From: Steve S. <sa...@gm...> - 2007-05-09 17:53:54
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Thanks Craig. The heat theory is looking less likely. The latest failure was at around 8am this morning when the temperature of the unit was only 67 degrees. The devices have a temperature sensor built in so I know exactly what the temperature was :-) Steve On 5/9/07, Craig Hughes <cr...@gu...> wrote: > > Steve, let me take a look into the driver code and see if I can > figure out when the LED might be switched off. The wifi module does > tend to get pretty hot, and while I haven't seen a thermal shutdown > myself, it could well be that the heat from the module plus the > northern CA pre-summer heatwave is causing the module to shut down or > something. I'll be back with what I find in the driver source in a > mo... > > C > > On May 9, 2007, at 7:31 AM, Steve Sakoman wrote: > > > I've recently begun beta testing my gumstix based embedded device. > > > > Several times over the past week beta units have lost network > > connectivity. The units are "in the field" and hence I haven't yet > > had the opportunity to attach a serial cable and scope. Visual > > examination of the failed devices shows that the yellow led on the > > wifistix is off after network connectivity is lost. Rebooting > > fixes the problem in every case. > > > > When I installed the devices I checked wifi signal levels and they > > seemed to be fairly good. The environment is more harsh than the > > average office -- high temperatures in the installation area were > > over 100 degrees this week. The times of failure don't seem to > > correlate with temperature though. > > > > My questions: > > > > Under what circumstances does the wifistix driver turn off the led? > > Is there any notification that I can subscribe to in order to > > restart networking when this happens? > > > > Not having the driver source code in cases like this is a drag :-) > > > > I'll get out to one of the units today to collect further data, but > > it would help to understand the driver's expected behavior. > > > > Thanks! > > > > Steve > > > > ---------------------------------------------------------------------- > > --- > > This SF.net email is sponsored by DB2 Express > > Download DB2 Express C - the FREE version of DB2 express and take > > control of your XML. No limits. Just data. Click to get it now. > > http://sourceforge.net/powerbar/db2/ > > _______________________________________________ > > gumstix-users mailing list > > gum...@li... > > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > |