Are you sure that the device didn't actually disconnect? Maybe the cable got wiggled, power blipped, or something?
I can't think of an easy way to debug this since it could be anything from a bad cable to buggy software. Probably the only workaround is to have the USB client attempt to reconnect whenever it dies. MS [email protected] wrote: > Hi, > > I'm facing a very nasty problem with the USB using Blip and telosb. > I've a small testbed set up where few telosb report data to a telosb > IPBaseStation connected by USB to a laptop running Ubuntu 10. > > The ip-driver is running and the tun0 interface works perfectly until, for > some reason, the USB disconnects!!! > > Happened many times already and always after a random period of time (few > hours or few days). > > Has anybody of you had the same problem? > > Please, have a look to my dmesg: > > [ 62.583495] device tun0 entered promiscuous mode > [181469.402683] hub 1-0:1.0: port 1 disabled by hub (EMI?), re-enabling... > [181469.403667] usb 1-1: USB disconnect, address 2 > [181469.406021] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now > disconnected from ttyUSB0 > [181469.406654] ftdi_sio 1-1:1.0: device disconnected > [181469.627963] usb 1-1: new full speed USB device using ohci_hcd and address > 3 > [181469.777676] usb 1-1: configuration #1 chosen from 1 choice > [181469.783296] ftdi_sio 1-1:1.0: FTDI USB Serial Device converter detected > [181469.784171] usb 1-1: Detected FT232BM > [181469.785634] usb 1-1: FTDI USB Serial Device converter now attached to > ttyUSB1 > > > As you can see the USB went off after more than 2 days of activity! > I suspect it's related to the USB hardware rather than applications but, so > far, it happens to me only using telosb. > > I google it a bit but I have not found solution yet > > Any comment is more than welcome > > > Many thanks > > > Davide > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
