Registered on :
09-12-2009
Messages : 2
 OFF-Line
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Hello,
I am develop an application on uPSD3454EV for In-Application Programming (IAP) using USB. i use our own USB drivers developed on WinDDK and well tested on ARM system, firmware for uPSD3454EV for both boot loader and application is written in the C language and complied using keil uVision3 compiler and PC side software is developed in Visual C.
I am face problem regarding its reliability means if we download firmware in the uPSD3454EV controller 50 times using my USB IAP it is ok ( means full downloading is complete ok and device work functionally ok ) nearly 25 times only and other times it is failed. i test this on 4 to 5 different PC but i get same result.
And when downloading is not ok it stop download at somewhere and pc side software give me error.
Error: A device attached to the system is not functioning.
please give me documents if anyone find such problems and solution on it, or some extra care which i want to take which is not given in datasheet of uPSD34xx, or give some probable reason because of it may happen.
Waiting for your replay.
Thank You.
With warm Regards,
Somnath H. Jagtap
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Problem in USB IAP
Posted 24-10-2008 at 06:22 
