Re: [beagleboard] Building a 2gb lxqt version

[Gaurav]

Thanks, Robert. Much appreciated!


Gaurav

On Thu, Jan 5, 2017 at 9:19 PM, Robert Nelson 
wrote:

> On Thu, Jan 5, 2017 at 9:14 PM, Rick Mann  wrote:
> >
> >> On Jan 5, 2017, at 18:36 , Robert Nelson 
> wrote:
> >>
> >> that's why we just say beefy ARM system..
> >
> > What qualifies as "beefy" (and that I can get today)? Something like
> this?
> >
> > http://www.hardkernel.com/main/products/prdt_info.php?g_
> code=G143452239825
>
> 2GB, Dual Core with onboard sata is fine..
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>

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Re: [beagleboard] Building a 2gb lxqt version

[William Hermans]

err, Samsung emmc modules can't be used with Samsung processors*

On Thu, Jan 5, 2017 at 10:28 PM, William Hermans  wrote:

> Rick, Yes, and in fact I'm going to buy one myself very soon because it
> has 2G ram quad A15's and quad A7's, GbE that's true GbE( not shared with
> another bus ) and USB 3.0. Plus, the emmc option is pretty dahmed fast in
> most cases. I think the Sandisk module( Samsung modules can't be used with
> Samsung modules for some reason ), which has to be used with the XU4, has
> fairly slow write speeds( 24-ish MB/s ) in the 16G emmc. But has amazingly
> fast reads at around 150MB/s.
>
> Anyway, it's not a mustang board with 16G ram or anything like that, but
> it also doesn't cost ~$1800 USD.
>
> On Thu, Jan 5, 2017 at 8:19 PM, Robert Nelson 
> wrote:
>
>> On Thu, Jan 5, 2017 at 9:14 PM, Rick Mann  wrote:
>> >
>> >> On Jan 5, 2017, at 18:36 , Robert Nelson 
>> wrote:
>> >>
>> >> that's why we just say beefy ARM system..
>> >
>> > What qualifies as "beefy" (and that I can get today)? Something like
>> this?
>> >
>> > http://www.hardkernel.com/main/products/prdt_info.php?g_cod
>> e=G143452239825
>>
>> 2GB, Dual Core with onboard sata is fine..
>>
>> Regards,
>>
>> --
>> Robert Nelson
>> https://rcn-ee.com/
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
>> ---
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>> gid/beagleboard/CAOCHtYjWSg8%3DKzszkzH_%2BWVhupc8KBAyHTgdQU
>> a2npn8nD64AQ%40mail.gmail.com.
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>

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Re: [beagleboard] Building a 2gb lxqt version

[William Hermans]

Rick, Yes, and in fact I'm going to buy one myself very soon because it has
2G ram quad A15's and quad A7's, GbE that's true GbE( not shared with
another bus ) and USB 3.0. Plus, the emmc option is pretty dahmed fast in
most cases. I think the Sandisk module( Samsung modules can't be used with
Samsung modules for some reason ), which has to be used with the XU4, has
fairly slow write speeds( 24-ish MB/s ) in the 16G emmc. But has amazingly
fast reads at around 150MB/s.

Anyway, it's not a mustang board with 16G ram or anything like that, but it
also doesn't cost ~$1800 USD.

On Thu, Jan 5, 2017 at 8:19 PM, Robert Nelson 
wrote:

> On Thu, Jan 5, 2017 at 9:14 PM, Rick Mann  wrote:
> >
> >> On Jan 5, 2017, at 18:36 , Robert Nelson 
> wrote:
> >>
> >> that's why we just say beefy ARM system..
> >
> > What qualifies as "beefy" (and that I can get today)? Something like
> this?
> >
> > http://www.hardkernel.com/main/products/prdt_info.php?g_
> code=G143452239825
>
> 2GB, Dual Core with onboard sata is fine..
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
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> msgid/beagleboard/CAOCHtYjWSg8%3DKzszkzH_%2BWVhupc8KBAyHTgdQUa2npn8nD64A
> Q%40mail.gmail.com.
> For more options, visit https://groups.google.com/d/optout.
>

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Re: [beagleboard] Building a 2gb lxqt version

[Robert Nelson]

On Thu, Jan 5, 2017 at 9:14 PM, Rick Mann  wrote:
>
>> On Jan 5, 2017, at 18:36 , Robert Nelson  wrote:
>>
>> that's why we just say beefy ARM system..
>
> What qualifies as "beefy" (and that I can get today)? Something like this?
>
> 
> http://www.hardkernel.com/main/products/prdt_info.php?g_code=G143452239825

2GB, Dual Core with onboard sata is fine..

