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  1. It seems the verbose Error info is missing where...

    It seems the verbose Error info is missing where the problem with the schinken/SimpleTimer library would be indicated is missing?
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    JUST FYI : Seems "to be performance-ready" ... I...

    JUST FYI : Seems "to be performance-ready" ... I was playing the uTube and my wife came from next room telling me what it was ... and singing

    For the LED's pick 7 digital pins and when the sensor...
  3. And this text on the full PROP with motion: ...

    And this text on the full PROP with motion:

    DISCONTINUED
    You can grab the Adafruit Prop-Maker FeatherWing - Without or Without Headers instead!
    Notes there about best use on Adafruit M0 and M4...
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    A bad cable would explain that - otherwise a...

    A bad cable would explain that - otherwise a simple blink sketch after Verify and then Plug in button held and released should trigger system to upload.

    What version of IDE and TeensyDuino? Paul...
  5. Not sure - but I assume with T4 having dual side...

    Not sure - but I assume with T4 having dual side components - one side is already low temp pasted for initial build?

    You've seen this thread - Is-there-a-third-Teensy-4-0-breakout-board
    @KurtE...
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    Quick forum search on MQS - one was this ::...

    Quick forum search on MQS - one was this :: Teensy-4-MQS-pins-what-are-they-where-can-I-read-about-them-are-they-supported
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    Hard to say - during beta since Jan 2019 I stuck...

    Hard to say - during beta since Jan 2019 I stuck with making sure the default build working - few attempts at LTO or other could hit an issue. And I didn't see any attempt to push or test beyond that...
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    @ftrias > Created...

    @ftrias > Created github.com/ftrias/TeensyThreads/pull/21 Pull request for the change

    That will need updated and pulled in with a prior change to stop T4 double _isr :...
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    in IDE 1.8.10 install with TD 1.48 in : ...

    in IDE 1.8.10 install with TD 1.48 in : arduino_1.8.10\hardware\teensy\avr\libraries\USBHost_t36\USBHost_t36.h
    Removed this to a comment:: //#define USBHOST_PRINT_DEBUG

    Compiled again and it...
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    Okay,that is what i saw on my machine ...didn't...

    Okay,that is what i saw on my machine ...didn't hit the source... See now which it changed to

    Will need change in @ftrias TeensyThreads
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    Seems the DEBUG REQUIRED may have been around...

    Seems the DEBUG REQUIRED may have been around before? My debug is on now - have to wait to try it off.

    @KurtE or @mjs513 might have a note if you can say what IDE and TeensyDuino versions are in...
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    @Paul - I put the current Github/CORES on this...

    @Paul - I put the current Github/CORES on this system and building 'USB Host Ethernet Driver' sample that uses TeensyThreads it breaks with this.

    What there a rename of something?


    ...
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    I got a second unit not too long ago - may be a...

    I got a second unit not too long ago - may be a different batch from the first one, but I have not connected to Teensy yet - and it now MIA … though I did just find three T_3.6's …

    Found it - new...
  14. Mainly tested on Teensy 4 - did just run on okay...

    Mainly tested on Teensy 4 - did just run on okay a T_3.1 (about 10 times with 11,200 bytes) - because I was expecting it to have an issue with the USB stack being a work in progress - and there is a...
  15. This PJRC product page should show the answers: ...

    This PJRC product page should show the answers: pjrc.com/store/teensy3_audio.html

    Those noted pins include SPI - which may not be in use … And the same for Pin #15 tied to Pot on the Audio board.
  16. Does this work any better where it replaces what...

    Does this work any better where it replaces what was tried in the second code loop



    char megaBuffer[MAX_PIXELS_PER_STRIP * 8 * 3]; // 12408 currently
    int curItem = 0, n;
    unsigned long...
  17. What OS is the computer running? Windows has...

    What OS is the computer running?

    Windows has some odd hibernate/sleep modes that many devices don't some back from. Looks here USB Selective suspend setting

    It might be that - or just above...
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    Four out of FOUR is pretty amazing to have no...

    Four out of FOUR is pretty amazing to have no data lines! With note of 4 tested I skipped the boilerplate 'Make sure you have a GOOD USB Data cable' …
  19. Github update 9 months ago - maybe an Issue there...

    Github update 9 months ago - maybe an Issue there will get resolved by the author? Might just be a IDE/Toolchain update or minor untested T_LC case.
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    Posting the found answer is always cool :)

    Posting the found answer is always cool :)
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    Indeed micros() isn't a clean/easy function on...

    Indeed micros() isn't a clean/easy function on T_3.x's.
    Better to use the CPU cycle counter - T_LC doesn't have one but T_3.x's do though not enabled by default, it is on T4 though:

    This test...
  22. opps - quite right ...

    opps - quite right ...
  23. Looking at :...

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

    this "Displays_Run.begin(Sub_Display_Run, 2500);" is requested to run every 2.5ms … that is 400 times per second. Probably at least 10-20...
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    Based on the OP … Seems a borderline issue for a...

    Based on the OP … Seems a borderline issue for a clean solution - not sure interrupt is the answer if data is read at some 'TIME' - and that data can indicate a time critical issue - it should be...
  25. If not using SPI for RAM/DISPLAY/SD then pin #13...

    If not using SPI for RAM/DISPLAY/SD then pin #13 is free, And #15 is only used when Audio pot board is in use.

    With those two and #'s : 14, 16, 17, 22 that is 6 analog pins?

    Other than using...
  26. Not sure what the 'perfectly with a running light...

    Not sure what the 'perfectly with a running light sketch' looks like? How it feed the LEDS through the 595 shift registers?

