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  1. Thanks @WMXZ - Yes it is missing in the ::...

    Thanks @WMXZ - Yes it is missing in the :: "...\libraries\uSDFS\examples\logger_RawWrite\logger_RawWrite.ino"

    it works for me adding those lines after this as follows:


    // use following lines...
  2. Using MSC to test USB Host on T4 with...

    Using MSC to test USB Host on T4 with Looger_RawWrite test and keep having to add this code:


    #include <USBHost_t36.h>
    extern USBHost myusb;
    USBHub hub1(myusb);
    USBHub hub2(myusb);


    Would...
  3. The supported tool T4 chain is IDE with...

    The supported tool T4 chain is IDE with TeensyDuino Installer Arduino - but I saw this post that may relate to emulating what the EVAL board use::...
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    I know I ran the one display (st7789) in a thread...

    I know I ran the one display (st7789) in a thread to 48 to 64 and saw faster throughput up to that speed on T4. It was hardcoded lower - probably to device spec - but going to a supported multiple...
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    USB Audio will come online - reference to those...

    USB Audio will come online - reference to those CS42448 posts was to see what was already working on T_3.6 as that ideally will be fully T4 supported. There is an OSH board among those references in...
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    Paul - reading the SerMon blogpost - good notes -...

    Paul - reading the SerMon blogpost - good notes - lots of good work - glad I could help that progress.

    One more thing from reading that: I don't suppose it would be trivial to create and make...
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    Good to see KurtE provides good test/answers too...

    Good to see KurtE provides good test/answers too :)



    Thanks Paul, that Pin #36 got 'shocked' somehow - unless my solder cleanup reduction reflow fixed something that was bridged - because it...
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    TallDog Beta T4 Breakout : USB HDD within a POWERED HUB

    TallDog Beta T4 Breakout : USB HDD within a POWERED HUB ( orinco unit tested on MSC thread - 'logger_RawWrite' )

    WORKS at 8 MB/s with 8K(*4) buffer and 12.8 MB/s bumping to 16 or 24 K DWORD...
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    On this post you can see what Paul tested with -...

    On this post you can see what Paul tested with - scrolling down to Parts List shows part #'s :: pjrc.com/breakout-board-for-teensy-4-0/

    There are other posts relating to this - just posted this...
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    Found Paul's freq change T4_Beta post #2443...

    Found Paul's freq change T4_Beta post #2443 updated for 1062 in FAST IO mode. Included here in updated code with a mod - when xx=2 at file top. Two other modes noted in code, xx=0 is the initial...
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    Adding flux or solder to heat both ends at once...

    Adding flux or solder to heat both ends at once from the side … it might push or lift off

    This works to see about 0.4V between pins. But using Hz measure on that Meter mjs513 also got the same...
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    #36 is CLK on SD - that seems wrong for SDIO use....

    #36 is CLK on SD - that seems wrong for SDIO use. Would be okay for SPI2 CS2.
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    Good'ish news. That is the first note I've seen...

    Good'ish news. That is the first note I've seen of SD card that close to working.

    Cross posted above - took a break between start and finish it seems.

    Without soldering the cover tabs I see the...
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    After pulling the cover and reflow and wick...

    After pulling the cover and reflow and wick 'extra' solder from the SD socket pins - I have not seen the 'While() Halt' or any funny numbers since that 'cleanup'.



    Odd - I see #36 has a bottom...
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    searching for code and links is a pain - #191...

    searching for code and links is a pain - #191 notes it is in #178. Here is an attach of the current wrapped in quote to stand out
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    FIRST NOTE: I asked on T4 Beta thread if USB D-...

    FIRST NOTE: I asked on T4 Beta thread if USB D- is actually NEG voltage and KurtE replied as tested it is differential voltage - but not negative voltage on USB D-. So that doesn't explain my #36...
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    Thanks Kurt. About to post on linked thread -...

    Thanks Kurt.

