Re: [Gumstix-users] Pinit failing on Compact Flash, any good solution/u-boot update available?

[Arnar Birgisson <arnarbi@gm...>]

On 3/15/07, Craig Hughes <craig@...> wrote:
> I'm looking into this right now -- looks like the uboot CF code is
> not initializing the CPLD right on the wifi-CF board.  I thought I'd
> implemented that, but apparently not...

I'm very glad to hear you are on to it. :o)

Arnar

[Gumstix-users] ttys2 = bad file descriptor

[Chris Parker <parkerca@ie...>]

	Hey all.  I was testing a serial i/o program that I am writing  
today, and I killed it with a control-C.  The next time I went to run  
it, I got the error "Bad file descriptor" when I tried to write to  
ttyS2 (I was able to open a file descriptor for ttyS2, though...).   
Rebooting the gumstix made no difference.  I should point out that I  
was being stupid and running my code as root.  How should I fix  
this?  There is the brute-force solution of reflashing the  
filesystem, but I would prefer a more elegant solution, if there is one.

thanks,
-Chris

Re: [Gumstix-users] Using Java to read 60-pin connector

[<fokumdt@it...>]

To follow up on my question from yesterday, has anyone used RXTX on the
gumstix?

Daniel

> Is it possible to use JamVM+Classpath to read either the SPI or I2C pins
> on the 60 pin connector between the gumstix and the robostix?
>
> Thanks in advance for any help.
>
> Daniel
>

Re: [Gumstix-users] Pinit failing on Compact Flash, any good solution/u-boot update available?

[Craig Hughes <craig@gu...>]

I'm looking into this right now -- looks like the uboot CF code is  
not initializing the CPLD right on the wifi-CF board.  I thought I'd  
implemented that, but apparently not...

C

On Mar 11, 2007, at 4:05 PM, Arnar Birgisson wrote:

> Hi there,
>
> On 3/11/07, Stephen Morris <morris@...> wrote:
>> It appears from the discussion that this might work properly with  
>> smaller CF
>> cards someone said that it did for 128MB cards.
>>
>> Mine is a 2GB and has problems.
>>
>> It's also been said, that they believe that this has been fixed in  
>> later
>> version of u-boot. I'm running 1.1.4.
>
> I tried installing the latest u-boot from the gumstix buildroot, which
> is version 1.1.4.
>
> When I do "pinit on" I see this:
> SunDisk SDP 5/3 0.6
>             Fixed Disk Card
>             IDE interface
>             [silicon] [unique] [single] [sleep] [standby] [idle]  
> [low power]
> Bus 0: OK
>   Device 0: Model:  Firm:  Ser#: @
>             Type: Removable Hard Disk
>             Capacity: 3424.0 MB = 3.3 GB (7012384 x 512)
>
> which is completely wrong. I have a wifistix-cf with a 64mb sandisk
> card. When I try "fatls ide 0" I just get "unable to use ide 0:1 for
> fatls".
>
> I'm not sure if this is the same problem or not, just wante'd to  
> throw it in.
>
> Arnar
>
> ---------------------------------------------------------------------- 
> ---
> Take Surveys. Earn Cash. Influence the Future of IT
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Re: [Gumstix-users] pxaregs patch

[Grahame Jordan <gbj@th...>]

Hi Craig,

This one bit me in the bum again.
The munmap is unmapping from 0 not map causing memory to eventually get 
exhausted. Hard to find.
The fd was global also. Not necessary and confusing.

Could you apply this patch?

