No usbMIDI at all.... Teensy 4.1 & AudioShell

G

Goose

New member
Hi there!
I'm in my first Teensy project so probably the answer to my problem may look quite obvious to you.
Lets go for it....
I'm just playing with a Teensy 4.1 trying to build my first synth.
I got impressed with Notes&Volts youtube's channel so tried to that "Teensysynth" as a starting point.
The think is there's no way I can make my Teensy recieve any usbMIDI from my computer, my keyboard or whatever.

I've even tried, with a very simple code I found over here that lights a led when recieven CC messages but no success.
Pure data does not work either.
It's not a code problem, i believe. I've tested code from other people that supposedly works fine.

So the answer is: Is there anything I forget?
PureData panel has a MIDIin and MIDIout object and no response.

Maybe it's a hardware problem....

On the other side, Garageband detects my Teensy as a MIDI device, but cannot send anything via USB.

Thanks in advance if you have any clue...
Goose
 
If you would post some code, people might be able to help or at least give a hint. Without, no-one can say if its a code or any other issue.
 
Here your are the code, but plenty of people used it with no problem:
Code: 
// Teensy-Synth Part 3
// Keyboard Test
// By Notes and Volts
// www.notesandvolts.com

#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>

// GUItool: begin automatically generated code
AudioSynthWaveform       waveform2;      //xy=405.00000762939453,377.5000057220459
AudioSynthWaveform       waveform1;      //xy=409.00000762939453,318.0000057220459
AudioSynthNoisePink      pink1;          //xy=417.50000762939453,428.7500066757202
AudioMixer4              mixer1;         //xy=600.0000114440918,378.75000381469727
AudioOutputI2S           i2s1;           //xy=747,377
AudioConnection          patchCord1(waveform2, 0, mixer1, 1);
AudioConnection          patchCord2(waveform1, 0, mixer1, 0);
AudioConnection          patchCord3(pink1, 0, mixer1, 2);
AudioConnection          patchCord4(mixer1, 0, i2s1, 0);
AudioConnection          patchCord5(mixer1, 0, i2s1, 1);
AudioControlSGTL5000     sgtl5000_1;     //xy=588,480
// GUItool: end automatically generated code

// GLOBAL VARIABLES
const byte BUFFER = 8; //Size of keyboard buffer
const float noteFreqs[128] = {8.176, 8.662, 9.177, 9.723, 10.301, 10.913, 11.562, 12.25, 12.978, 13.75, 14.568, 15.434, 16.352, 17.324, 18.354, 19.445, 20.602, 21.827, 23.125, 24.5, 25.957, 27.5, 29.135, 30.868, 32.703, 34.648, 36.708, 38.891, 41.203, 43.654, 46.249, 48.999, 51.913, 55, 58.27, 61.735, 65.406, 69.296, 73.416, 77.782, 82.407, 87.307, 92.499, 97.999, 103.826, 110, 116.541, 123.471, 130.813, 138.591, 146.832, 155.563, 164.814, 174.614, 184.997, 195.998, 207.652, 220, 233.082, 246.942, 261.626, 277.183, 293.665, 311.127, 329.628, 349.228, 369.994, 391.995, 415.305, 440, 466.164, 493.883, 523.251, 554.365, 587.33, 622.254, 659.255, 698.456, 739.989, 783.991, 830.609, 880, 932.328, 987.767, 1046.502, 1108.731, 1174.659, 1244.508, 1318.51, 1396.913, 1479.978, 1567.982, 1661.219, 1760, 1864.655, 1975.533, 2093.005, 2217.461, 2349.318, 2489.016, 2637.02, 2793.826, 2959.955, 3135.963, 3322.438, 3520, 3729.31, 3951.066, 4186.009, 4434.922, 4698.636, 4978.032, 5274.041, 5587.652, 5919.911, 6271.927, 6644.875, 7040, 7458.62, 7902.133, 8372.018, 8869.844, 9397.273, 9956.063, 10548.08, 11175.3, 11839.82, 12543.85};
byte globalNote = 0;
byte globalVelocity = 0;
int octave = 0;
const float DIV127 = (1.0 / 127.0);

