[En-Nut-Discussion] serial communication receive task hangup

Henrik Maier hmlists at focus-sw.com
Wed Jul 26 13:02:29 CEST 2006

I would definitely upgrade to 4.1.9. This version contains a set of 
stability fixes concerning event handling which helped me to solve 
lock-ups in a similar application.

 From the ChangeLog "... Event and timer handling re-design, again. This 
fixes a bug, which possibly existed since version 3.9.8 and freezes 
threads under heavy load..."


Peter Sodermanns wrote:
> Hi group,
> my data logger application based on Ethernut 2.1b from time to time 
> stops serial communication. It gets every 3 minutes data from another 
> device connected to RS232 port 2. Longest period of flawlessly working 
> is 14 days, mostly it stops after 2..3 days.
> Since the other tasks keep working I think it's an application problem, 
> but I wouldn't exclude a hardware problem either - maybe distorting 
> pulses on the connected wire (about 15 m of length).
> I'm using WinAVR-20060421 and Ethernut 4.0.3.

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