Bifferboard Google Group

Re: Newbie problem

2010-03-16T22:55:45Z

I had a chance to go through the logs you posted. The packets show
that the ATTN packet is sent to the board, it's received, and a
response sent, then the PC sends 16 packets of information (512 bytes
in each) to make up one 8k programming chunk. Then the PC issues an
md5 request, and the board responds with the md5 of the 8k already

Re: Newbie problem

2010-03-16T20:50:40Z

Tried the SVN version that you link to, but the result is the same
unfortunately.
Yeah, I get the feeling I'm close as well. Every time I power it down
and take the USB stick to another machine, it claims it was uncleanly
mounted. A fsck sorts it out in no time, but it also indicates that
the FS _is_ getting mounted at some point.

Re: [bifferboard] Re: Is it possible to control the USB devices power by software?

2010-03-16T19:33:59Z

OK, mediaplayer arrived, tested it with the software solution
but it didn't work!
So I cut an USB cable (5VCD line only) to test if removing
it would switch the device back to his mediaplayer function, and
it did! So, back to an electronic solution! It only uses 50mA from
the usb 5VCD line, so BJT transistor should be enough.

Re: Newbie problem

2010-03-16T18:11:29Z

Before you give up, you can try the script here:
[link]
It seems like it's very close to working, so not sure why you're
having problems.
Do you have a 64-bit CPU and/or operating system?
Biff.

Re: [bifferboard] Re: Is it possible to control the USB devices power by software?

2010-03-16T17:44:31Z

I was thinking the same thing as markp, should be useful for some nice bb
projects,
it's cleaner then hacking a hub to get the power line controlled, and pretty
slim!
Regards,
Nelson.

Re: Newbie problem

2010-03-16T17:46:27Z

Hi Biff,
The machine just doesn't have eth0 :-) It used to be a firewire
interface, and I never got around to renaming the interfaces. The
network config is just a regular dhcp client pulling info over a GigE
link from another Linux server. I've tried setting the address
statically and using a crossover cable, but the same happens.

Re: Is it possible to control the USB devices power by software?

2010-03-16T17:24:06Z

Is this something you'd consider making available as a kit, or at
least having PCBs made for self-assembly with a parts list?

Re: Newbie problem

2010-03-16T14:27:28Z

Regarding flashing, first thing I notice is you're using eth1. So
what's on eth0? What's the network config?
Can you run tcpdump on another machine and see what's going on while
you try to flash? Maybe even run it in another window on the same
machine?
It's recommended that you get a serial cable, because resolving

Newbie problem

2010-03-16T14:01:58Z

Morning all,
Apologies if this turns up twice. I posted via email at 11:34, it was
accepted by Googles mail servers, but has since failed to appear
anywhere. Maybe this web interface will work...
I have a few issues with a 8MB Bifferboard that I have. First off, I
can't flash any form of kernel to it. I'm using the bzImage from

Re: [bifferboard] Re: Is it possible to control the USB devices power by software?

2010-03-16T13:40:49Z

Yeah it's my design. No rocket science involved tho it's fairly trivial :-)
Image courtesy of Eagle3D !
Michel

Re: [bifferboard] Re: Is it possible to control the USB devices power by software?

2010-03-16T00:10:55Z

Just made a quick test in my desktop with Ubuntu for Ernst solution:
[link]
Plugged my external harddrive (no mediaplayer to test yet) into the
desktop and run lsusb:
...
Bus 001 Device 005: ID 04cf:8818 Myson Century, Inc. USB2.0 to ATAPI Bridge

Re: [bifferboard] Re: Is it possible to control the USB devices power by software?

2010-03-15T22:36:27Z

Wow, now that's class! Is this your development? Sure looks nice!
Nelson.

Re: [bifferboard] Re: Is it possible to control the USB devices power by software?

2010-03-15T18:36:28Z

Made that last year : [link]
It's what I call a "husbhub" aka Haltable USB Hub; one of the port on
the HUB IC is used by a FT245 that drives the pins that power the 3
other "normal" ports. I only made one of these but it's been working
ever since...
Michael

Re: [bifferboard] Re: Is it possible to control the USB devices power by software?

2010-03-15T17:27:51Z

Hi Andy,
I don't have the mediaplayer yet (will receive it tomorrow), been doing some
tests
with an USB external harddrive, trying to speed up things before final
tests.
My friend specifically requested a NO-HUB solution to be as minimalist as
possible,
that's one of the reasons for buying him a 2 USB port bifferboard version ;)

Re: [bifferboard] R19 hack

2010-03-15T16:54:26Z

It means if you haven't done the R19 hack (and so your JTAG-pins
aren't in GPIO mode), you can still see the logic analyser doing
*something*, by pressing the button... :)
Lurch