Cheers

Grahame Jordan


Craig Hughes wrote:
> After converting the line endings to unix, the patch still fails to  
> apply:
>
> craig@... ~/code/gumstix/trunk $ make pxaregs
> bzcat /home/craig/code/gumstix/trunk/dl/pxaregs-1.14.tar.bz | tar -C / 
> home/craig/code/gumstix/trunk/build_arm_nofpu   -xf -
> toolchain/patch-kernel.sh /home/craig/code/gumstix/trunk/ 
> build_arm_nofpu/pxaregs-1.14 package/pxaregs pxaregs-*.patch
>
> Applying pxaregs-i2c.patch using plaintext:
> patching file pxaregs.c
>
> Applying pxaregs-memmap.patch using plaintext:
> patching file pxaregs.c
> Hunk #1 FAILED at 20.
> Hunk #2 succeeded at 1766 (offset -4 lines).
> Hunk #3 succeeded at 1785 (offset -4 lines).
> Hunk #4 succeeded at 1826 (offset -4 lines).
> Hunk #5 succeeded at 1901 (offset -4 lines).
> Hunk #6 succeeded at 1914 (offset -4 lines).
> Hunk #7 succeeded at 1932 (offset -4 lines).
> Hunk #8 succeeded at 1947 (offset -4 lines).
> Hunk #9 succeeded at 1980 (offset -4 lines).
> 1 out of 9 hunks FAILED -- saving rejects to file pxaregs.c.rej
> Patch failed!  Please fix pxaregs-memmap.patch!
> make: *** [/home/craig/code/gumstix/trunk/build_arm_nofpu/ 
> pxaregs-1.14/pxaregs.c] Error 1
>
>
>
> On Oct 29, 2006, at 8:55 PM, Grahame B. Jordan wrote:
>
>   
>> Please use this one.
>>
>> Thanks
>>
>> Grahame Jordan
>> <pxaregs-memmap.patch>
>> ---------------------------------------------------------------------- 
>> ---
>> 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?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> gumstix-users mailing list
> gumstix-users@...
> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>   

Re: [Gumstix-users] audiostix 2 serial

[Alex Haack <haackbus@gm...>]

What voltage converter chip would you recommend from going  5 volts to
3.3volts.

On 3/15/07, Alex Haack <haackbus@...> wrote:
>
> It is a Parallax Inc RFID reader running at 2400bps baud
>
> On 3/15/07, Dave Hylands <dhylands@...> wrote:
> >
> > Hi Alex,
> >
> > On 3/15/07, Alex Haack <haackbus@... > wrote:
> > > The audiostix 2 have 3.3v logic level serial interfaces, so when
> > hooking up
> > > a 5v logic level serial device, do I need to use a converter, or
> > convert the
> > > 5v to 3.3v.  If I do need to use a converter, how could I make one.
> >
> > You definitely need a converter.
> >
> > The 3.3v Tx from the gumstix going into the 5v Rx may work fine with
> > no conversion.
> >
> > Depending on the baud rate, you might be able to get away with a
> > resistor divider network in the other direction.
> >
> > There are lots of voltage conversion chips available, it just depends
> > on how much you want to spend, how big you want it, and how much extra
> > circuitry you want.
> >
> > --
> > Dave Hylands
> > Vancouver, BC, Canada
> > http://www.DaveHylands.com/
> >
> >
> > -------------------------------------------------------------------------
> > Take Surveys. Earn Cash. Influence the Future of IT
> > Join SourceForge.net 's Techsay panel and you'll get the chance to share
> > your
> > opinions on IT & business topics through brief surveys-and earn cash
> >
> > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> > _______________________________________________
> > gumstix-users mailing list
> > gumstix-users@...
> > https://lists.sourceforge.net/lists/listinfo/gumstix-users
> >
>
>

Re: [Gumstix-users] Dead Gumstix

[<robert@in...>]

Quoting "(s) Laurence Broadbent" <laurence.broadbent@...>:

> I am in my final year of university and trying to get a vision application
> running on my Gumstix. My board seemed to be running fine earlier and has
> suddenly just stopped. I was wandering if anyone had any ideas of which
> signals I can check to see if the board is still alive or if (as I fear maybe
> the case) it needs sending back to Gumstix inc.

Laurence, sorry to hear that. The only thing I can think of is to
stick a Tweener board on your Gumstix and monitor the boot process
via a serial terminal (e.g. HyperTerminal on Windows or Minicom on Linux).

