Nelson 
> 
> > wrote:
>
>> On Thu, Apr 17, 2014 at 12:30 PM, Strawson > 
>> wrote:
>> > Hello all,
>> >
>> > In an effort to make use of the eQEP modules on the beaglebone black we
>> > stumbled across the following encoder patch and were able to compile a
>> > loadable kernel module with the help of TI. Hopefully this will make 
>> its way
>> > to the "thirdparty" script in the debian build farm so the community 
>> can use
>> > this without recompiling
>> >
>> > https://github.com/Teknoman117/beaglebot/tree/master/encoders
>>
>> It looks pretty self-contained, i have no problem adding to the
>> current kernel patches..
>>
>> > I would like to make known a bug we ran into with reading the eQEP 
>> module
>> > that resulted in position values not updating after exactly 1020 reads
>> > without closing the file pointer. If the file pointer is closed and
>> > re-opened for every read, the behavior is normal, but opening/closing 
>> the
>> > file is painfully slow. I unfortunately don't really know where to begin
>> > with finding and fixing this problem, but any insight would be 
>> appreciated.
>>
>>
>> yikes, it still needs a little work then..
>>
>> Regards,
>>
>> --
>> Robert Nelson
>> http://www.rcn-ee.com/
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
>> ---
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>>
>
>

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Re: [beagleboard] [BBB] PRUSS and EPWM and EQEP

[Giuseppe Iellamo]

Thanks! 

I am still a little confused by the way PRUSS integrates with main core...

Il giorno venerdì 21 marzo 2014 15:32:07 UTC+1, Charles Steinkuehler ha 
scritto:
>
> Of course you can do this.  The base addresses are even hard-coded in 
> the constant table to make it easier/faster to directly talk to the PWM 
> hardware with the PRU. 
>
> On 3/21/2014 9:24 AM, Giuseppe Iellamo wrote: 
> > Hi all, 
> > 
> > I've seen that many used PRUSS in order to generate the PWM signal 
> needed 
> > to drive DC motors... 
> > Given that on the sitara already has there are the controllers that do 
> it 
> > in HW, I was wondering if it is feasible to program the PWMSS subsystem 
> of 
> > the Sitara, driving it from within the PRUSS implementing here the PID 
> > controller, minimizing the intervention of the ARM core on the low level 
> > motor control. 
> > 
> > Giuseppe 
> > 
> > 
>
>
> -- 
> Charles Steinkuehler 
> cha...@steinkuehler.net  
>

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[beagleboard] [BBB] PRUSS and EPWM and EQEP

[Giuseppe Iellamo]

Hi all,

I've seen that many used PRUSS in order to generate the PWM signal needed 
to drive DC motors... 
Given that on the sitara already has there are the controllers that do it 
in HW, I was wondering if it is feasible to program the PWMSS subsystem of 
the Sitara, driving it from within the PRUSS implementing here the PID 
controller, minimizing the intervention of the ARM core on the low level 
motor control.

Giuseppe


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Re: [beagleboard] Re: Availability - how come nobody has any BeagleBone Black to sell?

[Giuseppe Iellamo]

I was Just wondering.

Given that, to my understanding, Arduino Tre (with essentialy a Black 
inside) will be a commercial product do you think we can  expect it to 
bemuch  more widely available?

Il giorno mercoledì 19 marzo 2014 18:52:15 UTC+1, Gerald ha scritto:
>
> How about that.
>
> Gerald
>
>
>
> On Wed, Mar 19, 2014 at 12:50 PM, Brad Hopper 
> > wrote:
>
>> BTW, just got an in stock email from Adafruit a few minutes ago and 
>> ordered one. Go get it!
>>
>>
>> On Wednesday, March 19, 2014 10:21:45 AM UTC-4, dwfunk4475 wrote:
>>
>>> Adafruit is very good with the email notification that items are now in 
>>> stock.  If someone is serious about buying, they can get one when the email 
>>> arrives. I've used that option a number of times.
>>>
>>>
>>>
>>>
>>> -david
>>>
>>>
>>>
>>> On Wed, Mar 19, 2014 at 8:00 AM, Gerald Coley wrote:
>>>
 http://www.elinux.org/Beagleboard:BeagleBoneBlack#Board_Shipments

 Gerald 

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

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Re: [beagleboard] Re: Availability - how come nobody has any BeagleBone Black to sell?

[Giuseppe Iellamo]

Just to say...

My three boards arrived... after just six week not so orrible as I feared...

Il giorno giovedì 13 marzo 2014 18:08:37 UTC+1, Todd Riffel ha scritto:
>
> I'm guessing the capes Seeed Studio seels are Chinese clones too?  I was 
> thinking of buying their LCD7 cape for their $89 price.
>
>
> On Thursday, March 13, 2014 11:07:20 AM UTC-5, Jacek Radzikowski wrote:
>>
>> I've just got a product update from Seeed Studio. They sell Chinese 
>> clones of BBB. For $69 apiece.
>>
>>
>> j.
>>
>>
>>
>> On Thu, Mar 13, 2014 at 10:41 AM, Eric Palmer wrote:
>>
>>> In two months I have been able to get 3.  2 off this list when someone 
>>> announces when some suppliers have them in stock. 
>>>
>>> Eric
>>>
>>>
>>> On Thu, Mar 13, 2014 at 10:30 AM, David Funk  wrote:
>>>
 You get them by ordering them and waiting.  That's how I got mine.


 -david


 On Thu, Mar 13, 2014 at 3:58 AM, Satz Klauer 
 wrote:

> On Wed, Mar 12, 2014 at 3:08 PM, David Funk  wrote:
> > and then the boards would not be available for it's intended market.
>
> Hm...where is the difference to current situation? While reading this
> thread from the beginning it seems for me the produced boards got lost
> and nobody knows where...
>



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>>>
>>>
>>>
>>> -- 
>>> Eric Palmer
>>>  
>>> -- 
>>> For more options, visit http://beagleboard.org/discuss
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>>>
>>
>>
>>
>> -- 
>> Given a choice between two theories, take the one which is funnier 
>>
>

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Re: [beagleboard] Re: Availability - how come nobody has any BeagleBone Black to sell?

[Giuseppe Iellamo]

And then three board arrived me!!!

Yahooo!

Il giorno mercoledì 12 marzo 2014 15:08:33 UTC+1, dwfunk4475 ha scritto:
>
> and then the boards would not be available for it's intended market.
>
>
>
>
> -david
>
>
> On Wed, Mar 12, 2014 at 5:20 AM, Satz Klauer 
> 
> > wrote:
>
>> On Tue, Mar 11, 2014 at 4:45 PM, acheesehead 
>> > 
>> wrote:
>> > We would be willing to pay more. We have a lot of applications for the
>> > board.
>>
>> Same here. A cheap board that is not available is valueless, so a
>> higher price would be the better solution IMHO.
>>
>
>
>
>
>
>

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Re: [beagleboard] Re: Availability - how come nobody has any BeagleBone Black to sell?

[Giuseppe Iellamo]

Just to say 

our order on RS (italy) placed one month ago got cancelled. And now they 
say it will be available on July. 


Il giorno giovedì 27 febbraio 2014 15:30:03 UTC+1, Gerald ha scritto:
>
> I will continue to show shipment numbers per day. Nothing more.
>
> Gerald
>
>
>
> On Thu, Feb 27, 2014 at 8:27 AM, Anil Gupta 
> > wrote:
>
>> I would once again request that as many facts as possible be published 
>> regularly.  It can be weekly shipments by region, and known backlog, as 
>> inaccurate as the latter might be.  In a difficult situation, without 
>> facts, anecdotes and stories will take over.
>>
>> As an anecdote: Adafruit doesn't take back orders--they just notify you 
>> when the product is in stock.  They've shown zero availability continuously 
>> since Jan 29.
>>
>>
>> On Thu, Feb 27, 2014 at 7:47 PM, Gerald Coley 
>> 
>> > wrote:
>>
>>> 26 week times is not true. That is what the computer systems spits out 
>>> to show when the WHOLE PO is filled!
>>>
>>> We are shipping daily as you can clearly see!!
>>>
>>> Gerald
>>>
>>>
>>>
>>> On Wed, Feb 26, 2014 at 11:53 PM, Venkat Bommakanti 
>>> 
>>> > wrote:
>>>
 Just got an email alert - 26 week backorder time !
 Great (unfair) free market forces in play ;!)
 We definitely don't see the member count of grps such as this swell at 
 these rates...
 We need some semblance of fairness here, no ;?)

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>>>
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>
>

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Re: [beagleboard] BBB + PREEMPT_RT

[Giuseppe Iellamo]

Or just try Xenomai...

https://github.com/cdsteinkuehler/linux-dev/tree/3.8.13-bone39-xenomai


Il giorno venerdì 21 febbraio 2014 11:03:24 UTC+1, David Goodenough ha 
scritto:
>
> On Friday 21 February 2014 00:20:39 quik...@gmail.com wrote: 
> > I am trying to figure out how to create a kernel for the BBB that 
> supports 
> > PREEMPT_RT. It's kind of strange that the BBB's default kernel does not 
> > even have PREEMPT activated. Such a board doesn't fit to many embedded 
> > applications where we need at least some kind of determinism. It is even 
> > worse, that nobody seems to care about this problem. Contrary to that, 
> the 
> > Raspberry PI's standard kernel has PREEMPT activacted from the very 
> > beginning. 
> > 
> > I have tested Robert Nelsons kernel 3.8.13-r9 
> > (https://github.com/beagleboard/kernel/tree/3.8-rt). It does not have 
> > PREEMPT_RT activated by default. When doing so, it does not boot. But 
> > activating PREEMPT does work. However, development of this branch has 
> > stopped several months ago. The official source for RT Linux (3.8.13) 
> has 
> > evolved since then. Meanwhile there's an rt17 patch set 
> > (https://www.kernel.org/pub/linux/kernel/projects/rt/3.8/). Did anybody 
> > give this a try? Does it work with the BBB? 
> Surely the point of the Beaglebone, or rather its processor, is that you 
> do not need to put the time critical bits on the main processor, you put 
> them in the PRUSS processors. 
>
> David 
>

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Re: [beagleboard] Xenomai master -> BBB RCNelson 3.13-bone5 kernel patches

[Giuseppe Iellamo]

Just follow this guide 

http://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-SerialLogin

Il giorno giovedì 13 febbraio 2014 10:52:03 UTC+1, dlewin555 ha scritto:
>
> well not really, it didn't succeeded unlesse the following is wrong:
>
> flashing :
>
> rcn-ee.net/deb/microsd/wheezy/bone-debian-7.3-2014-01-24-2gb.img.xz
>
> and then overwrite 
>
> scp ../xenomai/cdsteinkuehler/linux-dev/deploy/3.8.13xenomai-bone39.zImage 
>> root@192.168.7.2:/boot/uboot/zImage
>
>
> This, allows to boot the board - leds are ok - but  in a way that I can't 
>
>- ssh to it as 192.168.7.2  
>- ssh to it with a dhcp server running  with ETH connected
>- retrieved any status with my usb serial cable 
>
>
>
>
> 2014-02-12 19:28 GMT+01:00 John Syn >:
>
>>
>> From: David Lewin >
>> Reply-To: >
>> Date: Wednesday, February 12, 2014 at 5:49 AM
>> To: >
>>
>> Subject: Re: [beagleboard] Xenomai master -> BBB RCNelson 3.13-bone5 
>> kernel patches
>>
>> In other words : what zImage version should I use that would correspond 
>> to a specific Debian version ?
>>
>> The zImage you build with Charles’ repo can be used with the Robert’s 
>> latest Debian build.
>>
>> Regards,
>> John
>>
>>
>>
>> 2014-02-12 10:47 GMT+01:00 David Lewin >:
>>
>>> Indeed, that was my point previously. Thus, as now I m with the Charles' 
>>> image, what should 
>>> 3.8.13xenomai-bone39
>>> correspond to Debian one to swap kernel to ?
>>>
>>>
>>>
>>>
>>> 2014-02-11 19:49 GMT+01:00 John Syn >:
>>>
>>>
  From: Robert Nelson >
 Reply-To: >
 Date: Tuesday, February 11, 2014 at 6:26 AM
 To: Beagle Board >

 Subject: Re: [beagleboard] Xenomai master -> BBB RCNelson 3.13-bone5 
 kernel patches




 On Tue, Feb 11, 2014 at 8:12 AM, David Lewin 
 
 > wrote:

> This doens't work neither : 
>
>- git clone https://github.com/cdsteinkuehler/linux-dev
>- git checkout --track -b 3.8.13-bone39-xenomai
>
> git status : 
> # On branch 3.8.13-bone39-xenomai
> nothing to commit (working directory clean)
>
>
>- ./build_kernel.sh :
>
> generates a  *3.11.0-rc1-armv7-d1.zImage*
>

 Lets... see..


 https://github.com/cdsteinkuehler/linux-dev/blob/3.8.13-bone39-xenomai/version.sh#L32

 branch/tag: 3.8.13-bone39-xenomai
 build: BUILD=bone39

 Just checkout the branch like a normal user.


