gumstix

Hello,

  This seems like a basic question, but I'm really at an impasse.
Until recently, USBnet between the Gumstix and FC3 has been working
flawlessly.  Recently, however, USBnet seems to be failing.  I've
loaded new buildroots onto the gumstix several times since then, and
do not know whent he failure really started.  Here is what I do know:

-On the gumstix side (I'm accessing it via serial) I can see that the
usb0 interface is up.

-The gumstix reports that it finds the host MAC.

-FC3 sometimes recognizes that it has detected a gadget, and shows it
on 'lsusb'.

-usb0 never comes up on FC3.

-On another Linux box (FC4) the USBnet interface did not come up, and
the gumstix was not shown in the output of 'lsusb'.

-Behavior is not affected by swithcing from a STUART board to a breakout-gs=
.


The USB circuitry within the PXA might be fried, or perhaps I'm
lacking some sort of tweak to the latest builds to make USBnet
function.  The wiki only really instructs a user to try plugging the
USB cable in a second time if the interface on either side fails to
come up.

Can anyone suggest a course of action?

Thanks.

I'll snap some pictures later today -- I've made half of the mod =20
here, and have been trying to solder a 10=BD 0603 resistor directly =20
between the two pins which need to be connected; perhaps too =20
ambitious and I should just live with wires sticking up from the =20
board...  Stupid surface tension, why does solder have to be so sticky?

C

On May 12, 2006, at 11:54 AM, Andrew Plumb wrote:

> Just received my GPSstix today.  Any chance you could take a couple of
> digital pics of the mod?
>
> Andrew.
>
> On 5/11/06, John Cole <cole@...> wrote:
>> Just a word of encouragement for anybody still thinking about =20
>> modifying
>> their gpsstix for an active antenna.  I followed James Coxon's =20
>> earlier
>> directions, and now my active antenna works perfectly.
>>
>> John
>>
>> James Coxon wrote:
>>
>> > so here is what i did, I cut the trace from 19 to GND rather =20
>> bluntly
>> > but its quite a small space so you need a sharp knife. Then =20
>> instead of
>> > trying to solder a resistor to two adjacent pins i actually =20
>> soldered
>> > it from VCC from NSSP to 19 plug the resistor in and it worked. =20
>> Once i
>> > get gpsd working i'll take some pictures and update my site if you
>> > still need guidance. James
>>
>>
>>
>>
>> -------------------------------------------------------
>> Using Tomcat but need to do more? Need to support web services, =20
>> security?
>> Get stuff done quickly with pre-integrated technology to make your =20=

>> job easier
>> Download IBM WebSphere Application Server v.1.0.1 based on Apache =20
>> Geronimo
>> http://sel.as-us.falkag.net/sel?=20
>> cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=3D121642
>> _______________________________________________
>> gumstix-users mailing list
>> gumstix-users@...
>> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>>
>
>
> --=20
> If you don't know what to do, do something.
>
> Eye:  http://www.flickr.com/photos/aplumb/
>
>
> -------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, =20
> security?
> Get stuff done quickly with pre-integrated technology to make your =20
> job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache =20
> Geronimo
> http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=120709&bid&3057&dat=121642=

> _______________________________________________
> gumstix-users mailing list
> gumstix-users@...
> https://lists.sourceforge.net/lists/listinfo/gumstix-users

Hi all,

What are people using as an antenna with the new GPSstix?  Is there a good 
passive antenna out there with an SMA connector (it looks like Sparkfun has only 
active)?  Should I bite the bullet and do the hardware mods to use an active 
antenna?

thanks in advance,
Josh

I know there was a recent post on this topic but I couldn't find any reso=
lution. Is there a way to get the jffs2 image off the gumstix? I want to =
modify a image I have made on the gumstix taking off modules, executeable=
s, etc. until I get a bare bones image I can use for production. It is mu=
ch easier to do this on the gumstix and then transfer the resulting jffs2=
 image than making image after image and loading the gumstix to test it.
=20
Thanks,
Ben Erridge
The contents of this e-mail are intended for the named addressee only. It=
 contains information that may be confidential. Unless you are the named =
addressee or an authorized designee, you may not copy or use it, or discl=
ose it to anyone else. If you received it in error please notify us immed=
iately and then destroy it.=20

Hi everyone,

I'm a high-school student looking into Gumstix for robotics applications 
and general embedded computing. I've got background in Linux and 
programming - so I think I can work out those areas - but I do not have 
very much electronics or embedded device experience. Would Gumstix be an 
easy platform to get started with, or should I wait until I am more 
comfortable in those areas? Thanks for any advice,

-Ross

Hi all.
   
