Now it's just a store and forward problem. If I were doing this I think
I'd use a PIC processor, some external static RAM and an FTDI parallel
to USB chip. This way the camera/storage device can interface to
anything with a USB A port on it. As long as the RAM is big enough and
the average data rate doesn't overwhelm the USB connection it should
work fine. The RAM can be set up as a huge circular buffer. You might
even do this with one of Microchip's development boards so you wouldn't
have to make a custom PCB. If the average data rate is not over 119200
baud you could even use an FTDI USB to serial device and the built-in
serial port on the PIC.
In my experience it's a _lot_ quicker to get a sequential logic device
(i.e. microcontroller) going than an FPGA.
BTW, I do this kind of thing for a living :-)
Regards,
Jim Ham
mtrav100 wrote:
> What if we only need to collect the data at 25 Mhz for a short
> period
of time. Essentially on a button press, we will collect data for , say,
one second. Could we store said data in the onboard RAM or microSD and
transfer it to the host computer over TCP/IP or USB for analysis once
the 1 second sample is collected?
>
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