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    That 'Serial' means serial over USB I think. You...

    That 'Serial' means serial over USB I think. You still use the serial port. Perhaps you need to press the button on the Teensy to get it to show up in the ports for the 1st time per the...
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    ralphrmartin That is what's available now with...

    ralphrmartin
    That is what's available now with Teensy 4.0.

    FYI, 1.48 is Beta software, ie not ready for prime time. If your just starting with this you may want to go back to Arduino 1.8.9 and...
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    iMac 10.14.6, Arduino 1.8.10, TD 1.48 B1, on T4...

    iMac 10.14.6, Arduino 1.8.10, TD 1.48 B1, on T4
    After loading certain sketches the serial port goes away and won't come back until I compile something like blink and press the button. T4 crashes?
    ...
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    Frank, Have you gotten rid of the crackling? ...

    Frank,
    Have you gotten rid of the crackling?

    I had an issue where the T4 SCK pin13 was extremely sensitive just trying to play the 'WavFilePlayer'. The SCK would pick up some kind of noise and...
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    I'm trying to get the setup...

    I'm trying to get the setup here:https://forum.pjrc.com/threads/57421-Teensy4-Audio-Board?p=214104&viewfull=1#post214104

    to run the default audio board stuff like:
    SdCardTest, WavFilePlayer ect....
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    @DD4WH Here's what to do if you can't wait:...

    @DD4WH
    Here's what to do if you can't wait:
    https://forum.pjrc.com/threads/57421-Teensy4-Audio-Board?p=214104&viewfull=1#post214104
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    @mlinton, I have removed T3x's soldered...

    @mlinton,
    I have removed T3x's soldered similarly from a large board by grinding away the outside of the header with a grinding disk on a dremel tool just enough to be able to push the plastic back...
  8. @DerekR Thanks, that cleared things up. FYI...

    @DerekR

    Thanks, that cleared things up. FYI I had to move the #include "Arduino.h" above the #include "AudioStream.h" in AudioXcorr.h for it to compile. This may because I put the AudioXcorr.h...
  9. Almost: AudioLagComp.h AudioXcorr.cpp I...

    Almost:
    AudioLagComp.h AudioXcorr.cpp

    I tried changing the names around but looking at it the files are missing.
  10. @DerekR Think you might not have posted...

    @DerekR
    Think you might not have posted "AudioXcorr.h" and "AudioLagComp.h.cpp" ?
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    Here's my 7th attempt

    @PaulStoffregen
    After an hour or two (edit 2 or 3) of continuous effort I couldn't manage to make 'attempt 7' crash or refuse to open the terminal window !
    Gave up on the...
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    Here's a 6th try

    Slowing reducing the code to see what it takes to kill terminal window. Even with this in T4 just opening and closing the terminal window 5 times:


    void setup() {
    }

    void loop() {
    }
    ...
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    @Paul Had to mess around quit a while opening...

    @Paul

    Had to mess around quit a while opening and closing monitor window, recompiling, loading with terminal in various states until finally after pressing show timestamp and closed the window...
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    @Paul Trying rev 4. Using DejaVu.ino and...

    @Paul
    Trying rev 4. Using DejaVu.ino and repeatedly compiling, loading, changing ect. as before and haven't got any out of memory errors I do get:

    java.lang.InterruptedException: sleep...
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    I have no idea. Just thought you might have had...

    I have no idea. Just thought you might have had a brain fart:)
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    That screen shot shows Teensy 3.2 at bottom?

    That screen shot shows Teensy 3.2 at bottom?
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    Messing with my DejaVu.ino on Mac its seems worse...

    Messing with my DejaVu.ino on Mac its seems worse than try 2. Arduino will become unresponsive after only a few iterations of...
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    @Paul Tested your second try and really like it...

    @Paul
    Tested your second try and really like it as others have commented. You asked for issues so: Can still crash Arduino where memory is ~780MB CPU 350%.

