[beagleboard] Re: BeagleBone Black Cape Compatibity

[Joshua Datko]

How does one get a cape on this list?  I've been working with SparkFun to 
build the CryptoCape [1], which I think will be ready in just over a month. 
 Do I need to provide the EEPROM file or just send a cape to someone at 
BeagleBoard.org to test it out?

Josh


[1] http://beagleboard.org/project/cryptocape

On Thursday, May 16, 2013 9:58:16 AM UTC-6, David Anders wrote:
>
> A list of the status of capes that can be used with the BeagleBone Black 
> can be found at:
>
> http://www.elinux.org/BeagleBone_Black_Capes
>

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[beagleboard] 1-Wire (owfs) working via gpio under Ubuntu; mysteries remain...

[Loren Amelang]

I've installed owfs and can read DS18B20 temperatures via 1-Wire on my A5C 
BBB with Ubuntu 12.04 - even over the web! 

The dts overlay loads at startup:
---
[  760.176601] bone-capemgr bone_capemgr.9: part_number 'w1', version 'N/A'
[  760.176888] bone-capemgr bone_capemgr.9: slot #7: 'Override Board 
Name,00A0,Override Manuf,w1'
[  760.181051] bone-capemgr bone_capemgr.9: slot #7: Requesting part 
number/version based 'w1-00A0.dtbo
[  760.181119] bone-capemgr bone_capemgr.9: slot #7: Requesting firmware 
'w1-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[  760.189259] bone-capemgr bone_capemgr.9: slot #7: dtbo 'w1-00A0.dtbo' 
loaded; converting to live tree
---

And the owfs modules load:
---
 * Starting 1-Wire FTP server owftpd[ OK ]
 * Starting 1-Wire HTTP Daemon owhttpd[ OK ]
 * Starting 1-Wire TCP Server owserver[ OK ]
---

And they show up in ps:
---
root   469 1  0 21:20 ?00:00:00 /usr/bin/owftpd -c 
/etc/owfs.conf
root   521 1  0 21:20 ?00:00:00 /usr/bin/owhttpd -c 
/etc/owfs.conf
root   549 1  0 21:20 ?00:00:00 /usr/bin/owserver -c 
/etc/owfs.conf
---
Note they were called with the config file /etc/owfs.conf...  

I can start the 1-Wire access to gpio 45:
---
--> Verify HDMI disabled:
ubuntu@ubuntu-armhf:~$ cat /sys/devices/bone_capemgr.9/slots
...
 5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
 6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
--> no L on HDMI slots

--> The sudo and sh tricks don't work for me; full su is required:
ubuntu@ubuntu-armhf:~$ su
Password:
root@ubuntu-armhf:/home/ubuntu# echo w1 >/sys/devices/bone_capemgr.9/slots
---
The 1-Wire activity on GPIO45 P8_11 is instantly active.

Verifying device tree override:
---
ubuntu@ubuntu-armhf:~$ cat /sys/devices/bone_capemgr.9/slots
...
 7: ff:P-O-L Override Board Name,00A0,Override Manuf,w1
---


I can try to read temperature; using the default GPIO pullup, or anything 
over 5K ohms:
---
ubuntu@ubuntu-armhf:~$ cat 
/sys/devices/w1_bus_master1/28-00884d88/w1_slave
50 05 4b 46 7f ff 0c 10 1c : crc=1c YES
50 05 4b 46 7f ff 0c 10 1c t=85000
---
It has accurately read the ID of my 1-Wire chip, but the temperature 
reading is always 85C - the default value when the 18B20 chip has not been 
told to make a conversion, or has not been given enough time or power to 
complete it. 

With the 4.7K pullup that most sites seem to recommend, I get a different 
but stable value:
---
ubuntu@ubuntu-armhf:~$ cat 
/sys/devices/w1_bus_master1/28-00884d88/w1_slave
ff 07 4b 46 7f ff 01 10 2f : crc=2f YES
ff 07 4b 46 7f ff 01 10 2f t=127937
---

Clipping my 4.7K and 10K resistors in parallel for 3197 ohms, I get real 
temperatures!
---
ubuntu@ubuntu-armhf:~$ cat 
/sys/devices/w1_bus_master1/28-00884d88/w1_slave
e5 01 4b 46 7f ff 0b 10 be : crc=be YES
e5 01 4b 46 7f ff 0b 10 be t=30312
---


There are several threads on the web saying the default time allowed 
between the setup of the 18B20 conversion and the attempt to read it is too 
short. The times they quote don't match what I see at all. On my scope the 
full read takes just over 20 mS, with a pause from the 0.5 mS point to 
about 4 mS; the individual pulses are roughly 5 or 25 uS. Since the quoted 
conversion time for the 18B20 at 12 bits is 750 mS, that 3.5 mS pause can't 
be the conversion. The software must read the chip first, and then request 
the conversion to take place during the interval between reads, which by 
default is ten seconds. 

I suspect the reports I found were on the edge of not enough pullup rather 
than not enough conversion time, but I'd like to explore further. With a 
reading only once every ten seconds, it is hard to debug this issue using 
my ancient analog scope, so I want to increase the read frequency. 


-
An OWFS configuration file is specified on the command line:
owfs -c config_file [other options]
The file name is arbitrary, there is no default configuration file used.
-

I added "timeout_volatile 1" to /etc/owfs.conf, and now my owserver shows 
the new value:
http://localhost:2121/settings/timeout
-
volatile 1 CHANGE
-

But the actual readings on GPIO45 are still at the 10 second default value. 
Here's the interesting part - all of the owfs documentation says the 
default value is 15 seconds, not 10! It looks like the BBB implementation 
is ignoring both the standard default 15 and my new timeout_volatile of 1 
second. What controls BBB w1 timing? 


Everything I read about generic owfs says you must choose one or more of 
TTY, USB, I2C, address:port, FAKE, or TESTER. None of those seem 
appropriate for my BBB installation, which seems to be referred to as "w1" 
or "w1_bus_master1". My owfs is obviously reading the device ID and the 
temperature from my 1-Wire chip, but the owserver is not reporting it to 
the web interface. 

Turns out editing /etc/owfs.conf to include:

Re: [beagleboard] Re: BBB JTAG for iJet (IAR/Segger)

[gkilley]

No Linux. I plan on porting uC/OS-II and maybe StarterWare for some of the 
low priority drivers (items where speed isn't critical to the overall 
application).

Grant

On Friday, March 21, 2014 6:53:49 PM UTC-6, john3909 wrote:
>
>
> From: >
> Reply-To: >
> Date: Friday, March 21, 2014 at 5:51 PM
> To: >
> Subject: [beagleboard] Re: BBB JTAG for iJet (IAR/Segger)
>
> John,
> If everyone used the same JTAG it would make things too easy!!!
>
> I'm using IAR EWARM.
>
> So no Linux?
>
>
> Making an adapter board isn't hard so I guess that's what I'll do. I'll 
> just grad a small pad-per-hole proto board and hotwire it together.
>
> Thanks again for the help!
> Grant
>
>
> On Thursday, March 20, 2014 8:31:26 PM UTC-6, gki...@gmail.com wrote:
>>
>> Does anyone know of a JTAG adapter for the BBB that will connect to the 
>> IAR/Segger iJet?
>>
>> The Samtec FTR-110-03-G-D-06 does not have the correct spacing or pin-out.
>> The two rows have the correct pin-to-pin spacing but the two rows are too 
>> far apart (.05inX.05in pitch)
>> The IAR interface has the following pinout:
>> 1 VTref   2 SWDIO/TMS
>> 3 GND   4 SWCLK/TCK
>> 5 GND   6 SWO/TDO
>> 7 N/C 8 TDI
>> 9 GNC  10 nRESET
>> 11 TgtPwr 12 N/C
>> 13 TgtPwr 14 N/C
>> 15 GND 16 N/C
>> 17 GND 18 N/C
>> 19 GND 20 N/C
>>
>> Thanks in advance for any help!!!
>>
> -- 
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Re: [beagleboard] Re: Kernel panic - not syncing: No init found. Try passing init= option to kernel.

[William Hermans]

Doesnt Ubuntu use dash by default ?


On Fri, Mar 21, 2014 at 6:22 PM, Douglas Jerome wrote:

> On 03/19/14 23:53, siva kumar wrote:
>
>> hai,
>> yes u r right , i try to mount my file system using nfs,
>> i also cross checked my rootfs that shows that /bin/bash file not
>>   available ..
>> i dont know how that was missed ..!!!
>> when i look out my targetNFS directory (which is my actual nfs mount
>> folder)
>> the following dir's available
>> *bin   dev  home  media  proc  sbin  sys  usr*
>> *boot  etc  lib   mntruntmp  var*
>> inside /bin i'm not able to find any executable like *bash.*
>> *but all the files are compiled for  arm arch . *
>> *i ran *
>> *targetNFS/bin#file **
>> *
>> ash:symbolic link to `busybox
>> busybox:ELF 32-bit LSB executable, ARM, version
>> 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16,
>> stripped
>> cat:symbolic link to `busybox'
>> chattr: symbolic link to `busybox'
>> chgrp:  symbolic link to `busybox'
>> chmod:  symbolic link to `busybox'
>> chown:  symbolic link to `busybox'
>>
>> *
>> and so on ..
>>
>>   .
>  .
>  .
>
>>
>> regards
>> siva
>>
>
>
> I suggest you set init to /bin/ash and see if you get a shell
> when you boot.  Also *look* for init in the file system; it
> probably is /sbin/init, but verify you know where it is and after
> you see the init=/bin/ash work then try your verified init pathname.
>
>
> --
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Re: [beagleboard] Re: Kernel panic - not syncing: No init found. Try passing init= option to kernel.

[Douglas Jerome]

On 03/19/14 23:53, siva kumar wrote:

hai,
yes u r right , i try to mount my file system using nfs,
i also cross checked my rootfs that shows that /bin/bash file not
  available ..
i dont know how that was missed ..!!!
when i look out my targetNFS directory (which is my actual nfs mount folder)
the following dir's available
*bin   dev  home  media  proc  sbin  sys  usr*
*boot  etc  lib   mntruntmp  var*
inside /bin i'm not able to find any executable like *bash.*
*but all the files are compiled for  arm arch . *
*i ran *
*targetNFS/bin#file **
*
ash:symbolic link to `busybox
busybox:ELF 32-bit LSB executable, ARM, version
1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16,
stripped
cat:symbolic link to `busybox'
chattr: symbolic link to `busybox'
chgrp:  symbolic link to `busybox'
chmod:  symbolic link to `busybox'
chown:  symbolic link to `busybox'

*
and so on ..


