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. To unsubscribe send a mail to [email protected]