- git clone https://github.com/cdsteinkuehler/linux-dev 
- git checkout origin/3.8.13-bone39-xenomai -b 
some_local_temp_branch_name

 Hi Robert,

 This would be the easiest solution, but Charles doesn’t always keep up 
 to date with your latest patches. Last I checked, Charles was still at 
 bone36 when you were at bone41. The way I do this is to checkout both your 
 linux-dev and Charles linux-dev and then use BeyondCompare to update your 
 repo with the xenomai changes from Charles repo. I only have to do this 
 once and thereafter, I simply pull from your updates and I get the latest 
 updates. 

 I understand that I should be able to track both repos using GIT, and 
 get updates from both, but I don’t know how to do this.

 Regards,
 John 


 Regards,

 -- 
 Robert Nelson
 http://www.rcn-ee.com/

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Re: [beagleboard] Read current register values in BBB during OS running

[Giuseppe Iellamo]

If they are memory mapped register you can also use a tool like devmem2 or 
mmap yourself the register to access them directly.

This is not real linux style and a bit dangerous and certainly not portable 
at all-- but you can do it

Il giorno domenica 9 febbraio 2014 23:07:44 UTC+1, john3909 ha scritto:
>
>
> From: vinayak aghor >
> Reply-To: >
> Date: Saturday, February 8, 2014 at 7:27 PM
> To: >
> Subject: [beagleboard] Read current register values in BBB during OS 
> running
>
> hello All,
> I want to read current register values in downloaded OS (Angstrom) in BBB. 
> for ex. register value set for DDR3 clk, write levelling register values 
> ectc. 
>
> Can we read while OS is running?
>
> You have to create a Kernel Module to do this. Reading is OK, but don’t 
> think of writing to any of these registers as that may conflict with other 
> kernel code. 
>
> Regards,
> John
>
>
>
>
> Regards,
> Vinayak
>
> -- 
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Re: [beagleboard] Re: Availability - how come nobody has any BeagleBone Black to sell?

[Giuseppe Iellamo]

Maybe the world is a little bigger than Marietta ;-)

Distributors in Italy (RS components, Mouser, Farnell) are still without 
boards. RS says you can reserve boards for April...

Il giorno mercoledì 5 febbraio 2014 01:11:27 UTC+1, Ronny Julian ha scritto:
>
> Guess no one saw my comment because Microcenter in Marietta GA still had 
> two on the shelf again today.
>
>
> On Tue, Feb 4, 2014 at 9:28 AM, Paul Tan  >wrote:
>
>> I have some in stock if anyone needs them.  
>>
>> http://exadler.myshopify.com/products/beaglebone-black
>>
>> Paul Tan.
>> Exadler Technologies Inc.
>>
>>
>> On Wednesday, January 29, 2014 6:33:58 PM UTC-5, Ronny Julian wrote:
>>>
>>> I saw 3 on the shelf at Microcenter in  Marietta GA
>>>
>>>
>>> On Wed, Jan 29, 2014 at 4:38 PM, GauchoMan  wrote:
>>>
 Gerald,

 I see on http://www.elinux.org/Beagleboard:BeagleBoneBlack#
 Board_Shipments that there have been 11,375 shipped so far in January.
 I have had Qty 1 on back-order from Digikey since Jan 13th. I would 
 have assumed that enough boards must have shipped to Digikey this month to 
 cover back orders, and yet I am still waiting for one board?

 Any clues as to what is happening here?

 Regards,
 Gord Finlay

 On Monday, January 20, 2014 5:19:20 AM UTC-8, Gerald wrote:
>
> We are shipping boards as you can see form the daily updates on the 
> support Wiki. They go to the distributors. They fill their back orders. 
> No 
> stock shows up because they are going to fill the back orders.
>
> When the distributors have extra boards, they will then show up as 
> having inventory.
>
> Gerald
>
>
>
> On Sun, Jan 19, 2014 at 3:46 PM,  wrote:
>
>> Have there been any 'official announcements' about the lack of stock 
>> yet?
>>
>>
>>  -- 
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>>>
>>>  -- 
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Re: [beagleboard] Re: Availability - how come nobody has any BeagleBone Black to sell?

[Giuseppe Iellamo]

Maybe the world is a little bigger than Marietta ;-)

Il giorno mercoledì 5 febbraio 2014 01:11:27 UTC+1, Ronny Julian ha scritto:
>
> Guess no one saw my comment because Microcenter in Marietta GA still had 
> two on the shelf again today.
>
>
> On Tue, Feb 4, 2014 at 9:28 AM, Paul Tan  >wrote:
>
>> I have some in stock if anyone needs them.  
>>
>> http://exadler.myshopify.com/products/beaglebone-black
>>
>> Paul Tan.
>> Exadler Technologies Inc.
>>
>>
>> On Wednesday, January 29, 2014 6:33:58 PM UTC-5, Ronny Julian wrote:
>>>
>>> I saw 3 on the shelf at Microcenter in  Marietta GA
>>>
>>>
>>> On Wed, Jan 29, 2014 at 4:38 PM, GauchoMan  wrote:
>>>
 Gerald,

 I see on http://www.elinux.org/Beagleboard:BeagleBoneBlack#
 Board_Shipments that there have been 11,375 shipped so far in January.
 I have had Qty 1 on back-order from Digikey since Jan 13th. I would 
 have assumed that enough boards must have shipped to Digikey this month to 
 cover back orders, and yet I am still waiting for one board?

 Any clues as to what is happening here?

 Regards,
 Gord Finlay

 On Monday, January 20, 2014 5:19:20 AM UTC-8, Gerald wrote:
>
> We are shipping boards as you can see form the daily updates on the 
> support Wiki. They go to the distributors. They fill their back orders. 
> No 
> stock shows up because they are going to fill the back orders.
>
> When the distributors have extra boards, they will then show up as 
> having inventory.
>
> Gerald
>
>
>
> On Sun, Jan 19, 2014 at 3:46 PM,  wrote:
>
>> Have there been any 'official announcements' about the lack of stock 
>> yet?
>>
>>
>>  -- 
>> For more options, visit http://beagleboard.org/discuss
>> --- 
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>>
>
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>>>
>>>  -- 
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>
>

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[beagleboard] Re: Availability - how come nobody has any BeagleBone Black to sell?

[Giuseppe Iellamo]

It doesn't seem that using BBC on a commercial project is an infringement to 
the term of use. There is only a warning...  

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[beagleboard] Re: Availability - how come nobody has any BeagleBone Black to sell?

[Giuseppe Iellamo]

It doesn't seem that using BBC on a commercial project is an infringement to 
the term of use. There is only a warning...  

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Re: [beagleboard] BBB and ftdi problem

[Giuseppe Iellamo]

I think he is using usb to ttl converter like with the FTDI on chip...
I'm using it with different RCnelson kernels (3.8 - 3.12) and it works 
seamless

Il giorno lunedì 20 gennaio 2014 16:55:59 UTC+1, lazarman ha scritto:
>
> Black has no FTDI 
>
> Sent from Yahoo Mail on 
> Android
>   
>  --
> * From: * Krazeebee Saboo >; 
> * To: * >; 
> * Subject: * [beagleboard] BBB and ftdi problem 
> * Sent: * Fri, Jan 17, 2014 4:44:21 PM 
>  
>   Hi
> I finished my first Android from 
> http://processors.wiki.ti.com/index.php/TI-Android-JB-4.2.2-DevKit-4.1.1_DeveloperGuidebut
>  i can't connect my usb to serial (using ftdi chip) to USB host on BBB. 
> I try to re build kernel and enable device driver in kconfig but still not 
> working . Please help
>
> -- 
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Re: [beagleboard] Re: JavaFX 8 on BeagleBone Black (SGX driver problem?)

[Giuseppe Iellamo]

And it worked!

Thank you very much John and Robert!

Now I'm heading to QT5 realm!



Il giorno giovedì 9 gennaio 2014 21:50:46 UTC+1, john3909 ha scritto:
>
>
> From: Giuseppe Iellamo >
> Reply-To: >
> Date: Thursday, January 9, 2014 at 8:11 AM
> To: >
> Subject: [beagleboard] Re: JavaFX 8 on BeagleBone Black (SGX driver 
> problem?)
>
> Sorry I can't help you but maybe you can help me.
>
> I'm using your exact configuration...
>
> But I still read 
>
>
>
>
>
>
>
> *root@arm:/opt/Graphics_SDK_setuplinux_5_00_00_01/gfxsdkdemos/ogles2# 
> ./OGLES2ChameleonMan PVRShell: EGL 1.4 initializedExit message has been set 
> to: "PVRShell: Unable to create surface".InitAPI failed!PVRShell: Unable to 
> create surface*
> I've loaded the modules, I've installe the libraries in 
> *gfx_rel_es8.x*
>
> Please tell me what did you load from the Graphics SDK?
>
> Hi Giuseppe,
>
> Here is what I did to make this work:
>
> Download the Graphics SDK from here:
>
>
> http://software-dl.ti.com/dsps/dsps_public_sw/gfxsdk/5_01_00_01/index_FDS.html
>
> Use the hardfp version if you are using Debian.
>
> Make the file executable and install. Update the Rules.make file to 
> reflect your environment. Here is an example:
> =
> #  is your login userid
> HOME=/home/
>
> # Set Toolchain path. I installed Linaro via apt-get install 
> arm-linux-gnueabihf-gcc
> CSTOOL_DIR=/usr
>
> # Set Tool chain prefix (ex arm-arago-linux-gnueabi- )
> CSTOOL_PREFIX=arm-linux-gnueabihf-
>
> # Set kernel installation path ( ex /home/user/linux-04.00.01.13 )
> KERNEL_INSTALL_DIR=${HOME}/GIT/linux-dev-3.12/KERNEL
>
> # Set Target filesystem path ( ex /home/user/targetfs )
> TARGETFS_INSTALL_DIR=/mnt//rootfs
>
> # Set installation folder
> GRAPHICS_INSTALL_DIR=${HOME}/Graphics/Graphics_SDK_5_01_00_01_hardfp
> ==
>
> Host > make BUILD=release OMAPES=8.x PM_RUNTIME=1 all
> # Insert SDCARD and I’m assuming the rootfs is mounted at 
> /mnt//rootfs from Rules.make file above
> Host > sudo make BUILD=release OMAPES=8.x PM_RUNTIME=1 install
>
> After you boot your BBB, run
> BBB > sudo /etc/init.d/335x-demo
> # Reboot
> BBB > sudo /etc/init.d/rc.pvr start
>
> Now run the demos and everything should work fine.
>
> Regards,
> John
>
>
>
> Il giorno giovedì 9 gennaio 2014 10:40:35 UTC+1, littlef...@gmail.com ha 
> scritto:
>>
>> Hello,
>>
>> I am trying to run the newest JavaFX 8 snapshot release on the beaglebone 
>> black. So far I haven't got it running, the debug output shows the 
>> following:
>>
>> Multi-Threading Enabled
>> Prism pipeline init order: es2 
>> Using platform text rasterizer
>> Using java-based Pisces rasterizer
>> Using dirty region optimizations
>> Not using texture mask for primitives
>> Not forcing power of 2 sizes for textures
>> Using hardware CLAMP_TO_ZERO mode
>> Opting in for HiDPI pixel scaling
>> Prism pipeline name = com.sun.prism.es2.ES2Pipeline
>> Loading ES2 native library ... prism_es2_eglfb
>> Loaded /opt/jdk1.8.0/jre/lib/ext/../arm/libprism_es2_eglfb.so from 
>> relative path
>> succeeded.
>> GLFactory using com.sun.prism.es2.EGLFBGLFactory
>> *eglGetConfigAttrib failed!(X)* Got class = class 
>> com.sun.prism.es2.ES2Pipeline
>> GraphicsPipeline.createPipeline: error initializing pipeline 
>> com.sun.prism.es2.ES2Pipeline
>> Graphics Device initialization failed for :  es2
>> Error initializing QuantumRenderer: no suitable pipeline found
>>
>>
>> What I've done:
>>
>> - Installed the Ubuntu 13.10 image from Robert C Nelson (
>> https://rcn-ee.net/deb/rootfs/saucy/ubuntu-13.10-console-armhf-2013-12-17.tar.xz
>> )
>> - Compiled the kernel from 
>> https://github.com/RobertCNelson/linux-dev/tree/am33x-v3.12 and 
>> installed it
>> - Used the 
>> sgx_build_modules.sh<https://github.com/RobertCNelson/linux-dev/blob/am33x-v3.12/sgx_build_modules.sh>script
>>  from the git repo above to download and compile the SGX drivers
>> - Copied the drivers to the SD card and installed it on the BBB
>> - I had to manually load the omaplfb module, as it doesn't seem to be 
>> loaded automatically (bufferclass_ti and pvrsrvkm are loaded automatically)
>> - After that, the SDK demos (OGLES2ChameleonMan and OGLES2MagicLantern) 
>> seem to work fine
>> - When starting a JavaFX application, it fails during startup with the 
>> log mentioned above (tried to enable all possible debug output)
>>