    Here's a little more precisely how to...
  19. I found it and replied there:...

    I found it and replied there:
    https://forum.pjrc.com/threads/57167-Teensy-4-0-I2S-Support?p=212481&viewfull=1#post212481
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    see:...

    see: https://forum.pjrc.com/threads/57341-Bad-wiring-posted-somewhere-for-Teesny-4-0-to-Audio-Shield?p=213469&viewfull=1#post213469
  21. Bad wiring posted somewhere for Teesny 4.0 to Audio Shield

    I downloaded and printed this picture from this forum and found an error and would like to share but can't find where it came from.

    The error is the wire shown from Audio shield SCLK to Teensy4...
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    Thanks guys, that's a relief. I never realized...

    Thanks guys, that's a relief.

    I never realized that any pin would work, that would have made some of my 3.2 efforts much easier. I was doing as your link describes with buffers ect. with great...
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    Teensy 4.0 SPI Chip Select pins

    I don't understand how the CS pins work on the T4. On T3 there was one SPI bus but many CS pins to choose from for each peripheral.

    On T4 there are three SPI buses but only one CS pin for each.
    ...
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    Noticing others comments, I found its not how...

    Noticing others comments, I found its not how long you let the window or app sit running, it's how many times you let the monitor window overflow, close it, recompile, reload, overflow. In fact I...
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    :confused: Model Name: iMac Model...

    :confused:

    Model Name: iMac
    Model Identifier: iMac14,2
    Processor Name: Intel Core i5
    Processor Speed: 3.2 GHz
    Number of Processors: 1
    Total Number of Cores: 4
    L2 Cache (per...
  26. DD4WH Got your 2019_03_17 Convolution code to...

    DD4WH

    Got your 2019_03_17 Convolution code to compile on T4 by just eliminating this code:


    #ifndef __IMXRT1062__ //mdrT4_20190820 had to define out this to compile for Teensy 4
    for...
  27. I think the order is the first one it finds...

    I think the order is the first one it finds starting with:
    Your sketch folder, you can put library .h and .c here to make sure they are the ones used.
    Sketchbook/Library/
    if not found then
    Teensy...
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    There may be some confusion about mounting a...

    There may be some confusion about mounting a microSD card holder directly on the Teensy 4 board as in the 3.5 and 3.6. The board pad pitch is 1.0 mm. MicroSD cards and their connectors are 1.1 mm...
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    Sticky: Seems funny it can recover once or twice, maybe...

    Seems funny it can recover once or twice, maybe just luck on what got clobbered. Probably good to save work and better to restart when this happens?

    Forgot to thank you and all the other...
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    Sticky: DejaVu all over again

    I know this is a stupid operator issue.. but I seem to experience it a lot;)

    MacOS 10.14.6 Arduino 1.8.9, Teensy Loader 1.47, Teensy 4, Teensy Ports/...serial(Teensy 4.0")

    Causes Arduino to...
  31. 1. I don't believe numbering the pins on the...

    1. I don't believe numbering the pins on the schematic symbol with yet another meaningless number is useful. This might be different if Teensy had numbered the cheat cards like this but they don't....
  32. Kicad is even more awesome than the Teensy (3.2)...

    Kicad is even more awesome than the Teensy (3.2)

    Example:
    17205
  33. Replies
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    Question When updating from 1.47-Beta n to...

    Question
    When updating from 1.47-Beta n to 1.47-Beta n+1 should I apply over the exiting Arduino or a un-altered fresh copy?
  34. I think Arduino 1.8.8 helps that issue. 1.8.9...

    I think Arduino 1.8.8 helps that issue. 1.8.9 runs fine for me on 10.14.6
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    Yes, same as you except on MacOS Mojave 110.14.6....