 .
 .
 .


regards
siva



I suggest you set init to /bin/ash and see if you get a shell
when you boot.  Also *look* for init in the file system; it
probably is /sbin/init, but verify you know where it is and after
you see the init=/bin/ash work then try your verified init pathname.


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[beagleboard] Re: BBB and element 14 BB-View cape

[dlhester62]

I flashed the latest angstrom image onto the BBB then used putty from my 
windows computer to follow the instructions on the BB view datasheet found 
on the element 14 website.   I did have to flash the BBB several times with 
different versions of angstrom before I found the right version. I was just 
about to write the BB view off when I gave it one more go with the latest 
angstrom image.

I will let you know the image name when I get home and check the BBB.

On Friday, 21 March 2014 15:01:27 UTC, gonda...@gmail.com wrote:
>
> I am on the same path as you but still not figure out how to get it up and 
> running. I will try during the weekend. Did you figure out how to manage 
> this cape?
>
> Michal
>
> On Friday, January 24, 2014 12:34:44 AM UTC+1, dlhes...@gmail.com wrote:
>>
>> I have just got the BB-view cape with an 7inch lcd but can't get the 
>> thing working, I have tried flashing the TI images froom element 14 and the 
>> angstrom image but neither seam to work. Have I wasted my money? I am 
>> currently using a A5A BBB, I have ordered another BBB which I think may be 
>> an A6 just to see if it's my BBB.
>>
>> Does anyone have any experience of the BB-View or can point me in the 
>> right direction?
>>
>

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Re: [beagleboard] Re: BBB JTAG for iJet (IAR/Segger)

[John Syn]

From:  
Reply-To:  
Date:  Friday, March 21, 2014 at 5:51 PM
To:  
Subject:  [beagleboard] Re: BBB JTAG for iJet (IAR/Segger)

> John,
> If everyone used the same JTAG it would make things too easy!!!
> 
> I'm using IAR EWARM.
So no Linux?
> 
> Making an adapter board isn't hard so I guess that's what I'll do. I'll just
> grad a small pad-per-hole proto board and hotwire it together.
> 
> Thanks again for the help!
> Grant
> 
> 
> On Thursday, March 20, 2014 8:31:26 PM UTC-6, gki...@gmail.com wrote:
>> Does anyone know of a JTAG adapter for the BBB that will connect to the
>> IAR/Segger iJet?
>> 
>> The Samtec FTR-110-03-G-D-06 does not have the correct spacing or pin-out.
>> The two rows have the correct pin-to-pin spacing but the two rows are too far
>> apart (.05inX.05in pitch)
>> The IAR interface has the following pinout:
>> 1 VTref   2 SWDIO/TMS
>> 3 GND   4 SWCLK/TCK
>> 5 GND   6 SWO/TDO
>> 7 N/C 8 TDI
>> 9 GNC  10 nRESET
>> 11 TgtPwr 12 N/C
>> 13 TgtPwr 14 N/C
>> 15 GND 16 N/C
>> 17 GND 18 N/C
>> 19 GND 20 N/C
>> 
>> Thanks in advance for any help!!!
> -- 
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[beagleboard] Re: BBB JTAG for iJet (IAR/Segger)

[gkilley]

John,
If everyone used the same JTAG it would make things too easy!!!

I'm using IAR EWARM.
Making an adapter board isn't hard so I guess that's what I'll do. I'll 
just grad a small pad-per-hole proto board and hotwire it together.

Thanks again for the help!
Grant


On Thursday, March 20, 2014 8:31:26 PM UTC-6, gki...@gmail.com wrote:
>
> Does anyone know of a JTAG adapter for the BBB that will connect to the 
> IAR/Segger iJet?
>
> The Samtec FTR-110-03-G-D-06 does not have the correct spacing or pin-out.
> The two rows have the correct pin-to-pin spacing but the two rows are too 
> far apart (.05inX.05in pitch)
> The IAR interface has the following pinout:
> 1 VTref   2 SWDIO/TMS
> 3 GND   4 SWCLK/TCK
> 5 GND   6 SWO/TDO
> 7 N/C 8 TDI
> 9 GNC  10 nRESET
> 11 TgtPwr 12 N/C
> 13 TgtPwr 14 N/C
> 15 GND 16 N/C
> 17 GND 18 N/C
> 19 GND 20 N/C
>
> Thanks in advance for any help!!!
>

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Re: [beagleboard] Re: BBB JTAG for iJet (IAR/Segger)

[John Syn]

From:  
Reply-To:  
Date:  Friday, March 21, 2014 at 2:46 AM
To:  
Subject:  [beagleboard] Re: BBB JTAG for iJet (IAR/Segger)

> 
> Thanks John., but that doesn't have the correct pin-out and is too big
Sorry about that, I should have paid more attention to the pinout.
FTR-110-03-G-D-06 is the correct part number for the BBB as I have these
mounted on my BBB. I don¹t understand why every JTAG vendor has to have a
different pin layout. I have several JTAG emulators and each requires an
adapter for BBB. I¹m not aware of any adapter that will match the IAR JTAG
to the BBB JTAG. You may have to make your own. If you know how to design a
PCB, you could use these guys to make a PCB for $29:

http://www.protoexpress.com/content/noTouch.jsp


What software are you planning to use with the IAR emulator?

Regards,
John
> 
> 
> -- 
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[beagleboard] Trouble enabling i2c-2 in mainline uBoot for BeagleBone Black

[Joshua Datko]

I am trying to enable the i2c-2 bus in mainline uBoot and having problems. 
 I am building a cape that has a Trusted Platform Module (TPM) on pins 
P9_19/20, i2c-2.  Using some creative wiring, when I connect the cape to 
i2c-1, everything works fine.

I added this in /board/ti/am225x/mux.c:

static struct module_pin_mux i2c2_pin_mux[] = {
{OFFSET(uart1_ctsn), (MODE(3) | RXACTIVE |
   PULLUDEN | SLEWCTRL)}, /* I2C_DATA */
{OFFSET(uart1_rtsn), (MODE(3) | RXACTIVE |
PULLUDEN | SLEWCTRL)}, /* I2C_SCLK */
{-1},
};

In enable_board_pin_mux, I put the following before any of the ifs:

configure_module_pin_mux(i2c2_pin_mux);

and added a puts after to ensure it was getting hit.

When I break in uboot and try to switch to i2c-2, the BBB resets as follows:

U-Boot# i2c dev 2
Setting bus to 2
data abort
pc : [<9f7745c4>]  lr : [<9f7745bc>]
sp : 9f637dc0  ip :  fp : 9f638598
r10: 9f7a7680  r9 : 9f637f28 r8 : 000186a0
r7 : 0001  r6 : 9f7a47d4 r5 : 000186a0  r4 : 0001
r3 : 002c  r2 : 0001 r1 : 0002  r0 : 4819c000
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32
Resetting CPU ...

I'm not quite sure where to go from here.  It appears, to me, that uBoot 
has an issue with i2c-2 and any help would be appreciated.  I *could* 
switch the TPM over to i2c-1 but I'd rather not change the hardware unless 
using i2c-2 is impossible for some reason in uBoot.

I have a rev B BeagleBone Black BTW.

Josh

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Re: [beagleboard] CPU speed and kernel builds

[Dennis Cote]

On Friday, March 21, 2014 8:32:48 AM UTC-6, RobertCNelson wrote:
>
> voodoo@am335x-boneblack-512mb-0:~$ cpufreq-info 
> cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 
> Report errors and bugs to cpu...@vger.kernel.org , please. 
> analyzing CPU 0: 
>   driver: generic_cpu0 
>   CPUs which run at the same hardware frequency: 0 
>   CPUs which need to have their frequency coordinated by software: 0 
>   maximum transition latency: 300 us. 
>   hardware limits: 300 MHz - 1000 MHz 
>   available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz 
>   available cpufreq governors: conservative, ondemand, userspace, 
> powersave, performance 
>   current policy: frequency should be within 300 MHz and 1000 MHz. 
>   The governor "ondemand" may decide which speed to use 
>   within this range. 
>   current CPU frequency is 300 MHz. 
>   cpufreq stats: 300 MHz:43.76%, 600 MHz:0.00%, 800 MHz:0.57%, 1000 
> MHz:55.67%  (6) 
>
>
Robert,

When using your Debian beta image, I always get 300 MHz as the current CPU 
frequency for the cpufreq-info command, both at idle and under load. I also 
get nan% for all the entries on the cpufreq stats line at the end. I see 
that you are getting real percentages there. 

As I noted earlier, I believe the speed is changing and cpufreq-info -w 
shows the correct values when idle and under load, 300 MHz and 1000 MHz.

Any idea why I am seeing these strange values, in particular the nan% 
values?

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Re: [beagleboard] Re: Hello World Program GSOC 2014

[Robert Nelson]

On Fri, Mar 21, 2014 at 5:13 PM, Dennis Cote  wrote:
> On Friday, March 21, 2014 12:43:11 PM UTC-6, Florin Maticu wrote:
>>
>> Hello World program for GSOC 2014.
>> Project: Debugging tools for LINUX INDUSTRIAL I/O SUBSYSTEM
>
>
> What is this? I know that GSOC is google summer of code, but what is this
> helloworld.bin file? Why is it posted here? What does it do? Who might want
> it? How do you install and run this if you wanted to use it?
>
> Many questions, little information.

It's a requirement of the beagleboard.org GSOC, the user just used the
wrong mailing list.

Regards,

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

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[beagleboard] Re: Hello World Program GSOC 2014

[Dennis Cote]

On Friday, March 21, 2014 12:43:11 PM UTC-6, Florin Maticu wrote:
>
> Hello World program for GSOC 2014.
> Project: Debugging tools for LINUX INDUSTRIAL I/O SUBSYSTEM 
>

What is this? I know that GSOC is google summer of code, but what is this 
helloworld.bin file? Why is it posted here? What does it do? Who might want 
it? How do you install and run this if you wanted to use it?

