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  1. Replies
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    For the audioshield, I get : Scanning... No...

    For the audioshield, I get :


    Scanning...
    No I2C devices found


    Edit: Oops, sorry, this is because the SGTL5000 needs an mclk!

    However, I get this response with my patched codec:
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    Hm... tried SSD1306... getting some errors: ...

    Hm... tried SSD1306... getting some errors:


    n file included from C:\Arduino\hardware\teensy\avr\libraries\Adafruit_GFX\Adafruit_GFX.cpp:35:0:
    ...
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    Has someone tested I2C ? The Audioshield problem...

    Has someone tested I2C ? The Audioshield problem looks like it is - at least for a part - a I2C problem. I added a println() around every write in the codec cpp file and get some zeroes - not...
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    ähm.. no T4 ? Have I missed something? Guess I...

    ähm.. no T4 ? Have I missed something?
    Guess I have to take a look at the Arduino-files...

    16469

    Power-on/off works.
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    Received the T4 - looks great! Oh man.. so...

    Received the T4 - looks great!

    Oh man.. so many posts - too much to read now :)
    @Defragster: PWM is not implemented - I don't think PWM is needed, there is the better MQS?!? Edit: PWM for Audio
    ...
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    I think I'll get my board today. Took some free...

    I think I'll get my board today. Took some free days. We will drive home now, 300km.
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    We will fix the Audio issue ... Can't be that...

    We will fix the Audio issue ... Can't be that much.
  8. It just says Teensy Threads is not compatible...

    It just says Teensy Threads is not compatible with Teensy LC.
    On the github page, there is no indication that it runs on a LC, too. The LC uses an ARM Cortex M0+, Teensy 3.x ARM Cortex, M4 -...
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    Are you sure the battery is 3V? Do you have a...

    Are you sure the battery is 3V? Do you have a multimeter?
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    https://forum.pjrc.com/threads/35021-Audio-board-m...

    https://forum.pjrc.com/threads/35021-Audio-board-mechanical-drawing?p=107224&viewfull=1#post107224
  11. That's more likely a raspberry problem.

    That's more likely a raspberry problem.
  12. Thread: Audio Sampling

    by Frank B
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    Well, if you're not willing to write code for it,...

    Well, if you're not willing to write code for it, yes in this case it's not working - for you.
  13. Glad that it works :)

    Glad that it works :)
  14. Thread: Audio Sampling

    by Frank B
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    Correct, SPI-RAM is more than fast enough. Some...

    Correct, SPI-RAM is more than fast enough. Some years ago I used a SPI-Flash it to play > 15(?) Samples simultanously. Don't remember if I even used the max SPI speed..
  15. The schematic is proven and OK, many people used...

    The schematic is proven and OK, many people used it. Can you post your schematic? Maybe something is missing.. :) And please post pictures of the layout and your soldered PCB!
  16. https://github.com/FrankBoesing/snippets/blob/mast...

    https://github.com/FrankBoesing/snippets/blob/master/optimized.h#L70

    Please note it disables to interrupts, too for a reliable timing. you can try to use a high-priority timer instead.
  17. Hm, on the other hand, If only 8x TX is needed ...

    Hm, on the other hand, If only 8x TX is needed you can write code to do it in sync- means toggle 8 TX pins instead of only one in your Softwareserial. In the T4 Beta thread there is an example for a...
  18. I doubt that this works for that number of...

    I doubt that this works for that number of parallel sending TXs. Then, the core disables interrupts, too, at various places.
    Paul is right, the best, *reliable*, way is to use more Teensys.
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    ATAN2: Don't know if this is faster or better -...

    ATAN2: Don't know if this is faster or better - and it is from 2012 - but might be worth to take a look :) : https://www.mikrocontroller.net/topic/atan2-funktion-mit-lookup-table-fuer-arm
  20. Thread: I2C eprom help

    by Frank B
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    Just write the integer as four bytes?...

    Just write the integer as four bytes?
    pseudocode:


    write(myInteger & 0xff);
    write((myInteger >> 8) & 0xff);
    write((myInteger >> 16) & 0xff);
    write((myInteger >> 24) & 0xff);
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    You shouldn't worry about a ticket.

    You shouldn't worry about a ticket.
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    With SGTL5000?

    With SGTL5000?
  23. You really should not use PORTD - It only exists...

    You really should not use PORTD - It only exists to make some old sketches written for AVR work. It's a emulation only. If you really want to do it this way, use the corresponding Teensy register!...
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    Yes I think above a certain level the speed of...

