from:"janszymanski12345"

Jon,

 Thank you for your valuable input.
I will try it soon and let you know.
The obvious question already is which one will take precedence in loading:
the overlay defined in the kernel or the one handled by the cape manager?

Cheers,

Jan

On Friday, December 5, 2014 5:34:44 AM UTC+11, Jon E wrote:

 Hi Jan, 

 I had another look at this, was able to replicate what you are seeing, 
 and think I know what's going on.. 

 The part-number 'bone_pwm_P8_13' is already included in the kernel 
 build. I'm not really sure of the mechanics, but when doing a build from 
 the git repository, all the .dts files in the /firmware/capes folder get 
 compiled to individual .dtbo files, and from there into object files, 
 and then combined into a single built-in.o file. 

 The end result of this appears to be that putting an overlay file for 
 one of these built-in part-numbers into /lib/firmware doesn't achieve 
 anything, it just doesn't get read (even if you increment the version). 

 Anyway, it's an easy fix - once you know what's going on!! You should 
 just need to change the part-number to something else unique (and the 
 file name to suit), and then the options can be set in your overlay as 
 you'd expect.. 

 Hope this helps, 
 Jon. 


 On 26/11/14 10:11, janszyma...@gmail.com javascript: wrote: 
  Good idea, thanks. I will try it. I think the positive pulse will be so 
  short that it will not be able to move the motor. 
  
  On Wednesday, November 26, 2014 8:29:31 PM UTC+11, Jon E wrote: 
  
  I'm not sure about that. Jan said before that it's only driven high 
  after loading the PWM driver, and the processor datasheet shows ball 
  T10 (P8_13) as driven low during/after reset. 
  
  Jan, not ideal, but to disable the output sooner you could load the 
  overlay through cape manager, and then write 0 to the run parameter 
  immedately afterwards. But I still think the correct approach is to 
  look at the devcetree/driver code and see why those parameters are 
  having no affect.. 
  
  Regards, 
  Jon 



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Re: [beagleboard] Re: how to make pwm_P8_13 low on boot?

Thanks Robert,

Is there a way to overwrite it?
How can I tell which ones are builtin (so I can select another PWM module 
and pin)?

Jan

On Friday, December 5, 2014 8:39:00 AM UTC+11, RobertCNelson wrote:

 On Thu, Dec 4, 2014 at 3:37 PM,  janszyma...@gmail.com javascript: 
 wrote: 
  Jon, 
  
   Thank you for your valuable input. 
  I will try it soon and let you know. 
  The obvious question already is which one will take precedence in 
 loading: 
  the overlay defined in the kernel or the one handled by the cape 
 manager? 

 The one built-in.. 

 Regards, 

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


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Re: [beagleboard] Re: how to make pwm_P8_13 low on boot?

OK, I did the renaming from bone_pwm_P8_13-00A0.*  into 
bone_pwm_test-00A0.* and after reboot I have: 

in slots:
 0: 54:PF--- 
 1: 55:PF--- 
 2: 56:PF--- 
 3: 57:PF--- 
 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
 7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
 8: ff:P-O-L Override Board Name,00A0,Override Manuf,SPI-4SS
 9: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_eqep2b
10: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_pwm_test
11: ff:P-O-L Override Board Name,00A0,Override Manuf,am33xx_pwm

but in  /sys/devices/ocp.3/pwm_test_P8_13.16 I have only:

root@beaglebone:/sys/devices/ocp.3/pwm_test_P8_13.16# ls
modalias  power  subsystem  uevent

My bone_pwm_test-00A0.dts and bone_pwm_test-00A0.dtb0 are in /lib/firmware
Do I need to make any changes to them after all (as the renaming only 
doesn't work)?

Jan




On Friday, 5 December 2014 09:10:53 UTC+11, RobertCNelson wrote:

 On Thu, Dec 4, 2014 at 4:09 PM,  janszyma...@gmail.com javascript: 
 wrote: 
  Thanks Robert, 
  
  Is there a way to overwrite it? 

 Rename your local version.. 

  How can I tell which ones are builtin (so I can select another PWM 
 module 
  and pin)? 

 You can see them here: 

 https://github.com/beagleboard/linux/tree/3.8/firmware/capes 

 Regards, 

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


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Re: [beagleboard] Re: how to make pwm_P8_13 low on boot?

Hi Jon,
Thanks, that works and behaves exactly as I need.
Jan

On Friday, 5 December 2014 10:54:39 UTC+11, Jon E wrote:

 I used roughly the following process; 

 1) grab the original source file  copy to a local version 

 wget 

 https://raw.githubusercontent.com/beagleboard/linux/3.8.13-bone66/firmware/capes/bone_pwm_P8_13-00A0.dts
  

 cp bone_pwm_P8_13-00A0.dts bone_pwm_local-00A0.dts 

 2) change the part-number in your local version of the .dts file 

  part-number = bone_pwm_P8_13; 
 --- 
   part-number = bone_pwm_local_P8_13; 

 3) compile  copy to /lib/firmware 

 dtc -O dtb -o bone_pwm_local-00A0.dtbo -b 0 -@ bone_pwm_local-00A0.dts 

 cp bone_pwm_local-00A0.dtbo /lib/firmware/ 

 4) load the am33xx_pwm overlay, plus your local config for your pin 

 echo am33xx_pwm  /sys/devices/bone_capemgr.*/slots 
 echo bone_pwm_local /sys/devices/bone_capemgr.*/slots 

 Those steps should be enough; 

 root@beaglebone:~# ls /sys/devices/ocp.*/pwm_test_P8_13.*/ 
 driverduty  modaliasperiodpolarity  power  run 
  subsystem  uevent 

 Regards, 
 Jon 


 On 04/12/14 23:21, janszyma...@gmail.com javascript: wrote: 
  OK, I did the renaming from bone_pwm_P8_13-00A0.*  into 
  bone_pwm_test-00A0.* and after reboot I have: 
  
  in slots: 
0: 54:PF--- 
1: 55:PF--- 
2: 56:PF--- 
3: 57:PF--- 
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G 
5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI 
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1 
8: ff:P-O-L Override Board Name,00A0,Override Manuf,SPI-4SS 
9: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_eqep2b 
  10: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_pwm_test 
  11: ff:P-O-L Override Board Name,00A0,Override Manuf,am33xx_pwm 
  
  but in  /sys/devices/ocp.3/pwm_test_P8_13.16 I have only: 
  
  root@beaglebone:/sys/devices/ocp.3/pwm_test_P8_13.16# ls 
  modalias  power  subsystem  uevent 
  
  My bone_pwm_test-00A0.dts and bone_pwm_test-00A0.dtb0 are in 
 /lib/firmware 
  Do I need to make any changes to them after all (as the renaming only 
  doesn't work)? 
  
  Jan 



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Re: [beagleboard] SPI : More CS lines

2014-12-03 Thread janszymanski12345

Have a look at the example here http://www.nagavenkat.adurthi.com/ 
titled  SPI communication: BeagleBone Black( as Master) to 4 Arduinos( as 
Slaves ) http://www.nagavenkat.adurthi.com/?p=479
Hope this will help,
Jan

On Wednesday, December 3, 2014 7:35:38 PM UTC+11, mota...@gmail.com wrote:

 Thank you for your answer Mickae1.

 But I know how to use SPI with device tree overlay (I use it that way for 
 my first lcd). I was wondering if it could be possible to declare a simple 
 GPIO pin (via DTO for example) as a CS one. It would allow me to work with 
 fbtft driver without having to alter it.

 Never mind, I am writing a new driver (called by dto) to emulate more CS 
 pins. I will see if it can work at the required speed.

 Le mardi 2 décembre 2014 16:01:03 UTC+1, Mickae1 a écrit :

 your answer :


 http://hipstercircuits.com/enable-spi-with-device-tree-on-beaglebone-black-copy-paste/

 Enjoy,

 Le Tue Dec 02 2014 at 15:58:53, mota...@gmail.com a écrit :

 Hi,

 I have to connect 2 lcd on a BBB via SPI interfaces (I use fbtft 
 driver). I can only use SPI0 because SPI1 pins are used by I2C for cape 
 eeprom.
 The problem is that SPI0 has only one CS pin. Is it possible to tell the 
 SPI driver to use a GPIO pin as another CS line ?
 Am I forced to write a full driver to emulate CS with a GPIO pin ?

 Thanks in advance for your help.

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[beagleboard] Re: Having problems cloning eMMC

2014-12-02 Thread janszymanski12345

there is another thread here *Duplicate BeagleBone black setup* 
https://groups.google.com/forum/embed/?place=forum/beagleboardshowsearch=trueshowpopout=trueshowtabs=truehideforumtitle=trueparenturl=http%3A%2F%2Fwww.beagleboard.org%2FCommunity%2FForums#%21category-topic/beagleboard/beaglebone-black/hKuAggxij40
 dated 
Nov 28, where you will find a solution to your problem.
Good luck.
Jan

On Wednesday, December 3, 2014 6:32:08 AM UTC+11, br...@forceconstant.com 
wrote:

 I am trying to clone an existing BBB, so my first try is using the scripts 
 on http://elinux.org/BeagleBone_Black_Extracting_eMMC_contents .  So 
 first thing I notice is the .img file created was only 2GB, whereas this is 
 a newer BBB that has 4GB eMMC.  So when I updated script to write the img 
 to new BBB, it no longer boots from eMMC.  i would like to make exact 
 copies including uENV.txt, etc.  Does anyone know why this is not working?

 The read command script is 

 #!/bin/sh
 echo timer  /sys/class/leds/beaglebone\:green\:usr0/trigger 
 dd if=/dev/mmcblk1 of=/mnt/BeagleBoneBlack-eMMC-image-$RANDOM.img bs=10M 
 sync
 echo default-on  /sys/class/leds/beaglebone\:green\:usr0/trigge


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[beagleboard] Re: Duplicate BeagleBone black setup

2014-11-27 Thread janszymanski12345

Graham,

You saved me a lot of time and frustration. Thank you, much appreciate it.
My teacher at uni used to quote Alber Einstein - “If you can't explain it
to a six year old, you don't understand it yourself.”
Your comprehensive instruction is easy and logical.
I am getting a new uSD cards for that exercise and I had a feeling I should
be fine from here.
In a meantime, I have a an SD card console image, that you recommended and
as a surprise it has to SSH on USB.
I put a FTDI cable and I see it is booting and outputs to the serial
console.
Can I easily add the SSH over USB to that image and if yes, how?

Thank again

Jan

On Friday, November 28, 2014 3:13:40 AM UTC+11, Graham wrote:

Jan:

I also had problems restoring and copying a BBB image for the Rev.C (4 GB
eMMC) and
the new larger Debian distributions, particularly if you have added
additional code and
updates to the distribution for your application.

I suspect that the existing instructions/methods assume smaller code and
memory sizes.

I have been successful duplicating a Debian 8 (jessie) that has had
upgrades
and my application code added to it on a Rev.C BBB.

1.) Use a uSD card larger than 4 GB. You will need something larger than
4 GB to
save a 4 GB image using dd. I used 16 GB, but you can not go larger than
32 GB at this time.

2.) Install one of the Debian distributions on the uSD card. I chose
bone-debian-7.7-console-armhf-2014-11-19-2gb.img

3.) If you examine the installation, it is using less than 2 GB of the
card.
Use Gparted to expand the partition size to the full size of the card. In
my case,
16 GB, which gives me room on the card to hold multiple 4 GB .img files.

4.) Plug the uSD card into the BBB for which you want to copy the eMMC and
apply power. The console distribution I chose boots straight onto the uSD
card, without pressing the S2 button. If you use some other distribution,
things may work differently.

5.) Sign in as 'root' and enter
dd if=/dev/mmcblk1 of=/mnt/BeagleBoneBlack-eMMC-image-$RANDOM.img bs=10M

6.) Wait 9 minutes for the command to return to the command line. It takes
about
2 minutes per GB to build the .img file. type sync. The completed file
will be located
at /mnt/ The .img file will be slightly less than 4 GB in size

7.) Shutdown this BBB, and plug the uSD card in the target BBB.

8.) Power up the target BBB and sign in as root, and type on the command
line
dd if=/mnt/BeagleBoneBlack-eMMC-image-NUMBER.img of=/dev/mmcblk1 bs=10M
where NUMBER is the random number of the img that was generated in step
(5).

9.) Wait 9 minutes for the command to return, sync, shutdown, remote uSD
card
and re-power the target. The target should now be a duplicate.

Other thoughts:
You can compress the img file on the BBB by
xz BeagleBoneBlack-eMMC-image-NUMBER.img
BUT it will take 2 Hours on the BBB to compress a 4 GB file, when booted
on an uSD card.
You are much better off moving the file to an external machine to compress
it.

You can do a SSH copy of the img file to an external (Linux) machine via
the Ethernet connection by doing something like:
scp root@192.168.1.200:/mnt/BeagleBoneBlack-eMMC-image-NUMBER.img
/home/your-name/Images/
It will transfer at around 8 MB per second, if the BBB is otherwise idle.

--- Graham

On Wednesday, November 26, 2014 8:19:30 PM UTC-6, janszyma...@gmail.com
wrote:

I was able to save the contents of eMMC as an *.img following this link
http://elinux.org/BeagleBone_Black_Extracting_eMMC_contents
http://www.google.com/url?q=http%3A%2F%2Felinux.org%2FBeagleBone_Black_Extracting_eMMC_contentssa=Dsntz=1usg=AFQjCNGM_Ak68pR603ZNyLkvVfB48DSN2A

,
into 4GB FAT32 uSD card, no button pressing. After that I modified
autorun.sh as per instruction from the same side.
The restore on the same board doesn't hapen, however. Any hints?
Jan

On Sunday, 23 November 2014 01:22:06 UTC+11, rspie...@gmail.com wrote:

Just in case somebody finds it useful:

The duplication has worked now!
I did it according to first stack overflow answer and the reference here:
http://elinux.org/BeagleBone_Black_Extracting_eMMC_contents
http://www.google.com/url?q=http%3A%2F%2Felinux.org%2FBeagleBone_Black_Extracting_eMMC_contentssa=Dsntz=1usg=AFQjCNGM_Ak68pR603ZNyLkvVfB48DSN2A

The preparation of the microSD card can only be done under a Linux
environment - at least I did not manage to prepare it under Windows.
The root file system was now 2GB in size - although the Rev C has 4 GB.
Resizing was done exactly like in

http://blog.asiantuntijakaveri.fi/2014/05/flashing-beaglebone-black-rev-b-2gb.html

What you want to do next is resize root partition to fill entire eMMC,
otherwise you're leaving few hunded megabytes of capacity unused and rev B
internal 2GB eMMC is already a bit on small side for full blown Linux
install. Below steps will of course work for SD card rootfs as well.

# Switch

Re: [beagleboard] Re: how to make pwm_P8_13 low on boot?

2014-11-26 Thread janszymanski12345

Good idea, thanks. I will try it. I think the positive pulse will be so 
short that it will not be able to move the motor.

On Wednesday, November 26, 2014 8:29:31 PM UTC+11, Jon E wrote:

 I'm not sure about that. Jan said before that it's only driven high after 
 loading the PWM driver, and the processor datasheet shows ball T10 
 (P8_13) as driven low during/after reset. 

 Jan, not ideal, but to disable the output sooner you could load the 
 overlay through cape manager, and then write 0 to the run parameter 
 immedately afterwards. But I still think the correct approach is to look 
 at the devcetree/driver code and see why those parameters are having no 
 affect..