Many questions, little information.



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Re: [beagleboard] CPU speed and kernel builds

[cwrseckford]

On Friday, March 21, 2014 2:32:48 PM UTC, RobertCNelson wrote:
> 
> 2:32 PM (6 hours ago)
> On Fri, Mar 21, 2014 at 9:24 AM,   wrote:
> > Okay, I'm officially confused.  I've been trying to increase the speed
> > of my BBB from the default 550MHz to 1GHz, and failing; this is with the
> > elderly 3.8.13-37 sources.  After a few failures I went back to a 
seriously
> > ancient kernel, just to get something to run, and found that the
> > 3.8.13-bone22
> > sources boot and run at 1GHz using the performance governor with no
> > problems.
> >
> > I then found that there are a set of patches for _3.12_ on a Fedora 
mailing
> > list which add cpu speed setting, which implies that 3.8 can't set the
> > speed.
> > Can anyone resolve that conundrum?

... snippage ...

I got USB working in 3.14.0-rc7 by turning on most of the CONFIG_USB
stuff, but I hit a wall trying to configure the cpu frequency.  In 3.8.x
at least the files under /sys/devices/system/cpu/cpu0/cpufreq are present
and correct, but with (apparently) the same flags in 3.14 there's no sign
of any cpufreq stuff, or of any governors.  I can even build and load a
governor module, and the /sys directory won't see it and the cpufreq tools
won't find it.

I did my USB trick and turned on every likely cpufreq flag with no change,
so it's something pretty obscure in the config (I doubt it's an actual bug).
Anyone any ideas?  After the last three days I'm fresh out.

> > I then tried building 3.14, since that's the most recent set of fixes
> > (btw am335x-pm-firmware.bin is missing from the 3.14 kernel package)
>
> That actually does not matter, as it does not work outside ti's v3.12.x 
anyways.

However, the 3.14.0-rc7 build fails without it.

>
> > and found that it couldn't boot from the USB; it simply hung trying
> > to access /dev/sda.  It couldn't handle my standard NFS boot either.
> >

This was a config problem, and I bodged a solution, see above.
However, the 3.14.0 cpufreq stuff still won't fly.

Will

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[beagleboard] Why the SPI1 is not referenced in any dts file that describes the beaglebone board device tree?

[Ventura]

I didn't find in the files for am335x-bone* any reference to the spi1, only 
for the spi0.
The file am33xx.dtsi does reference but I would like to understand why in 
the dts files that describes the beaglebone board there is no reference to 
spi1.

My guess: considering the pins are multiplexed, they decided to reference 
other parts of hardware (ex. mmc) instead of the second SPI1.

Sincerely,
Ventura

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Re: [beagleboard] Re: How Flashing Now Works with Debian

[Louis Thiery]

Cool - I don't think I've ever played with such structured scripts before!

I've gotten up to the board specific script and I get the following:
Valid EEPROM header found
sed: can't read /etc/default/udhcpd: No such file or directory
cat: /etc/udhcpd.conf: No such file or directory
/opt/scripts/boot/am335x_evm.sh: line 85: /etc/udhcpd.conf: Read-only file 
system
/opt/scripts/boot/am335x_evm.sh: line 86: /etc/udhcpd.conf: Read-only file 
system
/opt/scripts/boot/am335x_evm.sh: line 87: /etc/udhcpd.conf: Read-only file 
system
/opt/scripts/boot/am335x_evm.sh: line 88: /etc/udhcpd.conf: Read-only file 
system
/opt/scripts/boot/am335x_evm.sh: line 89: /etc/udhcpd.conf: Read-only file 
system
/opt/scripts/boot/am335x_evm.sh: line 91: /etc/init.d/udhcpd: No such file 
or directory
SIOCSIFADDR: No such device
usb0: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device
/opt/scripts/boot/am335x_evm.sh: line 94: /usr/sbin/udhcpd: No such file or 
directory
Device "usb0" does not exist.
Device "wlan0" does not exist.
sed: couldn't open temporary file /etc/sedXOJqCd: Read-only file system
/opt/scripts/boot/am335x_evm.sh: line 103: /etc/issue: Read-only file system

It seems that the main issue is that the partition that I'm running is 
read-only... I don't know when I set it as such and chmod'ing the whole 
thing didn't seem to resolve.

I guess I'll built my distro over again and try to find out at which point 
I made it "read-only"

On Friday, March 21, 2014 3:26:11 PM UTC-4, RobertCNelson wrote:
>
> On Fri, Mar 21, 2014 at 2:22 PM, Louis Thiery 
> > 
> wrote: 
> > Just to see if it would "just work", I tried to run the script from my 
> > distribution and the scrip is unhappy: 
> > 
> > /bin/bash /opt/scripts/beaglebone-black-eMMC-flasher.sh 
> > Error: script halting, system unrecognized... 
>
> The "script" assumes a few things, so i have a couple quick system 
> checks, that make it stop if it doesn't recognize the system.. 
>
> Regards, 
>
> -- 
> Robert Nelson 
> http://www.rcn-ee.com/ 
>

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Re: [beagleboard] HDMI to VGA, on boot the board displays its logo, but then ceases to display anything. Please Help

[Gerald Coley]

I would start here on the support Wiki..
http://www.elinux.org/Beagleboard:BeagleBone_Black_Accessories#HDMI_Adapters

Now, if the EDID information is not passed over this cable, the Linux
cannot figure out the resolution to send. So, check and see if the EDID
information is getting there.

http://www.elinux.org/Beagleboard:BeagleBoneBlack_HDMI#EDID_Information


Gerald



On Fri, Mar 21, 2014 at 3:20 PM, Sam McDermott <
davidsamuelmcderm...@gmail.com> wrote:

> I recently got my beaglebone black, and thought that it would be a great
> way to replace my old computer with something small that has equal power.
>  I also wanted to reuse the old VGA monitor from the computer, so I got a
> micro HDMI to VGA cable.  I plugged it into the monitor and it seemed to
> work for a few seconds while the board booted, but then after the logo
> disappeared I got a fuzzy screen and a no signal message.  I have two
> questions.  First, what is going wrong, clearly all of the parts work?  And
> second, How can I fix it or would it be best to abandon ship?  Link to
> video on YouTube: http://youtu.be/ICbChuMQ9u8
>
> --
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[beagleboard] HDMI to VGA, on boot the board displays its logo, but then ceases to display anything. Please Help

[Sam McDermott]

I recently got my beaglebone black, and thought that it would be a great 
way to replace my old computer with something small that has equal power. 
 I also wanted to reuse the old VGA monitor from the computer, so I got a 
micro HDMI to VGA cable.  I plugged it into the monitor and it seemed to 
work for a few seconds while the board booted, but then after the logo 
disappeared I got a fuzzy screen and a no signal message.  I have two 
questions.  First, what is going wrong, clearly all of the parts work?  And 
second, How can I fix it or would it be best to abandon ship?  Link to 
video on YouTube: http://youtu.be/ICbChuMQ9u8

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[beagleboard] Re: chipsee beaglebone lcd/dvi expansion kernel support

[Jaymes Berkly]

Forgot this one too 
wiki.ti

On Friday, March 21, 2014 3:21:05 PM UTC-4, Jaymes Berkly wrote:
>
> These should be of help elinux  and 
> eewiki 
> On Friday, March 21, 2014 11:44:54 AM UTC-4, kieuvi...@gmail.com wrote:
>>
>> Hi all
>>>
>>
>> I have a BBB board and a BBB Expansion and I want to build Linux for it. 
>> Not prebuild image. Can you show me kernel Linux and tutorial for this?
>>
>

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Re: [beagleboard] Re: How Flashing Now Works with Debian

[Robert Nelson]

On Fri, Mar 21, 2014 at 2:22 PM, Louis Thiery  wrote:
> Just to see if it would "just work", I tried to run the script from my
> distribution and the scrip is unhappy:
>
> /bin/bash /opt/scripts/beaglebone-black-eMMC-flasher.sh
> Error: script halting, system unrecognized...

The "script" assumes a few things, so i have a couple quick system
checks, that make it stop if it doesn't recognize the system..

Regards,

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

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[beagleboard] Re: How Flashing Now Works with Debian

[Louis Thiery]

Oops - just saw your reply. Will study what you describe

On Friday, March 21, 2014 3:22:15 PM UTC-4, Louis Thiery wrote:
>
> Just to see if it would "just work", I tried to run the script from my 
> distribution and the scrip is unhappy:
>
> /bin/bash /opt/scripts/beaglebone-black-eMMC-flasher.sh
> Error: script halting, system unrecognized...
>
>
>
> On Friday, March 21, 2014 1:51:55 PM UTC-4, Louis Thiery wrote:
>>
>> Hello,
>>
>> I'm trying to leverage the flashing process included in the new Debian 
>> images to move my own distribution over but I'm confused on the current 
>> mechanics.
>>
>> I did find this page: http://elinux.org/Beagleboard:Updating_The_Software
>>
>> but perhaps that explains how flashing used to work with Angstrom? I 
>> wasn't able to see the same architecture happening over on the new Debian 
>> images which works in 15 minutes instead of 45 minutes.
>>
>> I did find */opt/scripts/tools/beaglebone-black-eMMC-flasher.sh *but I'm 
>> not particularly sure of the mechanics. 
>>
>> It seems to me that when the boot button is pressed, the BBB mounts and 
>> boots from the eMMC-flasher partition. Somehow this script is executed (I 
>> couldn't find the relevant systemd process) and it copies over everything 
>> on that same partition over to the eMMC and then powers off. 
>>
>> Next time, I boot from the eMMC, how does the script knows to not 
>> execute, seeing as it can't really copy the eMMC to the eMMC... How does 
>> all this work?
>>
>> Thanks,
>> Louis
>>
>

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Re: [beagleboard] Power supply induced failure?

[Gerald Coley]

Any part on the board can be removed and replaced. Whether it fixes the
issue or not, depends on whether it was the part that has failed. You
cannot bypass the power chip. It supplies all the voltages for
the circuitry on the board, none of which runs on 5V but
other voltages instead as generated by the power chip. USB limits by
definition the current consumption to 500mA maximum.

