AVR-Chat

--- In AVR-Chat@yahoogroups.com, Øystein Fallo <oysfal@y...> wrote:
> Dave Mucha wrote:
> >In thinking about how to store vast quantiteis of datalogging data
> >AND to port it EASILY to a PC, I was wondering if anyone has used 
one
> >of those USB sticks they call portable hard drives or USB Pen drive
> >or whatever.....
> 
> Interfacing an avr to any usb device requires the avr to act as usb 
host.
> This again would involve enumerating the usb-bus, which by itself 
is a
> complex task. Then the required drivers for the memory-key must be
> implemented.
> Even if you suppose that your key allows low-speed mode, this is 
still
> 1.5Mbit/s, which means bit-banging at 3Mhz minimum, so your avr 
would be
> 100% usb occupied.
> IMHO the best option is to use an external usb-if chip - or a uc 
with
> embedded usb, AT43* to stick to avr-based devices...
> 
> rgds
> Øystein Fallo


I was thinking about using the FTDI chip as the device to connect to 
the PC and AVR and to (hopefully) make connections much easier.

http://www.ftdichip.com/FTModule.htm

Dave




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