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        MIDI-OX >> Scripting Questions >> Sending Controller Data from vb6
        
(Message started by: Jez on Nov 13^th, 2005, 6:33pm)

Title: Sending Controller Data from vb6
Post by Jez on Nov 13^th, 2005, 6:33pm

Hi All,

I am using MIDI OX to allow me to communicate with my DSP1424-P signal processor to control the parameters through different MIDI controllers and values, using vb6 for the front end design.

I am using the MIDI implementation chart for the processor and have a list of controller numbers.

I am using the .MidiOutputMsg method to send:
-1 for the port (as any port is valid on my hardware for receiving data)
Controller number - data1
Parameter value - data2

My question is what do I have to send for the 'status' parameter?

Thank you

Jez

Title: Re: Sending Controller Data from vb6
Post by Jamie OConnell on Nov 13^th, 2005, 7:48pm

MIDI Status is a combination of the MIDI message number (ex: NoteOn = 90, NoteOff = 80, Controller = B0) and the MIDI Channel (ex: Channel 1 = 00, Channel 2 = 01, Channel 16 = 0F). So, Controller 1 (Modulation) with a value of 64 (decimal) on channel 3 works out to: B2 01 40

Title: Re: Sending Controller Data from vb6
Post by Jez on Nov 13^th, 2005, 8:17pm

Thank you for your quick reply Jamie....

Does this make sending the data1 and data2 parameters un-needed then?

Could you give an example of how to send controller message 87 with a value of 1 on all midi channels.

Do you have a good link to a website explaining more about MIDI messages and controllers?

Thanks
Jez

Title: Re: Sending Controller Data from vb6
Post by Jamie OConnell on Nov 15^th, 2005, 2:42pm

Quote:

Does this make sending the data1 and data2 parameters un-needed then?

No. A MIDI Controller message is always 3 bytes long (Status, CC#, Value), unless running status is in effect. But running status is almost never used on Windows.

Quote:

Could you give an example of how to send controller message 87 with a value of 1 on all midi channels.

You'd send the following:

B0 57 01
B1 57 01
B2 57 01
B3 57 01
B4 57 01
B5 57 01
B6 57 01
B7 57 01
B8 57 01
B9 57 01
BA 57 01
BB 57 01
BC 57 01
BD 57 01
BE 57 01
BF 57 01

Quote:

Do you have a good link to a website explaining more about MIDI messages and controllers?

Try this one: http://www.borg.com/~jglatt/tutr/miditutr.htm