Gerald





On Fri, Mar 21, 2014 at 2:04 PM, Steve Swartz wrote:

> At some point my BBB developed the problem that the power supply LED no
> longer turns on. This happened while trying to get the HDMI interface
> working. When powered just through the USB cable the board still seams to
> boot and work correctly, I have still never managed to get the HDMI or even
> the Ethernet working correctly.  I'm assuming the power controller chip
> must have gotten fried. Is this a "repairable" problem? Can I bypass the
> power chip some how and get more power onto the board then the USB port
> alone will deliver?  Should I just be happy I didn't wreck the whole board?
> There does seem to be a bit more to powering this board and an HDMI monitor
> and sucking power out of the USB safely then is immediately obvious. Thanks.
>
>  P.S.  I wouldn't even bother with the monitor if there were a simple,
> cheap solution to getting audio.
>
> --
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[beagleboard] Re: How Flashing Now Works with Debian

[Louis Thiery]

Just to see if it would "just work", I tried to run the script from my 
distribution and the scrip is unhappy:

/bin/bash /opt/scripts/beaglebone-black-eMMC-flasher.sh
Error: script halting, system unrecognized...



On Friday, March 21, 2014 1:51:55 PM UTC-4, Louis Thiery wrote:
>
> Hello,
>
> I'm trying to leverage the flashing process included in the new Debian 
> images to move my own distribution over but I'm confused on the current 
> mechanics.
>
> I did find this page: http://elinux.org/Beagleboard:Updating_The_Software
>
> but perhaps that explains how flashing used to work with Angstrom? I 
> wasn't able to see the same architecture happening over on the new Debian 
> images which works in 15 minutes instead of 45 minutes.
>
> I did find */opt/scripts/tools/beaglebone-black-eMMC-flasher.sh *but I'm 
> not particularly sure of the mechanics. 
>
> It seems to me that when the boot button is pressed, the BBB mounts and 
> boots from the eMMC-flasher partition. Somehow this script is executed (I 
> couldn't find the relevant systemd process) and it copies over everything 
> on that same partition over to the eMMC and then powers off. 
>
> Next time, I boot from the eMMC, how does the script knows to not execute, 
> seeing as it can't really copy the eMMC to the eMMC... How does all this 
> work?
>
> Thanks,
> Louis
>

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[beagleboard] Re: chipsee beaglebone lcd/dvi expansion kernel support

[Jaymes Berkly]

These should be of help elinux  and 
eewiki 
On Friday, March 21, 2014 11:44:54 AM UTC-4, kieuvi...@gmail.com wrote:
>
> Hi all
>>
>
> I have a BBB board and a BBB Expansion and I want to build Linux for it. 
> Not prebuild image. Can you show me kernel Linux and tutorial for this?
>

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[beagleboard] Power supply induced failure?

[Steve Swartz]

At some point my BBB developed the problem that the power supply LED no 
longer turns on. This happened while trying to get the HDMI interface 
working. When powered just through the USB cable the board still seams to 
boot and work correctly, I have still never managed to get the HDMI or even 
the Ethernet working correctly.  I'm assuming the power controller chip 
must have gotten fried. Is this a "repairable" problem? Can I bypass the 
power chip some how and get more power onto the board then the USB port 
alone will deliver?  Should I just be happy I didn't wreck the whole board? 
There does seem to be a bit more to powering this board and an HDMI monitor 
and sucking power out of the USB safely then is immediately obvious. Thanks.

 P.S.  I wouldn't even bother with the monitor if there were a simple, 
cheap solution to getting audio.

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Re: [beagleboard] How Flashing Now Works with Debian

[Robert Nelson]

On Fri, Mar 21, 2014 at 12:51 PM, Louis Thiery  wrote:
> Hello,
>
> I'm trying to leverage the flashing process included in the new Debian
> images to move my own distribution over but I'm confused on the current
> mechanics.
>
> I did find this page: http://elinux.org/Beagleboard:Updating_The_Software
>
> but perhaps that explains how flashing used to work with Angstrom? I wasn't
> able to see the same architecture happening over on the new Debian images
> which works in 15 minutes instead of 45 minutes.

yeah, totally different.  Angstrom extracted a tar.gz into the new
eMMC.  Whereas i'm just using rsync to sync microSD -> eMMC.

>
> I did find /opt/scripts/tools/beaglebone-black-eMMC-flasher.sh but I'm not
> particularly sure of the mechanics.
>
> It seems to me that when the boot button is pressed, the BBB mounts and
> boots from the eMMC-flasher partition. Somehow this script is executed (I
> couldn't find the relevant systemd process) and it copies over everything on
> that same partition over to the eMMC and then powers off.

It's actually a classic init script.  systemd runs it just fine.

You can view it here:
https://github.com/beagleboard/image-builder/blob/master/target/init_scripts/generic-debian.sh

It's stored here: /etc/init.d/boot_scripts.sh

This script takes care of a few generic tasks, setting the clock,
regenerating ssh keys, before calling a board specific script.
(referenced from /boot/uboot/SOC.sh)

This is the board specific script:

https://github.com/RobertCNelson/boot-scripts/blob/master/boot/am335x_evm.sh

It's stored here: /opt/scripts/boot/am335x_evm.sh

It takes care of flashing blank eeprom, getting the mac address,
setting up the gadget drivers, enablng the local dhcp server, calling
the flasher.sh script, and finishing the microSD resize when needed.

> Next time, I boot from the eMMC, how does the script knows to not execute,
> seeing as it can't really copy the eMMC to the eMMC... How does all this
> work?

That depends:

If the flasher "microSD" is still installed, it WILL flash the eMMC "again"..

If you re-add the "trigger" file:

https://github.com/RobertCNelson/boot-scripts/blob/master/boot/am335x_evm.sh#L110

It will attempt the flash the "other" media..

If you look closely, the flasher script doesn't care if it's microSD
or eMMC, it's designed to flash the "other" media:

https://github.com/RobertCNelson/boot-scripts/blob/master/tools/beaglebone-black-eMMC-flasher.sh#L39

Regards,

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

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[beagleboard] Re: chipsee beaglebone lcd/dvi expansion kernel support

[Jaymes Berkly]

>
> This works well, though it doesn't seem to work for the ubuntu image. 
> Working on seeing if booting from eMMC is possible. The eMMC is disabled in 
> the am335x-bbb-exp.dts. After adding the following code below to enable the 
> eMMC worked but the LCD stopped working too.

 

bone_capemgr {

compatible = "ti,bone-capemgr";

status = "okay";

eeprom = <0xc>;


> baseboardmaps {


> board@0 {

board-name = "A335BONE";

compatible-name = "ti,beaglebone";

linux,phandle = <0x4b>;

phandle = <0x4b>;

};


> board@1 {

board-name = "A335BNLT";

compatible-name = "ti,beaglebone-black";

linux,phandle = <0x4c>;

phandle = <0x4c>;

};

};


> slots {

slot@100 {

ti,cape-override;

priority = <0x1>;

compatible = "ti,beaglebone-black";

board-name = "Bone-LT-eMMC-2G";

version = "00A0";

manufacturer = "Texas Instruments";

part-number = "BB-BONE-EMMC-2G";

};

};


> capemaps {


> cape@1 {

part-number = "BB-BONE-EMMC-2G";


> version@00A0 {

version = "00A0";

dtbo = "cape-bone-2g-emmc1.dtbo";

};

};

};

};


On Tuesday, March 18, 2014 5:07:53 PM UTC-4, Kevin Nguyen wrote:
>
> This isn't the "right" way to do it but it will work.
>
> 1. Download the Debian Wheezy 7.2 img from and install it on an SD Card 
> using the instructions on the site.
> http://www.armhf.com/index.php/boards/beaglebone-black/
>
> 2. Download the pre-built Angstrom image from Chipsee
> http://www.4shared.com/rar/8lKQ5nSBba/prebuilt-angstrom-bbb-exp-2014.html
>
> 3. Extract the pre-built Angstrom image somewhere.
>
> 4. Copy the 'boot' folder from the Angstrom image to the SD Card and 
> replace any duplicate files.
>
> 5. Plug in the SD Card and boot up.
>
> Note: I haven't verified but if you follow these instructions I don't 
> think you can flash to the eMMC unless you edit the uEnv.txt
> On Sunday, March 16, 2014 8:50:33 AM UTC-4, Patrick Horvath wrote:
>>
>> Has anyone an image for the capacitive 7" LCD version with debian wheezy?
>>
>

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[beagleboard] Re: Encouragement for the disencouraged

[Piotr Murawski]

Sometimes, we joke that the whole "free" stuff in IT was created be the 
evil programmers. Kind of the virtual "doctor no", to make the world 
depended on our knowledge, experience, services and ... bring us lot of 
money.  Yes it works!
There is more and more Linux everywhere. In my domain - STBs is almost 99% 
penetration (excluding Microsoft (actually Ericsson now) MediaRoom), 
millions of dollars spend on making it work, customizing, porting, writing 
drivers.

You get free drugs sample, then you will keep paying till the end.  I like 
this model. I have to spend many ours to fix two drivers I had to use in my 
BBB project, I've shared results with the audience of this forum, but 
experience I've gained will stay with me. 