Sorry I can't be more helpful,

Robert

[Gumstix-users] New schematics and layouts

[Gordon Kruberg <gordon@gu...>]

We will have 2 new versions of the waysmall and breakout boards in order 
to bring out the PXA270 signals for the extra 2 LCD lines and to utilize 
the SYS_EN line for power management.  To place these in the right 
family of boards on pubs, I created new directories.  (Dave H.,  I hope 
this nesting doesn't break your recently published script for 
downloading them all)   In any case, if anyone has some last-minute 
feedback for us on the boards, now would be the time!

Check them at:
http://pubs.gumstix.com/boards/BREAKOUT/VX/
http://pubs.gumstix.com/boards/WAYSMALL/VX/


Gordon

Re: [Gumstix-users] Kernel

[<timcrawford@co...>]

Hi Matthew,

> is it possible to have a different version of Linux on the Gumstix and
> where do i change it

Yes, you can change the minor version.  http://www.kernel.org

Tim

 -------------- Original message ----------------------
From: Matthew Hickey <Matthew_Hickey/Microdea%IDEA_DATA@...>
> is it possible to have a different version of Linux on the Gumstix and
> where do i change it
>  
>  
> 
> Regards,
> 
> Matthew Hickey
> 
> Project Manager
> 
> Microdea Inc.
> 
> Tel (905) 881-6071 x225
> 
> Fax (905) 881-5943
> 
> mhickey@...
> 
> Have you signed up for the Synergize Users Forum?
> 
> http://www.microdea.com/forum
> 
>  

[Gumstix-users] Kernel

[Matthew Hickey <Matthew_Hickey/Microdea%IDEA_DATA@Microdea.com>]

is it possible to have a different version of Linux on the Gumstix and
where do i change it
 
 

Regards,

Matthew Hickey

Project Manager

Microdea Inc.

Tel (905) 881-6071 x225

Fax (905) 881-5943

mhickey@...

Have you signed up for the Synergize Users Forum?

http://www.microdea.com/forum

 

Re: [Gumstix-users] audiostix 2 serial

[Alex Haack <haackbus@gm...>]

It is a Parallax Inc RFID reader running at 2400bps baud

On 3/15/07, Dave Hylands <dhylands@...> wrote:
>
> Hi Alex,
>
> On 3/15/07, Alex Haack <haackbus@...> wrote:
> > The audiostix 2 have 3.3v logic level serial interfaces, so when hooking
> up
> > a 5v logic level serial device, do I need to use a converter, or convert
> the
> > 5v to 3.3v.  If I do need to use a converter, how could I make one.
>
> You definitely need a converter.
>
> The 3.3v Tx from the gumstix going into the 5v Rx may work fine with
> no conversion.
>
> Depending on the baud rate, you might be able to get away with a
> resistor divider network in the other direction.
>
> There are lots of voltage conversion chips available, it just depends
> on how much you want to spend, how big you want it, and how much extra
> circuitry you want.
>
> --
> Dave Hylands
> Vancouver, BC, Canada
> http://www.DaveHylands.com/
>
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share
> your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> gumstix-users mailing list
> gumstix-users@...
> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>

Re: [Gumstix-users] audiostix 2 serial

[Dave Hylands <dhylands@gm...>]

Hi Alex,

On 3/15/07, Alex Haack <haackbus@...> wrote:
> The audiostix 2 have 3.3v logic level serial interfaces, so when hooking up
> a 5v logic level serial device, do I need to use a converter, or convert the
> 5v to 3.3v.  If I do need to use a converter, how could I make one.

You definitely need a converter.

The 3.3v Tx from the gumstix going into the 5v Rx may work fine with
no conversion.

Depending on the baud rate, you might be able to get away with a
resistor divider network in the other direction.

There are lots of voltage conversion chips available, it just depends
on how much you want to spend, how big you want it, and how much extra
circuitry you want.