  I want to use Dave's char-driver module to register time intervals between pulses at 200kHz speed aprox. Can i use the OS timer (OSCR) register wich is clocked by the 3.6864MHz oscilator for a faster count than kernel 100Hz ?
  I'm new at driver programing or memory mapping, somebody can help me? any hint, tip or example will be welcome.
   
  thanks.
   
  Eduardo Barrera

		
---------------------------------
Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls.  Great rates starting at 1¢/min.

Two posts to the list this weekend never appeared... yet I've  
received 4-5 msgs since sending mine.  Hmmm...

Marc,

Thanks for the reply.  The kernel panic was probably related to bad environment, and possibly the 1f* arg.  

However, the problem had grown worse by the time I wrote my email.  Note at the end, the gumstix is completely unresponsive.  I don't get u-boot, or any activity on ttyS0.

I think it requires a reflash, and I wanted to confirm or get a fix.

----

To continue my work while I get this 200bt problem resolved, I cracked open a new 400xm I recently bought.  It's completely stock (v773), powered up only once or twice to check that it arrived ok.

I must not have noticed on any previous boot, but u-boot does not give me a countdown, it jumps straight into checking JFFS2.  In reading posts, I have deduced that the bootdelay arg is set to zero.   How, I do not know.  I didn't even know the arg existed.  Unfortunately, it's now impossible to flash a new u-boot or rootfs.

On another post, I found mention of a CL utility to change the u-boot params.  I have tracked it down to ~/gum*/build_arm/u-boot-1.1.4/tools/env.  However, the provided code requires some customization which is beyond my current level.  Has anyone configured and compiled this code for the gumstix?  If not, is there a kind soul with a few minutes who could, and post the binary to a website or similar?

Thanks,
Randy
  

>Hi randy,
>
>After you flashed to the root fs, did you forget to >change the bootargs to
>tell the kernel to boot from 1f01 instead of 1f02 ?

Hi Adrian!

I have one solution of the "Freeing init memory" problem.
It seems to be uClibc that causes this, by using the attached little
patch the problem should go away. You probably need to rebuild the while
toolchain. I have not done any extensive search to find the actual cause
of this problem.

This problem came with revision 985 of the buildroot tree. The
/target/device/Gumstix/basix-connex/uClibc.config was changed.

Markus Söderholm

Adrian Papari wrote:
> Greetings,
> 
> Did you solve your boot-related problems? Since transferring my own
> jffs image, I have the same problem (current configuration is a basix
> 400xm and waysmall STUART). I've tried disconnecting the usb cable
> prior to booting, as suggested elsewhere, but to no avail.
> 
> Regards,
> Adrian
> 
> On 5/9/06, Kevin Worth <kworth@...> wrote:
>> Sounds good- I am loading an old jffs image that I knew worked to make
>> sure that still works, then I will try the current build to see what
>> the debug output shows.
>>
>> On 5/8/06, Craig Hughes <craig@...> wrote:
>> > On May 8, 2006, at 4:09 PM, Kevin Worth wrote:
>> >
>> > > This stinks- I had a working rootfs on my gumstix and wanted to
>> > > re-flash with a newer build, now things are not behaving well at all.
>> > >
>> > > Has anyone seen behavior like the following?:
>> > >
>> > > Often when it boots it stops on the "Freeing init memory (56K)"
>> > > message and sits there forever (I have tried leaving it for almost an
>> > > hour and no luck). If I reboot it it seems to come up. I tried
>> > > appending debug_user=0x1f to bootargs in u-boot as Craig suggested
>> but
>> > > it doesn't display any extra info (is the address wrong or
>> something?)
>> >
>> > That's spelled wrong :)  It should be user_debug=0x1f instead
>> >
>> > > The other problem is that I have a tweener and an etherstix, which
>> are
>> > > mutually exclusive. I boot with the tweener and it seems to work most
>> > > of the time. I connect the etherstix and it boots, the network lights
>> > > come on, I can ping it, and if I nmap it, I get
>> > >
>> > > PORT    STATE SERVICE
>> > > 13/tcp  open  daytime
>> > > 22/tcp  open  ssh
>> > > 37/tcp  open  time
>> > > 80/tcp  open  http
>> > > 113/tcp open  auth
>> > >
>> > > However, if I attempt to connect I get ssh: connect to host
>> > > (ipaddress) port 22: Connection refused.
>> > >
>> > > Anyone have any ideas? Did something change in the default buildroot
>> > > in the last month or so to change the default dropbear settings?
>> >
>> > These two could well be related -- see what user_debug=0x1f says.  It
>> > might point to something which si failing on startup.
>> >
>> > C
>> >
>> >
>> > -------------------------------------------------------
>> > Using Tomcat but need to do more? Need to support web services,
>> security?
>> > Get stuff done quickly with pre-integrated technology to make your
>> job easier
>> > Download IBM WebSphere Application Server v.1.0.1 based on Apache
>> Geronimo
>> >
>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> > _______________________________________________
>> > gumstix-users mailing list
>> > gumstix-users@...
>> > https://lists.sourceforge.net/lists/listinfo/gumstix-users
>> >
>>
>>
>> -------------------------------------------------------
>> Using Tomcat but need to do more? Need to support web services, security?
>> Get stuff done quickly with pre-integrated technology to make your job
>> easier
>> Download IBM WebSphere Application Server v.1.0.1 based on Apache
>> Geronimo
>> http://sel.as-us.falkag.net/sel?cmdlnk&kid0709&bid&3057&dat1642
>> _______________________________________________
>> gumstix-users mailing list
>> gumstix-users@...
>> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>>
> 
> 
> -------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job
> easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=k&kid0709&bid&3057&dat1642

