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  1. Replies
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    32 byte read on the first has to complete before...

    32 byte read on the first has to complete before the 2nd random read does another 32 byte read to complete. It seems it should return in the middle.

    Test would perhaps be better to have the for...
  2. On the T_3.6 selecting the CPU clock and BUS...

    On the T_3.6 selecting the CPU clock and BUS clock control secondary clocks in some defined way.

    On the T_4.x CPU speed doesn't relate to the clocks used throughout the system in the same way. ...
  3. Okay, just compile RAW_HID as in post #1?

    Okay, just compile RAW_HID as in post #1?
  4. Sticky: Indeed not a lot published ... There is a single...

    Indeed not a lot published ... There is a single sample showing usage: ...\examples\Teensy\USB_Serial\Triple_Serial_Test\Triple_Serial_Test.ino

    TyCommander has been updated and will support...
  5. Nice, is there a sketch to go with that?

    Nice, is there a sketch to go with that?
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    Good point Paul - that's twice I've skipped...

    Good point Paul - that's twice I've skipped mentioning the really cool ARM_DWT_CYCCNT ... since I didn't look at the posted code for the generic info I gave.

    See this post for example of use if...
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    @Bob Larkin - Cool - more info! And maybe a...

    @Bob Larkin -
    Cool - more info! And maybe a short term workaround - though I always prefer to use the TyCommander tool as it integrates a more robust SerMon - especially with multiple Teensy...
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    There are tests posted to invalidate the cache...

    There are tests posted to invalidate the cache that would allow seeing the true uncached timing behavior. Seems that was in Paul's PSRAM test sketch posted on the forum and on his github.

    There...
  9. Cool that GDB was useful in getting into the...

    Cool that GDB was useful in getting into the code! As noted - very odd tested and used and shipped code that worked triggering to fail? Weird that it fails on the END, but the edit is change to...
  10. It was just added. Processor has native support...

    It was just added. Processor has native support for doing that - it was just formalized in last release of two of TeensyDuino - see I saw it exists on some other boards as well. But if it is...
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    It is there now thingiverse.com/thing:4568474...

    It is there now thingiverse.com/thing:4568474

    Very cool
  12. something odd that the DumpMemoryInfo() DTCM fill...

    something odd that the DumpMemoryInfo() DTCM fill not working as coded and used for test by author [ KurtE or mjs513 ? ]
  13. Cool, have fun - good luck

    Cool, have fun - good luck
  14. Always a fun option - enabled the EXP here in the...

    Always a fun option - enabled the EXP here in the new chrome MSFT Edge to work - so it is an option that might come in handy or help with future development.
  15. That just enabled fault handler - something...

    That just enabled fault handler - something faulting memory it seems:


    _CFSR :: 00000082
    (DACCVIOL) Data Access Violation
    (MMARVALID) MemMange Fault Address Valid

    _HFSR :: ...
  16. Something is ODD indeed - using post #1 sketch...

    Something is ODD indeed - using post #1 sketch and commenting out the line :: AudioOutputTDM2 tdm_out;

    Really messes with the output. Instead of printing the ASCII HEX of the incoming character...
  17. Hopefully this is the direction you are looking...

    Hopefully this is the direction you are looking for?

    Look for : ...\hardware\teensy\avr\libraries\SD\examples\Datalogger\Datalogger.ino

    Those Examples are under SD and use the TeensyDuino...
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    That was quick. Those results being less than...

    That was quick.

    Those results being less than T_3.6 aren't beyond belief due to the change going along with the note in post #2.

    That is the four ports in IRQ_GPIO6789 - 6,7,8,9 are shoe horned...
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    Teensy 3.x has a different architecture and that...

    Teensy 3.x has a different architecture and that IRQ doesn't exist in the T_4.x hardware design.

    That code will need edited.

    On the T_4.x's 1062 processor as prepared on entry to setup() all...
  20. Cool. The T_3.5 and T_3.6 have twin DAC's. ...

    Cool. The T_3.5 and T_3.6 have twin DAC's.

    But as Jp3141 notes I saw this on the item page: VOR 1/2 POSITIONING ACCURACY: Less than +-2.0 degrees (w/ synchro input); Less than +-2.1 degrees (w/...
  21. Indeed that is 3 years old - exactly what I was...

    Indeed that is 3 years old - exactly what I was thinking of : forum.pjrc.com/threads/45854-Battery-backed-NV-RAM

    Odd the T_4.x doesn't have that many bytes - but nice all the T_3.x's do.
  22. Thanks KurtE - A magic number is a good keyword...

    Thanks KurtE - A magic number is a good keyword for search
  23. It has probably been too long and non-specific...

    It has probably been too long and non-specific keyword to forum search - not sure if the sample was T_3.6 or other - it was by 'Frank B'. The Manual PDF will have some section on the RTC areas. I...
  24. If the T_3.2 had an RTC battery it may have some...

    If the T_3.2 had an RTC battery it may have some storage bytes kept alive. I know the T_3.6 does. Not sure if that section functions without the crystal installed.
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    The ARM_DWT_CYCCNT when running ticks with each...

    The ARM_DWT_CYCCNT when running ticks with each clock cycle - that test just gets it read once and works as observed to read again for the "==" test.

    When the counter is not running the value is...
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    yes, if the only purpose is the timed output...

    yes, if the only purpose is the timed output control that will give best response - wasn't sure if that was only task at hand?