Regards,

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

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Re: [beagleboard] Building a 2gb lxqt version

[Rick Mann]

> On Jan 5, 2017, at 18:36 , Robert Nelson  wrote:
> 
> that's why we just say beefy ARM system..

What qualifies as "beefy" (and that I can get today)? Something like this?


http://www.hardkernel.com/main/products/prdt_info.php?g_code=G143452239825





-- 
Rick Mann
rm...@latencyzero.com


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Re: [beagleboard] Building a 2gb lxqt version

[Robert Nelson]

On Thu, Jan 5, 2017 at 4:14 PM, Gaurav S  wrote:
> Hello All,
>
> Question: I have noticed the recent builds of lxqt come only in 4GB flavor.

It was starting to bit rot, as i didn't personally test it anymore..
(it might not even fit on a 2gb bbb anymore)

> Instead of manually deleting files I was wondering I could get access to a
> 2GB version with the latest kernel versions?

Just fired up a build:

http://rcn-ee.homeip.net:8080/view/Weekly/job/weekly_bb.org_bb.org-debian-jessie-lxqt-2gb-v4.4/1/console

Should have something uploaded in a hour or two..

>
> If they don't exist, how do I go about generating one?
>
> The elinux wiki page
> (http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Debian_Build_Instructions)
> provides some instructions but it clearly states I should use a "fairly
> beefy ARM system". All I have access to is a Beaglebone black rev C. I can
> try building on that but if there are scripts which could do the job on a
> fairly powerful intel/amd machine, i would prefer that instead.

qemu (x86 emulation of arm) is just too hit/miss to recommend it,
that's why we just say beefy ARM system..

> Using a console version is not an option since I need to build a gui as
> well, hence starting from lxqt seems logical to me. However, if I am wrong
> please correct me.

Regards,

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

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Re: [beagleboard] Error using connmanctl> enable wifi BBBW

[Robert Nelson]

On Thu, Jan 5, 2017 at 8:27 PM, Kevin Gordon  wrote:
> I have received a BBBW yesterday. I booted from a SD Card (which has image
> bone-debian-8.6-lxqt-4gb-armhf-2016-11-06-4gb) previously used on a BBB rev
> C. Everything functions the same on the BBBW as on the BBB except the
> network (wired) (the only item listed in connman gui) is not functioning
> (fair enough). When I run connmanctl> enable wifi BBBW I have error
> message:"Method "SetProperty" with signature "sv" on interface
> "net.connman.Technology" doesn't exist".
> Is there a solution for this please?

Just grab this build:

https://rcn-ee.net/rootfs/bb.org/testing/2017-01-04/lxqt-4gb/

The initial "connman/tether" setup I setup for out of the box was
sub-optimal for the BBBW..

(it assumes your making a wifi access point)..

flash the newest lxqt-4gb image from yesterday

Out of the new image, you can ssh into the wifi access point
(BeagleBone-WXYZ) and use connmanctl to connect to a 2nd access point
(while still connected to the BBBW thru wifi)..

Regards,

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

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[beagleboard] Error using connmanctl> enable wifi BBBW

[Kevin Gordon]

I have received a BBBW yesterday. I booted from a SD Card (which has image 
bone-debian-8.6-lxqt-4gb-armhf-2016-11-06-4gb) previously used on a BBB rev 
C. Everything functions the same on the BBBW as on the BBB except the 
network (wired) (the only item listed in connman gui) is not functioning 
(fair enough). When I run connmanctl> enable wifi BBBW I have error 
message:"Method "SetProperty" with signature "sv" on interface 
"net.connman.Technology" doesn't exist".
Is there a solution for this please?
Kevin.