 Regards,
 Jon

 On Wednesday, 26 November 2014 03:43:21 UTC, William Hermans wrote:

 IN short, use external hardware or do something cleaver like Peter G, and 
 reverse polarity. *OR* have an external switch that switches the PWM line 
 off, until you tell it to turn on. simples ?



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[beagleboard] Re: Duplicate BeagleBone black setup

2014-11-26 Thread janszymanski12345

Hi,

 I do find it useful, as I have problem to do it myself.
Questions:
1) what is the format of SD card? FAT16 - (can be max 4GB) or FAT32? I am 
using Gparted on VM Ubuntu, what are the flags - I set vboot and lba
2) do you need to hold the S2 button while powering BBB as described  here 
https://stackoverflow.com/questions/17834561/duplicating-identical-beaglebone-black-setups
 

or not as described here 
http://elinux.org/BeagleBone_Black_Extracting_eMMC_contents 
3) is there a sequense you need to copy extracted files into SD card or 
doesn't matter?

So far nothing works for me.
Can you share your way?

Jan


On Sunday, November 23, 2014 1:22:06 AM UTC+11, rspie...@gmail.com wrote:

 Just in case somebody finds it useful:

 The duplication has worked now!
 I did it according to first stack overflow answer and the reference here:
 http://elinux.org/BeagleBone_Black_Extracting_eMMC_contents

 The preparation of the microSD card can only be done under a Linux 
 environment - at least I did not manage to prepare it under Windows.
 The root file system was now 2GB in size - although the Rev C has 4 GB.
 Resizing was done exactly like in

 http://blog.asiantuntijakaveri.fi/2014/05/flashing-beaglebone-black-rev-b-2gb.html

  
 What you want to do next is resize root partition to fill entire eMMC, 
 otherwise you're leaving few hunded megabytes of capacity unused and rev B 
 internal 2GB eMMC is already a bit on small side for full blown Linux 
 install. Below steps will of course work for SD card rootfs as well.

 # Switch to root
 sudo su -

 # Delete and recreate root partition using entire disk
 # internal eMMC is called mmcblk0 now as we don't have any SD cards 
 connected
 fdisk /dev/mmcblk0
 # Delete partition #2 (type d and then 2)
 # Create new partition (type n and hit enter four times to accept 
 defaults)
 # Write changes (type w)

 # Reboot so new partition table gets read
 reboot

 # Login again as root and resize root fs
 resize2fs /dev/mmcblk0p2

  ---

 Works like a charm!


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[beagleboard] Re: Duplicate BeagleBone black setup

2014-11-26 Thread janszymanski12345

I was able to save the contents of eMMC as an *.img following this link 
http://elinux.org/BeagleBone_Black_Extracting_eMMC_contents 
http://www.google.com/url?q=http%3A%2F%2Felinux.org%2FBeagleBone_Black_Extracting_eMMC_contentssa=Dsntz=1usg=AFQjCNGM_Ak68pR603ZNyLkvVfB48DSN2A
 
,
into 4GB FAT32 uSD card, no button pressing. After that I modified 
autorun.sh as per instruction from the same side.
The restore on the same board doesn't hapen, however. Any hints?
Jan

On Sunday, 23 November 2014 01:22:06 UTC+11, rspie...@gmail.com wrote:

 Just in case somebody finds it useful:

 The duplication has worked now!
 I did it according to first stack overflow answer and the reference here:
 http://elinux.org/BeagleBone_Black_Extracting_eMMC_contents 
 http://www.google.com/url?q=http%3A%2F%2Felinux.org%2FBeagleBone_Black_Extracting_eMMC_contentssa=Dsntz=1usg=AFQjCNGM_Ak68pR603ZNyLkvVfB48DSN2A

 The preparation of the microSD card can only be done under a Linux 
 environment - at least I did not manage to prepare it under Windows.
 The root file system was now 2GB in size - although the Rev C has 4 GB.
 Resizing was done exactly like in

 http://blog.asiantuntijakaveri.fi/2014/05/flashing-beaglebone-black-rev-b-2gb.html

  
 What you want to do next is resize root partition to fill entire eMMC, 
 otherwise you're leaving few hunded megabytes of capacity unused and rev B 
 internal 2GB eMMC is already a bit on small side for full blown Linux 
 install. Below steps will of course work for SD card rootfs as well.

 # Switch to root
 sudo su -

 # Delete and recreate root partition using entire disk
 # internal eMMC is called mmcblk0 now as we don't have any SD cards 
 connected
 fdisk /dev/mmcblk0
 # Delete partition #2 (type d and then 2)
 # Create new partition (type n and hit enter four times to accept 
 defaults)
 # Write changes (type w)

 # Reboot so new partition table gets read
 reboot

 # Login again as root and resize root fs
 resize2fs /dev/mmcblk0p2

  ---

 Works like a charm!


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Re: [beagleboard] a question about asking questions

Thanks Jason,

 There is a hardware solution to my problem in a form of a tiny logic 
08 (AND gate). The PWM is connected to one input and an extra ENABLE signal 
from GPIO is connected to another input. On the output the resulting gated 
PWM signal will appear when the ENABLE signal goes high from the 
application.
The solution however is non-elegant and can be avoided if I had a better 
knowledge of the software - in this case a PWM driver and it's interaction 
with a device tree overlay.
The initial values of pins on boot is a thing to be aware of in any system.
Thinking that there are people using PWM on BBB, including the designers of 
PWM capes and they are facing the same issue, there was my hope of finding 
a software solution. And yes, I did a very extensive search beforehand. And 
I am grateful and appreciated for the help received, and if possible I do 
contribute back to community within my limits.

Cheers

Jan


On Tuesday, November 25, 2014 8:28:08 PM UTC+11, Jason Lange wrote:



 On Mon, Nov 24, 2014 at 11:05 PM, janszyma...@gmail.com javascript: 
 wrote:

 Hi,

  I have still unresolved issue (no answer here for how to make pwm_P8_13 
 low on boot? ) and therefore
 trying to figure out if my question is:
 - too easy
 - too difficult
 - not interesting enough
 - other?

 As I see there is generally a number of unanswered questions, would it be 
 possible for the moderator to give an indication in a simple style,
 something like: too easy, google it yourself or whatever, to avoid 
 frustration.

 Jan



 Is there a moderator?  I don't know.

 But for myself, your question is both too difficult (I don't know the 
 answer) and not interesting enough (It isn't a problem that I need to solve 
 for myself).  Everybody here is going to have a different response, so 
 having a moderator decide is probably a bit ham fisted.  I can imagine an 
 external hardware solution because I do circuits, but it'd be more elegant 
 if someone helped you find a proper on-board software solution.  If you 
 find a solution on your own please post it.  If you get desperate enough to 
 start soldering email me and I'll try to help.

 Cheers.




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[beagleboard] Re: how to make pwm_P8_13 low on boot?

 Thanks Peter, 

 I have exercised that option already before posting and somehow it didn't 
work.

Changing the parameters (and recompiling) didn't change the default values, 
so my conclusion is that they might be
 
somehow hard-coded in a kernel driver.
Jan

On Monday, 24 November 2014 09:58:19 UTC+11, janszyma...@gmail.com wrote:

 Hi,

 I'm trying to use pwm on BBB
 Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 armv7l 
 GNU/Linux
 I have modified uEnv.tx
 ...

 cape_enable=capemgr.enable_partno=BB-UART1,SPI-4SS,bone_eqep2b,bone_pwm_P8_13,am33xx_pwm
 ...
 and /etc/default/capemgr
 ...
 # Options to pass to capemgr
 CAPE=SPI-4SS,bone_eqep2b,bone_pwm_P8_13,am33xx_pwm
 ...

 after booting I have correctly in slots
  0: 54:PF--- 
  1: 55:PF--- 
  2: 56:PF--- 
  3: 57:PF--- 
  4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
  5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
  7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
 10: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_pwm_P8_13
 11: ff:P-O-L Override Board Name,00A0,Override Manuf,am33xx_pwm
 12: ff:P-O-L Override Board Name,00A0,Override Manuf,SPI-4SS
 13: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_eqep2b

 and pwm works, but,

 - after power on the logic level on P8_13 is low (as I want it to be)
 - after that (loading dtc overlay) the logic level on P8_13 become high (I 
 dont want it)

 My attempt to modify  /lib/firmware/bone_pwm_P8_13-00A0.dts and then 
 recompiling doesn't effect any of:
 /sys/devices/ocp.3/pwm_test_P8_13.11/ duty, period, polarity, run, 

 As I don't want the motor connected to PWM to run, before the applications 
 takes over the control,
 can anyone help me to achieve it?