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[beagleboard] Re: chipsee beaglebone lcd/dvi expansion kernel support

[Jaymes Berkly]

>
> This works well, though it doesn't seem to work for the ubuntu image. 
> Working on seeing if booting from eMMC is possible. The eMMC is disabled in 
> the am335x-bbb-exp.dts. After adding the following code below to enable the 
> eMMC worked but the LCD stopped working too.

```scala

> bone_capemgr {

compatible = "ti,bone-capemgr";

status = "okay";

eeprom = <0xc>;


> baseboardmaps {


> board@0 {

board-name = "A335BONE";

compatible-name = "ti,beaglebone";

linux,phandle = <0x4b>;

phandle = <0x4b>;

};


> board@1 {

board-name = "A335BNLT";

compatible-name = "ti,beaglebone-black";

linux,phandle = <0x4c>;

phandle = <0x4c>;

};

};


> slots {

slot@100 {

ti,cape-override;

priority = <0x1>;

compatible = "ti,beaglebone-black";

board-name = "Bone-LT-eMMC-2G";

version = "00A0";

manufacturer = "Texas Instruments";

part-number = "BB-BONE-EMMC-2G";

};

};


> capemaps {


> cape@1 {

part-number = "BB-BONE-EMMC-2G";


> version@00A0 {

version = "00A0";

dtbo = "cape-bone-2g-emmc1.dtbo";

};

};

};

};

``` 

 
On Tuesday, March 18, 2014 5:07:53 PM UTC-4, Kevin Nguyen wrote:
>
> This isn't the "right" way to do it but it will work.
>
> 1. Download the Debian Wheezy 7.2 img from and install it on an SD Card 
> using the instructions on the site.
> http://www.armhf.com/index.php/boards/beaglebone-black/
>
> 2. Download the pre-built Angstrom image from Chipsee
> http://www.4shared.com/rar/8lKQ5nSBba/prebuilt-angstrom-bbb-exp-2014.html
>
> 3. Extract the pre-built Angstrom image somewhere.
>
> 4. Copy the 'boot' folder from the Angstrom image to the SD Card and 
> replace any duplicate files.
>
> 5. Plug in the SD Card and boot up.
>
> Note: I haven't verified but if you follow these instructions I don't 
> think you can flash to the eMMC unless you edit the uEnv.txt
> On Sunday, March 16, 2014 8:50:33 AM UTC-4, Patrick Horvath wrote:
>>
>> Has anyone an image for the capacitive 7" LCD version with debian wheezy?
>>
>

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[beagleboard] How Flashing Now Works with Debian

[Louis Thiery]

Hello,

I'm trying to leverage the flashing process included in the new Debian 
images to move my own distribution over but I'm confused on the current 
mechanics.

I did find this page: http://elinux.org/Beagleboard:Updating_The_Software

but perhaps that explains how flashing used to work with Angstrom? I wasn't 
able to see the same architecture happening over on the new Debian images 
which works in 15 minutes instead of 45 minutes.

I did find */opt/scripts/tools/beaglebone-black-eMMC-flasher.sh *but I'm 
not particularly sure of the mechanics. 

It seems to me that when the boot button is pressed, the BBB mounts and 
boots from the eMMC-flasher partition. Somehow this script is executed (I 
couldn't find the relevant systemd process) and it copies over everything 
on that same partition over to the eMMC and then powers off. 

Next time, I boot from the eMMC, how does the script knows to not execute, 
seeing as it can't really copy the eMMC to the eMMC... How does all this 
work?

Thanks,
Louis

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Re: [beagleboard] Re: CPU speed and kernel builds

[Gerald Coley]

We test the boards at the factory at 1GHz on USB and DC prior to shipping.
The issue there is if you have a SD card, then that can exceed the 500mA
when it is being hit hard.

Default is the governor is active and it runs at 300MHz so unless you give
it something meaningful to do, it sits at 300MHz. Load it up, and it goes
to 1GHz.

Gerald


On Fri, Mar 21, 2014 at 12:37 PM, William Hermans  wrote:

> That would be false, but ive heard teh same stories.
>
> I run my own BBB from USB, and at idle it runs at 300Mhz, then once under
> a load of 66% or greater it will swing up to 1Ghz. ondemand governor I do
> believe.
>
>
> On Fri, Mar 21, 2014 at 10:34 AM, Scott Force wrote:
>
>> How are you powering your BBB?
>> I've heard that if you power it via USB instead of the 5V DC connector,
>> that the CPU speed will be reduced due to the lower power.
>>
>>
>> On 21 March 2014 10:38, Dennis Cote  wrote:
>>
>>> On Friday, March 21, 2014 8:24:50 AM UTC-6, cwrse...@gmail.com wrote:

 Okay, I'm officially confused.  I've been trying to increase the speed
 of my BBB from the default 550MHz to 1GHz, and failing;

>>>
>>>  How are you measuring the CPU frequency?
>>>
>>> I have noticed that cpufreq-info gives different answers depending upon
>>> the arguments. With no arguments mine always returns 300 MHz when running
>>> with the 300 1000 ondemand governor. If I use the "cpufreq-info -f" command
>>> I get the same results, always 300 MHz, both at idle and under load. If I
>>> use the "sudo cpufreq-info -w" command, I get 300 MHz at idle and 1000 MHz
>>> under load. The -w option reads the frequency from the hardware and
>>> requires root privledges.
>>>
>>> HTH
>>> Dennis Cote
>>>
>>> --
>>> For more options, visit http://beagleboard.org/discuss
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>>
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Re: [beagleboard] Re: CPU speed and kernel builds

[William Hermans]

That would be false, but ive heard teh same stories.

I run my own BBB from USB, and at idle it runs at 300Mhz, then once under a
load of 66% or greater it will swing up to 1Ghz. ondemand governor I do
believe.


On Fri, Mar 21, 2014 at 10:34 AM, Scott Force wrote:

> How are you powering your BBB?
> I've heard that if you power it via USB instead of the 5V DC connector,
> that the CPU speed will be reduced due to the lower power.
>
>
> On 21 March 2014 10:38, Dennis Cote  wrote:
>
>> On Friday, March 21, 2014 8:24:50 AM UTC-6, cwrse...@gmail.com wrote:
>>>
>>> Okay, I'm officially confused.  I've been trying to increase the speed
>>> of my BBB from the default 550MHz to 1GHz, and failing;
>>>
>>
>>  How are you measuring the CPU frequency?
>>
>> I have noticed that cpufreq-info gives different answers depending upon
>> the arguments. With no arguments mine always returns 300 MHz when running
>> with the 300 1000 ondemand governor. If I use the "cpufreq-info -f" command
>> I get the same results, always 300 MHz, both at idle and under load. If I
>> use the "sudo cpufreq-info -w" command, I get 300 MHz at idle and 1000 MHz
>> under load. The -w option reads the frequency from the hardware and
>> requires root privledges.
>>
>> HTH
>> Dennis Cote
>>
>> --
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>> ---
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>
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Re: [beagleboard] Re: CPU speed and kernel builds

[Gerald Coley]

That only applies to the BeagleBone White.

Gerald



On Fri, Mar 21, 2014 at 12:34 PM, Scott Force wrote:

> How are you powering your BBB?
> I've heard that if you power it via USB instead of the 5V DC connector,
> that the CPU speed will be reduced due to the lower power.
>
>
> On 21 March 2014 10:38, Dennis Cote  wrote:
>
>> On Friday, March 21, 2014 8:24:50 AM UTC-6, cwrse...@gmail.com wrote:
>>>
>>> Okay, I'm officially confused.  I've been trying to increase the speed
>>> of my BBB from the default 550MHz to 1GHz, and failing;
>>>
>>
>>  How are you measuring the CPU frequency?
>>
>> I have noticed that cpufreq-info gives different answers depending upon
>> the arguments. With no arguments mine always returns 300 MHz when running
>> with the 300 1000 ondemand governor. If I use the "cpufreq-info -f" command
>> I get the same results, always 300 MHz, both at idle and under load. If I
>> use the "sudo cpufreq-info -w" command, I get 300 MHz at idle and 1000 MHz
>> under load. The -w option reads the frequency from the hardware and
>> requires root privledges.
>>
>> HTH
>> Dennis Cote
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
>> ---
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>
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Re: [beagleboard] Re: CPU speed and kernel builds

[Scott Force]

How are you powering your BBB?
I've heard that if you power it via USB instead of the 5V DC connector,
that the CPU speed will be reduced due to the lower power.


On 21 March 2014 10:38, Dennis Cote  wrote:

> On Friday, March 21, 2014 8:24:50 AM UTC-6, cwrse...@gmail.com wrote:
>>
>> Okay, I'm officially confused.  I've been trying to increase the speed
>> of my BBB from the default 550MHz to 1GHz, and failing;
>>
>
>  How are you measuring the CPU frequency?
>
> I have noticed that cpufreq-info gives different answers depending upon
> the arguments. With no arguments mine always returns 300 MHz when running
> with the 300 1000 ondemand governor. If I use the "cpufreq-info -f" command
> I get the same results, always 300 MHz, both at idle and under load. If I
> use the "sudo cpufreq-info -w" command, I get 300 MHz at idle and 1000 MHz
> under load. The -w option reads the frequency from the hardware and
> requires root privledges.
>
> HTH
> Dennis Cote
>
> --
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Re: [beagleboard] Kernel/device tree road-map for the BBB

[David Lambert]

Robert,
It appears that the GPIO label numbering scheme has been changed 
from the device tree overlay's "1 to n+1", to the more con-formant  0 to 
n;  I fell into this trap :-[ . I will send you my consolidated patch 
directly, once I had time to check it out further.


Sorry for the confusion. Regards,

Dave.


On 03/20/2014 12:33 PM, David Lambert wrote:

Robert,
It looks like I spoke too soon. Although my device tree appears to 
get loaded and my driver entry point is called with correct 
parameters, the pinmux does not appear to get set up correctly. Where 
do I look in 3.13 kernel based systems to debug the pinmux settings?


Best regards,

Dave.


On 03/06/2014 03:11 PM, Robert Nelson wrote:

On Thu, Mar 6, 2014 at 3:03 PM, David Lambert  wrote:
Just a suggestion. If the dtb for the cape does not exist or is 
corrupted,
could the device tree default to the base, for example 
am335x-boneblack.dtb?

You read my mind, there is a new file test function, i'd like to
backport to v2014.01

http://git.denx.de/?p=u-boot.git;a=commit;h=e5e897c01b1cd496187ca56a38ff5559d27f951c 



Then yes, we can set it to use the default *.dtb.

Regards,





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[beagleboard] Re: BBB No video over HDMI

[Scott Force]

I was having a similar issue which I finally figured out last night.  For 
me the TV & Angstrom were both indicating that there was no connection what 
so ever. This didn't make sense, as I had made sure to purchase one of the 
known good HDMI cables from the WIKI page 
(http://elinux.org/Beagleboard:BeagleBone_Black_Accessories#Working_HDMI_Cables).

As it turns, I get video out when I removed the BBB from it's case. 
Apparently the Adafruit Clear Top Case 
(http://www.adafruit.com/products/1555) & the Monoprice cable 
(http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10253&cs_id=1025301&p_id=7557&seq=1&format=2)
 
from the WIKI don't play nicely together. The cable seems like it is in all 
the way but is just tiny bit shy.

Now I just have to decide which component I am replacing.  