    Somewhere it has the data arranged to control/feed the lights in that...
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    On the displays like PJRC ili9341 commonly used -...

    On the displays like PJRC ili9341 commonly used - the touch is through an SPI controller XPT2046 on the display. Example would be :...
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    As noted on the card back and elsewhere : ...

    As noted on the card back and elsewhere :



    Even if that did not somehow apply to AREF - no input over 3.3V could be applied.
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    2.2K resistors are about right - if they work on...

    2.2K resistors are about right - if they work on T_3.6 with the same 3.3V

    Wire.begin() is wire and Wire1.begin() is for Wire1 and will setup to use the other pins

    For SSD1306 display sketch to...
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    Unless you update versions of TeensyDuino it...

    Unless you update versions of TeensyDuino it can't change. And that date was likely chosen on a purpose as a known setpoint designed to not be changed.

    @Paul: I expect that "default Jan 1, 2019" ...
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    :cool: @ Andy Belov - Indeed - Hopefully the...

    :cool: @ Andy Belov - Indeed - Hopefully the cards and other device details make sense before choosing the wrong Teensy or doing the wrong thing to it.

    Indeed in all cases the Teensy ships with...
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    Can you try it reconnected to WIRE1 pins 16/17...

    Can you try it reconnected to WIRE1 pins 16/17 instead of 19/18 ?

    Only recent i2c done here was ssd1306 but it ran well up to 1MHz from TD 1.48 and 3 MHz with a clock adjustment - on both WIRE and...
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    The Teensy 4 does have onboard Host connection...

    The Teensy 4 does have onboard Host connection hardware to the processor. Putting it onto that PJRC breakout just makes it electrically complete with a power switch IC and safe to present to a...
  34. Getting those castelations cut reliably is going...

    Getting those castelations cut reliably is going to be tough. Even the board @FRDM4236 just got back from his maker left two of the pins only partly routed to the outside of two holes.
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    This page of the cards gives a good view ::...

    This page of the cards gives a good view :: pjrc.com/teensy/pinout.html

    For USB_Host:: The T_3.6 brings the pins out more ready to use with internal pin holes, On the T4 the data lines are as...
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    @eegee - What Teensy is in use? The p#2 Teensy...

    @eegee - What Teensy is in use?

    The p#2 Teensy is a #4 with a second USB host port - which is located where some prior Teensy's had duplicate USB Device port pads.
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    Cool display works faster - test so far shows it...

    Cool display works faster - test so far shows it hit 80 and no jumps until 120 as the match works out when running a benchmark.

    To post pics jpeg or png typically and must be under 1MB AFAIK or...
  38. 150 MHz Ram2 ( .25 of F_CPU ) - thanks Paul. ...

    150 MHz Ram2 ( .25 of F_CPU ) - thanks Paul.

    Updated my test code - I had addresses printed missing an array dimension in above post - so ignore those.

    I added code for DMA cycle per write test...
  39. Add to p#66 code using: #define DMA_SIZE...

    Add to p#66 code using:


    #define DMA_SIZE 9000
    DMAMEM uint32_t pDMA[3][DMA_SIZE];


    There are some regular MCU cycle waits between 2 and 22 cycles when using that DMAMEM - RAM1 looks to be 2...
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    Looking at :...

    Looking at : sparkfun.com/tutorials/qwiic-vr-imu-bno080-hookup-guide

    It shows this code ordering:

    Wire.begin(); //Begin the I2C bus
    Wire.setClock(400000); //Increase I2C data rate to 400kHz
    ...
  41. If the 'IntervalTimer ' from TeensyDuino is 1.48...

    If the 'IntervalTimer ' from TeensyDuino is 1.48 that is the latest.

    Which two work?

    Does taking each of the working ones out in turn one at a time make the third one work?

    Does it change...
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    Indeed something is different with the display or...

    Indeed something is different with the display or connections - was cool testing KurtE's update ran on the ili9341 as connected, and @KurtE and @mjs513 both tested with ili9488's IIRC.

    But those...
  43. Question: RAM1 is CPU speed - what speed is RAM2...

    Question: RAM1 is CPU speed - what speed is RAM2 that it needs to be cached? Some edit to repeat the p#66 ITCM code on DMAMEM blocks could tell me. After posting that code I added another group...
  44. Indeed for the 1170 there will be one - for the...

    Indeed for the 1170 there will be one - for the larger 1062 PCB there will still be none as it is not included on the chip.
  45. That would be one way that might avoid long delay...

    That would be one way that might avoid long delay - but since the \n is at the end of the data it is backwards to wait for that to read the data right?

    Alternatively reading each byte and parsing...
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    Yeah - speed may have been 36M max. The...

    Yeah - speed may have been 36M max.

    The ili9341 I tried went to 80 MHz fine
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    That looks like that currently leaves a 12KB...

    That looks like that currently leaves a 12KB region orphaned in ITCM RAM. I just posted code here that locates that free space and gets a pointer to it:...
  48. Looks like read and write works there Obviously...

    Looks like read and write works there Obviously on startup the code is written there to fill ITCM with FLASH CODE - this finds that end - skips a word - then writes to next 32K boundary in sketch....
  49. Teensy 3.6 has 256 KB of RAM - the primary RAM1...

    Teensy 3.6 has 256 KB of RAM - the primary RAM1 area of Teensy 4.0 is 512 KB. That is shared with code note marked as PROGMEM. Unless sketch code exceeds 256KB - the T4 will have more memory...
  50. Quick look it seems the receive code reads...

    Quick look it seems the receive code reads through any data values throwing them away until '\n' is found with :: if (Serial1.read() == '\n')

    Once '\n' is found it then expects to read the four...
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