My application send query through Acceleport com ports (20bytes)every 4s and receive answer (980 bytes). I use driver 5.0.315.
After few hours all Digi com ports (including unused) locks. My application dead locks on read or write port function. After this when I try to open one of the unused Digi com port, Hyperteminal dead locks.
The same application run on standard PC com ports without any problems for a weeks.
I think there is a problem with the driver - any ideas.
Kiril Mazrev