--- Markus Klotzbücher wrote:
tike64 tike64@yahoo.com writes:
At least one problem remains, though. I have tested it with a 165KB file and one out of about five fatloads fails. Completion codes of the first failed PTDs are 6 (PIDCheckFailure), 5 (DeviceNotResponding) and then always 0xf (propably device NAKing). After 'usb reset' it works again for a while.
Now I don't understand how transactions can fail with 6 or 5 occasionally. Are sticks known to be unreliable or should I suspect my hardware? What should be done after that kind of failure?
Hard to say. Maybe it's a different timing issue, but could also be the stick misbehaving. Yes indeed some (usually noname) sticks have failed to work. Although you can never be sure I wouldn't suspect
your
hardware if the stick is working properly under Linux.
Maybe Linux recovers gracefully somehow. The stick is Kingston.
Can you test different sticks to see if that makes any difference?
Good idea, must dig other sticks from somewhere.
Meanwhile, I added retries also in case of those errors. I do the retry with the remaining data of the transaction. Now it seems to pass over the original error with a couple of retries but then fails with 8 (data overrun) permanently ... to-be-continued-tomorrow
--
Timo
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