How to send MIDI Start (FA)


FourPaws
 

Hi all...

Simple question... How do I send the "MIDI Start (FA)" command...???

Thanks..!!!


C Mesibov
 

  MIDIStart  

On Tue, Jan 3, 2023 at 4:51 AM FourPaws via groups.io <fourpaws.media=icloud.com@groups.io> wrote:
Hi all...

Simple question... How do I send the "MIDI Start (FA)" command...???

Thanks..!!!


chrisw_63
 

If you're just using the UnO (not 2) firmware, I don't believe you can.  Start is a MIDI System Message, and no equivalent CC message exists.  If you're using UnO2, the command is:

SendRealtime MIDIStart


ossandust
 

On top of that you might need to send MIDIClock messages with a certain BPM for the MIDIStart message to do anything. ("SendRealtime MIDIClock 100 BPM")
I believe the official MIDI spec says that playback or recording of a sequencer for instance starts on the first MIDIClock message following the MIDIStart. If the receiving device follows that spec, it will not react on the MIDIStart message if there is no MIDIClock. Some devices might not follow that spec and react immediately on the MIDIStart message, so this is just for your info - in case you wonder why nothing happens while you do send MIDIStart/MIDIStop messages. 


FourPaws
 

Hello All....

Thank you for the replies.

I'm working with a Boss RC500 Loop Station, and it's not playing very nice with MIDI start and stop. I know it is receiving and sending MIDI, but it seems to not want to react to MIDIStart and MIDIStop commands.

Is anyone able to decipher this for me..?? It's what the Loop Station sends when I press the start button.

SysEx F0 41 10
SysEx 00 00 72
SysEx 12 00 00
SysEx 00 01 7F
SysEx F7

Also, any tips programming MIDI to run this thing would be awesome

Thanks..!!!


Jack Fenton
 

There is a difference between MIDI SysEX realtime start and stop commands (as you show above) and standard MIDI  start and stop commands.  Normal Transport Start and Stop Commands are simply FA and FC respectively. Maybe that is what the RC500 is looking for.


Jack Fenton
 

On Fri, Jan 6, 2023 at 06:18 PM, FourPaws wrote:
SysEx F0 41 10
Actually this isn't even part of the SysEX realtime standard. It looks like a Roland propriety Sysex message.


ossandust
 

according to the RC500 manual (p21) the RC500 reacts on MIDI Clock and MIDI Start/Stop when you set the RC-500's MIDI SYNC to 'AUTO'