Hi,
Some time ago I tried to make a synchronous output byte stream with an
FT245R. Try as I might all I got were stuttering bursts of data that
weren't continuous.
I was hoping that the FT245R would behave like a sound card and properly
flow control and back-pressure my application program to output a
continuous stream of bytes.
The application is to control stepper motors in a coordinated fashion,
so it is important that once the flow starts that the byte stream not
glitch until the stream finishes and the FIFO runs out.
Well, that was a few years ago and I recall that the stuttering
was a known problem with the FT245R.
Does anyone have any advice for me? I need something like 1Mbyte/sec
transfer rate. Do any of the newer FTDI chips work in a "sound card"
fashion, or do I need to add something like an FPGA to unpack the FIFO
and rebuffer it?
Is there any open source circuits/software that I could use as a
template to use?
Thanks for any help!
--
Rick Walker
--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
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