Synth-DIY Yahoo! Groups Archives

RE: [AVR-Chat] How to connect AVR microcontroller with USB??

2007-08-10 by Tim Mitchell

John Samperi wrote:
> At 04:05 PM 10/08/2007, you wrote:
>> Does anyone know how to connect AVR microcontroller with USB? Where
>> can I get the simply method for this?
> 
> If the AVR is a slave just use one the FTDI (or similar) chips.
> 
> If a master then it gets a lot more complicated and you will need
> either an AVR with USB...if you can get it.. or something like a
> Vinculum chip or a small module already wired up.  
> 

The AVR 90USB1287 device will do slave or "USB-OTG" (sort of master -
allows you to connect a single USB slave device such as a pen drive).
And it has mass storage or HID implementations so you don't need any
drivers on the host PC.

However it is far from simple. If you want simple and can accept having
to install drivers on the host PC, the FTDI chips are much more
straightforward.

-- 
Tim Mitchell
tim@sabretechnology.co.uk http://www.sabretechnology.co.uk
Sabre Technology (Hull) Ltd, 3a Newlands Science Park, Hull HU6 7TQ
Registered in England and Wales no.3131504
t:01482 801003 f:01482 801078

Re: [AVR-Chat] How to connect AVR microcontroller with USB??

2007-08-10 by Leon

----- Original Message -----

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From: "Tim Mitchell" <tim@sabretechnology.co.uk>
To: <AVR-Chat@yahoogroups.com>
Sent: Friday, August 10, 2007 8:49 AM
Subject: RE: [AVR-Chat] How to connect AVR microcontroller with USB??


> John Samperi wrote:
>> At 04:05 PM 10/08/2007, you wrote:
>>> Does anyone know how to connect AVR microcontroller with USB? Where
>>> can I get the simply method for this?
>>
>> If the AVR is a slave just use one the FTDI (or similar) chips.
>>
>> If a master then it gets a lot more complicated and you will need
>> either an AVR with USB...if you can get it.. or something like a
>> Vinculum chip or a small module already wired up.
>>
>
> The AVR 90USB1287 device will do slave or "USB-OTG" (sort of master -
> allows you to connect a single USB slave device such as a pen drive).
> And it has mass storage or HID implementations so you don't need any
> drivers on the host PC.
>
> However it is far from simple. If you want simple and can accept having
> to install drivers on the host PC, the FTDI chips are much more
> straightforward.

The PICs with USB, like the 18F2455, are probably easier to use than the 
AVRs:

http://www.leonheller.com/usb

They don't have USB-OTG, though.

Leon
--
Leon Heller
Amateur radio call-sign G1HSM
Yaesu FT-817ND and FT-857D transceivers
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leon355@btinternet.com
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