Re: Midish "If" functions

On Mon, Feb 05, 2018 at 04:08:21PM +0100, Daniel Resino wrote:
> Hi!
> 
> I really appreciate if you could advise me if Midish can do what I need.
> 
> I have a stage piano and a synth working together in live performances. I would
> like to set up both instruments with only one touch. Stage piano only can be
> programmed to send to the synth MSB, LSB and PC numbers, but the synth needs to
> receive a certain SysEx message to switch between diferent modes. So, from the
> stage piano, I can change synth´s sounds but not the mode.
> 
> I was thinking on using a RaspberryPi with Pisound card to route ALL signals
> from the piano to the synth and viceversa, but be able of sending a certain
> SysEx message when a specific MSB message will appear at the input.
> 
> I can send a package of MSB, LSB and PC messages from the Stage piano, but
> Synth only responds to PC changing, so maybe I could use MSB or LSB to make
> Midish send the SysEx that synth needs to change between modes (and of course
> PC).
> 
> In my mind, it implies the usage of "if" functions (or similar), but I cannot
> find nothing familiar within the manual. Could you give me an advise?
> 

Hi,

Midish doesn't allow triggering interpreter code by MIDI events.

However, if the sysex messages are short, you could define a custom
event using the evpat function. Then, define a filter that for each
incoming pc event generates a outgoing sysex.

Could you show an example sysex event?

> Is PiSound card compatible with this software running on Raspbian?
> 

I don't know, but as the board is linux-centric I guess there's a
Linux driver for it. If not, any standard USB-MIDI interface would
probably work out of the box.