 Jan





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Re: [beagleboard] Re: how to make pwm_P8_13 low on boot?

 Thanks Jason,

 There is a hardware solution to my problem in a form of a tiny logic 
08 (AND gate). The PWM is connected to one input and an extra ENABLE signal 
from GPIO is connected to another input. On the output the resulting gated 
PWM signal will appear when the ENABLE signal goes high from the 
application.
The solution however is non-elegant and can be avoided if I had a better 
knowledge of the software - in this case a PWM driver and it's interaction 
with a device tree overlay.

The inverter is not a solution as on boot initial pin value is low and 
after the device tree is loaded it jumps high until the application 
software (controlling pwm) takes over.
I will use it as a temporary solution.

Cheers

Jan


On Wednesday, 26 November 2014 08:45:34 UTC+11, Jason Lange wrote:



 - after power on the logic level on P8_13 is low (as I want it to be)
 - after that (loading dtc overlay) the logic level on P8_13 become high 
 (I dont want it)


 Sorry, I missed this.  The 74HC04 would work if it started high and stayed 
 that way.  Do you need to use an overlay?  Maybe if you modified the 
 initial device tree, perhaps with Roberts system for the 3.14 kernel it 
 would start high and you could flip it.

  

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Re: [beagleboard] Re: how to make pwm_P8_13 low on boot?

thanks, unfortunately didn't work for me.

On Wednesday, 26 November 2014 10:02:27 UTC+11, Peter Gregory wrote:

 I had the same issue driving RBG Leds. 
 They were starting turned on full force since the PWM was driving high on 
 boot. 
 Changing the polarity worked for me. 

 Is it possible the order of overlays is undoing your changes to 
 bone_pwm_P8_13? 
 Instead of: 

 cape_enable=capemgr.enable_partno=BB-UART1,SPI-4SS,bone_eqep2b,bone_pwm_P8_13,am33xx_pwm
  


 Maybe try it with your modifications being the last overlay to load: 

 cape_enable=capemgr.enable_partno=BB-UART1,SPI-4SS,bone_eqep2b,am33xx_pwm,bone_pwm_P8_13
  



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[beagleboard] a question about asking questions

2014-11-24 Thread janszymanski12345

Hi,

 I have still unresolved issue (no answer here for how to make pwm_P8_13 
low on boot? ) and therefore
trying to figure out if my question is:
- too easy
- too difficult
- not interesting enough
- other?

As I see there is generally a number of unanswered questions, would it be 
possible for the moderator to give an indication in a simple style,
something like: too easy, google it yourself or whatever, to avoid 
frustration.

Jan

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[beagleboard] how to make pwm_P8_13 low on boot?

2014-11-23 Thread janszymanski12345

Hi,

I'm trying to use pwm on BBB
Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 armv7l 
GNU/Linux
I have modified uEnv.tx
...
cape_enable=capemgr.enable_partno=BB-UART1,SPI-4SS,bone_eqep2b,bone_pwm_P8_13,am33xx_pwm
...
and /etc/default/capemgr
...
# Options to pass to capemgr
CAPE=SPI-4SS,bone_eqep2b,bone_pwm_P8_13,am33xx_pwm
...

after booting I have correctly in slots
 0: 54:PF--- 
 1: 55:PF--- 
 2: 56:PF--- 
 3: 57:PF--- 
 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
 7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
10: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_pwm_P8_13
11: ff:P-O-L Override Board Name,00A0,Override Manuf,am33xx_pwm
12: ff:P-O-L Override Board Name,00A0,Override Manuf,SPI-4SS
13: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_eqep2b

and pwm works, but,

- after power on the logic level on P8_13 is low (as I want it to be)
- after that (loading dtc overlay) the logic level on P8_13 become high (I 
dont want it)

My attempt to modify  /lib/firmware/bone_pwm_P8_13-00A0.dts and then 
recompiling doesn't effect any of:
/sys/devices/ocp.3/pwm_test_P8_13.11/ duty, period, polarity, run, 

As I don't want the motor connected to PWM to run, before the applications 
takes over the control,
can anyone help me to achieve it?

Jan



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[beagleboard] Re: how to make pwm_P8_13 low on boot?

2014-11-23 Thread janszymanski12345

the values in /sys/devices/ocp.3/pwm_test_P8_13/11 are:
duty 0
period 50
polarity 1
run 1
after the device tree overlay is loaded.
Does anyone know if possible and if yes how to change them (the default 
values)?
The changes to corresponding *.dtbo file doesn't change them.


On Monday, 24 November 2014 09:58:19 UTC+11, janszyma...@gmail.com wrote:

 Hi,

 I'm trying to use pwm on BBB
 Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 armv7l 
 GNU/Linux
 I have modified uEnv.tx
 ...

 cape_enable=capemgr.enable_partno=BB-UART1,SPI-4SS,bone_eqep2b,bone_pwm_P8_13,am33xx_pwm
 ...
 and /etc/default/capemgr
 ...
 # Options to pass to capemgr
 CAPE=SPI-4SS,bone_eqep2b,bone_pwm_P8_13,am33xx_pwm
 ...

 after booting I have correctly in slots
  0: 54:PF--- 
  1: 55:PF--- 
  2: 56:PF--- 
  3: 57:PF--- 
  4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
  5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
  7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
 10: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_pwm_P8_13
 11: ff:P-O-L Override Board Name,00A0,Override Manuf,am33xx_pwm
 12: ff:P-O-L Override Board Name,00A0,Override Manuf,SPI-4SS
 13: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_eqep2b

 and pwm works, but,

 - after power on the logic level on P8_13 is low (as I want it to be)
 - after that (loading dtc overlay) the logic level on P8_13 become high (I 
 dont want it)

 My attempt to modify  /lib/firmware/bone_pwm_P8_13-00A0.dts and then 
 recompiling doesn't effect any of:
 /sys/devices/ocp.3/pwm_test_P8_13.11/ duty, period, polarity, run, 

 As I don't want the motor connected to PWM to run, before the applications 
 takes over the control,
 can anyone help me to achieve it?

 Jan





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[beagleboard] Re: broken sd card reader, need help flashing!!!

2014-11-17 Thread janszymanski12345

https://www.sparkfun.com/products/13004 
Is your time and frustration worth more than a cost of SD card reader?

On Monday, November 17, 2014 3:21:43 AM UTC+11, russel...@gmail.com wrote:

 ok so i have broken pin 3 on my sd card reader on accident and need to 
 flash my bbb to use my replicape. however i cant seem to find any other 
 method to flash a bbb other than using an sd card. this is kind of 
 depressing considering i dont want to scrap the board because it still 
 works i just cant flash it through the normal sd card method. every bit of 
 help would be appreciated. what i really need is a step by step on how to 
 flash my bbb without an sd card. i have access to ubuntu and win7 64 bit 
 pc. im not a complete noob at this but by no means am i an expert so please 
 go easy on me here.


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[beagleboard] Re: Only able to read 0x0 or FF with spidev...

2014-11-12 Thread janszymanski12345

Hi Arthur,

BBB is a very time consuming hobby.
Take it ease, relax, go for a walk and when you return, try:

1) try your project as root 
if no luck follow my (working) path

2) Try to repeat my settings and see if it works for you.
I wasn't able to build the original Linux spidev_test, so...