[beagleboard] Re: JavaFX 8 on BeagleBone Black (SGX driver problem?)

[Giuseppe Iellamo]

Sorry I can't help you but maybe you can help me.

I'm using your exact configuration...

But I still read 







*root@arm:/opt/Graphics_SDK_setuplinux_5_00_00_01/gfxsdkdemos/ogles2# 
./OGLES2ChameleonMan PVRShell: EGL 1.4 initializedExit message has been set 
to: "PVRShell: Unable to create surface".InitAPI failed!PVRShell: Unable to 
create surface*
I've loaded the modules, I've installe the libraries in 
*gfx_rel_es8.x*

Please tell me what did you load from the Graphics SDK?

Il giorno giovedì 9 gennaio 2014 10:40:35 UTC+1, littlef...@gmail.com ha 
scritto:
>
> Hello,
>
> I am trying to run the newest JavaFX 8 snapshot release on the beaglebone 
> black. So far I haven't got it running, the debug output shows the 
> following:
>
> Multi-Threading Enabled
> Prism pipeline init order: es2 
> Using platform text rasterizer
> Using java-based Pisces rasterizer
> Using dirty region optimizations
> Not using texture mask for primitives
> Not forcing power of 2 sizes for textures
> Using hardware CLAMP_TO_ZERO mode
> Opting in for HiDPI pixel scaling
> Prism pipeline name = com.sun.prism.es2.ES2Pipeline
> Loading ES2 native library ... prism_es2_eglfb
> Loaded /opt/jdk1.8.0/jre/lib/ext/../arm/libprism_es2_eglfb.so from 
> relative path
> succeeded.
> GLFactory using com.sun.prism.es2.EGLFBGLFactory
> *eglGetConfigAttrib failed!(X)* Got class = class 
> com.sun.prism.es2.ES2Pipeline
> GraphicsPipeline.createPipeline: error initializing pipeline 
> com.sun.prism.es2.ES2Pipeline
> Graphics Device initialization failed for :  es2
> Error initializing QuantumRenderer: no suitable pipeline found
>
>
> What I've done:
>
> - Installed the Ubuntu 13.10 image from Robert C Nelson (
> https://rcn-ee.net/deb/rootfs/saucy/ubuntu-13.10-console-armhf-2013-12-17.tar.xz
> )
> - Compiled the kernel from 
> https://github.com/RobertCNelson/linux-dev/tree/am33x-v3.12 and installed 
> it
> - Used the 
> sgx_build_modules.shscript
>  from the git repo above to download and compile the SGX drivers
> - Copied the drivers to the SD card and installed it on the BBB
> - I had to manually load the omaplfb module, as it doesn't seem to be 
> loaded automatically (bufferclass_ti and pvrsrvkm are loaded automatically)
> - After that, the SDK demos (OGLES2ChameleonMan and OGLES2MagicLantern) 
> seem to work fine
> - When starting a JavaFX application, it fails during startup with the log 
> mentioned above (tried to enable all possible debug output)
>
>
> I've found the error string in the OpenJFX sources, but to get more 
> information, I'd need to create a debug build of the prism-es2 module (or 
> maybe from the whole OpenJDK), which at this point I don't know how to do. 
> Maybe somebody knows what the problem might be.
>
> From 
> /rt/modules/graphics/src/main/native-prism-es2/eglfb/EGLFBGLFactory.c:
>
> ...
> if (!eglChooseConfig(egldisplay, eglAttrs, &config, 1, &numconfigs)) {
> fprintf(stderr, "Failed to get a FBconfig with requested attrs\n");
> //cleanup
> return 0;
> }
>
> #ifdef DEBUG
> printf("eglChooseConfig return %d configs\n", numconfigs);
> #endif
>
> if (!eglGetConfigAttrib(egldisplay, config, EGL_CONFIG_ID, &configId)) 
> {
> fprintf(stderr, "*eglGetConfigAttrib failed!*");
> return 0;
> }
>
> #ifdef DEBUG
> printf("EGL: Using config #%d\n", configId);
> printConfig(egldisplay, config);
> #endif
> ...
>
>
> Regards,
> Michael
>
>
>
>
>
>
>

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Re: [beagleboard] SGX drivers on Kernel 3.8.13

[Giuseppe Iellamo]

I've seen the script is not really complete infact I tried to pick the demo 
files from the ignore directory... maybe I forgot something.



Il giorno mercoledì 8 gennaio 2014 21:05:36 UTC+1, RobertCNelson ha scritto:
>
> On Wed, Jan 8, 2014 at 2:03 PM, John Syne > 
> wrote: 
> > 
> > On 1/8/14, 5:45 AM, "Robert Nelson" > 
> wrote: 
> > 
> >>On Wed, Jan 8, 2014 at 4:54 AM, Giuseppe Iellamo 
> >>> 
>
> >>wrote: 
> >>> I built the kernel successfully and installed it and now if I try with 
> >>>the 
> >>> demo included in GFX sdk I get: 
> >>> 
> >>> ubuntu@arm:~/Graphics_SDK_setuplinux_5_00_00_01/gfxsdkdemos/ogles2$ 
> sudo 
> >>> ./OGLES2ChameleonMan 
> >>> [sudo] password for ubuntu: 
> >>> PVRShell: EGL 1.4 initialized 
> >>> Exit message has been set to: "PVRShell: Unable to create surface 
> >>> ". 
> >>> InitAPI failed! 
> >>> PVRShell: Unable to create surface 
> >> 
> >>Yeah.. the "5_00_00_01" drivers are useless for anyone not running 
> >>qt's display manager.. 
> > The demos run fine for me. The default SDK places the demos in /opt 
> > 
> > You need to run the following first: 
> > 
> > sudo /etc/init.d/rc.pvr start 
> > 
> > Then I run the demo as follows: 
> > 
> > cd /opt/gfxsdkdemos/ogles2 
> > ./OGLES2ChameleonMan 
>
> i think part of the problem, i haven't exactly finished the "install" 
> part of the sgx build script... so other then building stuff, it 
> doesn't finish the install.. 
>
> btw, noticed 5_10_00_01 was out, but can't find the link at the 
> moment.. wonder what was fixed.. 
>
> Regards, 
>
> -- 
> Robert Nelson 
> http://www.rcn-ee.com/ 
>

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Re: [beagleboard] SGX drivers on Kernel 3.8.13

[Giuseppe Iellamo]

D'oh!

I thought it was "only" Xorg not working!

Thanks for the reply... 


Il giorno mercoledì 8 gennaio 2014 14:45:10 UTC+1, RobertCNelson ha scritto:
>
> On Wed, Jan 8, 2014 at 4:54 AM, Giuseppe Iellamo 
> > 
> wrote: 
> > I built the kernel successfully and installed it and now if I try with 
> the 
> > demo included in GFX sdk I get: 
> > 
> > ubuntu@arm:~/Graphics_SDK_setuplinux_5_00_00_01/gfxsdkdemos/ogles2$ sudo 
> > ./OGLES2ChameleonMan 
> > [sudo] password for ubuntu: 
> > PVRShell: EGL 1.4 initialized 
> > Exit message has been set to: "PVRShell: Unable to create surface 
> > ". 
> > InitAPI failed! 
> > PVRShell: Unable to create surface 
>
> Yeah.. the "5_00_00_01" drivers are useless for anyone not running 
> qt's display manager.. 
>
> Regards, 
>
> -- 
> Robert Nelson 
> http://www.rcn-ee.com/ 
>

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Re: [beagleboard] SGX drivers on Kernel 3.8.13

[Giuseppe Iellamo]

I built the kernel successfully and installed it and now if I try with the 
demo included in GFX sdk I get:

ubuntu@arm:~/Graphics_SDK_setuplinux_5_00_00_01/gfxsdkdemos/ogles2$ *sudo 
./OGLES2ChameleonMan *
[sudo] password for ubuntu: 
PVRShell: EGL 1.4 initialized
Exit message has been set to: "PVRShell: Unable to create surface
".
InitAPI failed!
PVRShell: Unable to create surface

ubuntu@arm:~$ *uname -a*
Linux arm 3.12.6-bone11.1 #1 SMP Wed Jan 8 10:47:12 CET 2014 armv7l armv7l 
armv7l GNU/Linux

ubuntu@arm:~$ *lsmod*
Module  Size  Used by
omaplfb10139  0 
bufferclass_ti  5803  0 
snd_soc_omap2834  0 
snd_pcm_dmaengine   6073  1 snd_soc_omap
pvrsrvkm  178420  2 bufferclass_ti,omaplfb

Any suggestion?

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Re: [beagleboard] SGX drivers on Kernel 3.8.13

[Giuseppe Iellamo]

Hi Olof, 

I'm Struggling with this SGX stuff,
I'm building the Robert kernel and it seems to work, but in the Graphics 
SDK 5_01_00_01 instructions it says* Ensure that the NFS target is setup *

What NFS target have you used??

