Bug #1066: Add helper function to send SysEx/MTC via usb-device-midi #1068
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Signed-off-by: Simon Wood <simon@mungewell.org>
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Thanks for the contribution. But I'm a bit confused, I thought system exclusive messages were a completely different format, namely:
How does that differ to the sys ex added here? |
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You are correct, SysEx generally starts with 0xF0 and ends with 0xF7. The helper function takes an array of bytes (say "0xf07f7f010160000000f7") and fragments it to pass over USB-midi protocol, then the USB host reassembles it to pass to client application. The example script (for Pico) generates both the long and short messages that MTC uses. |
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I was using USB-device-midi to send MTC to the host, which is essentially SysEx. But was slowed by the missing helper function to send the packet of SysEx. Anyhow, I wrote one...
Full example script here:
https://github.com/orgs/micropython/discussions/18450#discussioncomment-15043069