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Re: [beagleboard] Re: PRU cycle counter overflow

[Justin Pearson]

Thanks Charles, that's very helpful. I didn't know about the IEP timer. TRM
section 4.4.3.1 says I can hook up the IEP clock source to either iep_clk
or ocp_clk. Which one of those clocks drives the PRU cycle counter?

Thanks,
Justin



On Thu, Dec 22, 2016 at 1:43 PM, Charles Steinkuehler <
char...@steinkuehler.net> wrote:

> On 12/22/2016 10:45 AM, Justin Pearson wrote:
> > I have the same question.
> >
> > I'm using the PRU's 200 MHz cycle counter to timestamp sensor
> measurements. At
> > 200 MHz, this 32-bit counter overflows in 20 seconds. I would like to
> notify a C
> > program running on the 1GHz host ARM processor as soon as it overflows.
> >
> > *Is it possible to configure the PRU cycle counter to trigger an
> interrupt in
> > the host ARM when it overflows?*
>
> Do you mean the Cycle register (offset 0x0C in the PRU_ICSS_PRU_CTRL
> register bank)?  If so, this counter doesn't even wrap around (it
> automatically stops when it hits 0x) much less generate an
> interrupt.
>
> > I know how to write PRU code to make the PRU trigger an interrupt in the
> host,
> > but that's not quite what I want, since my PRU will be busy doing other
> things.
> > I would like the cycle counter to trigger an interrupt automatically,
> without
> > the PRU having to check if it has overflowed.
>
> Try using the IEP timer.  It will wrap automatically, and you can even
> setup a configurable period by using compare register zero and setting
> the CMP0_RST_CNT_EN bit.  You can also route an IEP timer event
> (pr1_iep_tim_cap_cmp_pend) to the ARM core to generate an interrupt.
>
> --
> Charles Steinkuehler
> char...@steinkuehler.net
>
> --
> For more options, visit http://beagleboard.org/discuss
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[beagleboard] Building a 2gb lxqt version

[Gaurav S]

Hello All,

Question: I have noticed the recent builds of lxqt come only in 4GB flavor.

Instead of manually deleting files I was wondering I could get access to a 
2GB version with the latest kernel versions? 

If they don't exist, how do I go about generating one? 

The elinux wiki page 
(http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Debian_Build_Instructions)
 
provides some instructions but it clearly states I should use a "fairly 
beefy ARM system". All I have access to is a Beaglebone black rev C. I can 
try building on that but if there are scripts which could do the job on a 
fairly powerful intel/amd machine, i would prefer that instead. 

Using a console version is not an option since I need to build a gui as 
well, hence starting from lxqt seems logical to me. However, if I am wrong 
please correct me.

Thanks
Gaurav

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Re: [beagleboard] Can the EEPROM on BB capes generate a Device Tree Overlay without one being present first on the BB?

[arochagus via BeagleBoard]

On Thu, 1/5/17, Robert Nelson  wrote:

 Subject: Re: [beagleboard] Can the EEPROM on BB capes generate a Device Tree 
Overlay without one being present first on the BB?
 To: "Beagle Board" 
 Cc: cprys...@gmail.com
 Date: Thursday, January 5, 2017, 5:29 PM
 
 On Thu, Jan 5, 2017 at
 8:09 AM, Charlie Rysenga 
 wrote:
 > According to the SRM
 (8.2.4&5) the EEPROM of capes contains information to
 > mux all of the pins needed for the
 cape.
 >
 > But, I have
 found conflicting answers for my question.
 >
 > Here (and in 2013) it
 says that it cannot but here (and more recently) it
 > implies that it can.
 >
 > Can anyone point me
 to a more definitive answer?
 
 While it is in the spec, that feature ended up
 being never used in production.
 
 Currently we just read the part_number and
 version from the eeprom and
 read the
 matching overlay..
 
