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Type: Posts; User: syso

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    SPI DAC for Audio Library

    Is there someone who has used an SPI DAC instead I2S for the Audio Library and has made a library for it?
    I am working on a custom-firmware for "Ornaments and Crime" - a Eurorack Module and it uses...
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    ADAT Multichannel In / Out?

    Is anyone already working on ADAT Multichannel In and Out? I wondered if it would be a quick way to give
    me 2x8 In, 2x8 Out (2x TX, 2x RX) via my ADAT-Interface.
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    Teensy 3 USB MIDI single byte transfers?

    Hello,

    I am working on a Nordic nRF24L01+ 2.4 GHz Radio (non-wifi or bluetooth) wireless MIDI bridge.
    So far everything works great, but I always send 3 byte packages.

    I was wondering if...
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    In this case with BPM = 120 and PPQM = 24: 20 and...

    In this case with BPM = 120 and PPQM = 24: 20 and it doesn't work.
    In worst case BPM can be 240 and PPQM = 384.

    Edit: I figured out the interval is in microseconds. One moment.
    Will try with...
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    IntervalTimer for very short intervals?

    For a MIDI sequencer application, I wanted to use the Interval Timer to generate the "Clock".

    This is the code:
    https://gist.github.com/DatanoiseTV/10683910d877e187037515ff2e98cab6

    Now with...
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    Just tested my code with the actual counter....

    Just tested my code with the actual counter. tick_count doesn't get incremented.
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    You're right. Declared a instance and seems all...

    You're right. Declared a instance and seems all to work fine, as far as I can see. Thanks!
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    I have the same problem still in some code....

    I have the same problem still in some code.
    Getting error:
    teemi_clock.cpp:51: undefined reference to `tc'

    teemi_clock.cpp:


    teemi_clock.h:
  9. Sorry for the late update, been busy with some...

    Sorry for the late update, been busy with some other work.
    Unfortunately I never got the board to work. Can anyone confirm that the code from Git is functional?

    If I know that the code is right,...
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    @Paul: Are you planing to release the Eagle Files...

    @Paul: Are you planing to release the Eagle Files as a reference for people having problems making their own DIY board?
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    Hey SoftEgg, I like it! Go for it and let me...

    Hey SoftEgg,

    I like it! Go for it and let me know as soon as there is a first alpha version available!
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    @PaulStoffregen: So far I didn't see any problems...

    @PaulStoffregen: So far I didn't see any problems with my board, but some indirect issue on OSX with the IMU GUI, which is used to calibrate.
    Even after successful calibration, the File->Send...
  13. Vult - a DSP Transcompiler (suitable for Teensy etc.)

    Hi,

    I just stumbled upon Vult - http://modlfo.github.io/vult :
    Vult is a simple and powerful language to program high-performance algorithms that may run in small microprocessors or...
  14. Found the mistake - I2C SCL and SDA swapped in...

    Found the mistake - I2C SCL and SDA swapped in eagle. Also, PDN pin was hardcoded in MickMads Library to Pin 0, and on my board its Pin 1.

    Still, there is no valid output on the DAC.
  15. I agree paul. I have been trying to run I2S and...

    I agree paul. I have been trying to run I2S and then scan for devices, but still without any success.

    Measurements show that SCL + SDA on the Codec side have ~1MOhm Resistance to GND, which seems...
  16. Hello, I just received my boards for my design...

    Hello,

    I just received my boards for my design and soldered the QFN28 AK4558 - pretty sure there are no bridges and the connections are right.
    I adjusted:


    and

    #ifndef PIN_PDN
    #define...
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    Thanks for your Answer, Paul. Which is the best...

    Thanks for your Answer, Paul. Which is the best output example to start with? I see all examples are using DMA and ISR routines - can I safely remove those? Or do I need to use DMASpi in that case?...
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    Audio Library - Using SPI / IO in Audio Code update()

    Hello,

    I am trying to write a output driver for a SPI dac, which runs fine standalone (without AudioLib) upto 180KHz sample rate.


    I tried something similar to...

    pinMode(0, OUTPUT);
  19. @Frank: Sure! I'll first get 1-2 boards for...

    @Frank: Sure! I'll first get 1-2 boards for myself, do some measurements and then go ahead with tindie eventually.
    I'll still need to adapt the AK4558 control object to support setting the I2C...
  20. On DigiKey, but we can order some more and ship...

    On DigiKey, but we can order some more and ship it to you :)

    The Eagle files are here https://github.com/DatanoiseTV/Teensy_AK4558 (shameless, uncleaned version).
    Feel free to send me pull...
  21. @Paul: CAD0 on the 2nd chip is connected to VDD...

    @Paul: CAD0 on the 2nd chip is connected to VDD :)
    I might offer them on tindie or so, if the interest is there.
  22. Hey guys, I have made a version of this board in...

    Hey guys, I have made a version of this board in Eagle, with some changes (4 outputs and inputs). It was inspired by the
    Teensy Audio Board.

    I would like to get some feedback from you. The ground...
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