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

[Gumstix-users] audiostix 2 serial

[Alex Haack <haackbus@gm...>]

The audiostix 2 have 3.3v logic level serial interfaces, so when hooking up
a 5v logic level serial device, do I need to use a converter, or convert the
5v to 3.3v.  If I do need to use a converter, how could I make one.

Thanks,

Alex Haack

[Gumstix-users] buildroot eabi unrecognized

[Nate Koenig <nkoenig@ro...>]

Hello,

I'm having trouble compile the gumstix buildroot. I've download the
source from svn, used make defconfig, and make. I get an error saying
"unrecognize option '-meabi=4'. Any suggestions? I've pasted in the
relevant portion of the output below.

Thanks,

-nate

gcc   -g -O2 -DIN_GCC -DCROSS_COMPILE  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-Wno-variadic-macros -Wold-style-definition -Wmissing-format-attribute
   -DHAVE_CONFIG_H -I. -I.
-I/home/nate/work/irobot/create/gumstix-buildroot/toolchain_build_arm_nofpu/gcc-4.1.1/gcc
-I/home/nate/work/irobot/create/gumstix-buildroot/toolchain_build_arm_nofpu/gcc-4.1.1/gcc/.
-I/home/nate/work/irobot/create/gumstix-buildroot/toolchain_build_arm_nofpu/gcc-4.1.1/gcc/../include
-I/home/nate/work/irobot/create/gumstix-buildroot/toolchain_build_arm_nofpu/gcc-4.1.1/gcc/../libcpp/include
    -c insn-attrtab.c \
          -o insn-attrtab.o
/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../i686-pc-linux-gnu/bin/as:
unrecognized option `-meabi=4'
make[2]: *** [coverage.o] Error 1
make[2]: *** Waiting for unfinished jobs....
/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../i686-pc-linux-gnu/bin/as:
unrecognized option `-meabi=4'
make[2]: *** [final.o] Error 1
/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../i686-pc-linux-gnu/bin/as:
unrecognized option `-meabi=4'
make[2]: *** [insn-attrtab.o] Error 1
make[2]: Leaving directory
`/home/nate/work/irobot/create/gumstix-buildroot/toolchain_build_arm_nofpu/gcc-4.1.1-initial/gcc'
make[1]: *** [all-gcc] Error 2
make[1]: Leaving directory
`/home/nate/work/irobot/create/gumstix-buildroot/toolchain_build_arm_nofpu/gcc-4.1.1-initial'
make: *** [/home/nate/work/irobot/create/gumstix-buildroot/toolchain_build_arm_nofpu/gcc-4.1.1-initial/.compiled]
Error 2

[Gumstix-users] Dead Gumstix

[\(s\) Laurence Broadbent <laurence.broadbent@st...>]

Hi=20
I am in my final year of university and trying to get a vision =
application running on my Gumstix. My board seemed to be running fine =
earlier and has suddenly just stopped. I was wandering if anyone had any =
ideas of which signals I can check to see if the board is still alive or =
if (as I fear maybe the case) it needs sending back to Gumstix inc. Any =
Help would be much appreciated as this is an extremely urgent matter( my =
project has to be finished a week wednesday).
Many Thanks

Laurence=20

Re: [Gumstix-users] problem compiling cross-compile toolchain

[Dave Hylands <dhylands@gm...>]

Hi Timo,

> I'm having trouble compiling working buildroot with cross compiler for Gumstix.
> I successfully compiled revision 1160, but after installing image wlan went
> missing. When I'm trying to compile revision 1078 (which came with our gumstix
> device, and has working wlan) it fails with following error:

See:
<http://article.gmane.org/gmane.linux.distributions.gumstix.general/20058>;
for a history of revisions relating to wifi.

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

Re: [Gumstix-users] Let's Fix the Sound..