Thanks,
Giuseppe

Il giorno domenica 5 gennaio 2014 13:29:11 UTC+1, ol...@illusionlabs.se ha 
scritto:
>
> Hi guys,
>
> Just wanted to let anyone know who (like me) is trying to get SGX working 
> on the BBB, and find this thread:
>
> SGX now works fine in console (no x support) if you use branch 
> "am33x-v3.12" from git://github.com/RobertCNelson/linux-dev.git (I just 
> build with default configuration)
>
> I've used it to sucessfully compile Graphics SDK 5_01_00_01 from: 
> http://downloads.ti.com/dsps/dsps_public_sw/gfxsdk/5_01_00_01/index_FDS.htmland
>  the demos run great!
>
> Installation & build instructions from here: 
> http://processors.wiki.ti.com/index.php/Graphics_SDK_Quick_installation_and_user_guide#Install_steps
>
> Had some issues with it not finding the size of the framebuffer at first, 
> but calling "fbset -xres 1280 -yres 720 -vxres 1280 -vyres 720" and 
> reloading the omaplfb kernel modules solved it.
>
>
> Cheers
> --Olof
>
> On Wednesday, October 30, 2013 7:00:38 PM UTC+1, John Syne wrote:
>>
>>
>>
>> From: 
>> Reply-To: 
>> Date: Wednesday, October 30, 2013 at 2:23 AM
>> To: 
>> Subject: Re: [beagleboard] SGX drivers on Kernel 3.8.13
>>
>> Hi
>>
>> Alexander uses 3.8.13 kernel sources as per 
>> 8715.debug.txtfile
>>  he attached in TI forum.
>>
>> Yeah, I've been monitoring his progress as well. He is still having 
>> issues, but it looks like he is getting closer to getting something 
>> working. This does look encouraging. 
>>
>> Regards,
>> John
>>
>>
>>
>> Linux arm 3.8.13xenomai-bone28 #3 SMP Tue Oct 29 15:00:54 CET 2013 
>> armv7l GNU/Linux
>>
>> He applied that patch manually, as he got some errors.
>>
>> среда, 30 октября 2013 г., 0:56:49 UTC+4 пользователь John Syne написал:
>>>
>>> From: Micka 
>>> Reply-To: 
>>> Date: Tuesday, October 29, 2013 at 12:58 PM
>>> To: 
>>> Subject: Re: [beagleboard] SGX drivers on Kernel 3.8.13
>>>
>>> Well, I'm not sure because Alexander said : "It would be great if you 
>>> could provide patches for the 3.8 kernel" and the TI guys replied with " 
>>> These 
>>> are to be applied againt kernel sources you are using" .
>>>
>>> Hi Micka,
>>>
>>> Try to apply patches to the 3.8 kernel and you will get errors. 
>>>
>>> Regards,
>>> John
>>>
>>>
>>>
>>> Micka,
>>>
>>>
>>> On Tue, Oct 29, 2013 at 8:46 PM, John Syne  wrote:
>>>


 From: Micka 
 Reply-To: 
 Date: Tuesday, October 29, 2013 at 5:33 AM
 To: 
 Cc: Robert Nelson , Gerald Coley <
 ger...@beagleboard.org>
 Subject: Re: [beagleboard] SGX drivers on Kernel 3.8.13

 I strongly think that it's for the 3.8 kernel, But I'm waiting your 
 confirmation :)

 Looks like this patch is for the 3.12 kernel.

 Regards,
 John



 On Tue, Oct 29, 2013 at 1:31 PM, Micka  wrote:

> Hi Robert & Gerald, 
>
> We have some news here : 
> http://e2e.ti.com/support/arm/sitara_arm/f/791/p/298596/1043947.aspx#1043947
>
> A new patch ? But my question, is it for the 3.2.x Kernel ? Or 3.8 ?
>
> micka,
>
>
> On Mon, Oct 28, 2013 at 8:54 PM, John Syne wrote:
>
>>
>> On 10/25/13, 11:44 AM, "Robert Nelson"  wrote:
>>
>> >On Fri, Oct 25, 2013 at 1:39 PM, Michael Mullin 
>> >wrote:
>> >> Is the 3.2 kernel SGX driver open source and simply too complex 
>> for the
>> >> voluntary community to port to 3.8+ in their spare time (In which 
>> case
>> >>we
>> >> could start a kickstarter or something to fund someone to work full
>> >>time on
>> >> this bug)?  Or is the driver proprietary, and the community is 
>> simply
>> >>at the
>> >> mercy of TI?
>> >
>> >Only the kernel "shim" is open source, well it also uses the 
>> in-kernel
>> >framebuffer driver to draw directly into..
>> >
>> >To give you an idea of what we are dealing with, take a look at this:
>> >https://github.com/RobertCNelson/ti-sdk-pvr
>> >
>> >I try to copy the gpl bits from every sdk release, that a bunch of us
>> >can more easily patch the bits to later kernel releases's.
>> >
>> >In the case of the bone..  The 3.2 bits use the old frame buffer
>> >driver, and with 3.8/3.12 we are using the brand new and shiny kms
>> >driver..
>> Hey Robert,
>>
>> Here is some interesting info given that [1] shows that SGX is working
>> over KMS on the OMAP5 and the GLSDK [2] used is based on Linux Kernel
>> v3.8.
>>
>> [1] 
>> http://tigraphics.blogspot.in/2013/08/qt5-with-kms-omap5-jacinto6.html
>> [2] 
>> http://processors.wiki.ti.com/index.php/OMAP5_G

[beagleboard] Re: PWM: changing Period of EHRPWM

[Giuseppe Iellamo]

Hi,

the problem is a bug in pwm_test so that once you enabled two channels of 
the same ehrpwm you cannot change the period.

Try look at

http://saadahmad.ca/using-pwm-on-the-beaglebone-black/

https://github.com/SaadAhmad/beaglebone-black-cpp-PWM

Il giorno lunedì 6 gennaio 2014 21:13:37 UTC+1, anto...@gmail.com ha 
scritto:
>
> Thanks,
>
> Tried your trick even replaced the new dtbo file but even after 
> that I am getting the default value for Period ( ie, 500) and duty (ie, 
> 0) ... Is there any step that you missed in between...??. Anyways thanks 
> for the tip..:)
>
> On Monday, 8 July 2013 08:44:54 UTC+5:30, tohr...@gmail.com wrote:
>>
>> Hello,
>>
>> you can change period by changing dtbo files.
>>
>> 1 Generate dts file from original dtbo file
>> dtc -I dtb -O dts -o /lib/firmware/bone_pwm_P8_13-00A0.dts /lib/firmware/
>> bone_pwm_P8_13-00A0.dtbo
>>
>> 2 Change period
>> open file "/lib/firmware/bone_pwm_P8_13-00A0.dts" with editor at 
>> lines around line 26:
>> pwm_test_P8_13 {
>> compatible = "pwm_test";
>> pwms = <0xdeadbeef 0x1 0x7a120 0x1>;
>>
>>  and change to following, for example change period to 10ns=0.1ms
>>
>> pwm_test_P8_13 {
>> compatible = "pwm_test";
>> pwms = <0xdeadbeef 0x1 10 0x1>;
>>   
>> where
>> -3rd parameter of line"pwms = ~" is period.
>> -period (and other parameters) can be written in either decimal or 
>> hexadecimal of 0xABC format.
>> -default period 0x7a120 is 500 in decimal.
>> -As you mentioned, Both A and B output for one eHRPWM must have same 
>> period setting.
>>  If not, the second device will fail to setup at "echo (device)> 
>> /sys/devices/bone_capemgr.*/slots" command.
>>
>> 3 Compile to new dtbo file
>> dtc -O dtb -o bone_pwm_P8_13-00A0.dtbo -b 0 -@ bone_pwm_P8_13-00A0.dts
>>
>>  You'd better back up original dtbo file before overwriting it.
>>
>> 4 Use new dtbo file. 
>> echo bone_pwm_P8_13 > /sys/devices/bone_capemgr.*/slots
>>
>>
>>
>> 2013年6月4日火曜日 16時33分00秒 UTC+9 sultanof.ilo...@gmail.com:
>>>
>>> Hey, 
>>> yes sure, duty must be (0 <= duty <= period). Otherwise you would try to 
>>> to set a pwm duty cycle of less than 0% or more than 100%. Returning an 
>>> error to the user is a proper way to handle this. 
>>>
>>> As mentioned above EHRPWM1 and EHRPWM2 share the same base period (or 
>>> respectively the base frequency). If I enable both PWM ouputs, writing to 
>>> the period files always results in an error. Enabeling only one of the two 
>>> outputs lets me change the periods.
>>> This does make sense after all. I assume the necessary crosschecking of 
>>> the conditions (0 <= duty <= period) for related PWM outputs is simply not 
>>> implemented yet or mayby just faulty. 
>>>
>>> Am Montag, 3. Juni 2013 12:25:15 UTC+2 schrieb lawe...@gmail.com:

 Hi

 I'm just starting out, but here is what I found. Hopefully it can help 
 you.
 The period must be greater than duty.
 This worked fine for me:
 echo 10 > /sys/devices/ocp.2/pwm_test_P9_14.12/period
 Period is given in ns. Duty is given in ns on/off depending on polarity.

>>>
>>

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[beagleboard] Re: newbie: Trying to get PWM to work to move a servo - not working

[Giuseppe Iellamo]

Just to tell you.

I use PWM on BBB and encoders and they are working quite well.

You have to use kernel 3.8.13
You have to patch pwm test using
https://github.com/SaadAhmad/beaglebone-black-cpp-PWM

and if you have encoders try 
https://github.com/Teknoman117/beaglebot

all that you need is:
http://www.phys-x.org/rbots/index.php?option=com_content&view=article&id=106:lesson-3-beaglebone-black-pwm&catid=46:beaglebone-black&Itemid=81




Il giorno mercoledì 11 dicembre 2013 14:18:10 UTC+1, Sika ha scritto:
>
> HI Ian, 
>
> Sorry to say it did not work for me either. I think Adafruit are aware of 
> it -- I posted a bug notice  a couple of weeks ago and they deleted it 
> because there was one already.
> PWM on the BBB does not seem to be working real well at the moment. I got 
> it to work fine on the RPI with the equivalent library.
> It was OK for me in the end --Im using a stepper, and I've just been 
> switching the GPIO on and off in python -- which seems as fast as I need.
>
> Better than trying to use PWM in my case, anyway.
>
> Kind regards
>
> Matt
>
> On Wednesday, December 11, 2013 3:46:47 PM UTC+10, chris.l...@gmail.comwrote:
>>
>> Hi,
>> I'm a newbie to the Beaglebone Black. I'm trying to get a servo moving 
>> with the BBB. I have a separate 5V power supply going to my servo and the 
>> signal wire (orange) going to P8_13 on my BBB and going to the servo orange 
>> wire (signal).
>> I have confirmed that my wiring is definitely correct.
>> How can I go about getting PWM to function? or even test to see if it's 
>> working? I have tried the Adafruit_BBIO library which is supposed to work - 
>> but it's not working.
>> I have also tried to use GPIO to display a message within my SSH window 
>> when a push button switch is pressed - nothing there either. It seems none 
>> of the IO ports on the BBB are working. I have actually purchased another 
>> BBB thinking that my first one was broken. I have the same result on both 
>> of my BBBs.
>>
>> Does anyone have any step by step directions that can help me? I really 
>> want to start creating things and playing but nothings working... :(
>> I've searched google endlessly and have gone to basically every article 
>> to try and get more information but still at a loss. Any help would be 
>> appreciated.
>>
>>

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[beagleboard] Re: newbie: Trying to get PWM to work to move a servo - not working

[Giuseppe Iellamo]

Just to tell you.

I use PWM on BBB and encoders and they are working quite well.