[hopefully the 3rd attempt to send this will work!  Apologies if  
copies materialize out of the ether]

I'm using the 128MB SimpleTech listed on the wiki MMC compatibility  
page.  It's worked fine for a year and a half, and still works with  
the older u-boot.


On May 12, 2006, at 9:56 AM, Craig Hughes wrote:


> Ok, that's the 2nd person who's reported that.  What card(s) are  
> you guys using, which aren't working?  Everything I've tried works  
> fine.
>
> C
>

Hi Andrew,

>    Thanks for the info.  I believe I've recompiled my kernel with this
> option (after some labor).  I'm struggling now with a
> rootfs.arm_nofpu.jffs2 that is just over 5MB in size.  I don't think I
> can use this because I believe my flash is 4MB.  So, I'm trying to
> figure out how it got so big and trying to reduce its size.

You may want to start over. The default buildroot should fit, and the
MQUEUE stuff shouldn't add very much. So, you must have gotten a bunch
of other stuff enabled as well.

So start over, do

rm -rf build_arm_nofpu toolchain_build_arm_nofpu

from within the gumstix_buildroot.

Then do:

make defconfig
make
cd build_arm_nofpu/linux-2.6.15gum
cp .config .config.org
make ARCH=3Darm menuconfig
set the MQUEUE option and save your config
diff .config.org .config
4c4
< # Sun May 14 20:04:42 2006
---
> # Sun May 14 21:19:39 2006
27c27
< # CONFIG_POSIX_MQUEUE is not set
---
> CONFIG_POSIX_MQUEUE=3Dy
cd ../.. (into the gumstix-buildroot directory)
make

I wound up with a jffs2 image that was 3,386,760 bytes

--=20
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/

Ahh. Very nice. Amazing how other people doing the same search I do =
provides different results. Actually, I did a search on Sourceforge as =
well. Either way, greatly appreciated, Craig. Just a bit of =
modification, and I will be able to apply this base code to a few other =
NN models I require.=20

________________________________

From: gumstix-users-admin@... on behalf of Craig =
Hughes
Sent: Fri 5/12/2006 4:02 PM
To: gumstix-users@...
Subject: Re: [Gumstix-users] iLab Toolkit/Visual Processing



A quick google yielded:

http://fann.sourceforge.net/report/report.html

Looks like a fixed-point supporting NN open source lib

C

On May 12, 2006, at 11:08 AM, Erik D. Rodriguez wrote:

