On Wednesday 11 July 2007 11:40:02 am John Griessen wrote: > I am having troubles starting a computer with a telosb running > BaseStation attached, and also sometimes plugging the tmote in via USB. > If a program that uses the radio transceiver is running I can get hangs. > > Does anyone know a problem with the FTDI USB chip and xubuntos, (ubuntu > linux, linux kernel), or should I be swapping desktop computer hardware? > > brltty package is not installed. > Kernel is Linux version 2.6.17-10-generic ([EMAIL PROTECTED]) (gcc version > 4.1.2 20060928 (prerelease) (Ubuntu 4.1.1-13ubuntu5)) #2 SMP Tue Dec 5 > 22:28:26 UTC 2006 (Ubuntu 2.6.17-10.34-generic)
I've just this week seen this behavior on an x86 PC running Ubuntu Feisty. The usb hub hardware in the PC will reset the mote's port, which causes it to 'jump' to a new tty device because the original one remains held open by the host software that was talking to the mote. It can take 1-3 days before it happens. ---- Jul 13 08:17:31 stevex2 kernel: [258325.704000] hub 1-0:1.0: port 5 disabled by hub (EMI?), re-enabling... Jul 13 08:17:31 stevex2 kernel: [258325.704000] usb 1-5: USB disconnect, address 9 Jul 13 08:17:31 stevex2 kernel: [258325.708000] ftdi_sio 1-5:1.0: device disconnected Jul 13 08:17:31 stevex2 kernel: [258325.884000] usb 1-5: new full speed USB device using ohci_hcd and address 12 Jul 13 08:17:31 stevex2 kernel: [258326.104000] usb 1-5: configuration #1 chosen from 1 choice Jul 13 08:17:31 stevex2 kernel: [258326.108000] ftdi_sio 1-5:1.0: FTDI USB Serial Device converter detected Jul 13 08:17:31 stevex2 kernel: [258326.108000] drivers/usb/serial/ftdi_sio.c: Detected FT232BM Jul 13 08:17:31 stevex2 kernel: [258326.108000] usb 1-5: FTDI USB Serial Device converter now attached to ttyUSB4 ---- I'm planning on posting to the list if I can track down this problem and it doesn't turn out to be defective USB hardware or something... _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