    On T_3.2 the CYCNT isn't on by default.

    if ( ARM_DWT_CYCCNT ==...
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    YMMV :) - I only started reading on post #3 - saw...

    YMMV :) - I only started reading on post #3 - saw p#1 earlier ... and skipped - and then KurtE's #2 reply.
    but freq of a timer when giving sync'd output timing will also tie the frequency.

    Having...
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    With an UNZIP install - at least on WINDOWS -...

    With an UNZIP install - at least on WINDOWS - multiple IDE/Teensy versions can be maintained ... not sure if that is a helpful option to isolate projects.

    PWM's run in groups off of timers...
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    All TeensyDuino installed files are 'your' copy...

    All TeensyDuino installed files are 'your' copy and you can edit them in place where installed for a private version.

    However any reinstall or update with TeensyDuino Installer will overwrite that...
  30. That snippet leaves out some context - but it...

    That snippet leaves out some context - but it seems to look like a valid attempt to change a pin before and after executing 'some code' and should generally be executed in order it is programmed.
    ...
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    Please don't infer or inject ill will to text...

    Please don't infer or inject ill will to text answers - especially across potential language/location barriers ...

    And? says/asks many other things - generally best not to assume the worst!
    ...
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    The purpose of delay() is to block the current...

    The purpose of delay() is to block the current code execution path for a fixed time. As noted anything else outside the current code path capable of background interrupt or operation will continue.
    ...
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    Yes, that would be an AdaForum quesion for ::...

    Yes, that would be an AdaForum quesion for :: 2020_8_9_PJRCFeatherTest/2020_8_9_PJRCFeatherTest.ino

    They make a feather shield for Teensy - should have asked about that rather than let it slide. ...
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    That is RAW CPU counts - yes division will turn...

    That is RAW CPU counts - yes division will turn into time values. And yes, that would be for the loop of 1,000 reads.
    >> 600,000,000 per second on 600 MHz T_4.1 with F_CPU_ACTUAL as run time...
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    Have either of you used TyCommander? Seems Linux...

    Have either of you used TyCommander? Seems Linux users get to self build it : github.com/Koromix/tytools/releases

    It integrates a loader replacement. It doesn't push the RTC value to the Teensy...
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    On Windows unzip install I find it here for same...

    On Windows unzip install I find it here for same versions: "T:\arduino-1.8.13\hardware\teensy\avr\libraries\Audio\Audio.h"

    But error is not missing that file - but finding it and saying this file...
  37. This thread :...

    This thread : Using-GDB-with-Teensy-without-hardware-debugger-first-Beta

    For this Library: github.com/ftrias/TeensyDebug
  38. Visual Micro not required, may be integrated...

    Visual Micro not required, may be integrated there - but not related.

    It uses DUAL USB on Teensy and existing GDB CMDline tool already installed with the library on the thread.

    I've tested on...
  39. There is a software debugger interface thread ::...

    There is a software debugger interface thread :: GDB ???

    It will break on a fault and ideally leave a stack trace back to(ward) the point of offense.
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    Two added good points I left off for brevity as I...

    Two added good points I left off for brevity as I had some place to be ...

    Was going to note the loss of interrupts and switch to ARM_DWT_CYCCNT, also if the times look odd the loop may be...
  41. Glad you got to a working solution! Your...

    Glad you got to a working solution! Your 7-09-2020 post date seems to have fallen into a 'black hole' between various users online that would have seen and made some comment on this.
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    Notes: > Faster clock speed may not relate to...

    Notes:
    > Faster clock speed may not relate to the resolution time of the Analog read which to some degree uses the similar hardware process on both chips.
    > Code above shows "t = micros();" after...
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    They are identical in order to the T_4.0, just...

    They are identical in order to the T_4.0, just shifted over to accommodate the parts and match the T_3.6 form factor. As @Saibot notes they are called out lower in the text linked by @Manitou.
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    Indeed that is a bad splattered blob of solder -...

    Indeed that is a bad splattered blob of solder - good luck making it go away and getting function back.

    Question: Is that lead free solder? All of the solder points are nice and uniform - but no...
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    I have a pair of the TallDog T_4.0 prototypes...

    I have a pair of the TallDog T_4.0 prototypes built personally here. The first was initial beta where SD didn't come out right, the second is what you'll get and it works well! Having it...
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    I've gathered a few older ones - when I see them...

    I've gathered a few older ones - when I see them I'll put them on a proper charger - they are charge rate sensitive - smaller ones need fewer Ma pushed at them in proportion to their size. I've not...
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    Was the USBVIN trace on the bottom cut? How...

    Was the USB<>VIN trace on the bottom cut?
    How much current is the board using? Are active components well grounded to the external supply - and not through the Teensy?

    Had an RGB matrix here...
  48. If a fully functional sketch could be presented...

    If a fully functional sketch could be presented to show the problem it could be observed and then understood/fixed.

    Snippets don't allow a repro of the situation at hand. Even if the time was...
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    That was tested early in T_4.0 beta and updated...

    That was tested early in T_4.0 beta and updated to work.

    May need to call this function with desired PWM pin:

    void Talkie::beginPWM(uint8_t pinPWM){
    _pwmPIN = pinPWM;
    _hasPShield = false;...
  50. Seeing other code that gets back into the loop...

    Seeing other code that gets back into the loop might be useful.

    One quick test would be to ignore the processing for now and try the code change above to see if it still fails when all available...
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