    Yes, same as you except on MacOS Mojave 110.14.6. All my ILI9341_t3 programs compile and run correctly with beta6 on T3.2, 3.5, 3.6 and none of them compile for T4.

    thanks for the help
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    Sorry, I messed up, must be the Alzheimers. ...

    Sorry, I messed up, must be the Alzheimers. Could have sworn it compiled for 4.0, so of course all my ILI9341_t3 programs don't compile now. To bad can't edit my earlier post.
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    @mjs513 Here's a snippet that shows the...

    @mjs513


    Here's a snippet that shows the error:


    #define theLCD Serial1

    void setup() {
    // put your setup code here, to run once:
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    @ defragster Not sure what your after but...

    @ defragster



    Not sure what your after but no I don't think a local WIP(work in progress?) ILI9341_t3 is used. Below shows the libraries used for T3.5. The touchscreen works fine.

    Also, I...
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    I can confirm that RSL_VNA, and a bunch of...

    I can confirm that RSL_VNA, and a bunch of ILI9341_t3.h based programs run on T3.5 (touchpoint, graphicstest, demosauce ...) and compile on 4.0
    Teensy_Convolution_SDR didn't compile on T3.6 or t4...
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    @wwatson Same issue with TimeLib.h on Teensy...

    @wwatson


    Same issue with TimeLib.h on Teensy 3.2 and Teensy 4 with 1.47-beta5. Worked on 1.46

    thanks
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    Wow, I really don't understand that callout or...

    Wow, I really don't understand that callout or the array of strings method on the Arduino PROGMEM help page, but it compiles and seems to work. I'll investigate further, thanks!
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    What is a 'section type conflict' that shows up with 1.47-beta5 only on T4

    PROGMEM const int mphTable[] = {
    0,100,90,80,75,60,
    4,1,1,1,1,1,
    5,1,1,1,1,1,
    6,1,1,1,1,1,
    7,1,1,1,1,3,
    8,1,1,2,2,5,
    9,1,1,3,4,7,
    10,1,2,4,5,9,
    11,2,4,5,7,9,
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    Was your part from early kick-starter? Might be...

    Was your part from early kick-starter? Might be solder joints. You might try a hot air gun as in this thread:

    https://forum.pjrc.com/threads/40638-Teensy-3-6-program-loader-and-I-O-glitches
    ...
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    Received two Teensy 4s on the 10th, USPS.. great...

    Received two Teensy 4s on the 10th, USPS.. great service! Coincidentally arrived on same day as Pi 4!
    So I'm testing many programs that run on 3.2, 3.5 & 3.6 and finding many little issues with...
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    X1 looks pretty far away from U1. On J2...

    X1 looks pretty far away from U1.
    On J2 connector it would be nice to have separate ground pins for LOUT and ROUT (pins 6 & 10?)
  46. Frank B, I'm no RF guy, so hopefully you'll get...

    Frank B,
    I'm no RF guy, so hopefully you'll get more knowledgable responses.

    Can't explain R1, R18 difference. From data sheet PIN diodes D2... have about .9V across them so ignoring inductors,...
  47. Frank, I'm not the greatest with GitHub either:)...

    Frank,
    I'm not the greatest with GitHub either:) , but I think the procedure is to create a new branch to add somebodies pull request to. That way you don't mess up your current stuff and if you...
  48. Wow, that fixed it. Hard to believe with that...

    Wow, that fixed it. Hard to believe with that large an overrun anything worked !

    I was going to do a pull request but I'll update to your new latest first.

    thanks
  49. Frank DD4WH Having an issue with something...

    Frank DD4WH
    Having an issue with something clobbering a global variable. Isolated it a little. Seems to happen in setup when calling calc_cplx_FIR_coeffs(...)

    Using your latest GitHub:
    after...
  50. Frank DD4WH I should have checked my statement. ...

    Frank DD4WH
    I should have checked my statement. I keep making these bad assumptions on what I'm seeing when debugging. I'll post the code when its cleaned up a little more and I have checked for ...
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