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    What version of the IDE and TeensyDuino are in...

    What version of the IDE and TeensyDuino are in use? The T4 uses a non-kinetis imxrt 1062 processor - so the TeensyDuino is old or there is confusion in the build system.

    The latest IDE release...
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    TeensyDuino 1.54 Beta 2 Published...

    TeensyDuino 1.54 Beta 2 Published
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    It installs :) T_4.1 10-15 uploads...

    It installs :)

    <edit>

    T_4.1 10-15 uploads of 5 recent sketches noted in beta1 thread all good.
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    that link is dead - so what was ordered will be...

    that link is dead - so what was ordered will be too :(

    Looks like we'll need to find a new standby model - I just put one on wife's computer - probably one of those I had.

    Search of - does show...
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    And I see this went in so a common base for other...

    And I see this went in so a common base for other mem alloc can get tested:


    _extram_start = ADDR(.bss.extram);
    _extram_end = ADDR(.bss.extram) + SIZEOF(.bss.extram);

    In conjunction with ::...
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    That post Jan 2018 - a few were tried and that...

    That post Jan 2018 - a few were tried and that post was updated - but you can see the one with more names is labelled GOOD and was the main common test unit. Not now sure what 'connect' means -...
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    Paul has a T_3.6 reference board posted on...

    Paul has a T_3.6 reference board posted on OSHPARK. That and other details are here in the forum somewhere - and perhaps even on the page where the required Bootloader chips on PJRC.com are made...
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    Just saw reference to this on another thread? ...

    Just saw reference to this on another thread?

    It seems there have been 13 users that clicked this post - but not seeing enough info or info readily enough presented there were no ideas ... and 6...
  9. I didn't look at the timer type - but that simple...

    I didn't look at the timer type - but that simple loop should be over 1M loop()'s per second if not 5M - depending on yield() overhead.

    With 'known intervals' and recording the start time - there...
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    Thanks for the reminder @KurtE - my td1.53 still...

    Thanks for the reminder @KurtE - my td1.53 still has the _t41.ld edit in for this 9/15 post/edit/sketch

    That was when I tested against your malloc(EXTRAM) code.

    BTW: There is the new sm_malloc...
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    What @KurtE ( others ) would perhaps do with a...

    What @KurtE ( others ) would perhaps do with a logic analyzer is toggle pins on entry exit to suspect functions to detect code flow running as expected.

    digitalToggleFast() doesn't add much...
  12. This T_4.1 actually has twin 8MB PSRAM chips. ...

    This T_4.1 actually has twin 8MB PSRAM chips.

    So I can get 2.5 million samples in 15MB:

    Started @ secs=5
    Full Buff Stop @ secs=18


    edit to data types:
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    Another T_4.1 sketch edited/written and tested to...

    Another T_4.1 sketch edited/written and tested to run with repeat compile/upload fine with p#30/#27 "official fix".

    Uses 8MB of PSRAM for analog time and data storage:
    Sketch :...
  14. Working with T_4.1 with PSRAM now to test pending...

    Working with T_4.1 with PSRAM now to test pending fix for TeensyDuino 1.54 Beta 1.

    I had to rename the time[] array to compile - changed to timeD[].

    Upped the number of samples to 1M , changed...
  15. Can you repro this uploading the simple example...

    Can you repro this uploading the simple example Blink sketch?

    Win 10 used here exclusively and this isn't seen here. Been using T_4.1 since first pre-release beta board - same with T_4.0 and not...
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    td1.54b1 - reinstall - edits overwrite - default...

    td1.54b1 - reinstall - edits overwrite - default build for T_4.1 new from pack yesterday::
    > sdInfo worked once? then failed, Blink failed.

    Made edits startups.c : no naked @46, no NOPS @108:
    >...
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    Yes, in about 40 minutes ...

    Yes, in about 40 minutes ...
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    tidbit ... processor state ... you know how cell...

    tidbit ... processor state ... you know how cell phone near speakers makes them chatter?

    So this T_4.1 sitting here in fail state - my wife and I hear this odd noise through speakers mild cyclic...
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    See post #1 this thread for some details on the...

    See post #1 this thread for some details on the Bt dongles used to work.
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    SFUN MicroMod connector page...

    SFUN MicroMod connector page says 67 pins.

    5x M.2 MicroMod Connectors
    Key: E
    Height: 4.2mm
    Pin count: 67
    Pitch: 0.5mm

    Given Paul can't comment ... reading the tea leaves is fun ...
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    Not seeing anything here that has shown on Win 10...

    Not seeing anything here that has shown on Win 10 machines here.

    Firewall has no Teensy programs listed. Only thing is adding JAVA on first run for new IDE install, it pops up an APPROVE box I...
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    @Paul - for this post using T_1.54b1 :...

    @Paul - for this post using T_1.54b1 : Schematic-error-in-T4-0-or-T4-1-on-SD-pins

    I put a 16GB SD card on a T_4.0 breakout ( the FRDM4236 ) and it worked to sdFat-Beta build and run Formatter and...
  23. I have SDFatBeta here and a T_4.0 on the FRDM4236...

    I have SDFatBeta here and a T_4.0 on the FRDM4236 ( PCB with T_4.0 mapping pins and SDIO to a T_3.6 formfactor )

    Used: T:\tCode\libraries\SdFat-beta
    Not used:...
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    Nice to be in good company ... err - well not...

    Nice to be in good company ... err - well not really ...

