Re: [CAD_CAM_EDM_DRO] USB DRO

Bryan Mumford wrote:

> >Just a thought as a newbe but would a USB device meet the needs of
> the list?
>
> I've recently been looking into USB peripherals, and my take on it is
> that it's not so easy to implement the bus. I'd be eager to hear from
> anyone who's created a USB interface, especially with a PIC chip. But
> how hard can it be? A USB mouse is tiny!

How can you get 12 Mbit/second synchronous transfers with a PIC? A UART
won't
talk this protocol, and the CPU would have no time to do anything else.
There are
many USB chips that have the USB interface as well as a micro, flash
memory and
assorted I/O peripherals on one chip. Sure, the mouse is tiny, it has
ONE, special
purpose chip in it. Ready to design your custom chip?

Jon