You have to use kernel 3.8.13
You have to patch pwm test using
https://github.com/Teknoman117/beaglebot

and if you have encoders try 
https://github.com/Teknoman117/beaglebot

all that you need is:
http://www.phys-x.org/rbots/index.php?option=com_content&view=article&id=106:lesson-3-beaglebone-black-pwm&catid=46:beaglebone-black&Itemid=81



Il giorno mercoledì 11 dicembre 2013 14:18:10 UTC+1, Sika ha scritto:
>
> HI Ian, 
>
> Sorry to say it did not work for me either. I think Adafruit are aware of 
> it -- I posted a bug notice  a couple of weeks ago and they deleted it 
> because there was one already.
> PWM on the BBB does not seem to be working real well at the moment. I got 
> it to work fine on the RPI with the equivalent library.
> It was OK for me in the end --Im using a stepper, and I've just been 
> switching the GPIO on and off in python -- which seems as fast as I need.
>
> Better than trying to use PWM in my case, anyway.
>
> Kind regards
>
> Matt
>
> On Wednesday, December 11, 2013 3:46:47 PM UTC+10, chris.l...@gmail.comwrote:
>>
>> Hi,
>> I'm a newbie to the Beaglebone Black. I'm trying to get a servo moving 
>> with the BBB. I have a separate 5V power supply going to my servo and the 
>> signal wire (orange) going to P8_13 on my BBB and going to the servo orange 
>> wire (signal).
>> I have confirmed that my wiring is definitely correct.
>> How can I go about getting PWM to function? or even test to see if it's 
>> working? I have tried the Adafruit_BBIO library which is supposed to work - 
>> but it's not working.
>> I have also tried to use GPIO to display a message within my SSH window 
>> when a push button switch is pressed - nothing there either. It seems none 
>> of the IO ports on the BBB are working. I have actually purchased another 
>> BBB thinking that my first one was broken. I have the same result on both 
>> of my BBBs.
>>
>> Does anyone have any step by step directions that can help me? I really 
>> want to start creating things and playing but nothings working... :(
>> I've searched google endlessly and have gone to basically every article 
>> to try and get more information but still at a loss. Any help would be 
>> appreciated.
>>
>>

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[beagleboard] Re: Has anybody tested the new Graphics SDK which should enable SGX on kernel 3.12?

[Giuseppe Iellamo]

Thank you this is a very good news for me!

When I'll finish with RT part I'll try QT5 on BBB...

Giuseppe

Il giorno mercoledì 11 dicembre 2013 00:05:04 UTC+1, Daniel Nilsson ha 
scritto:
>
> Hi,
>
> I haven't tried the links you posted below, but I played around tonight 
> with the latest bits in the arago project and now I have accelerated 3D 
> graphics support on a beaglebone black. Using the beaglebone black BSP 
> support in meta-ti, I get a 3.12.4 Linux kernel and then I built 
> the arago-base-tisdk-image as root filesystem. Result is a beaglebone black 
> which displays accelerated 3D graphics on the display connected over HDMI, 
> so the SGX drivers are now available för the 3.12 kernel (in arago) but 
> still not packaged nicely for the BBB I guess.
>
> Regards
> Daniel
>
>
> On Monday, December 9, 2013 10:38:10 AM UTC+1, Giuseppe Iellamo wrote:
>>
>> As the title states... has anybody tried? 
>>
>>
>> http://processors.wiki.ti.com/index.php/RN_5_00_00_01_alpha
>>
>>
>> http://e2e.ti.com/support/arm/sitara_arm/f/791/p/298596/1072533.aspx#1072533
>>
>

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[beagleboard] Has anybody tested the new Graphics SDK which should enable SGX on kernel 3.12?

[Giuseppe Iellamo]

As the title states... has anybody tried? 


http://processors.wiki.ti.com/index.php/RN_5_00_00_01_alpha

http://e2e.ti.com/support/arm/sitara_arm/f/791/p/298596/1072533.aspx#1072533

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[beagleboard] Re: Cape IIO Kernel NULL Pointer derefence

[Giuseppe Iellamo]

As others have noted here 

https://groups.google.com/forum/#!category-topic/beagleboard/beaglebone-black/ZLSuKKM9Im4

Unloading cape is a bit problematic... shortly don't expect it to work 
reliably

Il giorno mercoledì 4 dicembre 2013 01:41:47 UTC+1, Doug Edey ha scritto:
>
> Using Ubuntu 13.04 3.8.13-bone31
>
> After approximately five minutes AIN* values go to "Resource Temporarily 
> Unavailable"
>
> elsinore@brewery:~$ cat /sys/devices/ocp.2/helper.13/AIN*
> cat: /sys/devices/ocp.2/helper.13/AIN0: Resource temporarily unavailable
> cat: /sys/devices/ocp.2/helper.13/AIN1: Resource temporarily unavailable
> cat: /sys/devices/ocp.2/helper.13/AIN2: Resource temporarily unavailable
> cat: /sys/devices/ocp.2/helper.13/AIN3: Resource temporarily unavailable
> cat: /sys/devices/ocp.2/helper.13/AIN4: Resource temporarily unavailable
> cat: /sys/devices/ocp.2/helper.13/AIN5: Resource temporarily unavailable
> cat: /sys/devices/ocp.2/helper.13/AIN6: Resource temporarily unavailable
> cat: /sys/devices/ocp.2/helper.13/AIN7: Resource temporarily unavailable
>
> When I unload the cape:
>
> Dec  3 19:38:04 brewery kernel: [  873.063510] Unable to handle kernel 
> NULL pointer dereference at virtual address 001b
> Dec  3 19:38:04 brewery kernel: [  873.072312] pgd = df308000
> Dec  3 19:38:04 brewery kernel: [  873.075179] [001b] *pgd=9f475831, 
> *pte=, *ppte=
> Dec  3 19:38:04 brewery kernel: [  873.081805] Internal error: Oops: 17 
> [#1] SMP ARM
> Dec  3 19:38:04 brewery kernel: [  873.086721] Modules linked in: g_multi 
> libcomposite r8712u(C) hid_ntrig
> Dec  3 19:38:04 brewery kernel: [  873.093665] CPU: 0Tainted: G   
>   C(3.8.13-bone31 #1)
> Dec  3 19:38:04 brewery kernel: [  873.099955] PC is at 
> omap_device_idle+0x10/0x54
> Dec  3 19:38:04 brewery kernel: [  873.104689] LR is at 
> _od_runtime_suspend+0x1c/0x24
> Dec  3 19:38:04 brewery kernel: [  873.109697] pc : []lr : 
> []psr: a013
> Dec  3 19:38:04 brewery kernel: [  873.109697] sp : de5bbd68  ip : 
> df0484cc  fp : de155c18
> Dec  3 19:38:04 brewery kernel: [  873.121695] r10: de5bbda0  r9 : 
> c0059db0  r8 : 
> Dec  3 19:38:04 brewery kernel: [  873.127155] r7 : 6013  r6 : 
>   r5 : df28f410  r4 : 
> Dec  3 19:38:04 brewery kernel: [  873.133976] r3 :   r2 : 
> 000c000b  r1 : df28f480  r0 : df28f400
> Dec  3 19:38:04 brewery kernel: [  873.140800] Flags: NzCv  IRQs on  FIQs 
> on  Mode SVC_32  ISA ARM  Segment user
> Dec  3 19:38:04 brewery kernel: [  873.148256] Control: 10c5387d  Table: 
> 9f308019  DAC: 0015
> Dec  3 19:38:04 brewery kernel: [  873.154260] Process bash (pid: 1491, 
> stack limit = 0xde5ba240)
> Dec  3 19:38:04 brewery kernel: [  873.160356] Stack: (0xde5bbd68 to 
> 0xde5bc000)
> Dec  3 19:38:04 brewery kernel: [  873.182260] bd60:   
>  c0028540  df28f410 c0028524 c038e278
> Dec  3 19:38:04 brewery kernel: [  873.199820] bd80: c094f4d8 df28f410 
>  c038e7d8 6013 0001 0003 
> Dec  3 19:38:04 brewery kernel: [  873.215648] bda0: de664e00 fdf4 
> de5ba000 df28f410  df28f480 6013 00200200
> Dec  3 19:38:04 brewery kernel: [  873.227851] bdc0: c066a264 de623df8 
> de155c18 c038f684  df28f410 c0027984 0004
> Dec  3 19:38:04 brewery kernel: [  873.236519] bde0: 6013 c038ae38 
> df28f410 c038e278 c094f4d8 df28f410  c038ebb8
> Dec  3 19:38:04 brewery kernel: [  873.252565] be00: df28f51c df28f410 
> 0004 df28f480 6013 c038ed10 c03943f4 df28f410
> Dec  3 19:38:04 brewery kernel: [  873.272087] be20: df7f9b10 c099be08 
>  c039fbe8 c039fbbc df28f410 c099d194 c03878e0
> Dec  3 19:38:04 brewery kernel: [  873.287712] be40: c03878cc c03862d8 
> df578580 df28f444 df28f410 c038633c  df28f410
> Dec  3 19:38:04 brewery kernel: [  873.304292] be60: df04843c c0385e70 
> df28f410 df0b7200 df0b7210 c03840e8 df28f400 df0b7200
> Dec  3 19:38:04 brewery kernel: [  873.312980] be80:  c0387c58 
> df28f400 c0387e74 df47d680 c04d1bf8 002b df47d680
> Dec  3 19:38:04 brewery kernel: [  873.338590] bea0: de623dc0 de623df8 
> 00100100 c04d1cc4 df578580  ffb0 de623dc8
> Dec  3 19:38:04 brewery kernel: [  873.361964] bec0: de623dc0 de623e10 
> db25f000 c04d2498 de39e410  df0d7c10 de00da58
> Dec  3 19:38:04 brewery kernel: [  873.381545] bee0: df0d7c10 c039c69c 
> 0007 de155c20 0003 c039dca8  de00da58
> Dec  3 19:38:04 brewery kernel: [  873.394988] bf00: c09c05c0 c061992c 
>    de157f48 de00da40 0003
> Dec  3 19:38:04 brewery kernel: [  873.404766] bf20: de00da58 de5bbf80 
> c066a264 df0d7c18  c0382ed0 0003 c014e684
> Dec  3 19:38:04 brewery kernel: [  873.424443] bf40: de333bc0 000ac408 
> 0003 de5bbf80 000ac408 de5ba000 0003 c00f5474
> Dec  3 19:38:04 brewery kernel: [  873.440066] bf60: de333bc0 000ac408 
>   de333bc0  000ac408 c00

[beagleboard] Re: Beagleboard black for the dumb evil genius?

[Giuseppe Iellamo]

Well it can certainly used 
(see http://www.linuxcnc.org/ )

but if you fall into coma when someone starts talking about programming... 
maybe you've to hire someone

Il giorno mercoledì 27 novembre 2013 08:51:37 UTC+1, Maximus ha scritto:
>
> Hi all, 
>
> OK so I am one of those guys who likes to cut and copy code from sources 
> to get my arduino projects to work, the moment you start talking to me 
> about learning programming and editing firmware, etc I fall into a coma. I 
> have just heard about beaglebone black (yes I live under a rock) it sounds 
> really interesting and I am thinking that it could be used to improve my 
> desktop CNC (currently being driven by grblshield and arduino). Is this 
> possible, I am starting to look into projects but would like to hear what 
> the forum guys think, is beaglebone black another rasb Pi? Or can it really 
> be used for CNC/robotics/etc?
>
> thanks in advance
>

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Re: [beagleboard] Can anyone tell me about PWM in Linux 3.12+ Please?

[Giuseppe Iellamo]

Hi,

I've tried to build pwm_test under 3.12 and it works seamless BUT the 
dts_common file is hesvy changed so I didn't figure how to match the old 
overlay with the new kernel... after that I gave up and went back to 3.8.13.

I'm also interested in other experience

Il giorno martedì 19 novembre 2013 17:52:32 UTC+1, marcus silva ha scritto:
>
> This is a very, very nice question.
> I try to see the answer too.
>
>
> 2013/11/18 Jacob Ole Juul Kolding >
>
>> I got PWM working in Ubuntu 13.10 Linux 3.8, but the same API (pwm_test) 
>> is missing in Linux 3.12+
>> And I can't seem to find anything with google.
>>
>> Can anyone tell me how its supposed to work in Linux 3.12+
>>
>> Please help!
>>
>> /Jacob
>>  
>> -- 
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>>
>
>
>
> -- 
> Marcus de Vasconcelos Diogo da Silva
>
> "Uma montanha até um cego consegue desviar,mas é nas pedras menores que 
> nós muitas vezes tropeçamos e caimos!" 
>

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Re: [beagleboard] Help: "Fast" ADC sampling on the beagleboneblack

[Giuseppe Iellamo]

@Fe wi

John is totally right, I'd like to add that you don't have to mmap linux 
devices like those in /dev or via /sys but you have to map directly 
register, 

e.g. in my case (the eqep)


...
constexpr uint32_t eQEP1phAdd=0x48302180; // if you look at am335x TRM this 
is the base address of the eqep
map_base = mmap(0, MAP_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, (
eQEP1phAdd) & ~MAP_MASK );
...
Please note that I'm continuing to use the linux drivber to the initial 
configuration of the device...