Scott


On Sunday, 5 May 2013 09:12:27 UTC-4, Chuck Wuthrich wrote:
>
> Hi - I have set up the BBB on Windows and it appears to be running 
> correctly. I can browse the files and open up the browser to interact. I'm 
> not getting any video when I plug it into my HDTV though. I have it hooked 
> up using a 5v power supply, a micro HDMI cable, and a USB hub with keyboard 
> and mouse. The USR LEDs are blinking like something is going on but I get 
> no video. The TV is a Sharp 1080p LCD TV.
>
> What am I doing wrong?
>

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[beagleboard] Re: chipsee beaglebone lcd/dvi expansion kernel support

[kieuvietdich]

>
> Hi all
>

I have a BBB board and a BBB Expansion and I want to build Linux for it. 
Not prebuild image. Can you show me kernel Linux and tutorial for this?

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[beagleboard] Re: BBB and element 14 BB-View cape

[gonda . miso]

I am on the same path as you but still not figure out how to get it up and 
running. I will try during the weekend. Did you figure out how to manage 
this cape?

Michal

On Friday, January 24, 2014 12:34:44 AM UTC+1, dlhes...@gmail.com wrote:
>
> I have just got the BB-view cape with an 7inch lcd but can't get the thing 
> working, I have tried flashing the TI images froom element 14 and the 
> angstrom image but neither seam to work. Have I wasted my money? I am 
> currently using a A5A BBB, I have ordered another BBB which I think may be 
> an A6 just to see if it's my BBB.
>
> Does anyone have any experience of the BB-View or can point me in the 
> right direction?
>

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

[Charles Steinkuehler]

Like the DMA controller, the PRUSS operates as a bus controller and
connects to the crosspoint switch fabric that interconnects the various
subsystems on the SoC.  Details are provided in the Technical Reference
Manual, section 10 (Interconnects), including charts of which masters
can communicate with which slaves.

On 3/21/2014 9:59 AM, Giuseppe Iellamo wrote:
> 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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char...@steinkuehler.net

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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] Re: CPU speed and kernel builds

[Dennis Cote]

On Friday, March 21, 2014 8:24:50 AM UTC-6, cwrse...@gmail.com wrote:
>
> Okay, I'm officially confused.  I've been trying to increase the speed
> of my BBB from the default 550MHz to 1GHz, and failing; 
>

 How are you measuring the CPU frequency?

I have noticed that cpufreq-info gives different answers depending upon the 
arguments. With no arguments mine always returns 300 MHz when running with 
the 300 1000 ondemand governor. If I use the "cpufreq-info -f" command I 
get the same results, always 300 MHz, both at idle and under load. If I use 
the "sudo cpufreq-info -w" command, I get 300 MHz at idle and 1000 MHz 
under load. The -w option reads the frequency from the hardware and 
requires root privledges.

HTH
Dennis Cote

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Re: [beagleboard] CPU speed and kernel builds

[Robert Nelson]

On Fri, Mar 21, 2014 at 9:24 AM,   wrote:
> Okay, I'm officially confused.  I've been trying to increase the speed
> of my BBB from the default 550MHz to 1GHz, and failing; this is with the
> elderly 3.8.13-37 sources.  After a few failures I went back to a seriously
> ancient kernel, just to get something to run, and found that the
> 3.8.13-bone22
> sources boot and run at 1GHz using the performance governor with no
> problems.
>
> I then found that there are a set of patches for _3.12_ on a Fedora mailing
> list which add cpu speed setting, which implies that 3.8 can't set the
> speed.
> Can anyone resolve that conundrum?

voodoo@am335x-boneblack-512mb-0:~$ uname -a
Linux am335x-boneblack-512mb-0 3.13.6-bone7 #1 SMP Fri Mar 7 21:37:01
UTC 2014 armv7l GNU/Linux

voodoo@am335x-boneblack-512mb-0:~$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpuf...@vger.kernel.org, please.
analyzing CPU 0:
  driver: generic_cpu0
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 300 us.
  hardware limits: 300 MHz - 1000 MHz
  available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz
  available cpufreq governors: conservative, ondemand, userspace,
powersave, performance
  current policy: frequency should be within 300 MHz and 1000 MHz.
  The governor "ondemand" may decide which speed to use
  within this range.
  current CPU frequency is 300 MHz.
  cpufreq stats: 300 MHz:43.76%, 600 MHz:0.00%, 800 MHz:0.57%, 1000
MHz:55.67%  (6)


> I then tried building 3.14, since that's the most recent set of fixes
> (btw am335x-pm-firmware.bin is missing from the 3.14 kernel package)

That actually does not matter, as it does not work outside ti's v3.12.x anyways.

> and found that it couldn't boot from the USB; it simply hung trying
> to access /dev/sda.  It couldn't handle my standard NFS boot either.
>
> Most of the kernel problems have to be configuration issues, but after a
> couple of days of checking I can't find anything missing from the USB/SCSI
> setup. So does anyone have a kernel config file for 3.14, which enables
> most of the peripherals?

I actually haven't tried that in awhile, might have broke something.
(usb rootfs)

Regards,

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

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

[Charles Steinkuehler]

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
> 
> 


-- 
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char...@steinkuehler.net

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[beagleboard] CPU speed and kernel builds

[cwrseckford]

Okay, I'm officially confused.  I've been trying to increase the speed
of my BBB from the default 550MHz to 1GHz, and failing; this is with the
elderly 3.8.13-37 sources.  After a few failures I went back to a seriously
ancient kernel, just to get something to run, and found that the 
3.8.13-bone22
sources boot and run at 1GHz using the performance governor with no 
problems.

I then found that there are a set of patches for _3.12_ on a Fedora mailing
list which add cpu speed setting, which implies that 3.8 can't set the 
speed.
Can anyone resolve that conundrum?

I then tried building 3.14, since that's the most recent set of fixes
(btw am335x-pm-firmware.bin is missing from the 3.14 kernel package)
and found that it couldn't boot from the USB; it simply hung trying
to access /dev/sda.  It couldn't handle my standard NFS boot either.

Most of the kernel problems have to be configuration issues, but after a
couple of days of checking I can't find anything missing from the USB/SCSI
setup. So does anyone have a kernel config file for 3.14, which enables
most of the peripherals?

(These are all Robert Nelson's kernels, using his standard build method.)

Thanks for any ideas - Will

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[beagleboard] Re: Can't connect to beaglebone.local with BBB

[Mike Borden]

Do you have zeroconf installed? Give this page a look:

http://www.woofpuppy.com/2012/05/solving-local-dns-resolution-problems.html

My Windows installation already had Bonjour installed, so it was able to 
reach *.local addresses, but I think I might have had to install avahi on 
my Ubuntu laptop. 

On Thursday, March 20, 2014 8:20:20 PM UTC-4, Yanlong Mu wrote:
>
> I am really sorry I just forget to mention my system, I use Ubuntu 12.04 
> LTS.
>
> But I JUST use the Windows system it works, But I still confused why it 
> didn't worked on the Ubuntu 12.04?!  :
>
> On Friday, March 21, 2014 12:05:11 AM UTC, Yanlong Mu wrote:
>>
>>
>> Dear Everyone
>>
>> I just got serious problem with my BBB. I just have it and am going to 
>> get start with it through the way as beagleboard.org/getting start. but 
>> when I use the local ip address (192.168.7.2) it showed as below:
>>
>>
>> 
>>
>> and I check the internet connection with router and USB cable, its 
>> working well. I think the normally picture as shown as above should be like 
>> this:
>>
>>
>> 
>>
>> I do not know the reason, please help me! :(
>>
>> Thank you very much
>>
>> Kind Regards
>>
>> Ian
>>
>>
>>
>>
>>

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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] Is BBB I2S Capable out of the box for VOIP Applications? (SIM interface)

[André Prado]

Thanks Gerald.


On Fri, Mar 21, 2014 at 10:59 AM, Gerald Coley wrote:

> It is connected to the HDMI framer for the purpose of creating audio via
> an HDMI monitor. You an disable it, access it via the expansion headers and
> use the Audio cape that was mentioned earlier.
>
> There is only 1 I2S interface available for use.
>
> Gerald
>
>
>
> On Fri, Mar 21, 2014 at 8:53 AM, André Prado wrote:
>
>> i read http://www.ti.com/product/am3358 and it says that this processor
>> can have up to 2 I2S channels, then i went to the bbb wiki page
>> http://elinux.org/Beagleboard:BeagleBoneBlack .
>>
>> And it says nothing about how many i2s pins are accessible via GPIO or
>> how i can configure them. Could you give me a direction please?
>>
>>
>> On Thu, Mar 20, 2014 at 3:31 PM, André Prado wrote:
>>
>>> Hello Maxim,
>>>
>>> I dont need the analog audio. As far as i understood this cape is to
>>> convert BBB i2s to analogic audio (mic/speaker). I need BBB I2S <> GSM SIM
>>> I2S.
>>> Am i right?
>>>
>>> Cheers
>>>
>>>
>>>
>>> On Thu, Mar 20, 2014 at 3:28 PM, Maxim Podbereznyy 
>>> wrote:
>>>
 will the Audio-Cape fit your application?
 http://elinux.org/CircuitCo:Audio_Cape_RevB



 2014-03-20 22:14 GMT+04:00 André Prado :

>  Hello, i have a BBB and i've played with it mostly for Qt
> Applications (HMI).
> Now i want to use it in my home as a VOIP gateway, i saw that there is
> an asterisk port ( http://www.beaglebone-asterisk.org/ ) that seems
> to be pretty cool.
>
> For this i need to interface my SIM (I2S) with the BBB, is there an
> I2S GPIO and drivers for it available? I've saw some projects but they all
> use the chan_dongle or something like this.
>
> Thanks
>
> --
> Atenciosamente/Regards
> André Castelan Prado
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
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 --
 LinkedIn - http://www.linkedin.com/in/maximpodbereznyy
 Company - http://www.linkedin.com/company/mentorel
 Facebook - https://www.facebook.com/mentorel.company

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>>>
>>>
>>>
>>> --
>>> Atenciosamente/Regards
>>> André Castelan Prado
>>>
>>
>>
>>
>> --
>> Atenciosamente/Regards
>> André Castelan Prado
>>
>> --
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>
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-- 
Atenciosamente/Regards
André Castelan Prado

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Re: [beagleboard] Is BBB I2S Capable out of the box for VOIP Applications? (SIM interface)

[Gerald Coley]

It is connected to the HDMI framer for the purpose of creating audio via an
HDMI monitor. You an disable it, access it via the expansion headers and
use the Audio cape that was mentioned earlier.

