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    The single print in the single loop gives all the...

    The single print in the single loop gives all the 'two columns' of output. So one half could be removed or moved to a second copy of the loop. And the separators and terminators could be swapped for...
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    Yes for Audio board, the headphone jack goes on...

    Yes for Audio board, the headphone jack goes on the USB end and the SD card end goes opposite, both on the upper side.

    Not sure if this is helpful? : GPIO/pinList

    It gives each Pin# on the...
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    When unplugged and cool. hold your finger on...

    When unplugged and cool.

    hold your finger on that 'suspect area' as possible and plug it in.

    Does the temp rise to the point of not wanting to hold your finger there in some few seconds?
  4. This post/thread has the recent notes on cards...

    This post/thread has the recent notes on cards and better versus not that good for similar numbers. :: Which-SD-is-Best-for-Audio-Projects
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    The T_4.1 uses 480 Mbps USB and may demand more...

    The T_4.1 uses 480 Mbps USB and may demand more of a cable than slower 12 Mbps devices.

    If getting power - and starting up right - it seems the T_4.1 RED LED should appear on a button press when...
  6. The T_4.1 PCB SD card is only accessed with SDIO....

    The T_4.1 PCB SD card is only accessed with SDIO.

    TD 1.55 makes use of the SdFat library - though .sdfs. may offer improvement using better optimized access code.

    There is benchmark code - give...
  7. Nice work - looks like involved fun!

    Nice work - looks like involved fun!
  8. Just back for a minute after quick late night...

    Just back for a minute after quick late night test and post ... and need to get moving again ...

    Wasn't sure how those numbers could break the build so didn't edit out the cute separators - @luni...
  9. Got 64GB ADATA brand SDHC cards showing 'A2' app...

    Got 64GB ADATA brand SDHC cards showing 'A2' app rating and V30 speed. Uding the MSC-TEST.ino it is giving "B" big write of

    Start Big write of 129982464...
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    DVM here first suggested 20 mV ... and was moving...

    DVM here first suggested 20 mV ... and was moving around ... Pushed the probes harder and it showed just over half a volt - but not enough even to keep it alive on a quick switch off to on ......
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    Plugged in again - time lost and doesn't even...

    Plugged in again - time lost and doesn't even hold a second across repowering ... not measuring a half volt ...
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    There are TFT displays in use - see forum - where...

    There are TFT displays in use - see forum - where a DMA frame buffer is used for display update. Higher res where the 512KB of RAM2/DMAMEM isn't big enough.

    It is SPI - posts like this :...
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    @wwatson - have you seen KurtE's...

    @wwatson - have you seen KurtE's github.com/KurtE/MemoryHexDump
    > coolest thing is it hides dupe lines - that won't help much on an mpg.
  14. Opps - meant to ask dumb question ... Does...

    Opps - meant to ask dumb question ...

    Does the transfer work Teensy > PC, but not PC > Teensy?
  15. Just glancing in passing ... all searches show...

    Just glancing in passing ... all searches show 512B max packet for - at least in articles like this : beyondlogic.org/usbnutshell/usb4.shtml

    I do see 1024B in some notes - but not just now to see...
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    reading here - since the Audio board has headers...

    reading here - since the Audio board has headers just go about : "sticking one end into the female header on the audio board and the other end into the breadboard."
    > as long as the right gauge of...
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    Always a puzzle to decide on connecting ... top...

    Always a puzzle to decide on connecting ... top or bottom ... double stack or female headers on one end ...

    This page shows the pins used for the different elements - minor diff T_3.x .vs. T_4.x...
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    Nice! Ordered.

    Nice! Ordered.
  19. Always good to test load a sketch first - simple...

    Always good to test load a sketch first - simple blink - maybe adding a simple Serial.print on blinking to see it is fully connected.

    Question: with the diode pin in 5V ... how would it get...
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    The USB code runs in the background using...

    The USB code runs in the background using software for native USB hardware - but if loop() isn't running the processor may be crashed so that isn't working either.

    Luckily the Program Button is...
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    Good link @MarkT - didn't have time to note that...

    Good link @MarkT - didn't have time to note that and find that ref.
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    Indeed that page is for the older AVR Teensy...

    Indeed that page is for the older AVR Teensy units.
  23. Yes, doing that CPU_RESTART will reset the...

    Yes, doing that CPU_RESTART will reset the processor and enter setup() with memory and state restored the same as TyCommander's GUI Reset.

    A post in recent days linked to a memory monitoring...
  24. D+- only on the top of the PCB - where the...

    D+- only on the top of the PCB - where the factory USB connector was. As noted underpads are labelled as USB Host are not of use for Device programming.
  25. On the T_4.0 there are no exposed pins/pads for...

    On the T_4.0 there are no exposed pins/pads for the Device USB. There are D+/D- pads under the USB connector - but those are wired for USB Host port on the processor and won't help in programming.
    ...
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    Sticky: The other one supports higher version numbers...

    The other one supports higher version numbers where the security req's changed AFAIK .. Macintosh OS Software (10.10 - 11.x)

    It is IDE and TD ALL-IN-ONE
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    Sticky: Was the right IDE and TeensyDuino "all in one"...

    Was the right IDE and TeensyDuino "all in one" installer used? pjrc.com/teensy/td_download.html
  28. On Nano the Device USB shares the RX0 and TX0...

    On Nano the Device USB shares the RX0 and TX0 pins - but does not provide USB Host capabilities - those are UART serial pins, noted as required in p#2 to connect Teensy as a Device for RawHID...
  29. PJRC supported upload uses the Device USB port...

