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Adding remote start/stop/next song/previous song ot MIDIO128?


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Posted

Can someone point in a direction for where I need to be looking in the MIDIO128 code to try and implement that feature? I poked around in seq.c and midio_sysex.c but I didn't get especially far. I suspect I may be needing to do something to/with SEQ_PlayStopButton() or scs_config.c, buttonHook()?

My plan was to have MIDIO128 interpret MIDI transport commands (Play, Stop, FFwd, Rew) so I can remotely control it using using transport controls on my MIDI keyboard or a custom control surface.

As a sort of aside, is there enough headroom to backport some CV functions to MIDIO128, say, if I toss out things I don't need? I'm really only using the MIDI playback and routing functions of MIDIO128. If it could handle some basic CV (say just following MIDI CCs) I could save on space and costs by needing only one CORE.

Posted

Forward code would be as simple as:

     MUTEX_SDCARD_TAKE;
     SEQ_PlayFileReq(1, 1);
     MUTEX_SDCARD_GIVE;

 

Reverse code is similar but with a -1 in first parameter:

     MUTEX_SDCARD_TAKE;
     SEQ_PlayFileReq(-1, 1); // Move to previous file
     MUTEX_SDCARD_GIVE;

 

I think this will work for the Play function.

     if( FILE_SDCardAvailable() )
     { 
         if(!SEQ_BPM_IsRunning() )  // If in STOP mode.
              SEQ_PlayStopButton();
     } 
 

To do the PAUSE function just remove the ! (not) from the check.

 

I don't remember what functions may have been declared as STATIC in the .c files but I changed them to suit my needs. At lease this shows you what functions I called to do these things.   Hope this helps.

 

Pete

 

Posted

Thanks Pete! That does help a bit, yep! I'll need to wrap those functions around capturing the SysEx or CC sent from MIDI to invoke those (and, I suppose, filter those events out so they don't get forwarded back out).

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