AVR-Chat

In the simplest setup, the AVR just sees async serial data. It doesn't
know anything at all about USB. On the PC end, you install drivers from
FTDI or Lynx that make the device look like a comm port. Dead simple.
There are lots of documents at the FTDI web site.

If you want to just try it out, either one of the proto boards mentioned
earlier in this thread or one of the Lynx modules would be very easy to
hook up and play with. Tho just check out the USB end, you could just
connect the serial transmit and receive lines to each other and skip the
AVR altogether.

Phillip
www.VisualConductor.com


> -----Original Message-----
> From: James Washer [mailto:washer@trlp.com] 
> Sent: Tuesday, January 04, 2005 12:25 PM
> To: AVR-Chat@yahoogroups.com
> Cc: phillip@bartal.com
> Subject: Re: [AVR-Chat] USB and ATmega
> 
> 
> 
> For those of us who have never played with USB....  
> 
> Once I hook up the FTDI chip... 
> 
> 
> What does the AVR "see"?
> Is it just serial data? 
> Do we have to included any USB aware code on the AVR? 
> What kind of USB device driver is required on the host pc to 
> talk to our device? Does the FTDI handle buffering etc? Do 
> you have example code you'd be willing to share?
> 
> Yes, I'm sure this is all documented somewhere.. but a "jump 
> start" would sure help us beginners
> 
>  - jim
> 
> 
> On Tue, 4 Jan 2005 10:26:32 -0500
> "Phillip Vogel" <phillip@bartal.com> wrote:
> 
> > Linx modules have the FTDI chip and all the glue in a 16 
> pin package. 
> > Hook up VCC, GND, TX, RX and 4 wires to the USB connector 
> and you're 
> > good to go. Available from Digikey. Piece of cake.
> > 
> > Phillip
> > 
> > > -----Original Message-----
> > > From: Paul Maddox [mailto:P.Maddox@signal.qinetiq.com]
> > > Sent: Tuesday, January 04, 2005 8:24 AM
> > > To: AVR-Chat@yahoogroups.com
> > > Subject: Re: [AVR-Chat] USB and ATmega
> > >
> > >
> > >
> > > Hi,
> > >
> > > > >I want to add USB to a circuit with a ATmega
> > > microcontroller, what is
> > > > >the best choice considering price, compatibility, and speed?
> > > >
> > > > FTDI chips work nicely.
> > >
> > > I second that, FTDI chips are great and they come with 
> drivers for 
> > > everything!!
> > >
> > > Paul
> > >
> > >
> > >
> > > 
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > > 
> > >
> > >
> > >
> > >
> > >
> > 
> > 
> > 
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>