Obtaining more MIDI device details

[albeardsley]

Hi there,
I appreciate the work you've done with mido, it has been indispensable for my projects.

I was wondering if it was possible through mido to obtain more information about the plugged in MIDI devices.
Primarily, I was interested in determining the length of the keyboard (e.g., a 61 key piano or an 88 key piano).
But also a range of other information would be very useful, such as whether or not it has a pitchwheel, bluetooth capabilities, current local control status, etc.

Any pointers (no pun intended) on where I could start looking would be much appreciated.
Thanks

[rdoursenaud]

Hi and sorry for the late reply.

Unfortunately MIDI 1.0 doesn't provide this kind of capability.

The nearest feature would be using the Device Inquiry System Exclusive Universal message (See page 40 of the MIDI 1.0 detailed specification) but parsing the response - if the target device supports Device Inquiry - would need access to a database with all the devices and features you're looking for.
A project on its own.

MIDI 2.0 should allow this with MIDI-CI but there is almost no device out there and mido doesn't support it as I'm not well versed into it yet.

Hope this helps.

[rdoursenaud]

For what it's worth, the Device Inquiry message to query all devices is F0 7E 7F 06 01 F7.

If supported, the device should respond with: F0 7E <device ID> 06 02 mm ff ff dd dd ss ss ss ss F7.

Byte(s)	Description
F0 7E <device ID>	Universal System Exclusive Non-real time header
06	General Information (sub-ID#1)
02	Identity Reply (sub-ID#2)
mm	Manufacturers System Exclusive id code
ff ff	Device family code (14 bits, LSB first)
dd dd	Device family member code (14 bits, LSB first)
ss ss ss ss	Software revision level. Format device specific
F7	EOX

Extracted from the MIDI 1.0 detailed specification, page 40.

[albeardsley]

Hey no worries. Thanks for your help.
I'll have a look into it.
Cheers