Il giorno giovedì 28 novembre 2013 05:10:31 UTC+1, John Syne ha scritto:
>
>
>
> From: >
> Reply-To: >
> Date: Monday, November 25, 2013 at 3:19 AM
> To: >
> Subject: [beagleboard] Help: "Fast" ADC sampling on the beagleboneblack
>
> Hi!
>
> I am currently using my Beaglebone Black with the following KERNEL: 
> 3.8.13xenomai-bone28.1 (including the ti_am335_adc driver).
>
> Part of my Project is reading signals from an ADC and then processing 
> them. I would love to use the onboard ADC for that, but I require to sample 
> 5 channels @ 2 kHz each. (I have installed the Xenomai Kernel mainly for 
> processing purposes but it might be useful for sampling as well ;) )
>
> My first simplistic try was to just read the voltage values from the files 
> provided in "/sys/bus/iio/devices/iio:device0/in_voltage0_raw" . 
> This works fine so far, but is just not fast enough. ( I get about 500 sps 
> on ONE channel)
>
> Here is that part of my CODE: 
> for(;;) {
>
> rt_task_wait_period(NULL); // Xenomai
>
> now=rt_timer_read(); // Xenomai 
>
> // Work for the current period //
>
>FILE *read = fopen ( 
> "/sys/bus/iio/devices/iio:device0/in_voltage0_raw", "r");
>  
>
> fscanf (read, "%f", &value);
> float voltage = value * (1800.0/4095.0);   
> fprintf (write, "Value: %fVoltage: %f\n", value, voltage);
>
>  printf("Time since last turn: %ld,%06ld msValue:%f   
> Voltage: 
> %f\n",
>(long)(now - previous) / 100,
>(long)(now - previous) % 100, value, voltage);
>previous = now;
>
> fclose ( read );
> fclose ( write );
>
>   }  
> (I know that leaving out the printf part and the voltage calculation 
> increases performance, but still not enough)
>
> Is there any other way reading the values, directly from the memory 
> location or a register? Perhaps using mmap? 
> Or is there a Xenomai function for reading from an iio device? (I couldn't 
> find any...)
>
> I have seen two interesting links about continuous sampling:
> - 
> http://beagleboard-gsoc13.blogspot.de/2013/07/sampling-analogue-signals-using-adc-on.html
> - http://processors.wiki.ti.com/index.php/AM335x_ADC_Driver%27s_Guide
>
> But i can't get the generic_buffer.c from those sites to work correctly 
> (as the trigger handling seems to be outdated), plus i might need to know a 
> kind of "oneshot" read function anyway to mux the 5 channels i want to 
> sample. Or is it possible to continuous sample multiple channels? The 
> Driver guide says 'no', but the Author from the other link seems to have 
> worked a lot on the adc Driver since.
>
> I am currently trying to figure out the code in generic_buffer.c and the 
> used iio_utils.h and the adc driver, but it is a lot of code and drivers 
> are not my strong suit.
> So far I think I need to setup the ADC to my needs (somewhat similar to 
> generic_buffer.c) and then read from it somehow, but I am really struggling 
> with that!
>
>
> So now you know the state of my project :) but to *sum it up*:
>
> Are my demands (5 channels @ 2 kHz) even possible using only the on-board 
> ADC?
> And if yes how do i read the values fast enough? Any tips?
>
> Reading the ADC values via sysfs isn’t going to be fast. Also, it doesn’t 
> help to have a Xenomai kernel if you don’t use it. You have to write a 
> Xenomai kernel driver and then create a user space app that uses the 
> Xenomai API to communicate with the Xenomai kernel driver.  Xenomai comes 
> with several examples to help you get started. You could also look at 
> Charles Steinkuehler’s LinuxCNC work where he uses nmap to control GPIO 
> with the Xenomai kernel. 
>  
> Regards,
> John
>
>
> Thank you in advance!!
>
>
> -- 
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>
>

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Re: [beagleboard] Re: Help: "Fast" ADC sampling on the beagleboneblack

[Giuseppe Iellamo]

I suggest all  to subscribe to xenomai mailing list as this issue is more 
xenomai related than beagle... 

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[beagleboard] Re: Help: "Fast" ADC sampling on the beagleboneblack

[Giuseppe Iellamo]

Hi,

I'm using the same kernel (with xenomai) as you, and I'm facing a similar 
issue with the encoder interface

If you use xenomai and then access via sysfs to the driver you0re causing a 
domain switch to linux OS over xenomai. 
Moreover this way in any cycle you're issuing to many syscalls to reach 
high frequencies.

Just this morning I've tried to sample the encoder not using the sysfs 
interface but mmaping the device counter to the xenomai task and i 
experienced a big performance bump.


BR
Giuseppe

Il giorno lunedì 25 novembre 2013 12:19:19 UTC+1, fe wi ha scritto:
>
> Hi!
>
> I am currently using my Beaglebone Black with the following KERNEL: 
> 3.8.13xenomai-bone28.1 (including the ti_am335_adc driver).
>
> Part of my Project is reading signals from an ADC and then processing 
> them. I would love to use the onboard ADC for that, but I require to sample 
> 5 channels @ 2 kHz each. (I have installed the Xenomai Kernel mainly for 
> processing purposes but it might be useful for sampling as well ;) )
>
> My first simplistic try was to just read the voltage values from the files 
> provided in "/sys/bus/iio/devices/iio:device0/in_voltage0_raw" . 
> This works fine so far, but is just not fast enough. ( I get about 500 sps 
> on ONE channel)
>
> Here is that part of my CODE: 
> for(;;) {
>
> rt_task_wait_period(NULL); // Xenomai
>
> now=rt_timer_read(); // Xenomai 
>
> // Work for the current period //
>
>FILE *read = fopen ( 
> "/sys/bus/iio/devices/iio:device0/in_voltage0_raw", "r");
>  
>
> fscanf (read, "%f", &value);
> float voltage = value * (1800.0/4095.0);   
> fprintf (write, "Value: %fVoltage: %f\n", value, voltage);
>
>  printf("Time since last turn: %ld,%06ld msValue:%f   
> Voltage: 
> %f\n",
>(long)(now - previous) / 100,
>(long)(now - previous) % 100, value, voltage);
>previous = now;
>
> fclose ( read );
> fclose ( write );
>
>   }  
> (I know that leaving out the printf part and the voltage calculation 
> increases performance, but still not enough)
>
> Is there any other way reading the values, directly from the memory 
> location or a register? Perhaps using mmap? 
> Or is there a Xenomai function for reading from an iio device? (I couldn't 
> find any...)
>
> I have seen two interesting links about continuous sampling:
> - 
> http://beagleboard-gsoc13.blogspot.de/2013/07/sampling-analogue-signals-using-adc-on.html
> - 
> http://processors.wiki.ti.com/index.php/AM335x_ADC_Driver%27s_Guide
>
> But i can't get the generic_buffer.c from those sites to work correctly 
> (as the trigger handling seems to be outdated), plus i might need to know a 
> kind of "oneshot" read function anyway to mux the 5 channels i want to 
> sample. Or is it possible to continuous sample multiple channels? The 
> Driver guide says 'no', but the Author from the other link seems to have 
> worked a lot on the adc Driver since.
>
> I am currently trying to figure out the code in generic_buffer.c and the 
> used iio_utils.h and the adc driver, but it is a lot of code and drivers 
> are not my strong suit.
> So far I think I need to setup the ADC to my needs (somewhat similar to 
> generic_buffer.c) and then read from it somehow, but I am really struggling 
> with that!
>
>
> So now you know the state of my project :) but to *sum it up*:
>
> Are my demands (5 channels @ 2 kHz) even possible using only the on-board 
> ADC?
> And if yes how do i read the values fast enough? Any tips?
>
> Thank you in advance!!
>
>
>

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[beagleboard] Re: Flashing Ubuntu 12.04 To eMMC

[Giuseppe Iellamo]

Try 
"sudo su"
and then issue the commands...

Il giorno lunedì 25 novembre 2013 05:37:58 UTC+1, napp...@gmail.com ha 
scritto:
>
> Been trying to flash the Ubuntu 12.04 image from the uSD card to the eMMC 
> on the BBB. Everytime I try to do this a permission denied error appears 
> when when prepending sudo to the command. Tried to flash the eMMC using the 
> following commands:
>
>   *xzcat ubuntu-precise-12.04.3-armhf-3.8.13-bone30.img.xz | dd 
> of=/dev/mmcblk1 bs=1M*
>
>   *xz -cd ubuntu-precise-12.04.3-armhf-3.8.13-bone30.img.xz > 
> /dev/mmcblk1*
>
>
> Would be much easier if there was a eMMC flash image for Ubuntu 12.04 like 
> there is for 13.04. Why does Ubuntu 12.04 not have a eMMC flash image? The 
> version of Ubuntu being flashed to the eMMC *must* be 12.04 for stability 
> reasons.
>

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[beagleboard] kernel 3.12 and SGX: something is moving

[Giuseppe Iellamo]

It seems that something is moving, even if this is not a BBB specific 
release at the moment ! Now I'm working on the lower half of the project 
(No GUI at all BBB) so I cannot try it... Just to let you know.

http://tigraphics.blogspot.in/2013/11/4q-2013-linux-graphics-sdk-release.html

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[beagleboard] Re: Kernel 3.12 and PWM_TEST

[Giuseppe Iellamo]

I've not recorded it but I followed the instruction from

http://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-SerialLogin

then I downloaded and applied the patch from

https://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO

It seems to apply surprisingly clean even if this was not a vanilla kernel.

After that i've built pwm_test as a module out of tree.

(as a side note, I've reverted to the 3.8.13+xenomai and it seems to suit 
my needs...)



Il giorno martedì 19 novembre 2013 18:47:35 UTC+1, Stephen Agate ha scritto:
>
> Any chance of you posting your build procedure? I'd like to try the build 
> out.
>

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[beagleboard] Kernel 3.12 and PWM_TEST

[Giuseppe Iellamo]

Hi all,

Yesterday I've compiled a 3.12 kernel and applied tha PREEMPT_RT patch on 
it. It seems to be working, but I've noted that pwm_test.c module was not 
included, so I've built it and loaded and everything seems to work, except 
that the overlay aren't working now, because the common DTS file has seen 
the deletion of the "ocp", I'm not a device tree superexpert, any advice on 
how to overcome this issue?

Should I merge back the old dts ocp {} or change the target = <&ocp>; from 
the bone_pwm*** files?





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[beagleboard] Qnx neurino on BBB

[Giuseppe Iellamo]

Hi all,

I've seen that there exists a BSP for using QNX neutrino on BBB... 
(http://community.qnx.com/sf/wiki/do/viewPage/projects.bsp/wiki/TiAm335Beaglebone)

Has anyone tried it??

Giuseppe

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Re: [beagleboard] Re: linux 3.8 PWM guide?

[Giuseppe Iellamo]

Yes I'm using Ubuntu 13.04 as my userland.

