dsp on off in pure data external

interesting question.....

I was going to say, yeah, this is how i do it in MEC/Orac:
https://github.com/TheTechnobear/MEC/blob/master/mec-kontrol/pd/kontrolrack/KontrolRack.cpp

void KontrolRack_dspState(bool onoff) {
#ifndef __COBALT__ 
    t_pd *pdSendObj = gensym("pd")->s_thing;;
    if (!pdSendObj) {
        post("KontrolRack_dspState: unable to find  pd to change dsp state to %d", onoff);
    } else {
        t_atom args[2];
        SETSYMBOL(&args[0], gensym("dsp"));
        SETFLOAT(&args[1], onoff);
        pd_forwardmess(pdSendObj, 2, args);
    }
#endif
}

but as you can see, Ive explicitly disabled this for Bela...
unfortunately, I can't remember doing this... my assumption is it must have crashed, so I disabled it.

note:
I send lots of pd messages around like this on bela and its fine, its just this one that is disabled.
also it works fine on other platforms - its also possible libPD might be the culprit here.

you should be able to, unless I made some ugly decision...

klemenz Is there a function i could use in a pure data external to send the [; pd dsp $1( message?

However, what do you want to achieve?

klemenz underruns are not dangerous or bad, so it might be enough to mute audio to make them silent...(no crackles)