    Yes I think above a certain level the speed of SPI is the only limiting factor - not F_CPU, because the CPU is waiting all the time.
    Default F_BUS for 256MHz is 64MHz z
    - can be set to 128MHz....
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    Indeed. Does it even work?

    Indeed. Does it even work?
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    @wmxz, the sd socket on the audioshield for...

    @wmxz, the sd socket on the audioshield for example.
    the code uses the spi-lib only - no own spi code
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    ... found a more Interesting solution for my...

    ... found a more Interesting solution for my displayproblem: A SPI-RAM with inbuilt PAL/NTSC encoder :-) Ordered chips+ 11 EUR Display and will make that board for all Teensys 3.x first :)
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    I agree with Tim - it's better to ship the new...

    I agree with Tim - it's better to ship the new boards to US addresses.

    I've decided to make a display board with some chips on it in the hope I can use a fast 8 or 16 bit interface with a few...
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    Hm, I think that was the display only.

    Hm, I think that was the display only.
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    Platformio: How to set F_CPU?

    see title :)
    I installed Platformio - looks with VS - nice but i like std Atom more.
    How can I set the F_CPU ? I'd like to have 96MHz for Teensy 3.2
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    Ok, since I am known for my "sick" ideas... the...

    Ok, since I am known for my "sick" ideas... the smaller IMXRT chips are relatively cheap - maybe @Paul can make a simple display "breakout" with an IMXRT chip, with fast USB and display interface....
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    some time ago I linked a Chinese 9488 display...

    some time ago I linked a Chinese 9488 display which seems to have quadspi. I think it makes more sense to play with this one - if we can make flexio qspi fast enough. All the higher resolution...
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    I've sent some working code to Tim - maybe he can...

    I've sent some working code to Tim - maybe he can forward it to you (I'm not at home)
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    The ILI9488 is more ot less the same as the...

    The ILI9488 is more ot less the same as the ILI9341. There are some differences in the details of the registers (the maximum refresh rate for example). The version Paul, Tim and I have does not even...
  35. You need to edit the linkerscript.

    You need to edit the linkerscript.
  36. yes, works.

    yes, works.
  37. You'd have to change many more things, too.. the...

    You'd have to change many more things, too.. the core thinks the teensy is fresh from reset or power-on, so initialization of many things will go wrong. The program-button will start the original...
  38. ? So where are the interrupt vectors, then? Not...

    ? So where are the interrupt vectors, then?
    Not sure if I understood your question correctly.. you don't use the Teensy-loader app?
    Do you use the MKL Boooader chip? Is this a 3rd-party product?
  39. I think what you're seeing is not the "report"....

    I think what you're seeing is not the "report". That's just the std selection after installing Teensyduino. Just select "Teensy++ 2.0" from the menu, and upload the Blink-Sketch from...
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    If you ever need it, there is a very simple to...

    If you ever need it, there is a very simple to use function here: https://github.com/PaulStoffregen/cores/blob/master/teensy3/util/crc16.h#L39
  41. Thread: Midi 2.0

    by Frank B
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    Let's wait.

    Let's wait.
  42. Thread: Midi 2.0

    by Frank B
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    Soon you will see spam-links in their posts.

    Soon you will see spam-links in their posts.
  43. Thread: Midi 2.0

    by Frank B
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    LOL this too sweet to delete.. so much effort .....

    LOL this too sweet to delete.. so much effort .. what to do? just block "them" (Melanie @ Dianne with the same IP)?
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    You could use a checksum (e.g. a simple crc)...

    You could use a checksum (e.g. a simple crc) instead of a Version-# to make it more bullet-proof.
  45. More or less - *.wav has some overhead - Paul...

    More or less - *.wav has some overhead - Paul wrote the most exact method.
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    https://forum.pjrc.com/threads/42401-Instructions-...

    https://forum.pjrc.com/threads/42401-Instructions-or-tutorials-for-using-wav2sketch?p=202250&viewfull=1#post202250

    For polyphony use a SPI Flash chip. The 3rd.
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    I'd ask https://forum.pjrc.com/members/36542-KurtE

    I'd ask https://forum.pjrc.com/members/36542-KurtE
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    Can you please post good photos?

    Can you please post good photos?
  49. Look for "Search and replace" in your editor :)

    Look for "Search and replace" in your editor :)
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    Aline26, which pin is between 3.3v and vin?

    Aline26, which pin is between 3.3v and vin?
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