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    UPDATE LittleFS working properly :: Did wipe of...

    UPDATE LittleFS working properly :: Did wipe of IDE 1.8.15 folder and fresh unZIP and TD 1.54b10 install and LittleFS is fine DMAMEM/RAM2 for RAM_DISK

    Not sure what caused the build error - but...
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    Clean Install and all is well. Did 15 sec...

    Clean Install and all is well. Did 15 sec Restore of both T_4.0 and 4.1

    Win 10 : IDE 1.8.15 unzip : TD 1.54 B 10 install

    Using IDE and TeensyLoader and IDE SerMon.

    Various : 'B' and...
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    Okay - I need to clean something. Something...

    Okay - I need to clean something.

    Something not right in that it worked okay at first - until restart - then it started going wholly bad

    On the RAMDISK - does the restart noted here from the...
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    Temp is a spot temp internal to the MCU...

    Temp is a spot temp internal to the MCU somewhere, not what is apparent on the casing.

    50C doesn't sound awful - depending on the workload - and not running OC above 600 MHz. I haven't watched...
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    @TeensyDigital - TD 1.54 Beta 10 was released...

    @TeensyDigital - TD 1.54 Beta 10 was released with a change in startup that Paul saw cause troubles.

    Though something new and bad affecting the LittleFS sketch in use with Beta 10.

    @Paul /@all...
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    Switched to PSRAM ramdrive - 'B'igfile won't...

    Switched to PSRAM ramdrive - 'B'igfile won't complete there either? It hangs after some portion of the write.

    Button and TyComm/Reset has it start and dies early in setup() - next line would be...
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    Took out .flush that was not there before - can't...

    Took out .flush that was not there before - can't even write the Bigfile just now?

    It hangs and keeps hanging on restart until power off ... like DMAMEM adjustment changed how it works ????
    ...
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    Installed 1.54b10 and it works initially on T_4.0...

    Installed 1.54b10 and it works initially on T_4.0

    Seeing odd DMAMEM char buf[490000]; behavior - doing 'R'estart to test static RAM and hanging on restart?
    Saw it on beta 10 announce post ... but...
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    Installed td 1.54 b10 on Win 10 over IDE 1.8.15 -...

    Installed td 1.54 b10 on Win 10 over IDE 1.8.15 - Install good and no problems w/LittleFS LFSIntegrity onto T_4.0.

    Ramdisk note - Primary RAM / RAM1 is always zeroed on any restart to won't...
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    Post #10 showed PROGMEM for the constant image...

    Post #10 showed PROGMEM for the constant image that stays in FLASH.

    The code shown isn't a complete program - so I can't play with it directly and compile ...

    But it shows something that...
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    Not sure any use with threading was tested. SD...

    Not sure any use with threading was tested. SD card I/o uses interrupts or DMA perhaps and can complete its process without being on an active thread.

    LittleFS code is all direct action where it...
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    Are you sure? The T_4.1 has an 8MB Flash so a...

    Are you sure? The T_4.1 has an 8MB Flash so a decent amount of MB free after code. That could be pulled into PSRAM - the copy doesn't take any memory - just FLASH storage. If the data doesn't need...
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    Yes, something must be done ... See this link in...

    Yes, something must be done ...
    See this link in post #2 : pjrc.com/store/teensy41.html#memory

    As noted in that post #2 EXTMEM :: Usage of a 'variable' there will not be initialized { that is:...
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    Typed the text below before I checked that I am...

    Typed the text below before I checked that I am running 1.54b9 with *.LD's from 1.54b8!
    >> I had that thought and copied from the IDE 1.5.13 reinstall ... but apparently left before I built from...
  15. @pedvide provides the ADC library as a personal...

    @pedvide provides the ADC library as a personal external library included with teensyduino: github.com/pedvide/ADC/

    And issues could be made against that github for attention resolution in some...
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    post #853 - lfsintegrity using RAM1 or RAM2 -...

    post #853 - lfsintegrity using RAM1 or RAM2 - DMAMEM ( dammed :) ) - or EEPROM Program memory : didn't see it work ...
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    Installed TD Beta 8 over Beta 9 on IDE 1.8.13 and...