    About to post on linked thread - Pulled off the metal Cover on the SD socket and my test is running more reliably now from 100Khz to 10 Mhz ? SD socket has #36 between 3V3 and GNS -...
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    I put my SD cover plate on and hit with solder -...

    I put my SD cover plate on and hit with solder - will see if I can wick it off. @mjs513 - does the cover plate fit on and off with the Flex connector installed? It is close - but since I soldered it...
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    Thanks - I ordered and have M3 - those are M2 and...

    Thanks - I ordered and have M3 - those are M2 and I put a White/Black combo in my cart.
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    @Paul - Quick question: Is it correct that the...

    @Paul - Quick question:

    Is it correct that the 'Host USB D-' pin will output a negative voltage? And would having a pin like #36 bridged to that USB D- pin in use be expected to perhaps impair...
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    Looking at SerMon - it was running many times...

    Looking at SerMon - it was running many times with proper numbers for counts!
    Plug in an SDHC card and it stops on the '5' read of Pin36 ... unplug and it resumes ... plug in and stop cycle repeats...
  22. Thanks - I made a note of the '...2BAD' location...

    Thanks - I made a note of the '...2BAD' location - to get back to.
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    Good to hear :) Funny how it isn't until 1-2AM...

    Good to hear :)

    Funny how it isn't until 1-2AM (sleep time) that I get around to figuring out the next step or the code I want to write …

    So that ran overnight and I see a variety of results in...
  24. … curious if Paul is thinking of the next Teensy...

    … curious if Paul is thinking of the next Teensy or a shield for T4 that has no DAC's ...
  25. With a line like this before printing it will...

    With a line like this before printing it will allow 4 seconds for SerMon to connect :: while (!Serial && millis() < 4000 );

    With the delay(5000) as shown it will work the same way and USB Serial...
  26. If a single FFT4096 is not working like in prior...

    If a single FFT4096 is not working like in prior posts then something must be missing/wrong AFAIK.

    Using 'averageTogether' with a larger number was only to help when trying multiple large FFT's -...
  27. Does the Bt module output data continuously? ...

    Does the Bt module output data continuously?

    As noted in p#2 'if (Serial1.available())' shows how many characters are waiting from input to Seria1.

    Is this the desired test or is this just to...
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    Just got as far as putting PWM to test on...

    Just got as far as putting PWM to test on 34,35,36 that are Jumpered to 37,38,39 for digital read testing on the PCB edge where I put a female header.

    I run a pass of that then swap the halves to...
  29. Looking at another post for FFT256 the other day...

    Looking at another post for FFT256 the other day I was reminded it does 'naverage = 8;' for that size FFT.

    Was wondering is a call to this with a number of 2 or 4 :: averageTogether(uint8_t n)...
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    Opps - I asked about that a time or more because...

    Opps - I asked about that a time or more because koromix will need to see it for the T4 time transfer during upload.

    Recently found the github source and saw this August 11 Issue:...
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    Look through this thread for USB devices...

    Look through this thread for USB devices tested and working - as noted easy on T_3.6 as it ships soldering a simple cable ( available from PJC or other ) - and much of that was tested on the Teensy 4...
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    I hadn't read the BLOG - @wwatson - thanks for...

    I hadn't read the BLOG - @wwatson - thanks for hinting to look for this :: pjrc.com/improving-arduino-serial-monitor-performance/

    And also that is an interesting observation - Indeed I haven't...
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    An adapter to fit wasn't found/planned - it would...

    An adapter to fit wasn't found/planned - it would collide with the USB Host pins. It allows a ribbon to pull the pins out. Look here breakout-board-for-teensy-4-0 - about the 7th pic down with...
  34. @Jean-Marc: Please do. I could use it as a test...

    @Jean-Marc: Please do. I could use it as a test for my debug_tt to enable FAULT detect and see how it might be handled. Might be an good enough reason to get back to that and make it generally...
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    Post #7 gave notes on the explicit p#11 code. ...