void setup() {
  AudioMemory(80);
  usbMIDI.setHandleControlChange(myControlChange);
  usbMIDI.setHandleNoteOff(myNoteOff);
  usbMIDI.setHandleNoteOn(myNoteOn);
  sgtl5000_1.enable();
  sgtl5000_1.volume(0.32);
  waveform1.begin(WAVEFORM_SAWTOOTH);
  waveform1.amplitude(0.75);
  waveform1.frequency(82.41);
  waveform1.pulseWidth(0.15);

  waveform2.begin(WAVEFORM_SAWTOOTH);
  waveform2.amplitude(0.75);
  waveform2.frequency(123);
  waveform2.pulseWidth(0.15);

  pink1.amplitude(1.0);

  mixer1.gain(0, 1.0);
  mixer1.gain(1, 1.0);
  mixer1.gain(2, 1.0);
}


void loop() {
  usbMIDI.read();
}

void myNoteOn(byte channel, byte note, byte velocity) {
  if ( note > 23 && note < 108 ) {
    globalNote = note;
    globalVelocity = velocity;
    keyBuff(note, true);
  }
}

void myNoteOff(byte channel, byte note, byte velocity) {
  if ( note > 23 && note < 108 ) {
    keyBuff(note, false);
  }
}

void keyBuff(byte note, bool playNote) {
  static byte buff[BUFFER];
  static byte buffSize = 0;

  // Add Note
  if (playNote == true && (buffSize < BUFFER) ) {
    oscPlay(note);
    buff[buffSize] = note;
    buffSize++;
    return;
  }

  // Remove Note
  else if (playNote == false && buffSize != 0) {
    for (byte found = 0; found < buffSize; found++) {
      if (buff[found] == note) {
        for (byte gap = found; gap < (buffSize - 1); gap++) {
          buff[gap] = buff[gap + 1];
        }
        buffSize--;
        buff[buffSize] = 255;
        if (buffSize != 0) {
          oscPlay(buff[buffSize - 1]);
          return;
        }
        else {
          oscStop();
          return;
        }
      }
    }
  }
}

void oscPlay(byte note) {
  waveform1.frequency(noteFreqs[note]);
  waveform2.frequency(noteFreqs[note + octave]);
  float velo = (globalVelocity * DIV127);
  waveform1.amplitude(velo);
  waveform2.amplitude(velo);
  pink1.amplitude(velo);
}

void oscStop() {
  waveform1.amplitude(0.0);
  waveform2.amplitude(0.0);
  pink1.amplitude(0.0);
}

void myControlChange(byte channel, byte control, byte value) {
  switch (control) {
    case 100:
      mixer1.gain(0, (value * DIV127));
      break;

    case 101:
      mixer1.gain(1, (value * DIV127));
      break;

    case 102:
      mixer1.gain(2, (value * DIV127));
      break;

    case 103:
      switch (value) {
        case 0:
          octave = 24;
          break;
        case 1:
          octave = 12;
          break;
        case 2:
          octave = 0;
          break;
        case 3:
          octave = -12;
          break;
        case 4:
          octave = -24;
          break;
      }
      break;
  }
}

Thanks for your fast reply!!
 
After some research I left my MacOS Catalyna aside and got an old Windows Laptop.
Seems Teensyduino couldn't reach the right directories...
Now I'm having this error message:
Multiple libraries were found for "SD.h"
Used: C:\Users\Àlex González\AppData\Local\Arduino15\packages\teensy\hardware\avr\1.57.2\libraries\SD
Not used: C:\Users\Àlex González\AppData\Local\Arduino15\libraries\SD
exit status 1
 
The Multiple libraries were found for "SD.h" message is harmless, and Arduino probably should not print this. It simply means the SD library meant for Teensy is being used and the SD library Arduino publishes for other boards isn't.

Sometime else is wrong to cause "exit status 1". Can't see from only this message.
 
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