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.
Somnath H. Jagtap
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USB IAP problem
Posted 03-11-2008 at 06:22 
