25 lines
766 B
Markdown
25 lines
766 B
Markdown
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# MIDI Negotiation
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Morse code keyers are very simple devices,
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they just connect two wires together.
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You could use a button if you wanted to,
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or even touch wires together.
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The only real complication here is that some browsers
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need to get keyboard events instead of musical instrument events.
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The Vail adapter boots into a mode that sends both keyboard events
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and MIDI messages.
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If it receives a MIDI key release event
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on channel 0
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for note C0,
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it will disable keyboard events.
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Vail sends this "disable keyboard" MIDI event, so as soon as you
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load up Vail, the keyboard events are disabled, and your adapter
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will no longer interfere with your typing.
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If your browser doesn't support MIDI,
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the disable command can't be sent,
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and it keeps on sending keystrokes.
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