[dorkbotpdx-blabber] Simplifying the NES controller

[Brian Richardson]

There's a Joystick example here:
http://www.fourwalledcubicle.com/MyUSB.phpwhich is the library the
Benito already uses (I learned-ed that yesterday
after the MIDI question, heh).  So maybe the USB work is basically done?

On Thu, Sep 11, 2008 at 3:11 PM, Paul Stoffregen <paul at pjrc.com> wrote:

>
>  Hi party people.
>> Could I possibly get this:
>> http://www.zero-soft.com/HW/USB_NES/index.php
>> to use a Benito instead?
>>
>>
>
> You most certainly could, with quite a bit of programming effort.  Reading
> the shift register from the old NES controller is easy.  You could even use
> the SPI port to do it, rather than manipulating the pins directly.  That
> Konami code door lock project I made a while back used port pins, not SPI.
>  It was very easy.
>
> The USB HID, and generic USB stuff is where almost all the coding will be.
>  There is an example HID implementation on Atmel's website, using the
> proprietary (expensive) windows-only compilers.  There's also a small matter
> of getting the HID and USB descriptors correct, which are the bytes your
> computer reads to auto-detect (or "enumerate" in USB lingo).  Fortunately,
> this is about the simplest possible HID config, where you have only one
> "report" that is just a single byte representing 8 buttons (still, it's
> absolutely .  You could even just read the shift register when you get the
> interrupt "IN" packet, put that byte in the USB fifo and then set the 2 bits
> that case the AVR chip to send the response.  Very simple.
>
> If you wanted to learn a lot of the gory details of how USB really works by
> doing about the simplest possible USB project, this would definitely be it!
>
>
> -Paul
>
>
>
>
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