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    Any chance it is running short of power? No doubt...

    Any chance it is running short of power? No doubt you are seeing the RF Noise - just wondering ... Also - What is the satellite transmission freq?

    Years back running GPS and IMU I could power...
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    The Hacksoace #39 magazine (free download) PDF...

    The Hacksoace #39 magazine (free download) PDF link before has 15 pages of PICO images and details and an then interview/pics with the raspberry Boss on pages 54 to 61 (for 2 pages of Q&A). They...
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    Yes as noted by @thebigg - the closing brace...

    Yes as noted by @thebigg - the closing brace wasn't respected on setup() and you can't put a loop() function inside of another function and have it work.

    If "Ctrl+T" had been done it would have...
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    Actually search engines have a very specific set...

    Actually search engines have a very specific set of syntax for advanced searches that return MUCH better results ... but nobody knows or uses them.

    C is simple the bestest most awesomest language...
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    Use of loop() is optional, but including it is...

    Use of loop() is optional, but including it is required because 'Arduino' rules say so - it will be called and as empty do nothing - except return and then be called again ... some Millions of times...
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    In this case the "const int x;" was a problem as...

    In this case the "const int x;" was a problem as noted in the compiler output - it is an unchanging constant value with no initial value.

    It shows twice perhaps because the line has two...
  7. See this post thread for PJRC notes :...

    See this post thread for PJRC notes : List-of-supported-Audio-Lib-Hardware?p=267309&viewfull=1#post267309

    Does that relate?
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    @mjs513 re : "That was first question here " I...

    @mjs513 re : "That was first question here "

    I meant that was my first question on seeing post#101 ... thought there might be something useful of import ... all that occurred to me was the 'unique...
  9. @luni - thanks for link/post - had seen it posted...

    @luni - thanks for link/post - had seen it posted once ...
  10. Yes, that is indicated here from the above :...

    Yes, that is indicated here from the above : github.com/luni64/TeensyTimerTool/wiki/Callbacks#lambda-expressions-and-callbacks-with-context
  11. Looking here :...

    Looking here : pjrc.com/teensy/td_timing_IntervalTimer.html

    The called function takes no parameters: myTimer.begin(blinkLED, 150000); // blinkLED to run every 0.15 seconds

    to call :: void...
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    Not finding a 'Single RP2040' purchase item. ...

    Not finding a 'Single RP2040' purchase item.

    But I do see the REAL cost of buying bulk PI ZERO's - versus the buy one only loss leader purchase of $5 or $10:
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    Funny Paul :) They have 2400 in stock - but...

    Funny Paul :)

    They have 2400 in stock - but have to be bought in groups of "480 $4.00002 $1,920.01"
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    @mjs513 That was first question here ... seems so...

    @mjs513 That was first question here ... seems so as there was to have been a RED LED indication powered with or without USB Connect when charge only cable is present. I could never trigger it as...
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    What fun ... or work. Two virgin parts means one...

    What fun ... or work. Two virgin parts means one test per board where MCU and the FLASH both get altered to limit re-use. Fuses not locked and not write protecting the upper FLASH could allow...
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    Encrypted boot is a follow on evolution after new...

    Encrypted boot is a follow on evolution after new bootloader work on this thread :: Bootloader-Chip-For-Teensy-4-0
    >> Reading through that thread Paul has posted on the current bootloader work and...
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    Wow - that is tedious grief to work through! ...

    Wow - that is tedious grief to work through! Such subtle issues WE never see ... even on Beta test units you've gotten over all those issues ... well except the 'white wire' one which was easy to...
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    The thing is indeed underpowered - but .vs. a 48...

    The thing is indeed underpowered - but .vs. a 48 MHz T_LC it has much more RAM and FLASH and plus two usable cores at 133 MHz.

    This RP2040 is way better than any AVR used for Teensy - how does...
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    It takes some measurable time to make the change...

    It takes some measurable time to make the change in clock speed. Checked it once some time back - but forget the numbers. It does have embedded while( wait for CPU makes change ); that are not...
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    Thought I saw that noted ... so writing to RAM2...

    Thought I saw that noted ... so writing to RAM2 first would allow it to show on warm restart - but going to power down OFF losing RAM2? Maybe 'abuse' those RTC RAM bytes in case they are preserved?
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    And another FREE PDF MAG ::...

    And another FREE PDF MAG :: raspberrypi.org/articles/programming-raspberry-pi-pico-with-python-and-micropython {nothing PICO in this issue - Opps or the blog}


    Raspberry Pi Pico is programmed...
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    Indeed - when it gets PANIC hot it goes too fast...

    Indeed - when it gets PANIC hot it goes too fast and off without notice as I saw. Seemed some print was noted as added - maybe a hook of the WARN temp could add a log entry? But hooking and handling...
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    "That's" a bit vague? Is the point that starting...

    "That's" a bit vague? Is the point that starting support ASAP make Teensy the natural alternative?

    There is already at least one book published on the PICO - changing those things would be...
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    Indeed it could be a chip that works well up to...

    Indeed it could be a chip that works well up to SPEC speed but has some temp/speed sensitive anomaly going OC.

    Adding a tempMon() print might show something.

    Putting a FAN on it will drop temp...
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    The 'download' link in p#5 notes which versions...

    The 'download' link in p#5 notes which versions of the IDE are supported. For supported versions the installer maintains the needed java files to complete a working install on those known versions....
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    Is this on Windows or other? See this page for...