 As i
 currently hack on u-boot, that "feature" would
 have been nice for
 dependency tracking.
 ;)
 
 Regards,
 
 -- 
 Robert
 Nelson
 https://rcn-ee.com/
 
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[beagleboard] Re: Mcbsp error

[Ran Shalit]

Hello,

I know it's old thread.
But did you resolve it ?

Can you please share the solution if possible ?

Thank you!
Ran

On Tuesday, October 19, 2010 at 2:21:35 PM UTC+3, fozay wrote:
>
> Hello everybody; 
>
> i try to insmod my mcbsp driver but i obtain these errors. Ijust try 
> to init and exit. What is the reason do you have any idea? 
>
>
> ERROR: 
> [75640.283355] Unable to handle kernel NULL pointer dereference at 
> virtual address  
> [75640.291900] pgd = ce798000 
> [75640.294891] [] *pgd=8e6c8031, *pte=, *ppte= 
> [75640.301239] Internal error: Oops: 17 [#6] PREEMPT 
> [75640.305938] last sysfs file: /sys/devices/platform/i2c_omap.1/ 
> i2c-1/1-0049/twl4030_pwrbutton/input/input1/capabilities/sw 
> [75640.316955] Modules linked in: mcbsp_start_2_dif1(+) 
> mcbsp_start_2_dif(+) mcbsp_start_1_req(+) mcbsp_start_1_conf4(+) 
> mcbsp_start_1_conf3(+) mcbsp_start_] 
> [75640.346496] CPU: 0Tainted: G  D W   (2.6.32 #3) 
> [75640.351776] PC is at omap_mcbsp_config+0x28/0xb0 
> [75640.356445] LR is at mcbsp_init+0x18/0x44 [mcbsp_start_2_dif1] 
> [75640.362304] pc : []lr : []psr: 8013 
> [75640.362304] sp : cdc29f58  ip :   fp :  
> [75640.373840] r10: 0004  r9 : cdc28000  r8 : c003c144 
> [75640.379089] r7 :   r6 : bf17b030  r5 : bf17b0c8  r4 : 
>  
> [75640.385650] r3 : c06758a4  r2 : cdc28000  r1 :   r0 : 
>  
> [75640.392211] Flags: Nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM 
> Segment user 
> [75640.399383] Control: 10c5387d  Table: 8e798019  DAC: 0015 
> [75640.405151] Process insmod (pid: 4210, stack limit = 0xcdc282f0) 
> [75640.411193] Stack: (0xcdc29f58 to 0xcdc2a000) 
> [75640.415588] 
> 9f40:    
> c003b384 
> [75640.423797] 9f60: 0c74 bf17b0c8  00012018 c003c144 
>  bf17b0c8  
> [75640.432037] 9f80: 00012018 c00a0214 0004 cf817980 cdf391c0 
> 4000e920 4000 00012018 
> [75640.440246] 9fa0: 0080 c003bfc0 4000e920 4000 00012018 
> 0c74 00012008 0001 
> [75640.448486] 9fc0: 4000e920 4000 00012018 0080 00012008 
>  0004  
> [75640.456695] 9fe0: bec97e72 bec97bfc 8e90 400e9264 6010 
> 00012018   
> [75640.464935] [] (omap_mcbsp_config+0x28/0xb0) from 
> [] (mcbsp_init+0x18/0x44 [mcbsp_start_2_dif1]) 
> [75640.47] [] (mcbsp_init+0x18/0x44 
> [mcbsp_start_2_dif1]) from [] (do_one_initcall+0x5c/0x1bc) 
> [75640.486053] [] (do_one_initcall+0x5c/0x1bc) from 
> [] (sys_init_module+0xc0/0x1f0) 
> [75640.495239] [] (sys_init_module+0xc0/0x1f0) from 
> [] (ret_fast_syscall+0x0/0x2c) 
> [75640.504364] Code: e59f1084 e59f0084 ea10cf37 e59f3080 (e1d110b0) 
> [75640.515167] ---[ end trace d622b392ba50038f ]--- 
> Segmentation fault 
>
>
> CODE: 
>
>
>
>
> #include  
> #include  
> #include  
>
> MODULE_LICENSE("GPL"); 
>
>  const struct omap_mcbsp_reg_cfg *config; 
>
> static int mcbsp_init(void) 
> { 
> omap_mcbsp_config(0, config); 
>
> omap_mcbsp_start(0,500,700); 
> printk(KERN_INFO "Hello,world\n"); 
> return 0; 
> } 
>
> static int mcbsp_exit(void) 
> { 
>
> omap_mcbsp_stop(0,500,500); 
>
> printk(KERN_INFO "goodbye all\n"); 
> return 0; 
> } 
>
> module_init(mcbsp_init); 
> module_exit(mcbsp_exit); 
>