What I have is:
 
root@beaglebone:~# uname -a
Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 armv7l 
GNU/Linux

Following the instruction from here 
http://www.nagavenkat.adurthi.com/2014/02/spi-communication-beaglebone-black-as-master-to-arduino-as-slave/
 

I created SPI-4SS-00A0.dts and compiled it into SPI-4SS-00A0.dts following 
exactly the instruction

By doing that you should have in /sys/devices/bone_capemgr.9/slots

 0: 54:PF--- 
 1: 55:PF--- 
 2: 56:PF--- 
 3: 57:PF--- 
 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
 8: ff:P-O-L Override Board Name,00A0,Override Manuf,SPI-4SS

To test it I obtained and created files in /opt/test/test2 as attached:
build
SimpleGPIO.cpp - from Derek Molloy 
https://github.com/derekmolloy/beaglebone/blob/master/SimpleGPIO.cpp
SimpleGPIO.h - from Derek Molloy 
https://github.com/derekmolloy/beaglebone/blob/master/SimpleGPIO.h 
test2.cpp - mine main file

unzip attached and compile 

root@beaglebone:/opt/test/test2# ./build
Building test2 - J.Sz.
root@beaglebone:/opt/test/test2#
 
then run (have P9-18 and P9-21 connected as loopback)

root@beaglebone:/opt/test/test2# ./test2
Initialize SS pins for SPI
Initialize SPI
SPI transfer
rx = 30 31 32 33 34 35 36 37
rx = 31 32
rx = 33 34
rx = 35 36
rx = 37 38
rx = 30 31 32 33 34 35 36 37
...

press CTRL-C to terminate or let it run and observe with a scope all SPI0 
signals

Hope this will help

Jan

Sorry, I don't see how to insert a file so:
build is:

#!/bin/bash 
echo Building test2 - J.Sz. 
g++ test2.cpp SimpleGPIO.cpp -o test2

test2.cpp is

//#ifndef SPICOMM_H_
//#define SPICOMM_H_


#include stdint.h
#include unistd.h
#include stdio.h
#include stdlib.h
#include getopt.h
#include fcntl.h
#include sys/ioctl.h
#include linux/types.h
#include linux/spi/spidev.h
#include SimpleGPIO.h
#include iostream
#include string
#include SimpleGPIO.h

using namespace std;

// example functions from 
http://www.nagavenkat.adurthi.com/2014/02/spi-communication-beaglebone-black-as-master-to-arduino-as-slave/

#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))

static void pabort(const char *s)
{
 perror(s);
 abort();
}


//4 SS pins for 4 SPI devices
void init_motor_spi_ss(int gpio1,int gpio2,int gpio3,int gpio4){
//export the pins. I have used then pins described in the table above
 gpio_export(gpio1);
 gpio_export(gpio2);
 gpio_export(gpio3);
 gpio_export(gpio4);

// set them as High. The SS pins should be high when idle(no commuication)

 gpio_set_dir(gpio1, OUTPUT_PIN);
 gpio_set_dir(gpio2, OUTPUT_PIN);
 gpio_set_dir(gpio3, OUTPUT_PIN);
 gpio_set_dir(gpio4, OUTPUT_PIN);

gpio_set_value(gpio1, HIGH);
 gpio_set_value(gpio2, HIGH);
 gpio_set_value(gpio3, HIGH);
 gpio_set_value(gpio4, HIGH);

}

static const char *device = /dev/spidev1.0;  // this is when SPI0 was 
enabled. change it when SPI1 is enabled
static uint8_t mode=0;  //this mode works well for me
static uint8_t bits = 8; //arduino accepts 8 bits at once
//static uint32_t speed = 100; //1MHz speed
static uint32_t speed = 100; //2MHz speed
static uint16_t delay=0;

static void init_spi(void)
{
 int fd;
 int ret = 0;

 fd = open(device, O_RDWR);
 if (fd  0)
 pabort(can't open device);

/*
 * spi mode
 */
 ret = ioctl(fd, SPI_IOC_WR_MODE, mode);
 if (ret == -1)
 pabort(can't set spi mode);
ret = ioctl(fd, SPI_IOC_RD_MODE, mode);
 if (ret == -1)
 pabort(can't get spi mode);

/*
 * bits per word
 */
 ret = ioctl(fd, SPI_IOC_WR_BITS_PER_WORD, bits);
 if (ret == -1)
 pabort(can't set bits per word);
ret = ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, bits);
 if (ret == -1)
 pabort(can't get bits per word);

/*
 * max speed hz
 */
 ret = ioctl(fd, SPI_IOC_WR_MAX_SPEED_HZ, speed);
 if (ret == -1)
 pabort(can't set max speed hz);
ret = ioctl(fd, SPI_IOC_RD_MAX_SPEED_HZ, speed);
 if (ret == -1)
 pabort(can't get max speed hz);

}

void spi_transfer(uint8_t *txbuffer, int size, int gpio) 
{

 int fd;
 int ret = 0;
 //uint8_t tx[8];
 //tx[0]='0';
 //tx[1]='1';
 //tx[2]='2';
 //tx[3]='3';
 //tx[4]='4';
 //tx[5]='5';
 //tx[6]='6';
 //tx[7]='7';

//uint8_t rx[ARRAY_SIZE(txbuffer)] = {0, };
uint8_t rx[size];


 struct spi_ioc_transfer tr = {
 //tr.tx_buf = (unsigned long)tx,
 //tr.rx_buf = (unsigned long)rx,
 //tr.len = ARRAY_SIZE(tx),
 tr.tx_buf = (unsigned long)txbuffer,
 tr.rx_buf = (unsigned long)rx,
 tr.len = size,
 tr.delay_usecs = delay,
 tr.speed_hz = speed,
 tr.bits_per_word = bits,
 };

 fd = open(device, O_RDWR);
 if (fd  0)
 pabort(can't open device);


gpio_set_value(gpio, LOW);
ret = ioctl(fd, SPI_IOC_MESSAGE(1), tr);
 if (ret  1)
 pabort(can't send spi message);

close(fd);

[beagleboard] Re: Only able to read 0x0 or FF with spidev...

2014-11-10 Thread janszymanski12345

Hi,

 Following the links: http://elinux.org/BeagleBone_Black_Enable_SPIDEV and 
http://www.nagavenkat.adurthi.com/2014/02/spi-communication-beaglebone-black-as-master-to-arduino-as-slave/
 
I was able to make it work, but I have a SS too long (1.4ms) for my need. 
For easy test connect MOSI and MISO with a wire (loopback) to eliminate 
connection problem with you SPI slave.
Hope this will help. When you done, can you measure the timing a let me 
know?
I can post you my code if you need it.

Jan

On Tuesday, November 11, 2014 5:03:38 AM UTC+11, lambert...@gmail.com wrote:

 Hi,

 I am trying to communicate with a device (ADS1299à by using the Beaglebone 
 black but without success. First I have to enable spi dev entries in /dev. 
 There are plenty of blog/tuto which are giving dtc file to generate our own 
 dtbo. But dtc files seems to not be always the same.

 In fact I can see that there are already some dtbo files in /lib/firmware 
 : 
 root@beaglebone:~# ls /lib/firmware/ | grep SPI
 ADAFRUIT-SPI0-00A0.dtbo
 ADAFRUIT-SPI1-00A0.dtbo
 BB-SPIDEV0-00A0.dtbo
 BB-SPIDEV1-00A0.dtbo
 BB-SPIDEV1A1-00A0.dtbo

 So I want to use only SPI0 because I know that SPI1 is already used by 
 HDMI. Can I used theses dtbo files ? Is it better to write my own ? It is 
 quite strange, when I enable one of theses dtbo files, I get not only one 
 but two entries in /dev ??

 Currently I want to validate my wiring between the two boards. I found a 
 piece of code to read the device id in register of the device though SPI. 
 But when I try to read this register, I can only get 1 or only get 0 
 (depends of the dtbo files)

 Any advice of the good way to process here ?