    Can confirm both blinks work with this in startup.c:

    void ResetHandler(void)
    {
    unsigned int i;

    #if defined(__IMXRT1062__)
    asm...
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    Have running BLINK and no delay - can edit and...

    Have running BLINK and no delay - can edit and upload to work.

    I made just the edits shown above ( bootdata.c color coding was on existing code - it was the block above that was needed )
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    I had github updated my cores but beta 1 released...

    I had github updated my cores but beta 1 released before I swapped so I didn't see anything. And today's testing was IDE only - except TyCommander is integrated on the TD1.53 version - but it...
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    Above T_4.1 had some QPSI chip(s). Unpacked a...

    Above T_4.1 had some QPSI chip(s).

    Unpacked a Fresh T_4.1 - it was blinking and connected - Upload fail and button push fail - though TeensyLoader goes through the motions.

    To check used...
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    Into Fresh 1.8.13 folder TD 1.54b1 installed. ...

    Into Fresh 1.8.13 folder TD 1.54b1 installed. Using IDE tools.

    T_4.0 no problem with blink and blinkWithoutDelay upload and edit Upload.

    T_4.1 online to start - then never programs - even...
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    ... restarted ... downloading now ...

    ... restarted ... downloading now ...
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    @Paul - did you pull the WIN EXE? My machine...

    @Paul - did you pull the WIN EXE? My machine cannot get it. First attempt started and halted? ... waited ... Now I can see folder and the exe - but download won't start?

    Other WWW stuff works -...
  31. See post #2 here for edit to map() code to fix...

    See post #2 here for edit to map() code to fix out of bounds return for TD 1.54 going beta.

    That Beta thread not live yet ...
  32. I've started using %ld ... painfully ... there...

    I've started using %ld ... painfully ... there was a sketch once on something that failed until I did that ...
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    yes I'll look at that batch of screen shots and...

    yes I'll look at that batch of screen shots and see if I can make some step-wise sense of them ...
  34. @mborgerson - yes please - wiring too ... what...

    @mborgerson - yes please - wiring too ... what @KurtE said. I have a pair of cameras and could build one to a T_4.1 to play along - but too many wires to do and redo while testing against evolving...
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    That looks nice, and the .ld has the .hab_log...

    That looks nice, and the .ld has the .hab_log that may or may not be empty and no need to adjust anything - except HAB users will have reduced DMAMEM - though they could creatively find that 8KB if...
  36. If keyboard is a USB Device - it can connect to...

    If keyboard is a USB Device - it can connect to the internal pins on T_3.6 for USBHost usage with proper cable.

    That page shows the needed cable and pin wiring is on the card or other pages.
    ...
  37. @luni - cross post - good example inline with p#5...

    @luni - cross post - good example inline with p#5 notes. Now coding here isn't needed :)

    Should be no reason it won't work with EXTMEM when present.
  38. Better follow up @luni - though p#2 suggestions...

    Better follow up @luni - though p#2 suggestions included much would have worked switching to _isr() timer as the loop() would then only use 'i' after .end() of the _isr() so volatile not needed -...
  39. Quick guess is the T_4.1: for(int j = 0;...

    Quick guess is the T_4.1:

    for(int j = 0; j<i; j++){
    Serial.print(data_[j]);
    ...

    Is printing too fast and overwhelming the PC ability to receive/process the data. Add some...
  40. Is the IDE being used to build? It uses the...

    Is the IDE being used to build? It uses the sketchbook copy first, some alternates do not AFAIK.

    Also when Verbose build details are shown - at least from IDE - it points out which library was...
  41. Good work ... >> Not hooked one up yet or...

    Good work ...

    >> Not hooked one up yet or following your code ... but the 32KB cache works across the PSRAM, maybe it is helping as that will transfer at CPU speed if it is covering the data

    I...
  42. Cool. Glad it helped.

    Cool. Glad it helped.
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    p#32 - Windows Perf Issues? Without a specific...

    p#32 - Windows Perf Issues? Without a specific case - and not knowing a single cause ... perhaps link the doc pjrc.com/teensy/td_download.html#antivirus_performance_issue to the posts here on this...
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    p#20...

    p#20 : 'Key Features' table on this page : pjrc.com/teensy/
    > Doesn't include T_4.x details summary - like effective EEPROM space etc.
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    p#18...

    p#18 : PROGMEM .vs. FLASHMEM and Add::
    Memory summary could present EXTMEM info for allocating into PSRAM at compile time

    * DONE *
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    p#17...

    p#17 : * DONE *
    https://www.pjrc.com/teensy/td_libs_OctoWS2811.html
    > No mention of Teensy 4: "OctoWS2811 requires the DMA (Direct Memory Access) engine which is available only in Teensy LC &...
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    This was in p#12 : Interrupts page seems out of...

    This was in p#12 : Interrupts page seems out of date and non-ARM helpful? : pjrc.com/teensy/interrupts.html
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    p#4...

    p#4 :: Might add link to ? :: https://github.com/luni64/TeensyTimerTool on IntervalTimer page?

    * DONE *
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    p#36...

    p#36 :: T_4.1 card needs a backside image - at least posted on the web to demark the pads and SDIO pin refs to pin #'s as well as the USBHost like T_3.6 and then the new CHIP pads noted there for USB...
  50. Good luck, sounds like a proper start - there...

    Good luck, sounds like a proper start - there must be some difference that should show.
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