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  • rvh's Avatar
    09-29-2022, 09:42 AM
    So it's a year down the track and I have my project running very nicely on a Teensy 3.6. But the board is now out of stock everywhere, so I'm looking or possible alternatives. And the extra CPU power of a Teensy 4.x...
    16 replies | 1118 view(s)
  • rvh's Avatar
    08-20-2022, 01:47 AM
    Here is the solution that works for me on T3.6. Rather than commenting out the midi_flush_output line as suggested before, add a variable at the top of the usb_midi.c that is used to notify the flush routine that a...
    4 replies | 185 view(s)
  • rvh's Avatar
    08-20-2022, 01:44 AM
    Here is the solution that works for me on T3.6. Rather than commenting out the midi_flush_output line as suggested before, add a variable at the top of the usb_midi.c that is used to notify the flush routine that a...
    50 replies | 1508 view(s)
  • rvh's Avatar
    08-19-2022, 04:00 PM
    After more thorough testing, it seems this is not a good solution because some of my other midi USB functions misbehaved (badly) after making the change. It seems we need the change specifically for sysex transfers, but...
    4 replies | 185 view(s)
  • rvh's Avatar
    08-19-2022, 04:00 PM
    After more thorough testing, it seems this is not a good solution because some of my other midi USB functions misbehaved (badly) after making the change. It seems we need the change specifically for sysex transfers, but...
    50 replies | 1508 view(s)
  • rvh's Avatar
    08-19-2022, 08:54 AM
    I received information from h4yn0nnym0u5e via the other thread about how to apply Rolfdegen's change to the library for Teensy 3. In short, what is needed is to comment out line 957 of usb_dev.c: #ifdef...
    4 replies | 185 view(s)
  • rvh's Avatar
    08-19-2022, 08:44 AM
    Excellent, thanks very much. And yes, it fixed my problem on T3.6 too, so thank you Rolf also! Paul, (if you see this) are you able to make use of these findings for T3 & T4 to improve the library, so this change...
    50 replies | 1508 view(s)
  • rvh's Avatar
    08-19-2022, 06:09 AM
    I can confirm that if I send the sysex out of the Teensy using serial midi over a 5-pin DIN cable, rather than USB, everything works just fine. In that case I used an external device to translate the 5-pin din signal...
    4 replies | 185 view(s)
  • rvh's Avatar
    08-19-2022, 04:37 AM
    This is cross posted from a thread in the general discussion about a Teensy 4.1 issue: https://forum.pjrc.com/threads/70288-usbMIDI-transmission-error?p=311329#post311329 But for my purposes it belongs here as I am...
    4 replies | 185 view(s)
  • rvh's Avatar
    08-19-2022, 04:28 AM
    Even running absolutely nothing but a sysex dump in a simple sketch I get errors on Teensy 3.6 with midi Ox. Here is my code, using a button press on pin 2 to start a dump. It should show 50000 bytes transferred,...
    50 replies | 1508 view(s)
  • rvh's Avatar
    08-18-2022, 11:55 PM
    Thanks for the thread. I have a very similar problem, but on Teensy 3.6 (using midi Ox). My synth's sysex messages are about 1200 bytes long, and after adjusting max limits in the library files, I can get single message...
    50 replies | 1508 view(s)
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Using rev D audio board as simple DAC with variable sampling rate 09-29-2022 09:42 AM
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