• CTAG-ALSA

  • mode switches detected on the audio thread!

with the second cape it's giving this issue.
alt text

Did you check that the cape on top is configured as a "follower" as per the link above?

YES!! now it's working. Thanks a lot!!!

great!

Fun fact: when you reported the first issue I thought you were using the latest beta release of Supercollider. I then tested it and I realised that, indeed, with that release the example you were using (and only that one) was causing mode switches. So I fixed that and amended the release. At the end it turns out that you were having an entirely different issue, caused by the configuration of the CTAG cape .... there was a lot to learn for me here!

Good that it all ended well and that now you have a more updated version of Bela AND of Supercollider, but the journey was very long and ultimately the issue you were having was all in the wiring ... 🙂

yes, apologize that I also didn't recognize the bad wiring. Anyway, good to have the latest update. Thanks again and stay well.

11 days later
10 months later

dear @giuliomoro I have the same Issue: mode switches detected on the audio thread!
And i download the latest version ob SUpercollidder v3.11.2-bela.dep try to run in terminal on Mac and it shows up:

alt text

should i say yes to it to continue?
Many thanks in advance.

    sps should i say yes to it to continue?

    Yes. That just means that it's the first time you connect to the board.

      alt text
      This is what happened after "yes". But the problem (mode switch detected on the audio thread) still shows up after i get back to my code:

      s = Server.default;

      s.options.numAnalogInChannels = 8;
      s.options.numAnalogOutChannels = 8;
      s.options.numDigitalChannels = 16;

      s.options.blockSize = 16;
      s.options.numInputBusChannels = 2;
      s.options.numOutputBusChannels = 2;

      s.options.postln;

      s.waitForBoot({
      "Server Booted".postln;


      SynthDef(\pressSensorL, {arg inbus = 0, outbus = 0;
      var toe, heel, signal;
      toe = AnalogIn.ar(0);
      heel = AnalogIn.ar(1);
      signal = toe * heel;
      Out.kr(outbus, signal);
      }).add;

      SynthDef(\pressSensorR, {arg inbus = 0, outbus = 0;
      var toe, heel, signal;
      toe = AnalogIn.ar(0);
      heel = AnalogIn.ar(1);
      signal = toe * heel;
      Out.kr(outbus, signal);
      }).add;

      //System Specifications
      ~variableMappingRate = 0.01;

      // create Buses
      ~leftBus = Bus.control(s, 1);
      ~rightBus = Bus.control(s, 1);

      // create Variable
      ~leftVar = 0;
      ~rightVar = 0;

      // Which Bus should be
      l = Synth(\pressSensorL, [\outbus, ~leftBus] );
      r = Synth(\pressSensorR, [\outbus, ~rightBus]);

      Tdef(\VariableSwitch, {
      loop{
      ~leftBus.get({arg value; ~leftVar = value;});
      ~rightBus.get({arg value; ~rightVar = value;});
      ~variableMappingRate.wait;
      }
      }).play;

      SynthDef('pm', {arg freq=200, amp=0.5, pan=0, dur=1, modfreq=200, idx=0.1, modphase=0, trig=1;
      var sig, env;
      sig = PMOsc.ar(freq, modfreq, idx, SinOsc.ar(modfreq 3));
      env = EnvGen.ar(Env.perc(0.01, 1), trig, timeScale: dur, doneAction: 2);
      Out.ar(0, Pan2.ar(sig       env * amp, pan));
      }).add;

      Tdef(\Test_The_VariableSwitch, {
      ~synthPm = Synth(\pm, [\out, 1]);
      loop {
      ~synthPm.set(\freq, ~leftVar);
      ~synthPm.set(\dur, ~leftVar);
      ~synthPm.set(\amp, ~rightVar);
      }});

      Tdef(\Test_The_VariableSwitch).play;
      })

      Do you have any ideas what the problem could be?
      Best,

        sps This is what happened after "yes"

        Right you have some errors in the code you ran so far ( the trailing d).

        Do the following:
        - download this file on your Desktop https://github.com/BelaPlatform/supercollider/releases/download/v3.11.2-bela-fix-digitalIn/Supercollider-v3.11.2-bela-c91c4980a1.deb
        - run the following:

        scp ~/Desktop/Supercollider-v3.11.2-bela-c91c4980a1.deb root@bela.local:

        verify that no error message is printed, then run:

        ssh root@bela.local dpkg -i Supercollider-v3.11.2-bela-c91c4980a1.deb

        verify that no error message is printed.

        • sps replied to this.
        • sps likes this.

            alt text
            An Error shows up:
            error: cannot access archive 'Supercollider-v3.11.2-bela.debssh': No such file or directory

            could you run the commands exactly as I wrote them in the previous post?

            • sps replied to this.

              giuliomoro Right you have some errors in the code you ran so far ( the trailing d).

              Could you point out what you mean by the trailing d?

                sps it shows no such file or directory

                did you download the file I linked to to your desktop? If you download it to some other location you will need to adjust the path in the command accordingly, which is why I recommend you download it to the Desktop.

                • sps likes this.

                  yes, I am sorry for misunderstood. And no error message has printed on terminal.
                  Back to Bela IDE, and got a new error:

                  Building project ...
                  Build finished
                  Running project ...
                  compiling class library...
                  Found 726 primitives.
                  Compiling directory '/usr/share/SuperCollider/SCClassLibrary'
                  Compiling directory '/usr/share/SuperCollider/Extensions'
                  Compiling directory '/root/.local/share/SuperCollider/Extensions'
                  numentries = 676873 / 7312006 = 0.093
                  3961 method selectors, 1846 classes
                  method table size 4921220 bytes, big table size 29248024
                  Number of Symbols 9224
                  Byte Code Size 264630
                  compiled 227 files in 2.17 seconds
                  Info: 4 methods are currently overwritten by extensions. To see which, execute:
                  MethodOverride.printAll
                  compile done
                  localhost : setting clientID to 0.
                  internal : setting clientID to 0.
                  Class tree inited in 0.1 seconds
                  Welcome to SuperCollider 3.11.2. For help type ctrl-c ctrl-h (Emacs) or :SChelp (vim) or ctrl-U (sced/gedit).
                  a BelaServerOptions
                  Booting server 'localhost' on address 127.0.0.1:57110.
                  Server 'localhost' exited with exit code 127.
                  scsynth: symbol lookup error: scsynth: undefined symbol: Bela_HwConfig_new

                  alt text
                  although it does not shows any error. But i couldn't even run the SuperCollider Example Code on Bela IDE after it...
                  Any ideas how could i fix it?
                  Thanks

                  right, it looks like you have an incompatible version of the Bela core code installed. The safest thing to do would be to update your whole Bela core code as that will also update Supercollider.

                  Here are the instructions:
                  - download this zip archive to your desktop https://github.com/BelaPlatform/Bela/archive/refs/heads/master.zip
                  - run the following in the terminal:

                  cd ~/Desktop
unzip -q Bela-master.zip
cd ~/Desktop/Bela-master
./scripts/update_board -y

                  again, for each command verify that no error is printed before executing the next one.

                  • sps replied to this.
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