Hello,
Sorry for potentially bad explained problem... I'm periodically an 
active CSound-user, but it's quite a while since I've been working on 
this - it has been more work done in Pure Data.
Anyhow.

I couldn’t so far find the correct solution for this, so I hope this is 
something someone could give a quick answer to. When pressing down a 
MIDI key (or controlling CSound from another platform), CSound receive 
note number and velocity, and at note off note number and 0.  This is a 
bit hard to explain, but I need to «get hold of that 0» when it’s note 
of. I am using an arduino with CSound, therefore is this necessary (so 
that I can send a 0 to the arduino to tell it that it is to stop the 
note). In other cases, it is possible to use a madsr-opcode, but that is 
not relevant here… I mean, when an instrument is stopped being played, 
it should tell the arduino to stop by sending a signal (0) to the serial 
port.

Best regards, Hanstein

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Thanks Tarmo and Dave, I'll see if I can get this working! 

Best regards, Hanstein

On 2018-04-06 16:31, Tarmo Johannes wrote:

Not sure If I got what you need but perhaps you could think of starting and stopping instrument from MIDI note (events from channels 1 start instrument 1, channel 2 instr 2, or use massign)

and you can use a i-time operation to send something to arduino and release opcode to detect the end:

 

;setupd arduino

instr 1 ; started from midi

serialWrite_i iPort, iByte

if (release()==1) then

serialWrite <something else>

end

endin

 

Hope it helps you further,

see also

 

http://write.flossmanuals.net/csound/b-csound-and-arduino/

http://write.flossmanuals.net/csound/b-triggering-instrument-instances/

 

greetings,

tarmo

 

 

2018-04-06 17:03 GMT+03:00 Dave Seidel <dave.seidel@gmail.com>:

You can use the release opcode to detect if the instrument is being called on release, this is what I use to know when to turn off instruments that I kicked off on the initial note press. 

On Fri, Apr 6, 2018, 8:15 AM Hanstein Rommerud <hanstein@alumni.ntnu.no> wrote:

Hello,
Sorry for potentially bad explained problem... I'm periodically an
active CSound-user, but it's quite a while since I've been working on
this - it has been more work done in Pure Data.
Anyhow.

I couldn’t so far find the correct solution for this, so I hope this is
something someone could give a quick answer to. When pressing down a
MIDI key (or controlling CSound from another platform), CSound receive
note number and velocity, and at note off note number and 0.  This is a
bit hard to explain, but I need to «get hold of that 0» when it’s note
of. I am using an arduino with CSound, therefore is this necessary (so
that I can send a 0 to the arduino to tell it that it is to stop the
note). In other cases, it is possible to use a madsr-opcode, but that is
not relevant here… I mean, when an instrument is stopped being played,
it should tell the arduino to stop by sending a signal (0) to the serial
port.

Best regards, Hanstein

Csound mailing list
Csound@listserv.heanet.ie
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
        https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here