It is working faily well but sometimes (once in a second) I have latancies 
that approaces 1 ms... I'm reasoning about writing a xenomai kernel space 
driver for PWM/eqep

Il giorno giovedì 14 novembre 2013 20:15:39 UTC+1, lmm...@gmail.com ha 
scritto:
>
> Was this using Ubuntu?
>
> On Thursday, October 31, 2013 3:28:55 AM UTC-7, Giuseppe Iellamo wrote:
>>
>> Just my two cent,
>>
>> after some struggling with the eQep support
>>
>> I'm currently using BBB with 3.8.13-bone28 xenomai patched and both of 
>> PWM and encoder reading are working well.
>>
>>
>>
>> Il giorno giovedì 31 ottobre 2013 01:44:33 UTC+1, RobertCNelson ha 
>> scritto:
>>>
>>> On Wed, Oct 30, 2013 at 7:39 PM,   wrote: 
>>> > Just a short comment: 
>>> > 
>>> > Using Beagleboard bone, and ubuntu 3.8 with kernel: 
>>> > -  Linux ubuntu-armhf 3.8.13-bone28: pwm IS working 
>>> > -  Linux ubuntu-armhf 3.8.13-bone20: pwm is NOT working 
>>>
>>> and for some reason, users seem to not want to upgrade from bone20 to 
>>> bone28... Not sure why. ;) 
>>>
>>> Regards, 
>>>
>>> -- 
>>> Robert Nelson 
>>> http://www.rcn-ee.com/ 
>>>
>>

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[beagleboard] Re: Patching the kernel to read encoders

[Giuseppe Iellamo]

Hi,

I just did it and I followed the instruction on

http://eewiki.net/display/linuxonarm/BeagleBone+Black

and then you can patch the whole with 

https://github.com/SaadAhmad/beaglebone-black-cpp-PWM

and

https://github.com/Teknoman117/beaglebot/tree/master/encoders/patches

It should be straightforward BUT please note that you should read the Soc 
Manual because the default settings Teknoman choose for the eQep not 
necessarly will match what you will need (for example when do you want your 
counts conter to reset?)

Il giorno mercoledì 6 novembre 2013 10:14:59 UTC+1, danji...@gmail.com ha 
scritto:
>
> Hello!, I just got my beaglebone black last week and already got the GPIO 
> and PWM libraries working nicely, 
> However for my project, I need to read 2 quadrature encoders to measure 
> the speed of 2 different and I found
> this library that seems like the perfect solution for me, since it has a 
> python API, however I really have no 
> idea how to patch the beaglebone kernel to get it to work, and the guide 
> is a little bit "over my head", since 
> it's my first time working with linux, so I never had to deal with the 
> kernel very much.
> https://github.com/Teknoman117/beaglebot/tree/master/encoders/patches
>
> I was wondering if someone has a simpler guide on how to patch and install 
> the kernel on the Beaglebone Black,
> I don't understand if I have to build the kernel in another system and 
> then get it on the BBB or just build it
> directly on the BBB, and when I build it and patch it, how do I get it to 
> work...
>
> Thanks in advance for any help
>

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Re: [beagleboard] Re: linux 3.8 PWM guide?

[Giuseppe Iellamo]

Just my two cent,

after some struggling with the eQep support

I'm currently using BBB with 3.8.13-bone28 xenomai patched and both of PWM 
and encoder reading are working well.



Il giorno giovedì 31 ottobre 2013 01:44:33 UTC+1, RobertCNelson ha scritto:
>
> On Wed, Oct 30, 2013 at 7:39 PM,  > 
> wrote: 
> > Just a short comment: 
> > 
> > Using Beagleboard bone, and ubuntu 3.8 with kernel: 
> > -  Linux ubuntu-armhf 3.8.13-bone28: pwm IS working 
> > -  Linux ubuntu-armhf 3.8.13-bone20: pwm is NOT working 
>
> and for some reason, users seem to not want to upgrade from bone20 to 
> bone28... Not sure why. ;) 
>
> Regards, 
>
> -- 
> Robert Nelson 
> http://www.rcn-ee.com/ 
>

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Re: [beagleboard] SGX drivers on Kernel 3.8.13

[Giuseppe Iellamo]

>
> We are all "users" contact TI directly. ;) 
>
> Regards, 
>

Did it.

I'm sorry but from time to time is it difficult to track all the news... 
thank you very much for the support to everyone. 


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Re: [beagleboard] SGX drivers on Kernel 3.8.13

[Giuseppe Iellamo]

I'm Just realizing that maybe I misunderstood. Is IT unlikely that a sgx driver 
will be release for 3.8.x kernel OR for any other subsequent release? 

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Re: [beagleboard] SGX drivers on Kernel 3.8.13

[Giuseppe Iellamo]

Gerald I didn't want to upset you. Your support is certainly first class.

But this is the way linux works and works good. Things keep changing, 
I think that one couldn't blame linux folks for their work... and really it 
seems a little strange to me that for a company so big like TI is difficult 
to implement the needed update...

Il giorno venerdì 25 ottobre 2013 14:44:20 UTC+2, Gerald ha scritto:
>
> Life is not always fair, especially when SW is involved. The new DRM 
> architecture introduced by the Linux folks in the 3.8 Kernel broke it. I 
> agree, that is not fair.
>
>
> Gerald
>
>
> On Fri, Oct 25, 2013 at 1:52 AM, Giuseppe Iellamo 
> 
> > wrote:
>
>> It seems to me not very fair to say we have a board with a 3d 
>> accelerator, we sell it and we won't give you the driver nor the specs to 
>> use it...
>>
>> To my understanding with 3.2 kernel it was working. Any advice on how to 
>> resume a working 3.2 distribution I may use?
>>
>> Il giorno giovedì 24 ottobre 2013 22:21:12 UTC+2, Gerald ha scritto:
>>>
>>> As I understand it, the DRM driver is not compatible with the old SGX 
>>> frame buffer architecture. TI tells us they are not rewriting the code for 
>>> 3.8. Not sure about future kernel releases. Best bet would be to ask TI on 
>>> this one.
>>>
>>> Gerald
>>>
>>>
>>>
>>> On Thu, Oct 24, 2013 at 1:39 PM,  wrote:
>>>
>>>> Hi,
>>>>
>>>> What exactly is missing? I have read something about that the clock for 
>>>> GPU is not enabled. Can't we fix this or can't we get TI to fix this?
>>>>
>>>> Regards
>>>> Alexander
>>>>
>>>> Am Donnerstag, 24. Oktober 2013 15:07:11 UTC+2 schrieb RobertCNelson:
>>>>
>>>>> On Thu, Oct 24, 2013 at 3:10 AM,   wrote: 
>>>>> > Hello, 
>>>>> > 
>>>>> > I am currently trying to get OpenGL ES running on the Bone, but I 
>>>>> get some 
>>>>> > problems with the kernel modules. I already posted on the TI formus. 
>>>>> Maybe 
>>>>> > someone can help: 
>>>>> > http://e2e.ti.com/support/arm/sitara_arm/f/791/t/298596.aspx<http://e2e.ti.com/support/arm/sitara_arm/f/791/t/298596.aspx>
>>>>> >  
>>>>>
>>>>> See a few of the other threads in this forum for the full details on 
>>>>> this.. Essentially we do not have the needed bits from TI at this 
>>>>> time.. 
>>>>>
>>>>> Regards, 
>>>>>
>>>>> -- 
>>>>> Robert Nelson 
>>>>> http://www.rcn-ee.com/ 
>>>>>
>>>>  -- 
>>>> For more options, visit http://beagleboard.org/discuss
>>>> --- 
>>>> You received this message because you are subscribed to the Google 
>>>> Groups "BeagleBoard" group.
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>>>> an email to beagleboard...@**googlegroups.com.
>>>>
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>>>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out>
>>>> .
>>>>
>>>
>>>  -- 
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Re: [beagleboard] SGX drivers on Kernel 3.8.13

[Giuseppe Iellamo]

It seems that such a kernel doesn't exist and reading last Gerald post (as 
always thank you for the support) it could never exist again...

In my project I'll use two beagle : one for embedded layer (in which I'm 
using 3.8.13 - xenomai patched) one for the gui, in which I don't need more 
than HDMI e OpenGl support...

Il giorno venerdì 25 ottobre 2013 09:34:40 UTC+2, Mickae1 ha scritto:
>
> You don't have a most recent Kernel that is working correctly with the SGX 
> drivers ?
>
> 3.2 it's very old 
>
>
> On Fri, Oct 25, 2013 at 8:52 AM, Giuseppe Iellamo 
> 
> > wrote:
>
>> It seems to me not very fair to say we have a board with a 3d 
>> accelerator, we sell it and we won't give you the driver nor the specs to 
>> use it...
>>
>> To my understanding with 3.2 kernel it was working. Any advice on how to 
>> resume a working 3.2 distribution I may use?
>>
>> Il giorno giovedì 24 ottobre 2013 22:21:12 UTC+2, Gerald ha scritto:
>>>
>>> As I understand it, the DRM driver is not compatible with the old SGX 
>>> frame buffer architecture. TI tells us they are not rewriting the code for 
>>> 3.8. Not sure about future kernel releases. Best bet would be to ask TI on 
>>> this one.
>>>
>>> Gerald
>>>
>>>
>>>
>>> On Thu, Oct 24, 2013 at 1:39 PM,  wrote:
>>>
>>>> Hi,
>>>>
>>>> What exactly is missing? I have read something about that the clock for 
>>>> GPU is not enabled. Can't we fix this or can't we get TI to fix this?
>>>>
>>>> Regards
>>>> Alexander
>>>>
>>>> Am Donnerstag, 24. Oktober 2013 15:07:11 UTC+2 schrieb RobertCNelson:
>>>>
>>>>> On Thu, Oct 24, 2013 at 3:10 AM,   wrote: 
>>>>> > Hello, 
>>>>> > 
>>>>> > I am currently trying to get OpenGL ES running on the Bone, but I 
>>>>> get some 
>>>>> > problems with the kernel modules. I already posted on the TI formus. 
>>>>> Maybe 
>>>>> > someone can help: 
>>>>> > http://e2e.ti.com/support/arm/sitara_arm/f/791/t/298596.aspx<http://e2e.ti.com/support/arm/sitara_arm/f/791/t/298596.aspx>
>>>>> >  
>>>>>
>>>>> See a few of the other threads in this forum for the full details on 
>>>>> this.. Essentially we do not have the needed bits from TI at this 
>>>>> time.. 
>>>>>
>>>>> Regards, 
>>>>>
>>>>> -- 
>>>>> Robert Nelson 
>>>>> http://www.rcn-ee.com/ 
>>>>>
>>>>  -- 
>>>> For more options, visit http://beagleboard.org/discuss
>>>> --- 
>>>> You received this message because you are subscribed to the Google 
>>>> Groups "BeagleBoard" group.
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>>>> an email to beagleboard...@**googlegroups.com.
>>>>
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>>>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out>
>>>> .
>>>>
>>>
>>>  -- 
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Re: [beagleboard] SGX drivers on Kernel 3.8.13

[Giuseppe Iellamo]

It seems to me not very fair to say we have a board with a 3d accelerator, 
we sell it and we won't give you the driver nor the specs to use it...

To my understanding with 3.2 kernel it was working. Any advice on how to 
resume a working 3.2 distribution I may use?