 Thanks  Regards,
 Arthur.






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[beagleboard] very long CS with SPIDEV1

2014-11-09 Thread janszymanski12345

Hi 

 I'm trying to do some SPI programming on BBB using SPIDEV1 and based on 
examples and it works, but not satisfactory ...
The length of CS is about 1.4ms no matter what is the clock (SCK) speed. 
I transfer 2 bytes and the transfer start almost immediately after CS goes 
low, but then CS stays active low for a long
time after CLK and MOSI are gone. 
Is it normal or am I doing something wrong?
I need a higher speed than what I have now.

Jan

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[beagleboard] load device tree overlay through uEnv.txt on startup

2014-11-05 Thread janszymanski12345

Hi,

 I want to load a device tree overlay on startup by including it in uEnv.tx 
like this
...
#cape_enable=capemgr.enable_partno=BB-BONE-AUDI-02
cape_enable=capemgr.enable_partno=SPI-4SS
...

It desn't work as there is another file I need to modify and I forgot where 
it is.

my image is:
root@beaglebone:~# uname -a
Linux beaglebone 3.8.13-bone67 #1 SMP Wed Sep 24 21:30:03 UTC 2014 armv7l 
GNU/Linux

Thanks
Jan

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[beagleboard] Re: load device tree overlay through uEnv.txt on startup

2014-11-05 Thread janszymanski12345

OK, found it. It's here 
http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Loading_custom_capes 
In case other people have a similar problem.


Workaround: 

add CAPE=BB-SPI1-01 to /etc/default/capemgr
The problem is that all that info is all over the places and changes all the 
time.



On Thursday, November 6, 2014 1:49:15 PM UTC+11, janszyma...@gmail.com 
wrote:

 Hi,

  I want to load a device tree overlay on startup by including it in 
 uEnv.tx like this
 ...
 #cape_enable=capemgr.enable_partno=BB-BONE-AUDI-02
 cape_enable=capemgr.enable_partno=SPI-4SS
 ...

 It desn't work as there is another file I need to modify and I forgot 
 where it is.

 my image is:
 root@beaglebone:~# uname -a
 Linux beaglebone 3.8.13-bone67 #1 SMP Wed Sep 24 21:30:03 UTC 2014 armv7l 
 GNU/Linux

 Thanks
 Jan



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[beagleboard] Re: Multiple SPI Kernel Drivers on the Same SPI Bus?

2014-11-04 Thread janszymanski12345


use GPIO as slave selects
http://www.nagavenkat.adurthi.com/2014/02/spi-communication-beaglebone-black-as-master-to-arduino-as-slave/
 


On Sunday, October 26, 2014 10:43:02 AM UTC+11, bra...@gmail.com wrote:

 *Background*

 I have a Beagle Bone Black cape with both a Nordic nRF51822 and TI CC2520. 
 Both of these devices are on the SPI0 bus. I have kernel drivers that work 
 for each separately on Debian 3.8.13.

 *Goal*

 I would like to be able to load both kernel drivers at the same time and 
 have them share the SPI bus.

 *Issue*

 While I have figured out how to make each kernel driver take control of 
 the SPI0 bus when loaded separately, I can't seem to get them to each have 
 access when loaded together. I'm far from an expert on device tree overlays 
 and am not sure how to glue everything together so that the kernel drives 
 are successfully loaded.

 Here is my code so far in the kernel driver that pertains to creating the 
 SPI device for the nRF51822. I create a struct spi_driver with config 
 information and then call module_spi_driver() to init, etc. (copied from 
 /linux/drivers/net/ieee802154/cc2520.c). The probe() function callback 
 sets up a character device and configures some GPIOs (that code needs to be 
 updated to work with device tree, but for now it should be fine).


 static int nrf51822_spi_probe(struct spi_device *spi_device)
 {
 ERR(KERN_INFO, Inserting SPI protocol driver.\n);
 nrf51822_spi_device = spi_device;

 //
 // Create a buffer to move data over the character device
 //
 ...

 //
 // Setup the interrupt from the nRF51822
 //
 ...

 //
 // Configure the character device in /dev
 //
 ...

 return 0;
 }

 static int nrf51822_spi_remove(struct spi_device *spi_device)
 {
 ERR(KERN_INFO, Removing SPI protocol driver.);
 nrf51822_spi_device = NULL;

 // Free memory and close things
 }


 static const struct spi_device_id nrf51822_ids[] = {
 {nrf51822, },
 {},
 };
 MODULE_DEVICE_TABLE(spi, nrf51822_ids);


 static const struct of_device_id nrf51822_of_ids[] = {
 {.compatible = brad,nrf51822, },
 {},
 };
 MODULE_DEVICE_TABLE(of, nrf51822_of_ids);


 // Configure SPI
 static struct spi_driver nrf51822_spi_driver = {
 .driver = {
 .name = nrf51822_name,
 .owner = THIS_MODULE,
 .bus = spi_bus_type,
 .of_match_table = of_match_ptr(nrf51822_of_ids),
 },
 .id_table = nrf51822_ids,
 .probe = nrf51822_spi_probe,
 .remove = nrf51822_spi_remove,
 };

 // This I believe will load this driver correctly
 // and cause it to be probed when it is needed.
 module_spi_driver(nrf51822_spi_driver);

 MODULE_LICENSE(GPL);
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);

 And here is my attempt at a device overlay. I'm only claiming a single 
 GPIO which I use as an interrupt from the nRF51822 back to the beagle bone.

 /dts-v1/;
 /plugin/;

 / {
 compatible = ti,beaglebone, ti,beaglebone-black;

 /* identification */
 part-number = BB-BONE-NRF51822;
 version = 00A0;

 /* state the resources this cape uses */
 exclusive-use =
 /* the pin header uses */

 /* GPIO */
 P9.16,   /* Interrupt from NRF51822 */

 /* the hardware ip uses */
 gpio1_19;


 fragment@0 {
 target = am33xx_pinmux;
 __overlay__ {
 bb_cc2520_gpio_pins: pinmux_bb_2520_gpio_pins {
 compatible = nrf51822;
 pinctrl-single,pins = 
 /* GPIO */
 0x04C 0x2F /* ehrpwm1b.gpio1_19, 
 INPUT | MODE7 */
 ;
 };
 };
 };

 fragment@1 {
 target = ocp;
 __overlay__ {
 nrf51822 {
 compatible = brad,nrf51822;

 /* the power control gpio */
 interrupt-gpio = gpio1 19 0x0;

 /* the muxing */
 pinctrl-names = default;
 pinctrl-0 = nrf51822_pins;
 };
 };
 };
 };

 The end effect is that my probe() function in the kernel driver is never 
 called, even after loading the overlay and kernel module.

 How do I set things up so that two kernel modules can both use SPI0? Has 
 anyone tried this? Everything I've looked at appears to assume only one 
 device is attached to the SPI bus so it can specify the SPI pins in its 
 .dts file (but I could be wrong about that).

 Thanks for any help or direction.


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[beagleboard] Re: Beaglebone Black and Web Servers?

2014-11-03 Thread janszymanski12345

There is already nodejs installed on BBB, you can simply run webserver 
using it.http://nodejs.org/ 

On Saturday, 11 January 2014 14:37:07 UTC+11, COG wrote:

 Hi:

 I am a newbie to the Beaglebone arena and I have some questions dealing 
 with which web server(s) to use.  

 (i) What is a good web server(s) to use?
 (ii) On which Operating System?
 (iii) Can Django be installed on the Beaglebone Black?
 (iv) If Yes, what would I have to do?  E.g. Where to find the install file 
 and instructions?

 *Note:*  I have experience programming in both Java and Python; and using 
 the OS Ubuntu and a desktop.

