Ok, Back to USB hacking.
I didn't reproduce my USB host disconnect problem after fixing a
problem with the IO timings on the CPU bus to the controller.
However, I noticed another issue. I tried plugging an USB mass storage
device and experienced very very slow transfer speed (about 4k/sec).
Using an analyser, I noticed that the driver is only tranfering one
bulk (64 bytes) packet every 2 frames. Actually, I see that when
"spying" a transfer:
IN (ep 1) DATA0 (64 bytes)
ACK
SOF
SOF
IN (ep 1) DATA1 (64 bytes)
SOF
SOF
etc...
Before I start diving into your driver's guts, any clue about
what's up ?
BTW. On the "device" side, now that those low-level IO stuffs are
fixed, I could verify that my interface to the chip is working properly,
I'll have a coupe of functions implemented soon, I'll post the code
once done so we can think about a unified device interface.
Regards,
Ben.
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