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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...
  4. 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.
    ...
  5. 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!
    ...
  6. 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...
  11. This thread :...

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

    For this Library: github.com/ftrias/TeensyDebug
  12. 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...
  13. 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...
  15. 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...
  22. 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;...
  24. 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...
  25. Added code # to post #1 Should the final line...

    Added code # to post #1

    Should the final line of the while read as follows? :: while (size != 0);


    static uint8_t buf;
    do {
    if (!usb_configuration) {
    ...
  26. If this were on Windows machine check out ::...

    If this were on Windows machine check out :: github.com/Defragster/Tset
    After installing IDE and TeensyDuino the IDE never needs to be opened - using TyCommander for SerMon ( and optionally upload...
  27. Just for ref - playing with Multi Serial did a...

    Just for ref - playing with Multi Serial did a count of Entropy results for values :: Entropy.random(0, 15)
    This is output from SerialUSB1 - Let it run on two T_4.1's let it run for 1 second and...
  28. Good you made it work - hopefully the under pin...

    Good you made it work - hopefully the under pin leads stay well connected.

    In this image lower left edge you can see dual row SMD pins. They are a bit tight - but supporting them in place to...
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    Before writing monitor availableForWrite() - was...

    Before writing monitor availableForWrite() - was a recent post on this by Paul -
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    In that case another contribution by @luni may...

    In that case another contribution by @luni may offer a solution: github.com/luni64/TeensyStep
  31. History - the only WSON chip tested was the 128...

    History - the only WSON chip tested was the 128 MB NAND chip. The NOR Flash tested were the typical 16 MB Winbond chips 'with legs'.

    This is a 32 MB Flash chip that may have an ID that doesn't...
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    Welcome. Not sure of connections, but looking...

    Welcome.

    Not sure of connections, but looking at the video it appears that Serial3 is wired? Not easy to see clearly with paused video.

    How does that data get sent to the HC-05?

    Not seeing...
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    Not knowing - or even having looked - how the...

    Not knowing - or even having looked - how the timers are used - is it possible they could be replaced with the higher level code in TeensyTimerTool or the intervalTimer where those low level details...
  34. Do a desired USB aware Blink or other sketch and...

    Do a desired USB aware Blink or other sketch and a Verify build in the IDE .

    A single press/release of the Button should put it in bootloader mode.

    Alternative is to unplug USB and PRESS Button...
  35. Those are what I've seen called 'machine pin...

    Those are what I've seen called 'machine pin headers'

    Much finer gauge indeed than standard headers like those from PJRC.

    icloud.com/photos/0scjgQBiqynuazBSDLBSzqO-A#Pomona_-_Downtown
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    didn't look .... but Sounds like the timers are...

    didn't look .... but Sounds like the timers are being used low level and not through PJRC interfaces?

    This github.com/luni64/TeensyTimerTool is a set of code that may show needed example or...
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    @buddym - 1.8.12 had a short life for issues it...

    @buddym - 1.8.12 had a short life for issues it caused and IDE 1.8.13 popped out quickly. Problems may not relate to Ubuntu - or the problem at hand ... but ...

    It might be good to upgrade to...
  38. reposted ......

    reposted ... forum.pjrc.com/threads/62182-Schematic-Review-Modified-Teensy-3-5-Circuit

    closed
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    Is "a) Every time you call transfer you set ..."...

    Is "a) Every time you call transfer you set ..." just an internal no transmit operation?

    If so that may be faster than compares or tests or state storage. The only thing keeping it queued is data...
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    Cool. Seem to recall now the other transfer16()...

    Cool. Seem to recall now the other transfer16() issue was on T_LC display driver or something.

    Good luck with a fix.
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    When @KurtE or Paul sees this there may be an...

    When @KurtE or Paul sees this there may be an answer - it seems this was recently discovered and addressed - there may be a PULL REQUEST {pending or merged} on github CORES for Paul.

    edit>: Quick...
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    Indeed two USB Hosts won't communicate. And So...

    Indeed two USB Hosts won't communicate. And So far the T_4.x USB Host hardware has only been supported in HOST mode.

    This can work using a UART to USB adapter from one of the T_4.1's serial...
  43. PROGMEM is designed to be safe for use on T_4.0...

    PROGMEM is designed to be safe for use on T_4.0 and T_4.1. It puts DATA into FLASH for static storage not using RAM. But with the ARM memory layout it provides directly addressable memory.

    If...
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    Indeed the page www.pjrc.com/store/teensy40.htm...

    Indeed the page www.pjrc.com/store/teensy40.htm indicates "(64K reserved for recovery & EEPROM emulation)"

    Indicated below - the recovery program only takes 4K - but the 60K of EEPROM space is...
  45. Updated the copy of Windows...

    Updated the copy of Windows github.com/Defragster/Tset/ to use this KurtE version - though it is renamed imxrt_size.exe. Using that in 'editor of choice' that can run external batch files to execute...
  46. Was suggesting it may be worthy of it's own...

    Was suggesting it may be worthy of it's own thread - rahter than some posts on this unique thread.

    Zero is 0 in both cases. Not sure what a negative compare or assign to a unsigned does - simple...
  47. if read right... the desired HTML starts in one...

    if read right... the desired HTML starts in one place - SD - moves once to place #2 and then is sent to place ethernet - seems it also then moves to SPIFFS?. ... it is all simple ASCII text that in...
  48. I'll look up the new imxrt-size. There was a...

    I'll look up the new imxrt-size. There was a posted version somewhere in the beta or something I picked up - maybe it was actually home built - seems I played with it once to isolate/confirm the ID...
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    If this is Windows it is easy to get GDB started...

    If this is Windows it is easy to get GDB started - it is already in the installed files of IDE/TeensyDuino.

    It was added as an option using github.com/Defragster/Tset/

    The GDB thread also has...
  50. Updated github.com/Defragster/Tset...

    Updated github.com/Defragster/Tset to remove missing file warning when TyComm not integrated :: github.com/Defragster/Tset/commit

    REM when TyComm integrated this .model. file will exist
    if...
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