[Hennie van Zyl <hpvanzyl@gm...>]

On 15/03/07, Tony Cantor <tony.cantor@...> wrote:
>
> On 3/15/07, Dave Hylands <dhylands@...> wrote:
> >
> > Something that would help alot would be to run strace on the version
> > that fails and run strace on the version that works, capturing the
> > output in both cases.
> >
> >
> do people have strace working on gumstix? i tried to compile it in in order
> to try and track down the alsa bugs that ive been trying to fix, but it
> wouldnt compile. i managed to get it to compile in after i asked for help
> here on the list, but unfortunately strace would crash everytime i ran it.
>
>  tony
>
Adding strace works on release 1183, however trying it on release 1185
gives the following error: (hopefully it helps..)

syscall.c: In function 'get_scno':
syscall.c:1082: warning: passing argument 4 of 'ptrace' makes integer
from pointer without a cast
syscall.c:1111: warning: passing argument 4 of 'ptrace' makes integer
from pointer without a cast
syscall.c: In function 'syscall_fixup':
syscall.c:1372: warning: unused variable 'pid'
syscall.c: In function 'syscall_enter':
syscall.c:1950: warning: unused variable 'pid'
syscall.c: In function 'trace_syscall':
syscall.c:2473: error: '__NR_socketcall' undeclared (first use in this function)
syscall.c:2473: error: (Each undeclared identifier is reported only once
syscall.c:2473: error: for each function it appears in.)
syscall.c:2477: error: '__NR_ipc' undeclared (first use in this function)
make[2]: *** [syscall.o] Error 1

hennie

Re: [Gumstix-users] Where is my memory going

[Alexandre Pereira Nunes <alex@om...>]

Jeff Stoner escreveu:
> On Tue, 13 Mar 2007, Alexandre Pereira Nunes wrote:
>
> Some things to be aware of...
>
>   
>> df -h /tmp shows 0 bytes, even tough there are 600k in use... but du -h
>> /tmp seems to get close enough...
>>     
>
> df is giving the information stored in the file system, du is giving the 
> information deduced from traversing the file system and collecting the 
> metadata. How is this different?
df on /tmp asks tmpfs (in fact, I think that since gumstix lacks support
for swap, ramfs is used instead), and it's implementation is incomplete
is not collecting the necessary data.
>  df looks at the freelist and reports the 
> number of free blocks in the filesystem. du, when traversing the 
> filesystem, counts the blocks in use but doesn't count things like 
> directory entries, special files (named pipes) or device files.
>   
.. which takes memory from the tmpfs, but aren't correctly computed,
which is irrelevant for that specific measurement I was refering too, at
least on my case, since I only had one subdirectory and no special
nodes. The user who started the thread may have to take that in mind,
tough...

- Alexandre

[Gumstix-users] problem compiling cross-compile toolchain

[Timo Aarnipuro <timoaarn@ma...>]

Hello

I'm having trouble compiling working buildroot with cross compiler for Gumstix.
I successfully compiled revision 1160, but after installing image wlan went
missing. When I'm trying to compile revision 1078 (which came with our gumstix
device, and has working wlan) it fails with following error:

toolchain/getter_script.sh -P /home/roomba/src/src2/gumstix-buildroot/dl
http://files.gumstix.com/cf8385-5.0.16.p0-26306.tbz
--16:03:24--  http://files.gumstix.com/cf8385-5.0.16.p0-26306.tbz
           =>
`/home/roomba/src/src2/gumstix-buildroot/dl/cf8385-5.0.16.p0-26306.tbz'
Resolving files.gumstix.com... 216.139.227.50
Connecting to files.gumstix.com|216.139.227.50|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
16:03:25 ERROR 404: Not Found.

