On Sat, Jan 30, 2010 at 1:25 PM, Paul Bender <pebender@xxxxxxxxxx> wrote:
> I suspect that the device presents itself as 3 USB serial interfaces on one
> USB device. If so, then you should be able to use bInterfaceNumber to set
> the USB serial device number. For example,
>
> KERNEL=="ttyUSB*", SYSFS{serial}=="111", \
> SYMLINK+="ttyLogger1USB$attr{bInterfaceNumber}"
> KERNEL=="ttyUSB*", SYSFS{serial}=="222", \
> SYMLINK+="ttyLogger2USB$attr{bInterfaceNumber}"
> KERNEL=="ttyUSB*", SYSFS{serial}=="333", \
> SYMLINK+="ttyLogger3USB$attr{bInterfaceNumber}"
Yeah, started down that road at the start but no joy.
# udevinfo -a -p /sys/class/tty/ttyUSB0 >/tmp/udevinfo.usb0
# udevinfo -a -p /sys/class/tty/ttyUSB1 >/tmp/udevinfo.usb1
# diff diff /tmp/udevinfo.usb0 /tmp/udevinfo.usb1
8,9c8,9
< looking at device '/class/tty/ttyUSB0':
< KERNEL=="ttyUSB0"
---
> looking at device '/class/tty/ttyUSB1':
> KERNEL=="ttyUSB1"
11c11
< SYSFS{dev}=="188:0"
---
> SYSFS{dev}=="188:1"
13,14c13,14
< looking at parent device
'/devices/pci0000:00/0000:00:1d.7/usb1/1-1/1-1.1/1-1.1:1.0/ttyUSB0':
< ID=="ttyUSB0"
---
> looking at parent device '/devices/pci0000:00/0000:00:1d.7/usb1/1-1/1-1.1/1-1.1:1.0/ttyUSB1':
> ID=="ttyUSB1"
#
There is a bInterfaceNumber in
/devices/pci0000:00/0000:00:1d.7/usb1/1-1/1-1.1/1-1.1:1.0 under which
I find ttyUSB0/, ttyUSB1/ and ttyUSB2/. I think the USB
implementation on this logger just didn't take what I'm trying to do
into consideration.
Thanks,
Paul
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