There is only 1 I2S interface available for use.

Gerald



On Fri, Mar 21, 2014 at 8:53 AM, André Prado  wrote:

> i read http://www.ti.com/product/am3358 and it says that this processor
> can have up to 2 I2S channels, then i went to the bbb wiki page
> http://elinux.org/Beagleboard:BeagleBoneBlack .
>
> And it says nothing about how many i2s pins are accessible via GPIO or how
> i can configure them. Could you give me a direction please?
>
>
> On Thu, Mar 20, 2014 at 3:31 PM, André Prado wrote:
>
>> Hello Maxim,
>>
>> I dont need the analog audio. As far as i understood this cape is to
>> convert BBB i2s to analogic audio (mic/speaker). I need BBB I2S <> GSM SIM
>> I2S.
>> Am i right?
>>
>> Cheers
>>
>>
>>
>> On Thu, Mar 20, 2014 at 3:28 PM, Maxim Podbereznyy wrote:
>>
>>> will the Audio-Cape fit your application?
>>> http://elinux.org/CircuitCo:Audio_Cape_RevB
>>>
>>>
>>>
>>> 2014-03-20 22:14 GMT+04:00 André Prado :
>>>
  Hello, i have a BBB and i've played with it mostly for Qt
 Applications (HMI).
 Now i want to use it in my home as a VOIP gateway, i saw that there is
 an asterisk port ( http://www.beaglebone-asterisk.org/ ) that seems to
 be pretty cool.

 For this i need to interface my SIM (I2S) with the BBB, is there an I2S
 GPIO and drivers for it available? I've saw some projects but they all use
 the chan_dongle or something like this.

 Thanks

 --
 Atenciosamente/Regards
 André Castelan Prado

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>>>
>>>
>>>
>>> --
>>> LinkedIn - http://www.linkedin.com/in/maximpodbereznyy
>>> Company - http://www.linkedin.com/company/mentorel
>>> Facebook - https://www.facebook.com/mentorel.company
>>>
>>> --
>>> For more options, visit http://beagleboard.org/discuss
>>> ---
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>>>
>>
>>
>>
>> --
>> Atenciosamente/Regards
>> André Castelan Prado
>>
>
>
>
> --
> Atenciosamente/Regards
> André Castelan Prado
>
> --
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Re: [beagleboard] Is BBB I2S Capable out of the box for VOIP Applications? (SIM interface)

[André Prado]

 i read http://www.ti.com/product/am3358 and it says that this processor
can have up to 2 I2S channels, then i went to the bbb wiki page
http://elinux.org/Beagleboard:BeagleBoneBlack .

And it says nothing about how many i2s pins are accessible via GPIO or how
i can configure them. Could you give me a direction please?


On Thu, Mar 20, 2014 at 3:31 PM, André Prado  wrote:

> Hello Maxim,
>
> I dont need the analog audio. As far as i understood this cape is to
> convert BBB i2s to analogic audio (mic/speaker). I need BBB I2S <> GSM SIM
> I2S.
> Am i right?
>
> Cheers
>
>
>
> On Thu, Mar 20, 2014 at 3:28 PM, Maxim Podbereznyy wrote:
>
>> will the Audio-Cape fit your application?
>> http://elinux.org/CircuitCo:Audio_Cape_RevB
>>
>>
>>
>> 2014-03-20 22:14 GMT+04:00 André Prado :
>>
>>>  Hello, i have a BBB and i've played with it mostly for Qt Applications
>>> (HMI).
>>> Now i want to use it in my home as a VOIP gateway, i saw that there is
>>> an asterisk port ( http://www.beaglebone-asterisk.org/ ) that seems to
>>> be pretty cool.
>>>
>>> For this i need to interface my SIM (I2S) with the BBB, is there an I2S
>>> GPIO and drivers for it available? I've saw some projects but they all use
>>> the chan_dongle or something like this.
>>>
>>> Thanks
>>>
>>> --
>>> Atenciosamente/Regards
>>> André Castelan Prado
>>>
>>> --
>>> For more options, visit http://beagleboard.org/discuss
>>> ---
>>> You received this message because you are subscribed to the Google
>>> Groups "BeagleBoard" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to beagleboard+unsubscr...@googlegroups.com.
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>>>
>>
>>
>>
>> --
>> LinkedIn - http://www.linkedin.com/in/maximpodbereznyy
>> Company - http://www.linkedin.com/company/mentorel
>> Facebook - https://www.facebook.com/mentorel.company
>>
>> --
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>>
>
>
>
> --
> Atenciosamente/Regards
> André Castelan Prado
>



-- 
Atenciosamente/Regards
André Castelan Prado

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[beagleboard] am335x: configure tca6416 interrupt

[Yegor Yefremov]

I've an am335x-based board with tca6416. OS: Linux with kernel 3.14. The 
interrupt output of the
tca6416 is connected to GPIO0_20 on my SoC. How should I configure this
wiring in a device tree file?

I've already managed to hook it on I2C and it is working so far:

 tca6416: gpio@20 {
compatible = "ti,tca6416";
reg = <0x20>;
gpio-controller;
#gpio-cells = <2>;
  };

Documentation/devicetree/bindings/gpio/gpio-pcf857x.txt describes
following properties:

  - interrupt-controller: Identifies the node as an interrupt controller.
  - #interrupt-cells: Number of cells to encode an interrupt source, shall 
be 2.
  - interrupt-parent: phandle of the parent interrupt controller.
  - interrupts: Interrupt specifier for the controllers interrupt.

and following example:

pcf8575: gpio@20 {
compatible = "nxp,pcf8575";
reg = <0x20>;
interrupt-parent = <&irqpin2>;
interrupts = <3 0>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
};

Where does irqpin2 come from? How to specify GPIO0_20 in "interrupts" 
context?

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[beagleboard] how to connect printer with bbb without using GUI Display

[Chintan Kapadia]

Hello

I am using beaglebone black for command line printing through a console.
for HP printer I installed HPLIP and CUPS.
 
But in linux there was attached HP printer then automatically ask to 
install other suitable online installation. but in BBB I am not use any 
HDMI GUI display..!
then how to solve it without using GUI only with command line.


Thank you.

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Re: [beagleboard] switching distribution

[elena . valhalla]

On 2014-03-20 at 18:58:10 -0700, William Hermans wrote:
> Yes, Ubuntu is based on Debian. One major difference is that Ubuntu uses
> Upstart for its System-V init daemon. Where as Debian starting with Jessie
> is / was supposed to use Systemd.

*will* use Systemd: if you install debian jessie today it will use 
the old sysvinit, but you can install either systemd (which will become 
the default in the near future) or upstart as you whish.

Shuttleworth's post wasn't very explicit, but it is also quite likely 
that Ubuntu will migrate to systemd in some future release.

-- 
Elena ``of Valhalla''

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

[Satz Klauer]

On Wed, Mar 19, 2014 at 6:38 AM, Andrew Frazer
 wrote:
> http://www.seeedstudio.com/depot/BeagleBone-Black-Embest-p-1736.html

They're not the only one. There are several companies offering BBBs on
alibaba.com - for a price in range $60..$80, also in high volumes and
short term availability. The availability is real there, I know from a
company that has ordered - and received - larger amounts from such a
Chinese company.

So they seem to make good business with this shortage.

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[beagleboard] BB-ADC analog input update

[Jorgen]

I have enabled the analog inputs on a Beaglebone Black by adding BB-ADC to 
optargs in uEnv.txt:

optargs=capemgr.disable_partno=BB-BONELT-HDMI 
capemgr.enable_partno=BB-SPIDEV0,BB-SPIDEV1,BB-UART1,BB-ADC


The basic analog input works, if I do a:

cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw

it returns a value which is proportional to the applied voltage.

However the value is not always up-to-date. If I change the input voltage, 
I can read the old input voltage several times before I can read the 
correct value. The strange part is that I am obviously not just reading a 
stored value, because the LSB can change on subsequent reads, until I 
finally read the correct value:

jsa@bb00:~$ cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw
489

The applied voltage is now halved (from ~200mV to ~100mV). I wait for about 
1 second between each read:

jsa@bb00:~$ cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw
489
jsa@bb00:~$ cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw
488
jsa@bb00:~$ cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw
489
jsa@bb00:~$ cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw
489
jsa@bb00:~$ cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw
489
jsa@bb00:~$ cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw
488
jsa@bb00:~$ cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw
489
jsa@bb00:~$ cat /sys/bus/iio/devices/iio:device0/in_voltage3_raw
243

Finally I read the correct value. What is going on? Can I force an update 
(sample)?