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Re: [beagleboard] Can the EEPROM on BB capes generate a Device Tree Overlay without one being present first on the BB?

[Robert Nelson]

On Thu, Jan 5, 2017 at 8:09 AM, Charlie Rysenga  wrote:
> According to the SRM (8.2.4&5) the EEPROM of capes contains information to
> mux all of the pins needed for the cape.
>
> But, I have found conflicting answers for my question.
>
> Here (and in 2013) it says that it cannot but here (and more recently) it
> implies that it can.
>
> Can anyone point me to a more definitive answer?

While it is in the spec, that feature ended up being never used in production.

Currently we just read the part_number and version from the eeprom and
read the matching overlay..

As i currently hack on u-boot, that "feature" would have been nice for
dependency tracking. ;)

Regards,

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

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[beagleboard] Can the EEPROM on BB capes generate a Device Tree Overlay without one being present first on the BB?

[Charlie Rysenga]

According to the SRM (8.2.4&5) the EEPROM of capes contains information to 
mux all of the pins needed for the cape. 

But, I have found conflicting answers for my question.

Here (and in 2013)  it 
says that it cannot but here (and more recently) 
it 
implies that it can.

Can anyone point me to a more definitive answer?

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Re: [beagleboard] InitRamFs

[Micka]

Thx for all, I understand better what is it now.

Micka,

Le jeu. 5 janv. 2017 à 13:01, William Hermans  a écrit :

> My last worklog working with the initrd, which by the way is not required
> _just_to_add_ overlays. Robert has a script that can do this automatically
> for you. Just keep in mind that I tend to make small mistakes once in a
> while so my work logs can be superfluous . . .
>
> http://pastebin.com/naKbbRWd
>
>
> On Thu, Jan 5, 2017 at 4:39 AM, William Hermans  wrote:
>
>
>
> On Thu, Jan 5, 2017 at 4:28 AM, Micka  wrote:
>
> I saw that. But was not sure. The idea is to save the state of your ram?
>
>
> I don't understand your question. But an initial ram disk is a very
> minimalist Linux file system that is loaded at boot. Used for loading
> various drivers, early. So for instance if you wanted to boot from say an
> iSCSI type disk, You'd very likely have to initialize it through an initrd.
>
> Anyway, my definition is rather crude, like I said I'm going form pure
> memory, and my memory is not always accurate. Better that you google for
> your answers.
>
>
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Re: [beagleboard] InitRamFs

[William Hermans]

Oh, and for additional informational purposes. ~/dev on my system is an NFS
share, I would not recommend writing files to the emmc, or an sdcard .  ..

On Thu, Jan 5, 2017 at 5:01 AM, William Hermans  wrote:

> My last worklog working with the initrd, which by the way is not required
> _just_to_add_ overlays. Robert has a script that can do this automatically
> for you. Just keep in mind that I tend to make small mistakes once in a
> while so my work logs can be superfluous . . .
>
> http://pastebin.com/naKbbRWd
>
>
> On Thu, Jan 5, 2017 at 4:39 AM, William Hermans  wrote:
>
>>
>>
>> On Thu, Jan 5, 2017 at 4:28 AM, Micka  wrote:
>>
>>> I saw that. But was not sure. The idea is to save the state of your ram?
>>>
>>>
>> I don't understand your question. But an initial ram disk is a very
>> minimalist Linux file system that is loaded at boot. Used for loading
>> various drivers, early. So for instance if you wanted to boot from say an
>> iSCSI type disk, You'd very likely have to initialize it through an initrd.
>>
>> Anyway, my definition is rather crude, like I said I'm going form pure
>> memory, and my memory is not always accurate. Better that you google for
>> your answers.
>>
>
>