 Regards
 COG


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[beagleboard] Re: Enable UART1

2014-10-26 Thread janszymanski12345

login as: debian
Debian GNU/Linux 7

BeagleBoard.org BeagleBone Debian Image 2014-04-23

Support/FAQ: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian
debian@138.25.248.153's password:
debian@beaglebone:~$ cd /lib/firmware
debian@beaglebone:/lib/firmware$ ls *UART*
ADAFRUIT-UART1-00A0.dtbo  BB-UART1-00A0.dtbo 
BB-UART4-RTSCTS-00A0.dtbo
ADAFRUIT-UART2-00A0.dtbo  BB-UART2-00A0.dtbo BB-UART5-00A0.dtbo
ADAFRUIT-UART4-00A0.dtbo  BB-UART2-RTSCTS-00A0.dtbo
ADAFRUIT-UART5-00A0.dtbo  BB-UART4-00A0.dtbo
debian@beaglebone:/lib/firmware$

In your uEnv.tx put
optargs=capemgr.enable_partno = BB-UART1,BB-UART2

you are missing one '-', but have one too many '#' - indicates comment

Hope this will help

Jan


On Sunday, October 26, 2014 2:10:10 PM UTC+11, Jimit Doshi wrote:

 Hello All,

 I plan to use UART1 and UART2 of BBB for an application. I understand that 
 only UART0 (which is any ways used for debug purpose) is enabled by 
 default. As such, I see only 'ttyO0' in my '/dev/' directory. 

 To enable UART1/2 , I added the following line in my uEnv.txt file :

 #optargs=capemgr.enable_partno = BB-UART1,BBUART2

 However, on reboot I don't see 'ttyO1' and 'ttyO2' in my '/dev/' 
 directory. 

 What am I missing?

 Thanks!

 PS : I am using the BBB rev C with the stock Debian distribuition.




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Re: [beagleboard] Re: BBB kernel update

2014-10-22 Thread janszymanski12345

Thanks Robert,

It will be easier to access, no need to mount the FAT partition.

Jan

On Thursday, October 23, 2014 12:33:26 AM UTC+11, RobertCNelson wrote:

 On Wed, Oct 22, 2014 at 12:12 AM,  janszyma...@gmail.com javascript: 
 wrote: 
  OK, I did it, but where is uEnv.txt? 
  
  before I was able to do that: 
  
  in /mnt/emmcfat edit uEnv.txt 
  
  ##Disable HDMI 
  
  #optargs=capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN 
  
  optargs=capemgr.enable_partno=BB-UART1,BB-SPIDEV0 
  
  How to do it now? 

 It's under: 

 /boot/uEnv.txt 

 on the ext4 partition. 

 Regards, 

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


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[beagleboard] Re: Anyone interested in LEGO EV3? I'm trying to transplant EV3 system to Beaglebone Black.

Congratulations on your wedding, but once married will you have any time 
for the project?
Are you willing to share your work?

Regards
Jan

On Wednesday, October 22, 2014 2:45:26 AM UTC+11, Fat Cat Man wrote:

 Yes, I've came to my hometown to hold a wedding ceremony last 2 weeks.
 I've updated all the linux drivers to 1.06x. Now it works fine with the 
 native labview language.
 Now I'm making the smart UART sensor, I have already made a prototype. It 
 can measure couple of analog channels and transmit the data throuth the 
 uart. It means a huge kinds of arduino analog sensors can be used for ev3 
 now: ) And it's very easy to develop any kind of new sensors.


 在 2014年10月13日星期一UTC+8上午8时18分48秒，janszyma...@gmail.com写道：

 Hi,

  Are you still working on it?
 If yes, any progress so far?

 Jan

 On Thursday, 17 July 2014 16:21:40 UTC+10, Fat Cat Man wrote:

 As you know, LEGO announced their Mindstorms EV3 robot system last year. 
 The EV3 system is based on linux, they published the full source code at 
 *https://github.com/mindboards/ev3sources* 
 https://github.com/mindboards/ev3sources 

 When I got the source code, I was wondering if I can transplant all the 
 code to Beaglebone Black. The EV3 use a TI AM1808 MCU as its cpu and BBB 
 use TI AM3359. Many of the registers are common. So after several months 
 work, I'm almost done. Here are some pitcures shows my progress:


 https://lh4.googleusercontent.com/-8Rs9k9Eu_D0/U8dpDLOgKQI/AMM/faPk1ThQw4Q/s1600/1.png


 https://lh6.googleusercontent.com/-UDKy4IU8Rt4/U8dpY17HhEI/AMU/AAEM0zFptdw/s1600/2.png


 https://lh5.googleusercontent.com/-C0q0GqGPUcY/U8dpuxzKBfI/AMc/gCGdPNd7sYU/s1600/3.png


 As you can see, there are still some bugs in the system. After the main 
 lms2012 program running for a while, it would appear a warning, and then 
 quit. Now I'm designing the cape PCB board. It can provide the input and 
 output capacity as same as EV3.





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[beagleboard] BBB kernel update

Hi,

How to update the kernel on BBB debian?


debian@beaglebone:~$ uname -a
Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 armv7l 
GNU/Linux
debian@beaglebone:~$ sudo apt-get install linux-image-3.14.19-ti-r27
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package linux-image-3.14.19-ti-r27
E: Couldn't find any package by regex 'linux-image-3.14.19-ti-r27'
debian@beaglebone:~$


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Re: [beagleboard] BBB kernel update


debian@beaglebone:~$ cat /etc/dogtag
BeagleBoard.org BeagleBone Debian Image 2014-05-14
debian@beaglebone:~$


On Wednesday, October 22, 2014 11:53:57 AM UTC+11, RobertCNelson wrote:

 On Tue, Oct 21, 2014 at 6:29 PM,  janszyma...@gmail.com javascript: 
 wrote: 
  Hi, 
  
  How to update the kernel on BBB debian? 
  
  
  debian@beaglebone:~$ uname -a 
  Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 
 armv7l 
  GNU/Linux 
  debian@beaglebone:~$ sudo apt-get install linux-image-3.14.19-ti-r27 
  Reading package lists... Done 
  Building dependency tree 
  Reading state information... Done 
  E: Unable to locate package linux-image-3.14.19-ti-r27 
  E: Couldn't find any package by regex 'linux-image-3.14.19-ti-r27' 
  debian@beaglebone:~$ 

 cat /etc/dogtag 

 Regards, 

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


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Re: [beagleboard] BBB kernel update

Thanks Robert, but it didn't work

debian@beaglebone:~$ df -h
Filesystem  Size  Used Avail 
Use% Mounted on
rootfs  3.4G  1.5G  1.8G  
45% /
.
debian@beaglebone:~$ cd /opt/scripts/tools/
debian@beaglebone:/opt/scripts/tools$ git pull
.
`/boot/vmlinuz-3.14.19-ti-r30' - `/boot/uboot/zImage'
`/boot/initrd.img-3.14.19-ti-r30' - `/boot/uboot/initrd.img'
cp: writing `/boot/uboot/initrd.img': No space left on device
*cp: failed to extend `/boot/uboot/initrd.img': No space left on device*
-
Script done: please reboot
debian@beaglebone:/opt/scripts/tools$

Jan

On Wednesday, October 22, 2014 12:53:44 PM UTC+11, RobertCNelson wrote:

 On Tue, Oct 21, 2014 at 8:43 PM,  janszyma...@gmail.com javascript: 
 wrote: 
  
  debian@beaglebone:~$ cat /etc/dogtag 
  BeagleBoard.org BeagleBone Debian Image 2014-05-14 
  debian@beaglebone:~$ 

 That's pre-repo.. 

 Run: 

 cd /opt/scripts/tools/ 
 git pull 
 sudo ./update_kernel.sh --ti-kernel 
 sudo reboot 

 This will install: (--ti-kernel switches to the ti channel) 

 http://rcn-ee.net/deb/wheezy-armhf/LATEST-ti 

 v3.14.19-ti-r30 

 Regards, 

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


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[beagleboard] Re: BBB kernel update

OK, I did it, but where is uEnv.txt?

before I was able to do that:

in /mnt/emmcfat edit uEnv.txt

##Disable HDMI

#optargs=capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN

optargs=capemgr.enable_partno=BB-UART1,BB-SPIDEV0

How to do it now?



