I use duct tape to make sure the cable connection but I cannot be sure about electrostatic interference or power blipping.
I replaced the USB cable and is under test from yesterday. thanks for your prompt reply Davide On 7 Jul 2011, at 18:54, Michael Schippling wrote: > 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 _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
