Hello Tim,
In that case you could use the -q option as well and check for 0 return
status, e.g.
x = system("grep -cq \'^S:.*DeviceName\' /proc/bus/usb/devices");
if (x==0) ...; #found
Opening the file for reading and scanning the contents is also an option,
just a little more work on your pa
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Hi,
I've just bought a Freecom FS5, and it doesn't work when I plug it
in to my FC3 laptop. This drive is quite novel in that it is bus-
powered, but uses two usb connectors in order to draw enough power
without breaking the USB spec (according to them).
So, when I plug the second connector in I
Hi Edward,
It has just occured to me that the value system returns is the status of the
call, not the actual count output of grep, which is written to the terminal. So
to be able to access that value should I be able to scanf the output or
something?
Thanks,
Tim
Edward wrote:
> Hello Tim,
>
>
Hi Brian, Edward, and Sven,
Checking out /proc/bus/usb/devices seems to work, so thanks for your help. I
fear it
isn't a complete enough solution, but it will have to do in the meantime. If
anyone
else knows a way to possibly trace the connection back through the joystick
port it
is registere
Hi all,
If I plugin the device usb starts up
I use dhcp to get an IP address for the Ipaq.
This address is assigned (I see messages and a proper ifconfig)
I can ping both ways.
However I am unable to run any ip service (e.g. ssh) . Stracing the apps
shows 'connect' blocking.
I have checked my
Hi,
I've got a problem. My USB 2.0 hard disk installs fine, is picked up by
the ehci driver and transfers files at the advertised, fast data rate.
The only issue is, to get it to do this I have to move my USB mouse
around or it just sits there doing nothing. No errors, just patiently
waiting for m
On Thu, 2004-11-18 at 11:42 -0800, Bradley Remedios wrote:
> On Wed, 17 Nov 2004 19:00:27 -0700, Jed S. Baer <[EMAIL PROTECTED]> wrote:
> > I'll be quite surprised if my BIOS has anything like this available, but
> > I'll look next time I reboot.
>
> All lot of mine have had that option old and ne
On Wed, 17 Nov 2004 19:00:27 -0700, Jed S. Baer <[EMAIL PROTECTED]> wrote:
> I'll be quite surprised if my BIOS has anything like this available, but
> I'll look next time I reboot.
All lot of mine have had that option old and new.
> I don't know what is meant by "legacy" though. Do you (or your
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>From that output it doesn't look like it is plugged in. WHat is the output
of lspci | grep HCI?
On Thu, 18 Nov 2004, [EMAIL PROTECTED] wrote:
> hi everyone,
> I'm having this trouble with a usb pen drive: I can't mount it!! I'm using
> Red
> hat with 2.4.21 kernel, these are the module I've lo
You can use regcomp()/regexec() (regex.h) to do your own parsing instead
of calling grep externally. You could also use libusb to grab the list
of devices and run through them, checking for the joystick. Either way
would work.
However, it doesn't really sound like that would be sufficient witho
Hello Tim,
Sure, you could for example issue the following from your C-program to look
for your device DeviceName:
#include
...
x = system("grep -c \'^S:.*DeviceName\' /proc/bus/usb/devices");
and check if x >= 1.
I don't know if there are any other methods, there might be, and most l
Hi Edward,
Thanks for your quick reply. So can I execute grep from within a C program? Is
there no way you know of using the usb library directly?
Cheers,
Tim
Quoting Edward <[EMAIL PROTECTED]>:
> Hello Tim,
>
> My best bet would be to grep the /proc/bus/usb/devices file for your
> joystick
Hello Tim,
My best bet would be to grep the /proc/bus/usb/devices file for your
joystick device.
HTH
Edward
- Original Message -
From: "Tim Arney" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, November 18, 2004 13:51
Subject: [Linux-usb-users] Detecting unplugged device
Hello
I have Motorola E398 mobile phone with SanDisk TransFlash memory card
and I can not connect it to my Linux box with 2.4.27 kernel. "Regular"
USB memory sticks works fine there.
I tested that this mobile works with 2.6 kernel (2.6.7 from Knoppix
3.6).
Are there any differences in uh
On the 2.4.20-31smp machine the USB disks keep burping up countless I/O
errors, even with Legacy USB support turned off, so I installed Fedora FC3
on a test system and the disks are working just fine. Of course the hardware
is very different (and old) but I'm using the same USB2 card and the same
d
Hi all,
I've written a C/C++ program for controlling a robot with a USB joystick
under linux. For this I'm using the joydev module. Some of our robots
are quite large and fast, and a safety concern is with the joystick
being unplugged, then the robot should stop. As it stands, when the
joystick
hi everyone,
I'm having this trouble with a usb pen drive: I can't mount it!! I'm using Red
hat with 2.4.21 kernel, these are the module I've loaded
Module Size Used byNot tainted
hid15072 0 (unused)
usb-ohci 20064 0 (unused)
ehci-hcd
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