On Wednesday, 22 October 2014 10:29:12 UTC+11, janszyma...@gmail.com wrote:

 Hi,

 How to update the kernel on BBB debian?


 debian@beaglebone:~$ uname -a
 Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 armv7l 
 GNU/Linux
 debian@beaglebone:~$ sudo apt-get install linux-image-3.14.19-ti-r27
 Reading package lists... Done
 Building dependency tree
 Reading state information... Done
 E: Unable to locate package linux-image-3.14.19-ti-r27
 E: Couldn't find any package by regex 'linux-image-3.14.19-ti-r27'
 debian@beaglebone:~$




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[beagleboard] root password BBB ubuntu

Hi,

 After installing ubuntu console on BBB from here: 
http://elinux.org/BeagleBoardUbuntu#Trusty_14.04 and connecting with Putty

login as: ubuntu
ubuntu@192.168.7.2's password:
Welcome to Ubuntu 14.04.1 LTS (GNU/Linux 3.8.13-bone63 armv7l)

 * Documentation:  https://help.ubuntu.com/
Last login: Wed Aug 13 18:11:23 2014 from 192.168.7.1
ubuntu@arm:~$ sudo passwd root
[sudo] password for ubuntu:

what is the [sudo] password, root password?

How can I login as root? change password for root?

Jan

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Re: [beagleboard] root password BBB ubuntu

Hi,

 I did follow the exact link, but the instruction given do not work.

First question:
what would i type after: sudo apt-get update, when asked for password? 
(tried nothing, root, ... temppwd - nothing works)

login as: ubuntu
ubuntu@192.168.7.2's password:
Welcome to Ubuntu 14.04.1 LTS (GNU/Linux 3.8.13-bone63 armv7l)

 * Documentation:  https://help.ubuntu.com/
Last login: Wed Aug 13 17:36:43 2014 from 192.168.7.1
ubuntu@arm:~$ sudo apt-get update
[sudo] password for ubuntu:
Sorry, try again.
[sudo] password for ubuntu:

Second question:
The instruction at the link says:

Enabling 

To actually enable root logins first you have to set a password for the 
root account and then unlock the locked root account. If you don't set a 
password for the root account the passwd command will return 

passwd: unlocking the password would result in a passwordless account.  

So, rirst execute in a terminal 

sudo passwd root

you will prompted for a new Unix password. Write it twice(second for 
confirmation).

Then execute 

sudo passwd -u root 

to unlock the account. This should return 

passwd: password expiry information changed

From theory to reality:


ubuntu@arm:~$ sudo passwd root
[sudo] password for ubuntu:

 what now?

Jan







On Tuesday, October 14, 2014 11:06:16 AM UTC+11, RobertCNelson wrote:

 On Mon, Oct 13, 2014 at 7:01 PM, Robert Nelson robert...@gmail.com 
 javascript: wrote: 
  On Mon, Oct 13, 2014 at 6:48 PM,  janszyma...@gmail.com javascript: 
 wrote: 
  Hi, 
  
   After installing ubuntu console on BBB from here: 
  http://elinux.org/BeagleBoardUbuntu#Trusty_14.04 and connecting with 
 Putty 
  
  login as: ubuntu 
  ubu...@192.168.7.2 javascript:'s password: 
  Welcome to Ubuntu 14.04.1 LTS (GNU/Linux 3.8.13-bone63 armv7l) 
  
   * Documentation:  https://help.ubuntu.com/ 
  Last login: Wed Aug 13 18:11:23 2014 from 192.168.7.1 
  ubuntu@arm:~$ sudo passwd root 
  [sudo] password for ubuntu: 
  
  what is the [sudo] password, root password? 
  
  How can I login as root? change password for root? 
  
  It's ubuntu, by default there is no root user.. 
  
  This is the way ubuntu has been since 2006, if you want a root user 
  you need to enable/create it. 

 second link if you would have searched google.. 

 http://askubuntu.com/questions/44418/how-to-enable-root-login 

 Regards, 

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


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[beagleboard] Re: root password BBB ubuntu

I'm using the prebuilt image 

Get prebuilt image: 

wget 
https://rcn-ee.net/deb/flasher/trusty/BBB-eMMC-flasher-ubuntu-14.04-console-armhf-2014-08-13-2gb.img.xz


from here http://elinux.org/BeagleBoardUbuntu#Trusty_14.04 
Can you provide a link to another one, maybe I will have more luck then?

Jan 


On Tuesday, October 14, 2014 10:48:18 AM UTC+11, janszyma...@gmail.com 
wrote:

 Hi,

  After installing ubuntu console on BBB from here: 
 http://elinux.org/BeagleBoardUbuntu#Trusty_14.04 and connecting with Putty

 login as: ubuntu
 ubuntu@192.168.7.2's password:
 Welcome to Ubuntu 14.04.1 LTS (GNU/Linux 3.8.13-bone63 armv7l)

  * Documentation:  https://help.ubuntu.com/
 Last login: Wed Aug 13 18:11:23 2014 from 192.168.7.1
 ubuntu@arm:~$ sudo passwd root
 [sudo] password for ubuntu:

 what is the [sudo] password, root password?

 How can I login as root? change password for root?

 Jan



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Re: [beagleboard] Re: root password BBB ubuntu

Robert,

 I did again an eMMC flasher and now temppwd works, but still unable to 
login as root

login as: ubuntu
ubuntu@192.168.7.2's password:
Welcome to Ubuntu 14.04.1 LTS (GNU/Linux 3.8.13-bone63 armv7l)

 * Documentation:  https://help.ubuntu.com/
Last login: Tue Oct 14 01:04:07 2014 from 192.168.7.1
ubuntu@arm:~$ sudo passwd root
[sudo] password for ubuntu:
Sorry, try again.
[sudo] password for ubuntu:
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
ubuntu@arm:~$ sudo passwd -u root
passwd: password expiry information changed.
ubuntu@arm:~$

login as: root
root@192.168.7.2's password:
Access denied
root@192.168.7.2's password:


Any hints?

Jan



On Tuesday, October 14, 2014 11:42:01 AM UTC+11, RobertCNelson wrote:

 On Mon, Oct 13, 2014 at 7:38 PM,  janszyma...@gmail.com javascript: 
 wrote: 
  I'm using the prebuilt image 
  
  Get prebuilt image: 
  
  wget 
  
 https://rcn-ee.net/deb/flasher/trusty/BBB-eMMC-flasher-ubuntu-14.04-console-armhf-2014-08-13-2gb.img.xz
  
  
  
  from here http://elinux.org/BeagleBoardUbuntu#Trusty_14.04 
  Can you provide a link to another one, maybe I will have more luck then? 

 That was the v2014.08 release, user and password where setup as: 


 https://github.com/RobertCNelson/omap-image-builder/blob/v2014.08/configs/rcn-ee_console_ubuntu_stable_armhf.conf#L26
  

 Regards, 

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


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Re: [beagleboard] Re: root password BBB ubuntu

In theory http://en.wikiquote.org/wiki/Theory, there is no difference 
between theory and practice. But, in practice, there is. 

I have modified the file /etc/ssh/sshd_config according to 
http://askubuntu.com/questions/469143/how-to-enable-ssh-root-access-on-ubuntu-14-04,
but still no root access through ssh.

# Package generated configuration file
# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 1024

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120
#PermitRootLogin without-password
PermitRootLogin yes
StrictModes yes

RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile%h/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for 
RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication yes

# Kerberos options
#KerberosAuthentication no
#KerberosGetAFSToken no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

Subsystem sftp /usr/lib/openssh/sftp-server

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of PermitRootLogin without-password.
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes

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Re: [beagleboard] Re: root password BBB ubuntu