Programming uDMX

[Codeweasel]

Dear All,

Apologies if this is not the correct place to ask, but I am stuck for anywhere else to put this request....

So, I am trying to write a little utility that will run on Windows to perform simple MIDI-to-DMX translations. I have so far been able to identify incoming MIDI and extract the data I'm after (Note ON and Velocity). I have also found some information about the functions exposed by uDMX.dll but in my programming environment (VB .NET in Visual Studio 2017), I get errors from the system when I try to send data to the driver using the function "ChannelSet"

Therefore, does anyone here have any experience with PInvoke declarations and calls to uDMX.dll?

... Anyone?

.... Mr Freestyler developer?

Please help

Thanks

Graham

[Codeweasel]

Bad form to reply to one's own post, but....

Just on the off-chance, I tried a bit of code "fiddling" and cracked the issue myself

For anyone who is remotely interested, the API notes (and VB5 sample) on the uDMX website are wrong... Channel set takes Integers and not Longs as parameters, so the correct VB .NET implementation is to declare the function via DLLImport, like so:

Code: Select all

    <DllImport("uDMX.dll", CallingConvention:=CallingConvention.StdCall)>
    Private Shared Function ChannelSet(ByVal Channel As Integer, ByVal Data As Integer) As Boolean
    End Function

Then call it like

Code: Select all

ChannelSet(1, 127)

Cheers

Graham

PS: Look out for a MIDI to DMX "Direct" utility when I've finished writing it. Hopefully it will allow those of you who have asked previously about expanding the Freestyler's 24 MIDI to DMX controls to drive any combination of 512 DMX channels from any combination of 127 MIDI Notes

[Partyman]

I look forward to trying it out but I have no solutions for you.

[Codeweasel]

Well on the way to finishing. I have to try it out against our live rig but it's looking promising so far.

[Aevarex]

Sounds interesting for sure.

[Codeweasel]

All,

Please check out the '3rd Party and Addons' forum where I have just uploaded the first version of MIDI-2-DMX.

Enjoy!