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    That EEPROM structure monitor program is linked...

    That EEPROM structure monitor program is linked in this post : forum.pjrc.com/threads/57377-TEENSY-4-0-EEPROM-amp-RAM-Questions - also some other notes there re; eeprom code
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    'Key Features' table on this page :...

    '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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    Does the T_4.0 have an RTC battery installed? ...

    Does the T_4.0 have an RTC battery installed? There are a couple of RTC storage bytes that maintain value across shutdown and reset as long as power it maintained.

    Those would allow continuous...
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    Indeed - seems one big benefit is having a data...

    Indeed - seems one big benefit is having a data collector/displayer busily doing those tasks fitfully as needed, and allowing the other processor keep heads down processing ready data and generating...
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    vimeo.com/455856456 (https://vimeo.com/455856456)...

    vimeo.com/455856456

    interesting
  6. Flagged other duplicate post back to here ... ...

    Flagged other duplicate post back to here ...

    DC should work as any digital pin not otherwise used.

    More info would be needed about display and connections overall - and some code perhaps - to...
  7. Maybe flash uses block size over 1024 and...

    Maybe flash uses block size over 1024 and programming fails?

    Indeed - already copied post #3 above about website to the web edit needed thread.
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    From post about teensy_loader_cli ... web and...

    From post about teensy_loader_cli ... web and github missing T_4.1 support
  9. That's what I saw that showed it 'missing' - but...

    ...[/QUOTE]

    That's what I saw that showed it 'missing' - but the HTML page is lacking too.

    Also haven't seen the 'Pass PC time to Teensy during upload for RTC' exposed for T_4.x so koromix can...
  10. not seeing a posted Windows binary - or as part...

    not seeing a posted Windows binary - or as part of TD install.

    This doesn't have T_4.1 support :: pjrc.com/teensy/loader_cli.html

    And it isn't here either:...
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    T_3.5 and later went to through hole micro USB -...

    T_3.5 and later went to through hole micro USB - and looking the holes are not solder 'filled'. So connectors 'falling' off from use or abuse was easier on T_3.2 and before.

    Somebody posted of...
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    Not much is known about the chip - except to Paul...

    Not much is known about the chip - except to Paul under NDA. Not even if the two cores can run the same compiled code with one an M4 and the other an M7 ? Or if they take two sets of...
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    Sorry - missed the initial post - but Paul posted...

    Sorry - missed the initial post - but Paul posted recently noting the USB Host connection is just that so far - even for general usage.

    Even if it someday can get configured for USB Device usage -...
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    All the sources are installed - using an editor...

    All the sources are installed - using an editor with folder search makes finding things easy:


    T:\arduino-1.8.13\hardware\teensy\avr\cores\teensy4\core_pins.h:
    1588 }
    1589
    1590: void...
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    More of Paul's good work at hand.

    More of Paul's good work at hand.
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    What about digitalToggleFast(0);? Does that...

    What about digitalToggleFast(0);? Does that compile differently?
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    Realized any big failure would render the rest of...

    Realized any big failure would render the rest of EXTMEM LOST after a single large failure, so when nullptr is returned on large alloc, undo the ptr* change that alloc would have used.

    Added some...
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    Seems to work adding to...

    Seems to work adding to ...\hardware\teensy\avr\cores\teensy4\imxrt1062_t41.ld:



    _seram = ADDR(.bss.extram);
    _eeram = ADDR(.bss.extram) + SIZEOF(.bss.extram);



    And edited code p#7...
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    not KurtE - but, no :: "Attachment 21728"

    not KurtE - but, no :: "Attachment 21728"
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    Yes, Controlled heap alloc from DTCM and ERAM...

    Yes, Controlled heap alloc from DTCM and ERAM would both be cool.

    For :: // TODO: set up for malloc_extmem()

    With edit to imxrt1062_t42.ld could the compile allocated size of EXTMEM be...
  21. Glad it is up and running!

    Glad it is up and running!
  22. So the issue then is the p#8 : with the...

    So the issue then is the p#8 :
    with the addition of the SD card, it started causing alot of problems. I re soldered my circuit board so that both of the HSC sensors are on SPI1 and the SD still on...
  23. Does the SD alone work when the pressure sensors...

    Does the SD alone work when the pressure sensors are removed?

    They should be independent - as long as they are wired right and the software only uses the proper pins and settings. Which is on...
  24. Just seeing this unanswered - was a solution...

    Just seeing this unanswered - was a solution found? ... don't have the answer offhand ...
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    For CODE run from FLASH best to use :: FLASHMEM ...

    For CODE run from FLASH best to use :: FLASHMEM


    myReturnType FLASHMEM MyFunction( MyParameters ) {

    Code for Function....

    }

    That is new and not yet shown on the T_4.0 memory page...
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    That was linked/noted in post #4 above ...

    That was linked/noted in post #4 above ...
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    Moving that image data from RAM to FLASH would be...