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Re: [beagleboard] Encouragement for the disencouraged

[Thorsten Gonschior]

@Sid:
agreed, but its not the technology that frightens me, its the creepy stuff 
that some people provide which you have to use for (commercial) live or 
death. In general you are absolutely right, its good to know what you dont 
know or at least to have a glimpse of that.
I like the 1ppm failure posters in the development departements of 
automotive companies. Yea, you probably have to dream of something :D

the baggage thing is ok in a way but its always good to keep experiences in 
mind especially when it comes to trusting in something ;) what I never do. 
as I said I am not a believer 







Am Freitag, 21. März 2014 00:31:21 UTC+1 schrieb Sid Boyce:
>
>  On 20/03/14 22:05, Thorsten Gonschior wrote:
>  
> Hi to you all out there, new to the BBB, new to Linux, new to whatever?
>
> This is no request for a particular solution but somehow a thought to 
> whats wrong with me, ... or some of the others?
>
> Never worked with Linux or Unix, never did anything else than windows and 
> TI embedded stuff. I would think of me as a professional senior engineer 
> for embedded systems, automotive and industrial control.
>
> Now, I entered the embedded Linux world and I am thrilled and frustrated 
> at the same time. Before some days system and software engineering was 
> somehow deterministic to me, something you plan and do. yea, welcome to 
> waynes world.
>
> After reading some hundred hours in the internet, peeking through about 12 
> new books I bought like hands on the beagle bone black for hyperdummies 
> down to realtime driver development in subatomicmicrokernels I am almost as 
> clueless as before. almost ;) 
> After trying to do some really complex stuff like hello world on a php web 
> page I am beginning to understand that I have to let go some very basic 
> principles of thinking like an engineer if I want to act in and survive 
> this new scene.
>
> My first impression on the BBB was somehow, oh wow now I can do everything 
> I always wanted for free. Today I am more on the way of thinking what I 
> could do if noone or nothing unavoidably unseen screws me up, kicks me in 
> the back and stabs me with a fork in my ass (in my sleep).
>
>
> After this esotheric discourse for all you out there finding yourself here 
> I will come to the encouragement thing I promised.
> You cannot make it run? its not there? dont know where, why, how or when?
>
> Its there and it is quite simple and so much more complex you will ever 
> imagine. Know what? give a damn, go get it and make it any way you can.
>
> Newbie/Noob Rule 1: there is no correct way, there ist never only one way, 
> and what ever way you find out, if ever, its the wrong one anyway.
> Newbie/Noob Rule 2: dont do it on your own. its already there. dont even 
> start thinking how you can solve a subtask. just go and get your component 
> out of the internet. talking caipirinha serving robots doing your laundry, 
> just call for it. it will never be a 100% solution. be happy if it works 
> just good enough, more or less. On the other hand, if you do it on your 
> own, how perfect would you think you would do it, after endless doing your 
> stuff . There is just nothing you can do on your own against the 10.000 
> man years of productive work you buy with your cellphone ;) 
> Newbie/Noob Rule 3: dont believe in all the creeps out there. my 
> impression is that there are seemingly 50 people out there not talking 
> crap. they are easy to find.
> Newbie/Noob Rule 4: if you are confronted with the fishermans feed fish 
> and net crap, skip the page, its not with it.
> Newbie/Noob Rule 5: I dont know how, but all the people out there managed 
> to make it somehow. even if you have no Idea what you are doing, in the end 
> it works. you dont know why, or for how long, but it does. thanks and 
> regards to all of you out there contributing to this vast community. With 
> the stuff you do and how you do it, you would not have survived in any kind 
> of industrial working environment. On the other hand this so professional 
> industrial working environment is just loosing the edge against you. And 
> that feels great :D
>
>
> In direct words to the BBB and my experiences of the first days:
> after two days of stumbling around to understand how to get ubuntu on my 
> BBB I was able to set up my SD Card and power up the ubuntu. Just early 
> enough to undertsand that Angstrom ist not half as bad as everybody tries 
> to state. Now I am back to angstrom and I like it (today).
> After endless discussions from guys who tried to provide the perfect way 
> of setting up a so much better web server and endless attempts from me to 
> make those explanations work, I found out that the BBB comes with a 
> webserver and to enable stuff like php its just a two lines command. it 
> works fine to me (today).
> After reading horrific stories of how not to find a working FTP server 
> solution for the not usable and totally crappy Angstrom distribution, I 
> found 

[beagleboard] Re: Encouragement for the disencouraged

[Thorsten Gonschior]

:D thanks for the advice
I dont think of me as a converted one, because I am not a believer. 
Probably just get hands on stuff thats up the day it comes and sometimes it 
inspires me ...
Yea I do use Linux on my PC, caged in a VM ;)



Am Freitag, 21. März 2014 00:23:28 UTC+1 schrieb bris...@yahoo.com.au:
>
> So does that mean we've converted you to Linux? Going to try using it on 
> your pc? 
>
>

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[beagleboard] Re: BBB JTAG for iJet (IAR/Segger)

[gkilley]

Thanks John., but that doesn't have the correct pin-out and is too big

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Re: [beagleboard] switching distribution

[Robert Kuhn]

Gerald:

If something is missing, you can ask an maybe it can get added.
>

Set CONFIG_DRM_LOAD_EDID_FIRMWARE to yes in the kernel config would be 
great.

Robert
 

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Re: [beagleboard] Re: Audio Cape Rev B schematics ?

[John Syn]

From:  David Anders 
Reply-To:  
Date:  Thursday, March 20, 2014 at 8:56 PM
To:  
Subject:  Re: [beagleboard] Re: Audio Cape Rev B schematics ?

> 
> we are trying to get them into the production line now, however we are
> spending 98% of our production time right now on producing beaglebone black
> boards
> 
> once stock is back solid we'll put them into the production line...
Thanks Dave,

BTW, have you finalized the DTS file for this board?

Regards,
John

> 
> 
> Dave
> 
> On Thursday, March 20, 2014 5:51:56 PM UTC-5, john3909 wrote:
>> 
>> 
>> From:  David Anders  >
>> Reply-To:   >
>> Date:  Friday, February 21, 2014 at 1:18 PM
>> To:   >
>> Subject:  Re: [beagleboard] Re: Audio Cape Rev B schematics ?
>> 
>>> yes but it won't be posted until we are ready to ship...
>> Hi Dave,
>> 
>> When are you shipping this product?
>> 
>> Regards,
>> John
>>> 
>>> 
>>> Dave
>>> 
>>> 
>>> On Friday, February 21, 2014 2:04:28 PM UTC-6, john3909 wrote:
 
 
 From:  David Anders 
 Reply-To:  
 Date:  Friday, February 21, 2014 at 8:18 AM
 To:  
 Subject:  [beagleboard] Re: Audio Cape Rev B schematics ?
 
> Valentin,
> 
> the audio cape revb is in production now and should be available for
> purchase within 14 to 21 days.
> 
> the design files for the audio cape revb are available on the wiki page:
> http://www.elinux.org/CircuitCo:Audio_Cape_RevB#Documentations
 Do you have a device tree overlay for this board?
> 
> 
> On Wednesday, February 19, 2014 4:01:21 AM UTC-6, Valentin Le bescond
> wrote:
>> Hello everyone !
>> 
>> First question for me on this group... big day...
>> 
>> I am looking for BeagleBone audio cape Rev B schematics (announced @
>> elinux.com  ). Does anyone know who I might ask for it
>> ?
>> 
>> In other words, I have been waiting for a month an a half to be able to
>> buy a audio cape (in France) an so far every "where to buy" is out of
>> stock.
>> 
>> But anyway I wanted to make a custom audio cape based on the available
>> one.
>> 
>> I looked at the schematics (Rev A) and saw there was a lot of DVI things
>> in it. Then I saw a yet-to-come Rev B with what seems to be a much
>> cleaner PCB (audio only ?). Plus it has a AIC3104 (instead of the 3106)
>> which adds selectable bias voltage !
>> 
>> So : nowhere to buy + available schematics (I hope) = let's build it !
>> 
>> Does anyone have any info that could help me getting started ?
>> 
>> Regards,
> 
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>>> 
>>> -- 
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Re: [beagleboard] BBB JTAG for iJet (IAR/Segger)

[John Syn]

From:  
Reply-To:  
Date:  Thursday, March 20, 2014 at 7:31 PM
To:  
Subject:  [beagleboard] BBB JTAG for iJet (IAR/Segger)

> Does anyone know of a JTAG adapter for the BBB that will connect to the
> IAR/Segger iJet?
> 
> The Samtec FTR-110-03-G-D-06 does not have the correct spacing or pin-out.
> The two rows have the correct pin-to-pin spacing but the two rows are too far
> apart (.05inX.05in pitch)
> The IAR interface has the following pinout:
> 1 VTref   2 SWDIO/TMS
> 3 GND   4 SWCLK/TCK
> 5 GND   6 SWO/TDO
> 7 N/C 8 TDI
> 9 GNC  10 nRESET
> 11 TgtPwr 12 N/C
> 13 TgtPwr 14 N/C
> 15 GND 16 N/C
> 17 GND 18 N/C
> 19 GND 20 N/C
> 
> Thanks in advance for any help!!!
You need an ARM 20Pin JTAG to Compact TI 20Pin JTAG (cTI). Look at
TinCanTools -ARM20cTI20 - cTI 20-pin JTAG Adapter Board.

Regards,
John
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[beagleboard] Predefined compiler macros that ...

[Richard-tx]

I am porting a piece of software to the BBB.  To make my life easy, I would 
like to know if there is some predefined compiler macros that would 
identify the compilation platform which in this case is a Beaglebone Black.

I know that __arm__ is defined but that isn't good enough.  I am porting 
from the Raspberry Pi

I would love to see something like __beaglebone__ or similar defined.

Any ideas?


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[beagleboard] phpize

[Nucleus]

Hello,

First off, a little about my BBB software version:

uname -a:
Linux beaglebone 3.8.13 #1 SMP Wed Sep 4 09:09:32 CEST 2013 armv7l GNU/Linux

lsb_release -a:
Distributor ID: Angstrom
Description:Angstrom GNU/Linux v2012.12 (Core edition)
Release:v2012.12
Codename:   Core edition

In my opkg base.conf:
src/gz base http:
//feeds.angstrom-distribution.org/feeds/v2012.12/ipk/eglibc/armv7a-vfp-neon/base

In order to get access to "phpize." I need to install the php development 
tools, so when I try to install the ipk for "php-dev," (located at 
http://feeds.angstrom-distribution.org/feeds/v2012.12/ipk/eglibc/armv7a-vfp-neon/base/php-dev_5.3.19-r4.0.2_armv7a-vfp-neon.ipk),
 
I get the following error:
root@beaglebone:~# opkg install php-dev
Installing php-dev (5.3.19-r4.0.2) to root...
Downloading http:
//feeds.angstrom-distribution.org/feeds/v2012.12/ipk/eglibc/armv7a-vfp-neon/base/php-dev_5.3.19-r4.0.2_armv7a-vfp-neon.ipk.
php-dev: unsatisfied recommendation for libssl-dev
php-dev: unsatisfied recommendation for mysql5-dev
php-dev: unsatisfied recommendation for libcrypto-dev
php-dev: unsatisfied recommendation for sqlite3-dev
Collected errors:
 * satisfy_dependencies_for: Cannot satisfy the following dependencies forphp
-dev:
 *  libc-client (= 2007e-r1.3) *
 * opkg_install_cmd: Cannot install package php-dev.

So, it appears libc-client is needed to install the php development tools. 
I see that in my same base feed, there is libc-client-dev and 
libc-staticdev, but no "libc-client," which php-dev has a dependency for.

Any help would be appreciated... and yes, I am a newbie.

Thanks.

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