Comments on: USB IO Chips

By: dfowler

dfowler — Sat, 16 Dec 2006 04:55:56 +0000

jdoege,

Yes a streaming transfer would be much faster. The current version of the Delcom chip just does a single packet and the standard interval for this kind of comunications on USB is 1mS.

I will look at the Activewire and Opal kelly units.

Thanks for the comment.

By: jdoege

jdoege — Tue, 12 Dec 2006 17:02:23 +0000

The way to use USB to control such a thing is to compose your message and send all the bytes at once instead of writing one bit or byte at a time. The Delcom device may not support this, but others do such as the Activewire dev board and, my personal favorite, the USB plus FPGA dev boards from Opal Kelly.

By: dfowler

dfowler — Sun, 10 Dec 2006 22:09:55 +0000

Alan,

No specific project yet. I am just experimenting for now.

It may not be a good “getting started” guide but I do plan to write up may experiments soon.

By: Alan

Alan — Sun, 10 Dec 2006 21:06:46 +0000

If there a project the LCD will be used for? Or is it simply experimental for now?

If you have a good “getting started” guide to graphic LCDs I would love to know about it.