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Re: [beagleboard] InitRamFs

[William Hermans]

My last worklog working with the initrd, which by the way is not required
_just_to_add_ overlays. Robert has a script that can do this automatically
for you. Just keep in mind that I tend to make small mistakes once in a
while so my work logs can be superfluous . . .

http://pastebin.com/naKbbRWd


On Thu, Jan 5, 2017 at 4:39 AM, William Hermans  wrote:

>
>
> On Thu, Jan 5, 2017 at 4:28 AM, Micka  wrote:
>
>> I saw that. But was not sure. The idea is to save the state of your ram?
>>
>>
> I don't understand your question. But an initial ram disk is a very
> minimalist Linux file system that is loaded at boot. Used for loading
> various drivers, early. So for instance if you wanted to boot from say an
> iSCSI type disk, You'd very likely have to initialize it through an initrd.
>
> Anyway, my definition is rather crude, like I said I'm going form pure
> memory, and my memory is not always accurate. Better that you google for
> your answers.
>

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Re: [beagleboard] InitRamFs

[William Hermans]

On Thu, Jan 5, 2017 at 4:28 AM, Micka  wrote:

> I saw that. But was not sure. The idea is to save the state of your ram?
>
>
I don't understand your question. But an initial ram disk is a very
minimalist Linux file system that is loaded at boot. Used for loading
various drivers, early. So for instance if you wanted to boot from say an
iSCSI type disk, You'd very likely have to initialize it through an initrd.

Anyway, my definition is rather crude, like I said I'm going form pure
memory, and my memory is not always accurate. Better that you google for
your answers.

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Re: [beagleboard] InitRamFs

[Micka]

I saw that. But was not sure. The idea is to save the state of your ram?


Thx,

On Thu, Jan 5, 2017, 12:14 William Hermans  wrote:

> You should really google this Micka,
>
> But initrd == initial ram disk, and initramfs is a cpio archived initial
> ram disk.
>
> On Thu, Jan 5, 2017 at 3:50 AM, Micka  wrote:
>
> Hi, I would like how is it initialized in the beaglebone black ?
>
> What is initrd.img for ?
>
>
> Micka,
>
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Re: [beagleboard] InitRamFs

[William Hermans]

Well. all this is from memory, so, I'm remembering that initramfs can be of
two types, but I seem to recall that there is non compressed, and gzip
compressed types of initrd's

debian@beaglebone:~$ sudo apt-get install file

debian@beaglebone:~$ sudo file /boot/initrd.img-4.4.9-bone-rt-r10
*/boot/initrd.img-4.4.9-bone-rt-r10: gzip compressed data, last modified:
Mon Jan  2 05:05:08 2017, from Unix*


On Thu, Jan 5, 2017 at 4:14 AM, William Hermans  wrote:

> You should really google this Micka,
>
> But initrd == initial ram disk, and initramfs is a cpio archived initial
> ram disk.
>
> On Thu, Jan 5, 2017 at 3:50 AM, Micka  wrote:
>
>> Hi, I would like how is it initialized in the beaglebone black ?
>>
>> What is initrd.img for ?
>>
>>
>> Micka,
>>
>> --
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>> 
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>>
>
>

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Re: [beagleboard] InitRamFs

[William Hermans]

You should really google this Micka,

But initrd == initial ram disk, and initramfs is a cpio archived initial
ram disk.

On Thu, Jan 5, 2017 at 3:50 AM, Micka  wrote:

> Hi, I would like how is it initialized in the beaglebone black ?
>
> What is initrd.img for ?
>
>
> Micka,
>
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[beagleboard] InitRamFs

[Micka]

Hi, I would like how is it initialized in the beaglebone black ?

What is initrd.img for ?


Micka,

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