AVR-Chat

Hi everyone, once more thanks for the answers. I have some more
questions though. Would I need a lot of code in the microcontroller
side, when using for example FT232BM? Are there any restrictions for
my 16 devices to be running together (could I cascade hubs for that?)
and what speed transmition I could achieve?

Thanks in Advance
Hugo Oliveira



On Thu, 24 Feb 2005 10:59:51 -0500, Dave VanHorn <dvanhorn@dvanhorn.org> wrote:
> 
> At 10:25 AM 2/24/2005, Hugo Oliveira wrote:
> 
> >Hello Everyone,
> >  Thats my first time writing to this group and I have a question
> >concerned with USB interface. I hope any of you can help me.
> >
> >I am developing a board that uses the a new ATMEL microcontroller
> >(AT90PWM). I need this board to have a interface that will let me plug
> >16 of these in a PC. I am considering USB (with one ore two USB hubs)
> >but my microcontroller does not have this interface. I have a USART
> >and a SPI though. Are there such a thing like a USART <> USB chips
> >available? I dont what that part of my project to take a great deal of
> >time. It does not have to be a very cheap solution because it
> >represents only a small share of the project.
> 
> FTDI makes serial port chips that will do the interface for you.
> They show up on the PC as a serial port, and connect directly to your uart
> signals.
> You'll need to implement hardware handshaking.
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
>