On Mon, Oct 25, 2010 at 1:58 PM, Daniel Golle <daniel.go...@gmail.com> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > hi everybody! > for my current project i need to reliably identify/distinguish several > USB-to-serial devices connected to a 4-port hub. in a desktop > environment, i would use hal over dbus (or in future probably device-kit > over dbus) to select the device by > vendor/product/serialno/connected-port. i was thinking of using udev to > create symbolic links, but even udev seems like taking a sledgehammer to > crack a nut to me... > my problem is that, depending on whether i cold-start or reboot the > system (a fon2202 btw), the different USB-to-serial gadgets end up to be > different ttyUSBx devices. especially the huawei 3g/umts wwan seems to > take a greatly varying amount of time before it becomes ready, so on a > reboot it becomes visible to the system as ttyUSB0 & ttyUSB1, in a > cold-start it's ttyUSB2 & ttyUSB3... > what way do you suggest to solve the problem?
Address the devices by going into the /dev/serial/by-id : zoo...@buzek /dev/serial/by-id [18]$ l total 0 lrwxrwxrwx 1 root root 13 2010-10-25 09:17 usb-Dell_Dell_Wireless_5530_HSPA_Mobile_Broadband_Minicard_Device_3558620231349960-if01 -> ../../ttyACM0 lrwxrwxrwx 1 root root 13 2010-10-25 09:17 usb-Dell_Dell_Wireless_5530_HSPA_Mobile_Broadband_Minicard_Device_3558620231349960-if03 -> ../../ttyACM1 lrwxrwxrwx 1 root root 13 2010-10-25 09:17 usb-Dell_Dell_Wireless_5530_HSPA_Mobile_Broadband_Minicard_Device_3558620231349960-if09 -> ../../ttyACM2 The path there should be unique. Try to insert all the adaptors, and send me the output of "ls -l /dev/serial/by-id". -- Benjamin Henrion <bhenrion at ffii.org> FFII Brussels - +32-484-566109 - +32-2-4148403 "In July 2005, after several failed attempts to legalise software patents in Europe, the patent establishment changed its strategy. Instead of explicitly seeking to sanction the patentability of software, they are now seeking to create a central European patent court, which would establish and enforce patentability rules in their favor, without any possibility of correction by competing courts or democratically elected legislators." _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