    Is this on Windows or other?

    See this page for OS specific details in any case : pjrc.com/teensy/td_download.html

    If Windows was it a ZIP or Installer from the Arduino site? Windows Store...
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    ... crossposted as I was unzipping and confirming...

    ... crossposted as I was unzipping and confirming for post #13.

    TeensyDuino only works when and because it modifies the JAVA code installed with the indicated installs - that excludes the Windows...
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    Not sure if this relates or helps? Just did a...

    Not sure if this relates or helps? Just did a fresh UNZIP to :: Directory of T:\arduino_1.8.13_td154Port\
    Created :: Directory of T:\arduino_1.8.13_td154Port\portable

    Opened the IDE and The...
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    Don't see set_arm_clock() disabling interrupts -...

    Don't see set_arm_clock() disabling interrupts - but clock and voltage changes might cause chip interruption/stall to DMA or other timing/processing?
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    As noted it is 'code' and indicated by FrankB -...

    As noted it is 'code' and indicated by FrankB - from raspberrypi.org/documentation/pico/getting-started/
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    SparkFun has it and three Pre-Order variations:...

    SparkFun has it and three Pre-Order variations: $10 Micro, $12 MMOD, $16 Thing+ using the RP2040 MCU.

    Interesting speed but M0+, and "264 kB of embedded SRAM in 6 banks"

    Shared code style might...
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    Yes, just back to desk and I see email arrived. ...

    Yes, just back to desk and I see email arrived. Will be a couple hours and I'll give it a look. 107 is free here ...
  33. Thought so - but had to ask if is was near done...

    Thought so - but had to ask if is was near done and might line up with TD 1.54 now it is incorporated for awesome improvement - those write rates in P#33 are better than the old SD read rates.
    ...
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    Started to write ... that but the p#6 SNIPPET...

    Started to write ... that but the p#6 SNIPPET showed attachInterrupt() after pinMode()'s there - yes - that is how it should be done
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    Great news Paul - big difference supporting a...

    Great news Paul - big difference supporting a known system with (fixed) BOM for in house builds - versus supporting a generic range of items like FLASH chips.
  36. @Bill Greiman - is there a feel for the...

    @Bill Greiman - is there a feel for the coincidence of the 2.0.5 b1 timeline being weeks away from release that might coincide with TD 1.54 for use as SD.h ? ... both of course being unknown? Or is...
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    Snippets are usually a distraction - better to...

    Snippets are usually a distraction - better to have the whole code posted if it can't be cut down to a smaller sketch that effectively shows the problem - that's why this :: Forum Rule: Always post...
  38. Not indicated how many RGB LED's are in use? A...

    Not indicated how many RGB LED's are in use? A photo showing the connections might help.

    Quick guess based on something observed here : that GND wire may be feeding large return current through...
  39. With this edit in...

    With this edit in ...\hardware\teensy\avr\libraries\SdFat\src\SdCard\SdioTeensy.cpp:


    static void enableGPIO(bool enable) {
    const uint32_t CLOCK_MASK = IOMUXC_SW_PAD_CTL_PAD_PKE |
    #if...
  40. Good luck, if you get a working example posting...

    Good luck, if you get a working example posting it may help others and show how to use this feature.

    Had hope that AN would show the 'enable' KurtE mentions, even if for wrong processor - if it...
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    My EE buddy did that for a high school science...

    My EE buddy did that for a high school science project in 1980. Put his TRS-80 on a wheeled robot platform he built - focused light on an open top chip and navigated based on the chip's view of the...
  42. First glance it should be easier on the 1062 with...

    First glance it should be easier on the 1062 with external flash? As long as all needed code for the Flash writes is RAM resident - which user code is by default. But again that is not how the...
  43. As noted in p#6 - Frank personally wrote such a...

    As noted in p#6 - Frank personally wrote such a 'code from SD' - so that was based on experience doing that and a great understanding of the Teensy programming process, not a coin toss - or anything...
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    Quick note - the T_4.0 doesn't have a separate...

    Quick note - the T_4.0 doesn't have a separate AGND - so the other note to 'throw in another' would be needed.
  45. Not seen this come up before - but did find this...

    Not seen this come up before - but did find this app note for a different freescale/NXP processor : nxp.com/docs/en/application-note/AN5245.pdf

    If the 1062 can support it as desired those notes...
  46. not crushed, i.e. discarded without reason - just...

    not crushed, i.e. discarded without reason - just noting a few hurdles making it non-trivial. One of which is the bootloader has one function and limited connectivity only to processor and none to...
  47. Tested to work - Using a T_4.0 with...

    Tested to work - Using a T_4.0 with loglow/TallDog T_4.0 board PCB to present SDIO pins to an SD socket.

    That does not have PSRAM - but with reduced BUFFER it will use processor memory instead...
  48. Indeed - even if that were a supported way to...

    Indeed - even if that were a supported way to upload - where today it only via USB upload - it would take some orchestration overhead to ONLY do it once and not reProgram every time if the SD card...
  49. Added #ifdef note to the PR on the Greiman...

    Added #ifdef note to the PR on the Greiman repository ... tested compile on T_4.1 - but not to run on T_4.0
  50. Indeed that change makes this work in setup(): ...

    Indeed that change makes this work in setup():


    while(runTest(1));


    So this need changed and also the :: "#if defined(ARDUINO_TEENSY41) "

    Should also include :: #if...
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