Retrying from gumstix alternate site...
--16:03:25--  http://files.gumstix.com/cf8385-5.0.16.p0-26306.tbz
           =>
`/home/roomba/src/src2/gumstix-buildroot/dl/cf8385-5.0.16.p0-26306.tbz'
Resolving files.gumstix.com... 216.139.227.50
Connecting to files.gumstix.com|216.139.227.50|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
16:03:25 ERROR 404: Not Found.

make: ***
[/home/roomba/src/src2/gumstix-buildroot/dl/cf8385-5.0.16.p0-26306.tbz] Error
1




Gumstix with revision 1078:
# pccardctl ls
Socket 0 Bridge:        [pxa2xx-pcmcia]         (bus ID: pxa2xx-pcmcia)
Socket 0 Device 0:      [mcf25]         (bus ID: 0.0)
Socket 1 Bridge:        [pxa2xx-pcmcia]         (bus ID: pxa2xx-pcmcia)

With revision 1160 pccardctl reports [no driver] instead of [mcf25]


Any help appreciated. And please ask if you need more information.

-Timo Aarnipuro
 Research assistant
 University of Oulu - Finland

Re: [Gumstix-users] Text mode lcd, pls help me Michael Petchkovsky

[Peter Hodgson <peter.hodgson@du...>]

Thanks for replying Michael,
It seems due to popular demand we'll stay on list for this :)
> On 3/14/07, Daniel O'Shea <dan@...> wrote:
> > ...it would be great if you could keep the discussion on-list, I for one
> > would also be very interested in this!
> 
> me too, please keep the discussion on list

I'm currently at the stage where I have the screen connected and the
framebuffer set up built into the kernel. I've redirected the output of
a python curses script to /dev/fb0 which writes noise from the top left
of the screen to the bottom right at which point the script fails with;
error no space left on device. I guess this is because each char from
curses is being written to half a pixel? My question is how do I go
about compiling into the kernel an 8x16 font like you said, and how do I
configure it so that the fb is treated like a tty and a char sent to it
will be handled properly.

Thanks very much for your help, your still subscribing is very much
appreciated,

Peter

Michael Petchkovsky wrote:
> Hi Peter, yup still subscribing and I cast my eye over the list from
> time to time, though my gumstix project has fallen by the wayside at the
> moment. (I'll resurrect it at some stage ... )
> 
> Sounds like you're almost there, feel free to email me, let me know
> where you're up to and what you're aiming for. I'll see if I can dig out
> some helpful info.
> 
> Text mode is pretty neat on that little screen and not too tricky to set
> up.
> 
> Cheers, Michael.
> 
> On Thu, 2007-03-15 at 00:21 +0000, Peter Hodgson wrote:
> 
>>Hi,
>>I've been trying to use a Sony ACX705AKM to display some simple curses
>>type text output but am struggling. I noticed in the mailing list
>>archives that someone else has done a similar thing and were offering
>>details of how to configure the kernel to show text (I've got the screen
>>running, and it changes when I cat stuff to it). This email was from
>>Michael Petchkovsky back in Jan though. Are you still around Michael?
>>I'd be very grateful for that info.
>>Thanks very much,
>>
>>Peter

Re: [Gumstix-users] Let's Fix the Sound..

[Tony Cantor <tony.cantor@gm...>]

On 3/15/07, Dave Hylands <dhylands@...> wrote:
>
>
> Something that would help alot would be to run strace on the version
> that fails and run strace on the version that works, capturing the
> output in both cases.
>
> do people have strace working on gumstix? i tried to compile it in in
order to try and track down the alsa bugs that ive been trying to fix, but
it wouldnt compile. i managed to get it to compile in after i asked for help
here on the list, but unfortunately strace would crash everytime i ran it.

tony

[Gumstix-users] SANE & LIBUSB

[Matthew Hickey <Matthew_Hickey/Microdea%IDEA_DATA@Microdea.com>]

When the compiling libusb within the buildroot, it seems that it only
copies libusb*.so* and does not actually install into the $(TARGET_DIR)
with all files not just the libraries
this has a big effect on Compiling Sane within the buildroot, because sane
(for usb support) requires that the usb.h file is present in the
$(TARGET_DIR)/usr/include
also 
it would be nice to have the scanner module included
i've tried to add the device driver from menuconfig for both busybox and
the kernel,
and since libusb replaced the usb kernel module in 2.6.18 i'm kinda up the
creek
 

Regards,

Matthew Hickey

Project Manager

Microdea Inc.

