Where to send uncritical messages?

MIOS programming (C)
1

Hallo!

I need some input for the software design for a MidiBox-Chain.

The first MB is for Motorfader(and menu-buttons) the second are for any other pots and display.

When a fader is moved the first MB should send a message “fader X/1 moved” or something like that.

Or other not time critical messages, debug messages.  Don’t know what will t be in the future.

No problem until now, this works.

BUT: those message are relatively long sysex-Strings. So they should not be sended at every call of

AIN_NotifyChange. My idea was to buffer such messages and send them if there is “less traffic on the line”…

Whats the best place to send those messages?

Display_Tick()?

Timer()?

Tick()?

Or somewhere else?

2

Why not just send it via MIDI CC’s?

3

-verbose

Don’t understand what you mean.

4

-verbose hehehehe

I mean… Why send the message saying the fader has moved as some big nasty sysex message? Why not just send MIDI CC’s?

5

(…) and send them if there is “less traffic on the line”…

Whats the best place to send those messages?

Display_Tick()?

Timer()?

Tick()?

That clearly depends:

Tick() is called every tick (as the name sais), so this will be quite often, so to speak a lot more often than AIN_Receive

Display_Tick() depends on how often it’s called. If you call it every time AIN changes, it will be the same as in AIN. So except having unordered code no gain.

Timer() would be suitable if set up right, but:

the question really remains: Why not sending CCs?

=> http://www.ucapps.de/midibox_link.html

“(…) not only common MIDI events, but also other informations can be transmitted without reaching the host software at the end of the chain”

Regards,

Michael

6

Hallo!

I think you mean MIDI-Controller Messages.

As internal (masked stream with f9,fe) stream this would be ok. But CC have only 3bytes. With some kind fo encoding this could would work. 

But I think I will use the timer function to trigger the “remote printing”.

7

May I ask what you are trying to archive?

Why do you want to encode MIDI Messages? When you split faders and pots over multiple Midiboxes, I think you don’t have different cases but two Core Modules in the same housing. So you need a Core-to-Core-Link as described in the link I posted above. You can send every message you like from Core1 to Core2.

MIOS is taking care for marking the messages, so they do not leave the last Core!

Or am i missing something  ???

8

Yeh CC is an acronym for Continuous Controller, it’s what you say when you’re so lazy even ‘controller’ is too much to type :wink: (Like me for example)

Edit: beaten by AC

9

Edit: beaten by AC

Yeah, I’m the speediest typer ever  ;D

Don’t mess with the man who types faster than it’s own shadow ;D ;D

hehe…

10

:o *stares in awe*

:wink:

11

Timer() would be a bad choice, because it interrupts the main task, and could therefore also interrupt a MIDI stream; this could result into sporadically sent invalid MIDI events.

So, if timed transactions are required, the Timer should request a send, and Tick() should check for this request flag, clear it and send the events (similar to the approach used for DISPLAY_Tick())

Best Regards, Thorsten.

12

Thanks Thorsten, that’s exactly what I wanted to know.