simulating chorded keyboards

[Bill Freeman]

One hopes not.

If memory serves, MIDI is asynchronous serial at 125,000 bits per second
(1/16 or a 2MHz crystal?), send using current loop.

Thus it should be a byte stream at the /dev level, with interpretation as
MIDI data being done at main program level, rather than device driver level.

That is, it should present like a serial port.

And if you have a serial port that supports the funny baud rate (or
something close enough), you could conceivably build a current loop to
RS-232 level translator.

What I don't remember is whether the DC isolation occurs in the sender or
in the receiver.  Probably in the receiver, so you may be stuck providing
and opto-isolator, like official MIDI devices do.

On Thu, Oct 16, 2014 at 2:48 PM, Tom Buskey <tom at buskey.name> wrote:

> Does the USB HID simultaneous key limit apply to a MIDI-> usb adapter?
> They adapters are pretty cheap nowadays.
>
> Then you need a your chording keyboard to speak MIDI.
>
> On Wed, Oct 15, 2014 at 8:17 PM, David Rysdam <david at rysdam.org> wrote:
>
>> Joshua Judson Rosen <rozzin at geekspace.com> writes:
>> > How about MIDI?
>>
>> When I was about to hit "reply", I was going to say "I dunno, we haven't
>> tried it yet." But as I did, I had a thought (which maybe was your
>> intent): MIDI has a chording keyboard input.
>>
>> Of course, nobody has MIDI....
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