    Installed TD Beta 8 over Beta 9 on IDE 1.8.13 and LFSIntegrity.ino works on T_4.0:


    17:54:31.698 (loader): redraw, image 9
    17:54:40.819 (serialmon 6): Begin, version=1.54-beta8, high-res time...
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    TD 1.54 Beta 9 installed over IDE 1.8.13 beta 7...

    TD 1.54 Beta 9 installed over IDE 1.8.13 beta 7 {working in poist #852}:

    Same sketch EPROM DISK of 1MB :: #define TEST_PROG with if (!myfs.begin(1024 * 1024 * 1)) {

    FAILS to start the T_4.0...
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    Opened IDE 1.8.13 with TD 1.54 b7 and it builds...

    Opened IDE 1.8.13 with TD 1.54 b7 and it builds and runs with 1MB :: LittleFS_Program myfs;

    I'll install 1.54 b9 over that IDE 1.8.13 and see ...
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    I have an ADC sketch running on a T_4.0 and I...

    I have an ADC sketch running on a T_4.0 and I rebuilt that to work.

    Tested the ASCIITable to build and run on T_4

    The LittleFS_Program sketch certainly should not use any of the _RAM code...
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    Won't work here either with RAM that fits or...

    Won't work here either with RAM that fits or DMAMEM???

    Not sure when a T_4.0 may have been tested last?

    With 1.9MB free on FLASH it won't run with a 1MB LittleFS_Program either?
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    PR made for LittleFS to reMount RAM disks that survive a Warm Restart

    From thread : pjrc.com/threads/67500-Another-PSRAM-option-Lyontek

    This :: github.com/PaulStoffregen/LittleFS/pull/12
    >> Note PR was merged as this post was saved - so look for this in TD 1.54...
  23. Done - will move to LittleFS thread with...

    Done - will move to LittleFS thread with github.com/PaulStoffregen/LittleFS/pull/12

    And put notes there ...
  24. Not looking to change the .ld - just checking if...

    Not looking to change the .ld - just checking if it had a named element that was usable - and not seeing it.

    Github is a royal PIA - takes about as long to manipulate it for a PR as to make the...
  25. Left me confused ... too long since touching...

    Left me confused ... too long since touching LittleFS - I did a sync from github and I have this :: bool lowLevelFormat(char progressChar=0, Print* pr=&Serial);
    Seemed to match with td1.54 b9 as I...
  26. Just noted my github is a mess ... I seem to...

    Just noted my github is a mess ... I seem to have some included KurtE change to pass in *Serial? for output redirect?

    That had nothing to do with the change at hand though ... going to look at...
  27. bored ... i KNEW that wasn't the case :) I...

    bored ... i KNEW that wasn't the case :)


    I see it as viewed now but here is the current version with the no flush on RAM1 : 25062

    Tested here with LFSIntegrity.ino - not sure if there were...
  28. Thanks Paul - You are correct! ... an hour...

    Thanks Paul - You are correct!

    ... an hour later I just now see your post and see I went the right direction ... and have it working.

    The other half of the change is to not assume the RAM disk...
  29. @KenHahn - sorry for polluting your thread ......

    @KenHahn - sorry for polluting your thread ... Though it does IMHO greatly increase the value/utility of popping PSRAM chips onto T_4.1's knowing that when possible data is preserved.

    Paul - Mike...
  30. @mjs513 - if you are bored and want to have some...

    @mjs513 - if you are bored and want to have some fun - let me know if you can give this a try.

    With p#16 code the drive FS appears to survive to LFSIntegrity standards where lfs core code does all...
  31. Below should be the extent of the changes for...

    Below should be the extent of the changes for 'static' RAM ( PSRAM and DMAMEM/RAM2 ) LittleFS to survive device Warm Restart/Reset

    I can make a PULL REQUEST : Here is the edited file :: 25061
    ...
  32. Thanks, Might have been browser spasm here - was...

    Thanks, Might have been browser spasm here - was typing a reply and 'focus' was not in the post area ... may have tabbed back and had focus on that check box ... opps.


    Tested against RAM2 ::...
  33. Oh yeah - That was Paul on Release Day ... ...

    Oh yeah - That was Paul on Release Day ...

    Yes, SPIFFS is a forgotten memory ... but I do recall ... IIRC ... it survived warm restarts as written.

    @Paul this could improve the usability or...
  34. @mjs513 - I see above code does duplicate Mount...