Tel (905) 881-6071 x225

Fax (905) 881-5943

mhickey@...

Have you signed up for the Synergize Users Forum?

http://www.microdea.com/forum

 

Re: [Gumstix-users] Let's Fix the Sound..

[Dave Hylands <dhylands@gm...>]

Hi Henne,

On 3/15/07, Hennie van Zyl <hpvanzyl@...> wrote:
> Hi to Craig and all other savvy users.
>
> As you all know there is a problem playing audio on the newer gumstix
> buildroot releases. I have tested it and the problem creeps in at the
> 1183 -> 1185 release change. This is at the same time that the change
> from gcc3.4.5 to gcc4.1.1 kicks in. The error is still :
> # madplay sine1k.mp3
> MPEG Audio Decoder 0.15.2 (beta) - Copyright (C) 2000-2004 Robert Leslie et al.
> output: ioctl(SNDCTL_DSP_SYNC): Invalid argument

Something that would help alot would be to run strace on the version
that fails and run strace on the version that works, capturing the
output in both cases.

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

[Gumstix-users] Just To Say Hi

[Lorelei <anneojkjiky@h2...>]

Re: [Gumstix-users] Audio Application

[Christopher Whitt <christopher@ja...>]

Hey, guys.  The NXP (Philips) UCB1400 audio codec the gumstix uses will
normally route the mic preamp to BOTH left and right ADC channels if the
mic input is selected in software.  This might explain why you are
getting the same audio on both channels.  I would guess that you can use
the regular audio mixer application in linux to tell the codec to use
line-in instead of mic-in.  For more detail see section 9 of the
datasheet at
http://www.nxp.com/acrobat_download/datasheets/UCB1400-02.pdf=20

=20

Remember, if you select line-in you will probably get two channels, but
the codec's analog microphone pre-amplification circuitry will be
switched out of the signal path, so you will likely get EXTREMELY low
level, possibly distorted sound (or quite likely nothing at all) from a
microphone, unless you use an external preamp.  This has nothing to do
with gumstix, but would be the same for any PC sound card.

=20

Good luck,

Christopher Whitt

Project Engineer

=20

JASCO Research Limited

Halifax NS Canada B3A 3J6

(902)405-3336 x1008

(902)405-3337 fax

________________________________

From: gumstix-users-bounces@...
[mailto:gumstix-users-bounces@...] On Behalf Of Joey
Degges
Sent: Wednesday, March 14, 2007 22:14
To: General mailing list for gumstix users.
Subject: Re: [Gumstix-users] Audio Application

=20

Justin,

I have actually been testing stereo recording more in depth lately and I
have noticed something similar to what you are describing. I have 3
different stereo splitters, but I only know the sepcs on one of them.=20

Two of the three get no data when either both left and right mics are
plugged in, or when just the left or the right is plugged in. But with
the third splitter I get two channels, both with the exact same data. I
think it may be able to record in stereo but maybe the wiring of the
splitter/mics is faulty. From what I gather it merges all data from the
left channel with all data from the right channel resulting in two
channels, each filled with both left AND right data.=20

Sorry if that is a little confusing.

For example I said "testing one two three" into the left mic, and
"testing 10 9 8" into the right mic. When I put the resulting file
through audacity I found that there are two channels, but each contains
"testing one two three testing 10 9 8".=20

Again this phenomena only happens with one of the three splitters I
have, with the other two I get no data whatsoever. Maybe the port is not
supplying enough power to power both mics? Maybe the wiring of my mics
is bad? Maybe the wiring inside the splitter is bad? Maybe the gumstix
audio in jack does something weird with the channels? Maybe it even has
to do with the way brec records audio?=20

That configuration you have does look similar to what I have except I
don't use the python package.

Joey

=20