    Moving that image data from RAM to FLASH would be using:

    PROGMEM Variables - Variables defined with "PROGMEM" are placed only in the flash memory. They can be accessed normally.
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    That is not the hysteresis point which is at...

    That is not the hysteresis point which is at midrange - was just guessing not reading the plotted data values correctly.

    If the same code is done without Audio Library in use in a simple sample...
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    AFAIK - Others have done custom waveforms and...

    AFAIK - Others have done custom waveforms and other things during the code like:


    case WAVEFORM_SAWTOOTH:
    for (i=0; i < AUDIO_BLOCK_SAMPLES; i++) {
    *bp++ =...
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    I started to suggest that - but was already two...

    I started to suggest that - but was already two hours late for signing off. In fact when I did the pin change _isr() - USB printing worked .... that time.

    But only having "I have code that locks...
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    I see 15 names that clicked the link - lots of...

    I see 15 names that clicked the link - lots of repeat viewers ... just seeing the ping post here ...

    Indeed the T_4.x does not have a functional 'Reset' pin. Not sure about the On/Off comment? ...
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    NINE - if you count the RAM in PSRAM. There is...

    NINE - if you count the RAM in PSRAM.

    There is no provision to initialize or extend 'onboard RAM' directly onto the PSRAM chip. It is off chip and in non-contiguous address space - and runs not...
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    You are welcome and Welcome! Good luck with your...

    You are welcome and Welcome! Good luck with your project.

    The Teensy units are very likeable! The forum search until it moves to a new platform is a bit weak but Bing and Google keep good tabs...
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    See PaulStoffregen/teensy41_extram...

    See PaulStoffregen/teensy41_extram

    Note three branches with the last updated being :: PaulStoffregen/teensy41_extram/tree/SPIFFS-FLASH-ONLY
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    Yes, it definitely can support one of either...

    Yes, it definitely can support one of either chip.

    Don't have the address at hand - but it takes setup and while read is by direct address - write must use wrapper functions. The address and the...
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    Also not sure of using AnalogRead with audio...

    Also not sure of using AnalogRead with audio system?
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    See this post Teensyduino-1-49-Beta-4...

    See this post Teensyduino-1-49-Beta-4

    more notes on page 2 of that thread
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    That is perhaps the hysteresis break over point. ...

    That is perhaps the hysteresis break over point. It has been discussed before in other post(s)

    What version of TeensyDuino is installed? 1.53 is the current.

    Not sure if that was fixed on the...
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    ... have never looked into this before ... but it...

    ... have never looked into this before ... but it looks like ::

    Audio system works on a block of data fed through the system - the block is prepared as needed in 'advance' and then the system...
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    The same code for T_4.x would generally work on...

    The same code for T_4.x would generally work on T_3.x's { with F_CPU_ACTUAL changed to F_CPU }. The CycleCounter may need to be started if not in use, it is started before setup on the T_4.x's. The...
  41. Clicked thread link after posting, that is the...

    Clicked thread link after posting, that is the one I saw - they got it working in some fashion in the end of that thread - following those postings and posting questions or issues should be best
  42. There was a recent thread in past week or two...

    There was a recent thread in past week or two where T_4.x was at hand looking into this IIRC. Not sure where it stands ...
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    Teensy 4.x with the 1062 processor - installed...

    Teensy 4.x with the 1062 processor - installed with TeensyDuino.
  44. Not sure of the reference used for p#1? The...

    Not sure of the reference used for p#1?

    The code shows this - ...\hardware\teensy\avr\cores\teensy3\pins_arduino.h::


    #elif defined(__MK66FX1M0__)
    #define digitalPinHasPWM(p) (((p) >= 2 &&...
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    Update to T_4.x Memory page (...

    Update to T_4.x Memory page ( pjrc.com/store/teensy40.html ) and Compile time decoration for :: FLASHMEM .vs. PROGMEM

    See @KurtE :: pjrc.com/threads/62966-issues-on-program-with-large-dataset

    ...
  46. With delay(1000) that is not pushing much out USB...

    With delay(1000) that is not pushing much out USB so it shouldn't cause trouble there.

    In setup() add :: pinMode(LED_BUILTIN, OUTPUT);
    > Also add to make sure USB is online before the first...
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    The PSRAM with QSPI interface has direct...

    The PSRAM with QSPI interface has direct processor support for reading and writing into the memory space. It has a check for existence in startup.c - when found it is currently configured to work at...
  48. With that showing the Teensy is working to the...

    With that showing the Teensy is working to the bootloader chip - Not seeing any information suggesting the T_4.1 is burnt yet?
    This is an old unrelated thread for your situation - There are other...
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    This thread...

    This thread T4-software-restart-procedure-and-freeram-function is one where the On/Off pin was used for Teensy Restart.

    That was when the standard reset found to be in need of a PJRC fix...
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    The Teensy 4.x's do not have an exposed Reset...

    The Teensy 4.x's do not have an exposed Reset pin.

    There is a library using the On/Off pin. IIRC the code can set up a wake time min off time in ~2 seconds. Hitting the running T_4.x would take...
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