    @mjs513 - I see above code does duplicate Mount as written ... but it works ... and gives the Idea


    if (lfs_mount(&lfs, &config) < 0) {
    memset(ptr, 0xFF, size); // always start with blank...
  35. @mjs513 - running test noted p#4 - when a...

    @mjs513 - running test noted p#4 - when a 'R'estart the myfs fails to survive?

    Across a warm restart the EXTMEM/PSRAM image will be present ...

    It seems - IIRC - SPIFFS on PSRAM would survive...
  36. Hi Ken - Had to look up 'Electronic Manufacturing...

    Hi Ken - Had to look up 'Electronic Manufacturing Services for Defense & Military' ... Ambulances and Firetrucks for E.M.S. didn't match with Space and Military :)

    This chip drought is really...
  37. @KenHahn > Good news for an available and...

    @KenHahn > Good news for an available and alternate chip!

    That chip is not an alternative mentioned here :: https://www.pjrc.com/store/psram.html

    Paul made a note somewhere recently about the...
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    The Export from the Audio Tool only defines the...

    The Export from the Audio Tool only defines the parts needed for the Audio code to function.

    The actual sketch as noted with setup() and loop() are needed to provide the actual code.

    Look at...
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    That is Awesome news - I 90% alcohol toothbrush...

    That is Awesome news - I 90% alcohol toothbrush mine before trusting them - then a quick hairdryer blow dry as much as my hand can stand a few rotations.

    Not the first to report error from "flux...
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    No, the QSPI pins are unique and routed only to...

    No, the QSPI pins are unique and routed only to those pads from MCU specific hardware that does the QSPI control. They are valid pins for other use { when not using them as QSPI, except the 'other'...
  41. Not that anyone asked - but for another purpose -...

    Not that anyone asked - but for another purpose - the post#2 code for T_4.x NVRAM was updated to do the same for T_3.x's.

    Tested this to work on :: T_4.1 and T_3.6 and T_3.0 { should work on...
  42. Good you uploaded the Verbose - Paul might scan...

    Good you uploaded the Verbose - Paul might scan it.

    If it won't program that is not right, but one the button is pressed it will never show a COM port - it goes into HID mode for bootloader.
    ...
  43. Not clear what is going on there ... Assuming...

    Not clear what is going on there ...

    Assuming the cable used for the working T_4.1 is also used when plugging in the other one?

    Unplug all the Teensys.

    Have the IDE open with a simple BLINK...
  44. Assume you are referring to this wiki ::...

    Assume you are referring to this wiki :: github.com/TeensyUser/doc/wiki


    @luni - is there a place for this in the Wiki?

    Looks like the equivalent for T_3.x is :: {local...
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    Indeed it is: int lfs_mkdir(lfs_t *lfs,...

    Indeed it is:


    int lfs_mkdir(lfs_t *lfs, const char *path) {
    LFS_TRACE("lfs_mkdir(%p, \"%s\")", (void*)lfs, path);
    // deorphan if we haven't yet, needed at most once after poweron
    ...
  46. The #defines and details needed to build for...

    The #defines and details needed to build for T_4.x's 1062 MCU are in this 9,000+ line file installed with TeensyInstaller:

    {local arduino}\hardware\teensy\avr\cores\teensy4\imxrt.h
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    Anyone looking for File System support on Teensy...

    Anyone looking for File System support on Teensy FLASH chips note that LittleFS is included in pjrc.com/threads/67252-Teensyduino-1-54-Beta-9

    Using that version has the needed libraries to have it...
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    Great news @zlatkoh1 ! Congrats on the...

    Great news @zlatkoh1 ! Congrats on the soldering to work and great to hear the LittleFS library is working for another!





    It is a LONG thread of 34 pages ::...
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    When using TD 1.54 b9, or after, SdFat is...

    When using TD 1.54 b9, or after, SdFat is included with the TeensyInstaller.

    Remove local copies of that library from build paths.

    SD.h has been reworked to map into SdFat.

    But the full...
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    issue is not println or cout - it is added code...

    issue is not println or cout - it is added code and perhaps enclosed strings taking program memory.

    See line #1 of p#2 and in IDE ( Ctrl+, ) enable :: ...'verbose' output on compile
    > output...
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