Tech Support > Microsoft Windows > Drivers > USB BULK speed, driver
USB BULK speed, driver
Posted by william on July 30th, 2003


hello,
I am developing driver for CYPRESS USB2.0 FX2, EP2, BULK IN,
My problem is that I must do BULK_READ within every melliSecond or even
500uS or less. Otherwise the data will losed between two BULK_READ, because
the FIFO in CYPRESS FX2 is very small. How can I do that?
Is it possible to let the Driver continuesly do BULK_READ, and fill an
ring_buffer? time between 2 BULK_READ must be 1ms or less.

thank you very much.
william


Posted by Maxim S. Shatskih on July 30th, 2003


Or maybe send 1 BULK READ with a huge buffer size?

Max

"william" <mojun163@163.com> wrote in message
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