> Some library like you mentioned would be primo! My specific usage=20
> involves all the floating point calculations in my neural network=20
> (Including the iLab toolbox). I have been banging my head against=20
> the wall trying to figure out how to modify the calculations to=20
> work with fixed point. Alas, I am not a mathematician. Just a dumb=20
> little programmer.
>
> You get that next-gen Gum out and I will be one of the first=20
> customers. Until then, anyone have a library that would help on this?
>
> ________________________________
>
> From: gumstix-users-admin@... on behalf of Craig=20
> Hughes
> Sent: Fri 5/12/2006 1:17 PM
> To: gumstix-users@...
> Subject: Re: [Gumstix-users] iLab Toolkit/Visual Processing
>
>
>
> We're working on next-gen gumstix stuff now; I think actually that
> the main contenders at this point for next-gen CPU don't have FPUs on
> them.  As someone said to me the other day though "If you know what
> you're doing, fixed point math will always be faster anyway though".
> My reply was "Yeah, but show me the open source lib which saves me
> having to code it myself, man!"  I think the topic was actually MP3
> encoders -- incredibly, there doesn't seem to be a decent fixed-point
> open source MP3 encoder out there.
>
> C
>
> On May 11, 2006, at 10:19 AM, Erik D. Rodriguez wrote:
>
>> Ahh... yeah... You know, that stood out and poked me in the eye
>> when I was considering the Gumstix. For some reason, I didnt pay a
>> great deal of attention... Don' need no stinkin FPU!!! Argh,
>> yeah... Hmmm. That is going to have a pretty big impact even if I
>> dont use iLab. Most my neural network code is floating point. Any
>> chance of a FPU enabled Gum? Either way, no HUGE loss as the Gum is
>> more than capable of dealing with most of the primary functions.
>>
>> ________________________________
>>
>> From: gumstix-users-admin@... on behalf of Craig
>> Hughes
>> Sent: Wed 5/10/2006 12:54 AM
>> To: gumstix-users@...
>> Subject: Re: [Gumstix-users] iLab Toolkit/Visual Processing
>>
>>
>> I haven't used it, but I notice that this is a floating-point
>> library, and since there's no FPU on the gumstix, it's going to run
>> EXTREMELY slowly.  If you want to run code on the gumstix, you
>> should probably look for a fixed-point library instead.
>>
>> C
>>
>> On May 9, 2006, at 10:40 AM, Erik D. Rodriguez wrote:
>>
>>
>>       I am currently working through the object model of the iLab
>> Toolkit (See http://ilab.usc.edu/toolkit/) classes trying to
>> determine which classes I need for my project, and which would work
>> on the Gumstix. Then it struck me, perhaps one of you have used
>> this? (And would be willing to share information/Examples) If not,
>> have any of you used any other visual processing software? I am
>> trying to use an established toolkit to allow my robot a basic (Or
>> better) visual understanding of its environment. iLab looks like a
>> very useful and competent toolkit, but it also appears incredibly
>> processor intensive (And very large!).
>>
>>       I am not really looking for any form of image recognition, but
>> visual path and object detection are a concern. Other things such
>> as object tracking, and path projection would be useful.
>>
>>
>> <winmail.dat>
>
>
>
> -------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services,=20
> security?
> Get stuff done quickly with pre-integrated technology to make your=20
> job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache=20
> Geronimo
> http://sel.as-us.falkag.net/sel?
> cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=3D121642
> _______________________________________________
> gumstix-users mailing list
> gumstix-users@...
> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>
>
> <winmail.dat>



-------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, =
security?
Get stuff done quickly with pre-integrated technology to make your job =
easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache =
Geronimo
http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=3D=
121642
_______________________________________________
gumstix-users mailing list
gumstix-users@...
https://lists.sourceforge.net/lists/listinfo/gumstix-users

>
> Hi Craig,
>
>    Just to check that I'm compiling the kernel correctly, I am using
> the following set of commands to recompile the kernel:
>
> cd <buildroot>/build_arm_nofpu/linux-2.6.15gum/
> cp arch/arm/configs/gumstix_defconfig .config
> make ARCH=3Darm CROSS_COMPILE=3Darm-linux- menuconfig
> make ARCH=3Darm CROSS_COMPILE=3Darm-linux-
>
>    Do these seem reasonable?  It seems I'm able to build a kernel with
> this approach...
>
> thanks,
> -andrew
>

Whoops, nevermind.  I see Dave wrote something in a previous email:

> I normally do the following:

> cd linux-dir
> make ARCH=3Darm menuconfig
> rm arch/arm/boot/compressed/vmlinux
> cd into gumstix-builtroot directory
> make

> I've found that if you remove the vmlinux file then the top level
> makefile will rebuild the kernel using the new config options.