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  1. if you do this: void setup() {...

    if you do this:



    void setup() {
    _VectorsRam[48+16] = &int48;
    NVIC_ENABLE_IRQ(48);
    }
    void int48() {
    Serial.println("int");
  2. So.. to disable the button: SNVS_LPCR |=...

    So.. to disable the button:

    SNVS_LPCR |= (1<<17) | (1<<16);
  3. ok, a bit sticky :) But there is a way to...

    ok, a bit sticky :)

    But there is a way to reset them:

    SNVS_HPCOMR |= (1<<4);

    Not sure what this helps.. the only reason after the initial power on is a "soft" power-on" with button press....
  4. The voltage regulator switches off, too - the 3V3...

    The voltage regulator switches off, too - the 3V3 pin goes low.
    You might want to look at the table 20.5.3 Power mode transitions (Reference manual)

    Bit 17 of SNVS_LPSR can tell you if there was...
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    Part of the problem is the parity function. If...

    Part of the problem is the parity function.

    If you move the lines


    ...
    ltcTimer.begin(genLtc, ltcTimer_freq);
    ltcTimer.priority(0);
    }
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    That's why it uses the sync-signal.. (pin 0) If...

    That's why it uses the sync-signal.. (pin 0) If you don't use it, it will drift away. That's natural - it's always the case when you compare two independent osciallators. There is no way to stop this...
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    It seems he uses a pretty picky algorithm (our...

    It seems he uses a pretty picky algorithm (our code can do it better :-) ) The signal is actually intended to pass through a wide variety of devices, to be filtered and tortured - and yet the...
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    Thank you for testing :) I noticed a few...

    Thank you for testing :)

    I noticed a few glitches on the output with slow f_fcpu. Looks like there is a higher priority interrupt somewhere or the Interrupts get disabled. It was much better on...
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    Damn, no. It was a few days back when i saw it.....

    Damn, no.
    It was a few days back when i saw it.. it must have a different part number.

    Ok.. closing here.. sry.
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    PT8215, cheap I2S A/D

    Only by chance (a typo) I found the counterpart to our "darling" PT8211: The PT8215.

    I myself have, I think, little use for it. But it would certainly be interesting to support this part in the...
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    Was USB-Audio advertised for T4? Or mentioned...

    Was USB-Audio advertised for T4? Or mentioned anywhere?
    Personally, I find other USB-features more interesting - like MTP - and would prefer that. But hey, that's a hobby and I can wait.
    I don't...
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    Best is to use the default, "serial". If you...

    Best is to use the default, "serial".

    If you add


    delay(1500);
    Serial.println("Hello Tom");
    as last lines to setup() - what happens?
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    Well... it works with the Teensy 3.2, default...

    Well... it works with the Teensy 3.2, default 72MHz.
    There seems to be a little problem with the first bit:


    16:19:55.00
    16:19:56.00
    16:19:56.02
    16:19:56.02
    16:19:56.04
    16:19:56.04
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    So both cores have each their own DMA and don't...

    So both cores have each their own DMA and don't share it.
    The Block diagram shows they have their own FPU, too. Are they the same, or is there a technical difference I.e. can both calculate double...
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    Ok, i'll test it this evening :)

    Ok, i'll test it this evening :)
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    For teensy 4.{something} with 1170: The ESP...

    For teensy 4.{something} with 1170:

    The ESP guys are using a function named "xTaskCreatePinnedToCore()" to assign a task to a specific core. I like this idea.
    It will be interesting to know how...
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    ..not important.. I just wanted to get rid of my...

    ..not important.. I just wanted to get rid of my anger :)
    That helped.

    Found an other version which prints tons of warnings, but it at least outputs something and this is enough.
    And, not the...
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    genLTC() and startLTC()

    genLTC() and startLTC()
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    ...tried the desired project.. result ...

    ...tried the desired project.. result


    rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
    configsip: 0, SPIWP:0xee
    clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00...
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    @Silverlock: Thank you :) @Manitou: Just tried...

    @Silverlock: Thank you :)
    @Manitou: Just tried it - yes, the ESP-folks moved the crc16.h or forgot it.
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    At the very least, all ports should work... I've...

    At the very least, all ports should work...
    I've never tried Serial6 - but this is the first time I'm reading about it not working. So it could well be a BUG... or not :)
    Can you do more tests?
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    p.s.: Is there any way to keep written code for...

    p.s.: Is there any way to keep written code for different boards in separate directories?
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    You can use the reset-pin.