Il giorno giovedì 24 ottobre 2013 22:21:12 UTC+2, Gerald ha scritto:
>
> As I understand it, the DRM driver is not compatible with the old SGX 
> frame buffer architecture. TI tells us they are not rewriting the code for 
> 3.8. Not sure about future kernel releases. Best bet would be to ask TI on 
> this one.
>
> Gerald
>
>
>
> On Thu, Oct 24, 2013 at 1:39 PM, >wrote:
>
>> Hi,
>>
>> What exactly is missing? I have read something about that the clock for 
>> GPU is not enabled. Can't we fix this or can't we get TI to fix this?
>>
>> Regards
>> Alexander
>>
>> Am Donnerstag, 24. Oktober 2013 15:07:11 UTC+2 schrieb RobertCNelson:
>>
>>> On Thu, Oct 24, 2013 at 3:10 AM,   wrote: 
>>> > Hello, 
>>> > 
>>> > I am currently trying to get OpenGL ES running on the Bone, but I get 
>>> some 
>>> > problems with the kernel modules. I already posted on the TI formus. 
>>> Maybe 
>>> > someone can help: 
>>> > http://e2e.ti.com/support/arm/**sitara_arm/f/791/t/298596.aspx
>>> >  
>>>
>>> See a few of the other threads in this forum for the full details on 
>>> this.. Essentially we do not have the needed bits from TI at this 
>>> time.. 
>>>
>>> Regards, 
>>>
>>> -- 
>>> Robert Nelson 
>>> http://www.rcn-ee.com/ 
>>>
>>  -- 
>> For more options, visit http://beagleboard.org/discuss
>> --- 
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>> email to beagleboard...@googlegroups.com .
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>>
>
>

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[beagleboard] uboot options

[Giuseppe Iellamo]

Where can i find the list of kernel parameters like qemu=1?

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[beagleboard] Re: eQep -quadrature encoder controller - anybody using it?

[Giuseppe Iellamo]

Hi all, 

just to let you know,

It turned out to be an electrical issue with the resistor used, the voltage 
level were good but maybe the current was too low. 

Now it works!

Thank you very much!

Giuseppe

Il giorno lunedì 14 ottobre 2013 15:07:48 UTC+2, James Zapico ha scritto:
>
> Giuseppe,
>
> I cheated a little in my setup. Instead of hooking up an encoder, I've 
> only hooked up two SPDT buttons I took from the inside of a ball mouse to 
> ground and 3.3V and pressed the buttons to generate gray code.
>
> I set mine up again to see if I could spot anything and came across a 
> little problem. Check your pinmux settings after loading the dtbo. When I 
> loaded the eqep2 dtbo provided by Teknoman117, the pinmux didn't change. 
> I've attached the output from my successful session where I load my custom 
> eqep2 dtbo on P8's 11 & 12. You might need to recompile the dtbo's.
>
> James
>
> On Monday, October 14, 2013 5:31:24 AM UTC-5, Giuseppe Iellamo wrote:
>>
>> Hi James,
>>
>> After a lot of other tests I'm quite sure the pins are hooked correct, 
>> really the eQep reads something, the only thing is tath it is continually 
>> underflow/Overflow...
>>
>> I'm experimentig varying the QEPCTL settings but without luck (until now).
>>
>> Giuseppe
>>
>> Il giorno sabato 12 ottobre 2013 22:41:58 UTC+2, James Zapico ha scritto:
>>>
>>> I came across that post and Teknoman's library a few weeks ago. I have 
>>> been able to compile it and get the eQEP to work on 3.8.13-bone28 Ubuntu 
>>> 12.04 (shortly before I carelessly shorted my BBB). Yes, the position sysfs 
>>> entry does change when I use it. The only problems I noticed were you have 
>>> to make sure you're hooked up to the correct pins, and the pullup/pulldown 
>>> settings don't seem to do anything in eQEP mode.
>>>
>>> On Friday, October 11, 2013 9:42:57 AM UTC-5, Giuseppe Iellamo wrote:
>>>>
>>>> Hi all,
>>>>
>>>> Since I want to use Beaglebone black in order to perform e motor 
>>>> position controller I need to use an Encoder. 
>>>> I'm struggling with the eQep configuration.
>>>>
>>>> Searching other posts I found this:
>>>>
>>>>
>>>> https://groups.google.com/forum/#!searchin/beagleboard/encoder/beagleboard/mE_ha4zOApM/VewMCyQx37kJ
>>>>
>>>> In which Teknoman117 released his own version of a kernel module driver.
>>>>
>>>> I compiled it, and it seems to work except that the posiotion sysfs 
>>>> entry is always 0.
>>>>
>>>> Has anybody ever used it?
>>>> Or Has anybaody used the eQep?
>>>>
>>>> I'm using a 3.8.13bone28 kernel with xenomai extensions...
>>>>
>>>

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[beagleboard] Re: eQep -quadrature encoder controller - anybody using it?

[Giuseppe Iellamo]

Hi James,

After a lot of other tests I'm quite sure the pins are hooked correct, 
really the eQep reads something, the only thing is tath it is continually 
underflow/Overflow...

I'm experimentig varying the QEPCTL settings but without luck (until now).

Giuseppe

Il giorno sabato 12 ottobre 2013 22:41:58 UTC+2, James Zapico ha scritto:
>
> I came across that post and Teknoman's library a few weeks ago. I have 
> been able to compile it and get the eQEP to work on 3.8.13-bone28 Ubuntu 
> 12.04 (shortly before I carelessly shorted my BBB). Yes, the position sysfs 
> entry does change when I use it. The only problems I noticed were you have 
> to make sure you're hooked up to the correct pins, and the pullup/pulldown 
> settings don't seem to do anything in eQEP mode.
>
> On Friday, October 11, 2013 9:42:57 AM UTC-5, Giuseppe Iellamo wrote:
>>
>> Hi all,
>>
>> Since I want to use Beaglebone black in order to perform e motor position 
>> controller I need to use an Encoder. 
>> I'm struggling with the eQep configuration.
>>
>> Searching other posts I found this:
>>
>>
>> https://groups.google.com/forum/#!searchin/beagleboard/encoder/beagleboard/mE_ha4zOApM/VewMCyQx37kJ
>>
>> In which Teknoman117 released his own version of a kernel module driver.
>>
>> I compiled it, and it seems to work except that the posiotion sysfs entry 
>> is always 0.
>>
>> Has anybody ever used it?
>> Or Has anybaody used the eQep?
>>
>> I'm using a 3.8.13bone28 kernel with xenomai extensions...
>>
>

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[beagleboard] eQep -quadrature encoder controller - anybody using it?

[Giuseppe Iellamo]

Hi all,

Since I want to use Beaglebone black in order to perform e motor position 
controller I need to use an Encoder. 
I'm struggling with the eQep configuration.

Searching other posts I found this:

https://groups.google.com/forum/#!searchin/beagleboard/encoder/beagleboard/mE_ha4zOApM/VewMCyQx37kJ

In which Teknoman117 released his own version of a kernel module driver.

I compiled it, and it seems to work except that the posiotion sysfs entry 
is always 0.

Has anybody ever used it?
Or Has anybaody used the eQep?

I'm using a 3.8.13bone28 kernel with xenomai extensions...

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[beagleboard] Re: A Guide for Determining Pin Mux Settings in the Device Tree:

[Giuseppe Iellamo]

But this tool is for BBW or BBB?

Il giorno lunedì 19 agosto 2013 15:39:48 UTC+2, Rafael Fiebig-Bindner ha 
scritto:
>
> Hi,
>
> I just found this tool: http://pinmux.tking.org/p9.html
> It does the same thing, but is a lot easier to use.
>
> Best regards
> Rafael
>

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[beagleboard] Re: ehrpwm: Period value conflicts with channel

[Giuseppe Iellamo]

Hi David, 

the simplest thing you could do is to rebuild the kernel driver using the 
patches as explained here.

http://saadahmad.ca/using-pwm-on-the-beaglebone-black/

I tried and it works as expected!

Il giorno lunedì 7 ottobre 2013 21:18:02 UTC+2, David Široký ha scritto:
>
> Hi guys!
>
> I'm trying to configure all (6) EHRPWM channels but I'm having troubles 
> setting period. I know that EHRPWMxA and EHRPWMxB must have the same period 
> but when I have then enabled, then there is no possible way to change the 
> period. Every attempt ends with dmesg:
>
> ehrpwm 48302200.ehrpwm: Period value conflicts with channel 0
>
> Is there any solution (without recompiling kernel)? I have Ubuntu 
> 2013-09-27 (from http://elinux.org/BeagleBoardUbuntu#Flasher).
>
> Thanks.
>
> David
>

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[beagleboard] State of the Linux Kernel 3.12

[Giuseppe Iellamo]

Hi  all, 

I'm developing a setup using two BBB, one as High Level Controller / GUI 
and one used as Low Level Controller/motor driver board.

For the GUI i would like to use some nice OpenGl accelerated GUI, and I've 
read in some old messages that this should be integrated in 3.12 kernel.

Is there any news in this regard? Apart from USB is kernel 3.12 usable at 
the moment?

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[beagleboard] [PWM] Changing two Duty Cycle in a synchronized way.

[Giuseppe Iellamo]

Hi all,

In my travel with BBB, I have succeded in driving a brushed dc motor with 
the BeagleBone Black but the interface given by pwm_test kernel module 
operate on one pwm at time.

The fact is that I need to to drive two complementary signals, so when I 
modify the duty cicle of one PWM i need to modify the other. 

Do you think that this is possible with the current module PWM_test ot do 
you think I need to develop a brand new module?

Giuseppe

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[beagleboard] BBB PWM and dead band

[Giuseppe Iellamo]

I'm trying to use the two channels of the ePWMHR with an H bridge driving 
the two channel with inverted polarity. Is it possible add a dead band???

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[beagleboard] Re: BBB RT patch

[Giuseppe Iellamo]

With the help of Charles Steinkuehler I brought up Xenomai on my BBB and it 
seems to work very well. The post is here:

https://groups.google.com/forum/#!category-topic/beagleboard/beaglebone-black/BC5Et2nQFOU

Il giorno martedì 1 ottobre 2013 03:44:36 UTC+2, wittend ha scritto:
>
> I am interested in tightening up the performance of the BBB as well.  I 
> would like to hear about either your experience with this or that of anyone 
> else who has tried it.
>
> Dave
>
> On Monday, September 30, 2013 2:32:07 PM UTC-5, jeshu wrote:
>>
>> Hello List,
>>
>> Previously I have implemented my applications with Real time kernel in my 
>> Beaglebone White using Robert Nelson's kernel. Now I am going to change the 
>> platform/board to BBB, I am unable to find any RT patched kernel. Can 
>> anybody post me the links where I can find the PT patched 3.8. kernel ?
>>
>> Thanks,
>> Jeshwanth
>> Bangalore
>>
>

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Re: [beagleboard] Xenomai on BBB

[Giuseppe Iellamo]

Thank you very much!
This is very valuable help for me!

Giuseppe


Il giorno martedì 24 settembre 2013 15:50:28 UTC+2, Charles Steinkuehler ha 
scritto:
>
> On 9/24/2013 8:21 AM, Giuseppe Iellamo wrote: 
> > I have seen on the internet different guides on using Xenomai with 
> > beagleboard... has anyone ever tried to compile xenomai on BBB w kernel 
> 3.8? 
>
> Just grab the build scripts from github and type "./build_kernel.sh": 
>
> https://github.com/cdsteinkuehler/linux-dev/tree/3.8.13-bone27-xenomai 
>
> ...or I have SD card images with the kernel and xenomai user-land 
> already installed and ready to run (along with LinuxCNC): 
>
> http://bb-lcnc.blogspot.com/p/machinekit_16.html 
>
> The BeagleBone 3.8.13 pre/post patch and required iPipe patches are all 
> in the latest Xenomai, which should be released Real Soon Now...mostly 
> waiting on some stuff from the 3.10 kernel, IIRC. 
>
> Credit to Robert C Nelson for the initial versions of the kernel and 
> image build scripts (also on github).  THANKS! 
>
> -- 
> Charles Steinkuehler 
> cha...@steinkuehler.net  
>
>

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[beagleboard] Xenomai on BBB

[Giuseppe Iellamo]

I have seen on the internet different guides on using Xenomai with 
beagleboard... has anyone ever tried to compile xenomai on BBB w kernel 3.8?

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[beagleboard] StarterWare on beaglebone black?

[Giuseppe Iellamo]

Is it possible to use beaglebone black with Starterware without using a 
JTAG connector?

I'm currently using a UBUNTU distro but I wanted to do a motor control 
application...

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