    Post #7 gave notes on the explicit p#11 code.

    In setup() just add :: set_arm_clock(300000000);

    Pick the desired Hz and the code will pick the workable freq near that. Also in p#7 is this to...
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    GOOD NEWS - I HAVE MY USB BACK with the TallDog...

    GOOD NEWS - I HAVE MY USB BACK with the TallDog T4 direct pinned breakout I assembled.

    I was thinking if I put flux on my desolder braid I could pull off all the solder and lift the Flex cable -...
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    Yes, there it is - it has a link to TRNG ::...

    Yes, there it is - it has a link to TRNG :: https://forum.pjrc.com/threads/54711-Teensy-4-0-First-Beta-Test?p=195000&viewfull=1#post195000

    To link to a specific post - right click on the post # -...
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    Those sketches have likely not been updated for...

    Those sketches have likely not been updated for Teensy 4 hardware registers. Have to check the Beta Teensy 4 thread to see if there is a note
  39. Thread: Bum 3.6?

    by defragster
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    I found the odd unit here when I ordered the KS...

    I found the odd unit here when I ordered the KS Bulk pack. Just pulled each from shipping and upload sketch and button pushed in some fashion - one acted odd but I dismissed it as user...
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    Search forum for "CS42448" - there were notes...

    Search forum for "CS42448" - there were notes about it being used in some fashion that may be a starting point.

    But indeed only USB Serial is working on T4 at this time
  41. Indeed only 2 sets of 512KB - 1.5 MB would be...

    Indeed only 2 sets of 512KB - 1.5 MB would be cool … maybe the next version.

    Never filled the filled the first 512KB of RAM and had T4 halt/not boot? If you have a repro case I wonder if there is...
  42. Thread: Bum 3.6?

    by defragster
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    I started to reply with the only test that came...

    I started to reply with the only test that came to mind - beyond soldering issue.

    Before soldering was there a series of uploads and button presses done to say if 'normal' behavior was seen from...
  43. Nice looking work! AFAIK the answer to this is...

    Nice looking work!

    AFAIK the answer to this is : Using DMAMEM provides compile time alloc to the same area that malloc() uses at runtime - the second 512KB RAM block.
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    For the cable - taking drawing above for a quick...

    For the cable - taking drawing above for a quick hack in paint - removing the 3v3 and GND would help with the trouble observed here - and particularly the lockups maybe it wasn't a current problem...
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    I can confirm that @KurtE - no selection when...

    I can confirm that @KurtE - no selection when offline.

    Also BATCH #3 of Teensy 4.0 must have been a BIG one - and #1 and #2 none too small. SparkFun has this on that item::
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    Reading of the Flex Connector loose fit I wasn't...

    Reading of the Flex Connector loose fit I wasn't going to use - but mine locked in tight - no wiggle - no play, so I soldered it … have since removed it :(

    So far the 15 second Restore is...
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    @loglow - safe travels. Standoffs sound...

    @loglow - safe travels. Standoffs sound outstanding, the ones I have are too large for the holes provided.

    I didn't get back to the iron to check on USB line(s) I lost - will be another day - they...
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    @firehopper - those resistors are only needed or...

    @firehopper - those resistors are only needed or used when the indicated BUS ( i2c or SPI ) actively uses those pins and the resistors apply a pull-up for those pins. If those pins are put to other...
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    Using a Teensy 3.2, 3.5, 3.6 to prototype you can...

    Using a Teensy 3.2, 3.5, 3.6 to prototype you can start working immediately - Teensy 4.0 support will arrive ASAP and should be expected to be compatible when complete.

    At this time Teensy 4.0...
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    mod PinTest was hidden as attachment in p#93...

    mod PinTest was hidden as attachment in p#93

    T4 breakout dried overnight and seeing pin 37 showing 700 Ohms to 3V3 and pin 36 now at 5K Ohms to 3V3. Pin #36 looks much better.

    Pin #36 not on...
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