    You can use the reset-pin.
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    Fun with ESP32 board.

    Fun with ESP.

    I had decided - because I wanted to try some special software that exists for the ESP32 - to buy a development board. In the past I often heard the name "NodeMCU" and thought, yes,...
  25. Hm. Or, try to connect the needed pull-up...

    Hm. Or, try to connect the needed pull-up resistors with vddio, not 3.3v.
    But I'm not sure if that works.
  26. As last chance, look for shorts, excessive...

    As last chance, look for shorts, excessive solder..
    ..and try to cut all pins and remove the Audio Shield.
  27. Have you tried the 15 seconds reset?...

    Have you tried the 15 seconds reset?
    https://forum.pjrc.com/threads/37531-T_3-6-acting-oddly-Program-Button-doing-a-reset-no-bootloader-reprogram?p=116941&viewfull=1#post116941

    If that does not...
  28. Try this: ...

    Try this:

    https://www.pjrc.com/teensy/troubleshoot.html
  29. You may want to download the datasheet and have a...

    You may want to download the datasheet and have a look :)
  30. Hm, does the 3v3 pin has contact? It's difficult...

    Hm, does the 3v3 pin has contact? It's difficult to see.
  31. At a first glance, this looks OK. Have you...

    At a first glance, this looks OK.

    Have you tried to upload the blink-sketch? Does it work?
  32. Please post a photo.

    Please post a photo.
  33. I'd check the device if it is 3.3V tolerant. If...

    I'd check the device if it is 3.3V tolerant.
    If yes, just try it without circuit.
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    Good luck :) Keep in mind not to add too much...

    Good luck :)

    Keep in mind not to add too much time-consuming code to the interrupts.

    Frank.
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    Yes, because of the usage in the interrupt - but...

    Yes, because of the usage in the interrupt - but not to be faster (it's slower)- "volatile" is needed to prevent the compiler from optimizing the variable away - the compiler might have wrong...
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    ..and this, from here...

    ..and this, from here:
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    ...to add at least something useful to this...

    ...to add at least something useful to this thread, a quote from here:
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    Deleted because it wasn't that useful... :) - I...

    Deleted because it wasn't that useful... :) - I should have read your 1st post before answering.
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    Maybe I can test it tomorrow.

    Maybe I can test it tomorrow.
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    Faster or not.. don't know. The Teensy has...

    Faster or not.. don't know. The Teensy has assembler-instructions for division und is a 32 bit system, so i just took "/10".

    Since nothing happened and I like to have usable code, I updated the...
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    That's not enough information for guessing.. and...

    That's not enough information for guessing.. and it woult be very helpful to know what do you want do achive.
    Tell us about your project!

    Which dac - which interface - does it need a clock...
  42. Some time ago I just connected them via serial...

    Some time ago I just connected them via serial and flashed the AT-Firmware (a modem emulation) to the ESP.
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    I'd say, if the lib ist not needed - for 24Bit...

    I'd say, if the lib ist not needed - for 24Bit It's not usable at the moment - it makes more sense to omit it, take the i2s input modify it for 24 Bit, and write to an array. Done.
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    So your strategy involves to support more...

    So your strategy involves to support more industrial use by using free open source expert(s) knowlage for free?
    (and keep the prices high for single-board customers, and so the experts whose...
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    Very true. If you take the ease of using way...

    Very true.
    If you take the ease of using way more MHz for the NXP into account, without need to have the advanced skills to use two processors, the answer is a bit simpler.
    Edit: There are many...
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    That's surprising :) In the past, the reality was...

    That's surprising :) In the past, the reality was a bit different.
  47. ... and it supports any other frequency. 48kHz...

    ... and it supports any other frequency. 48kHz should work, with minimal jitter, but I have not tested it.
    48kHz is interesting, so if there are any problems I'm willing to help to solve that.
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    Ah.. got it. This means, for Teensy, the...

    Ah.. got it. This means, for Teensy, the sourcecode has to be rebuilt if you change a breakpoint or a variable-watch.
    Some code I wrote takes a minute to compile.. of course not all :) But it gets...
  49. Ah, I see.. my fault. The Quad mode uses two...

    Ah, I see..
    my fault. The Quad mode uses two RX-Pins.
  50. How did you connect these boards? On the...

    How did you connect these boards?
    On the Adafruit page I don't see any indication that they support this mode.
    Havn't looked at the mic-datasheet, though.
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