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  1. Replies
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    That's the schematic for the Teensy 3.6, not the...

    That's the schematic for the Teensy 3.6, not the ref board. The big difference is the pins on the K66 are numbered for BGA and not the LQFP that's on the ref board. Ref board uses MKL04 instead of...
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    I have found the answer... its on the MKL02 page...

    I have found the answer... its on the MKL02 page

    Also, an enlightening post in the archive by HWGuy.
    https://forum.pjrc.com/archive/index.php/t-39801.html


    HWGuy
    12-10-2016, 08:21 PM
    Here...
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    Another Teensy 3.6 reference board question. The...

    Another Teensy 3.6 reference board question. The datasheet for the K66 does not specify crystal load capacitance in the table (in section 3.3.3). There's a footnote (1) that says internal capacitance...
  4. Hi Paul, sorry we've been distracted with a...

    Hi Paul, sorry we've been distracted with a hardware production issue but I wanted to let you know we are still thinking about this.

    We've primarily been testing with the test code from msg #1...
  5. I'll give it a shot Paul, but unfortunately we've...

    I'll give it a shot Paul, but unfortunately we've been readily reproducing the issue with the new code. I did the "remove a semicolon" test and verified I was building with the new bits. Last week I...
  6. Yes, its looking good Paul! I think none of my...

    Yes, its looking good Paul! I think none of my tests have been valid for one reason or another. For instance, on our codebase, we've already removed all of the print statements so there was no serial...
  7. I tried changing build options to LTO to force...

    I tried changing build options to LTO to force recompile of libraries but it didn't help. We also tried putting a serial.print in the .c file but that doesn't work. So we've built our full codebase...
  8. The first system failed too, at about 7800 secs....

    The first system failed too, at about 7800 secs. As before, opening the serial monitor recovered it to a steady 120BPM.
  9. I have one still running at about 4500 secs, the...

    I have one still running at about 4500 secs, the other croaked at about 2700 secs :(. I'm going to reboot the system and restart the test.
  10. I've got it running, I'll let you know in a bit...

    I've got it running, I'll let you know in a bit if I see anything interesting!
  11. Happy to have given you a real challenge :D Have...

    Happy to have given you a real challenge :D Have fun on that burning man project, I'm sure it must me interesting!

    In the meantime, we have a workaround for our Teensy powered widget; we just...
  12. I finally got a fail again, nothing to speak of...

    I finally got a fail again, nothing to speak of wrt the GPU or other utilization. So I did the reboot test, Teensy stayed running and it recovered the BPM indicating that restarting the Windows side...
  13. Defragster - wrt to the monitoring app, it hasn't...

    Defragster - wrt to the monitoring app, it hasn't mattered if the app is running or not, or which app is used to monitor. In other words, for MIDI it doesn't seem to matter if we "consume" the data...
  14. Very possible its Windows. As mentioned above, no...

    Very possible its Windows. As mentioned above, no problem when using iPad as host.
  15. Or maybe MS is hiding their background update...

    Or maybe MS is hiding their background update tasks.

    Winvir shows .165 and I don't have any new updates this week showing up in my Updates history, I might force an update and see if it changes...
  16. Something that might help, is once it gets into...

    Something that might help, is once it gets into that condition, if you open a serial terminal it will typically recover for a short time (10 minutes maybe?). it might give you a chance to see it fail...
  17. Hi Paul, I've tried a bunch of experiments to try...

    Hi Paul, I've tried a bunch of experiments to try to get it to fail faster. Its been a futile exercise, it seems pushing it harder is making it run longer. For instance, cranking up the BPM to 650...
  18. Thanks again Paul, appreciate your time and...

    Thanks again Paul, appreciate your time and effort. I'll try some experiments to see if I can get it to fail faster. I'm thinking that just shoving more data into the serial interface might do it,...
  19. Added back serial.begin, and compiled with MIDIx4...

    Added back serial.begin, and compiled with MIDIx4 + serial, no serial prints. It ran for 3 hours before getting into the condition. That's much longer than the 45 min to hour it normally takes to...
  20. Another observation... When we remove all serial...

    Another observation... When we remove all serial initialization and prints, and build with MIDIx4 without serial, we never get into the bad condition. Its run for some hours that way. Next I'll try...
  21. In our system's code we call it in the main loop...

    In our system's code we call it in the main loop without the While. After seeing your message we decided to try it with the While, and didn't notice any change in general behavior. That is, we do...
  22. Ah yes, good catch. I'll add the following as we...

    Ah yes, good catch. I'll add the following as we have it our system's code and test again.
  23. A new and interesting observation

    Paul, maybe this will help with diagnosis...

    After Teensy goes into the "condition", I opened a serial terminal and Teensy recovered! It started playing notes and the clock stabilized. It ran...
  24. I should add, that running the above sample code,...

    I should add, that running the above sample code, just plug Teensy into USB on Windows and start the monitoring program. It immediately starts sending clock and notes. Also, I'm going to try this...
  25. This MIDI tool for Linux looks useful. You can...

    This MIDI tool for Linux looks useful. You can select what type of MIDI messages to monitor. However, for this exercise its useful to have a graph.
    https://sourceforge.net/projects/kmidimon/
    ...
  26. Thanks Paul! The two tools we use most are...

    Thanks Paul! The two tools we use most are MIDI-OX (http://www.midiox.com/zip/midioxse.exe) for Windows and MIDIClock (http://midiclock.com/wp-content/uploads/2014/04/midiclock4.01.zip) for Windows. ...
  27. Issue with USB MIDI failing over time when using usbMIDI.sendRealTime

    Issue: When connected to Win10 PC USB, sending MIDI clock (usbMIDI.sendRealTime) and MIDI notes, after about an hour the Teensy becomes very sluggish, eventually MIDI notes stop sending but clock...
  28. For future reference, from other threads... the...

    For future reference, from other threads... the priorities are as follows:
    All the interrupts default to priority 128
    USB defaults to 112
    The hardware serial ports default to 64
    systick defaults...
  29. Thanks for the reply Paul. Unfortunately we...

    Thanks for the reply Paul. Unfortunately we designed a circuit that relied on high impedance on PTE0. We tried setting PTE0 to Input, but it doesn't seem to fix the issue so we will continue...
  30. Teensy 3.2 PORTE and DDRE not recognized when setting i/o registers

    Hello, having some trouble using the functions to set I/O registers as described here:

    https://www.pjrc.com/teensy/pins.html

    Using the Arduino IDE, PORTC and DDRC are recognized, but PORTE and...
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    Thank you for the heads-up on that Paul. I was...

    Thank you for the heads-up on that Paul. I was hopeful the answer would be similar to the previous poster, "Odds are good it will work." but no support...

    Do you plan to be at the Dorkbot meeting...
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    I've got essentially the same issue. I didn't...

    I've got essentially the same issue. I didn't find that the 80 pin model was any more available than the original. So looking at "plan B".

    I've got a project where we are planning to build about...
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