    PJRC supported upload uses the Device USB port through a RawHID connection for the programming upload.

    It has been done in some fashion using the USB Host port of a T_3.6 - at least was published...
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    Good to know. Makefile not used here - just knew...

    Good to know. Makefile not used here - just knew it was there.
  31. Mike - my bad this line : storage_index = '0'; ...

    Mike - my bad this line : storage_index = '0'; instead should be : storage_index = 0;
    > as written it doesn't work on first '1' - doh :(
    >> updated prior posted sketch

    Seeing the MTP get...
  32. Can see that MSC-test isn't the updated 'STORE:'...

    Can see that MSC-test isn't the updated 'STORE:' version? It is part of the MTP LIB ... should I do a PR? Not sure if the Integrity bits are wanted or needed in there?

    In making edits the Files...
  33. Mike posted an a version of MTP_TEST I've cleaned...

    Mike posted an a version of MTP_TEST I've cleaned up a bit for integrity testing.
    > storage_index is static/global so it persists between calls to #1 and #2
    > #2 takes a drive #, but #1 does not :...
  34. In above p#537 bigFile() as written tried 25MB on...

    In above p#537 bigFile() as written tried 25MB on LittleFS PROG and fails
    > "B" results in a ZERO size file
    > file cannot be deleted with 'b'
    > 'l' still shows 0_bigfile.txt sz=0
    --> Not sure...
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    Seems right - that is a lot of work around, that...

    Seems right - that is a lot of work around, that makes sense as demo'd - but isn't needed if the static values in the code don't carry over from one .begin to the next.
  36. Not sure what this is trying to tell me?: !! Try...

    Not sure what this is trying to tell me?: !! Try installing BUILTIN SD CardaddFilesystem: 0 sdio 2000ca14


    if(cs[ii] == BUILTIN_SDCARD)
    {
    DBGSerial.printf("!! Try...
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    Or the sketch can ignore the first reading after...

    Or the sketch can ignore the first reading after the change:


    #include <FreqCount.h>

    int incr;
    bool firstRead = true;
    int myFreq = 1000000;

    void setup() {
  38. Elapsed micros is just a 32 bit unsigned integer...

    Elapsed micros is just a 32 bit unsigned integer with some operations on it involving simple math operations - so using it in an _isr will use some cycles - but not do anything unsafe and extreme.
    ...
  39. You mean that line #28 ... no I did not do that...

    You mean that line #28 ... no I did not do that before :) --- didn't even remember to 'Save' the <Edit> above before I ran to do errands ...


    Dump Storage list(8)
    store:0 storage:10001 name:sdio...
  40. I got those two and it seemed well for MTP - from...

    I got those two and it seemed well for MTP - from post #528 above:


    Using library MTP_Teensy at version 1.0.0 in folder: C:\T_Drive\tCode\libraries\MTP_Teensy
    Using library USBHost_t36 at...
  41. My first sketch was the Kurt2Files old variant -...

    My first sketch was the Kurt2Files old variant - and it failed - that goes to SD IIRC ... just back from visit in time for lunch ... will try that again.

    Argggh - ... something else ...
  42. Will keep that in mind - seems I tried something...

    Will keep that in mind - seems I tried something that and still empty.

    Will be rebuilding with new debug version soon. Changing links over for sublime to clean new IDE/TD folder slowed me down....
  43. Indeed - p#528 noted I got a working build with...

    Indeed - p#528 noted I got a working build with just those two. Failure before beta 3 was trying to assemble the various parts.

    Got the MTP update - will move over and build.


    Working in...
  44. Mike: > in that sketch flash5 defined and not...

    Mike:
    > in that sketch flash5 defined and not used
    > flash6 used but not defined
    --> seems okay changing to :: LittleFS_SPIFlash flash6;

    Looks like it just needs MTP and USBHost_t36

    ...
  45. Thx Mike! I see that propagated to Kurt's MTP...

    Thx Mike! I see that propagated to Kurt's MTP and will get to it.

    Now running TD 1.56 b3: Given the CORES update what is the set of WIP from github that is needed to get all the WIP code to work?
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    Fresh IDE 1.86 unzip to assure no leftover and...

    Fresh IDE 1.86 unzip to assure no leftover and Win install of TD 1.86 beta 3 : No issues.
    > Only Windows security note was for JAVA access for the new IDE 1.86 install to be allowed.

    Plugged in...
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    There is a makefile for Teensy 4.x in :: {local...

    There is a makefile for Teensy 4.x in :: {local install}\hardware\teensy\avr\cores\teensy4\Makefile
  48. What version of TeensyDuino? Try version 1.55 if...

    What version of TeensyDuino? Try version 1.55 if not using that or the 1.56 beta already.

    Is the Teensy showing signs of a restart after like 8 seconds?

    It may be suffering a detectable Crash...
  49. Hopefully Beta 3 delayed enough to make gathering...

    Hopefully Beta 3 delayed enough to make gathering these worthwhile:

    cores - master branch :: github.com/PaulStoffregen/cores
    SD - Juse_Use_SdFat branch :: KurtE/SD/tree/Juse_Use_SdFat
    SDFat -...
  50. On the way to get gas thought : I should try...

    On the way to get gas thought : I should try writing a file to the Teensy drives from Windows.

    All 4 T_4.0 drives ( showing 'no files' ) : All four gave Windows Chime noise but no UI

    On T_4.1 :...
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