Forum Rule: Always post complete source code & details to reproduce any issue!

Search:

Type: Posts; User: dirkenstein

Search: Search took 0.00 seconds.

  1. Replies
    834
    Views
    34,784

    OK- I think I know what this is. You either...

    OK- I think I know what this is.

    You either need to rename my FS-Teensy files to something the FS-Test.h and update both littlefs and sdfs to use the new names or just temporarily delete/remove...
  2. Replies
    834
    Views
    34,784

    You need the SPIMemory version in my GitHub...

    You need the SPIMemory version in my GitHub repository (now updated to actually work).

    https://github.com/dirkenstein/SPIMemory.git

    Dirk
  3. Replies
    834
    Views
    34,784

    I need to push an SPIMemory update before this...

    I need to push an SPIMemory update before this will work.
    Are you trying to compile this on a teensy 3? I think that may not work as there is already an FS.h header in the core library and all my...
  4. Replies
    834
    Views
    34,784

    Just wanted to confirm the stock SPIMemory should...

    Just wanted to confirm the stock SPIMemory should work for you.

    Are you trying to compile this on a teensy 3? I think that may not work as there is already an FS.h header in the core library.
  5. Replies
    834
    Views
    34,784

    LittleFS examples updated to support Teensy. now...

    LittleFS examples updated to support Teensy. now in the repo.
    Oh, and BTW the BD directory in littlefs needs to be removed as it doesn't compile under teensy.
  6. Replies
    834
    Views
    34,784

    Sorry, the examples are not up to date. They need...

    Sorry, the examples are not up to date. They need some namespace /include file logic adding.
    I will copy fixed versions in tonight, as well as a complex example program that uses both SDFS and...
  7. Replies
    834
    Views
    34,784

    https://github.com/dirkenstein/FS-Teensy.git...

    https://github.com/dirkenstein/FS-Teensy.git
    https://github.com/dirkenstein/SDFS-Teensy.git
    https://github.com/dirkenstein/LittleFS-Teensy.git
    https://github.com/dirkenstein/littlefs.git

    It...
  8. Pity, I was hoping there was a 'magic' way to...

    Pity, I was hoping there was a 'magic' way to make it work.
    I really liked the idea of convolution reverb in a tiny box.
    As a cab sim it sounds really good with some quality IR wav files....
  9. I tried it as well in both the memory test...

    I tried it as well in both the memory test program and my partitioned convolution code.
    It's faster, but not fast enough, unfortunately.
    Are we sure it's using multiple SPI 'lanes' for each chip?
  10. That's a real shame. I was hoping somebody would...

    That's a real shame. I was hoping somebody would find the PSRAM is only running on 1 SPI bus or something similar and we could double/quadruple the speed with Dual/Quad SPI.

    Or we could modify...
  11. Partitoned Convolution and EXTMEM perfromance

    I am trying to modify bmillier's partitioned convolution filter to use EXTMEM arrays on Teensy 4.1 for storing its large internal buffers but I am running into severe performance problems with it.
    ...
  12. yes, but it will need modification to handle the...

    yes, but it will need modification to handle the fact that the floating point library uses dedicated AudioStream_F32 classes etc.

    Not a big job but I will look into it.
  13. Floating Point Version ...

    Floating Point Version

    https://github.com/dirkenstein/FreeverbFP
  14. Even with that fix, i'm getting some weird...

    Even with that fix, i'm getting some weird 'crackly' artefacts with real-world input noise.
    I don't know where the crackles are coming from, but they are not audible in the clean signal but very...
  15. Thanks, the recovery process un--bricked it. I...

    Thanks, the recovery process un--bricked it. I wasn't holding the program button down long enough.
  16. Bricked Teensy 4.0- not enough stack space?

    I've just bricked a teensy 4.0 which won't show up in USB anymore. It goes into program mode OK when if you press the program button (red light comes on) but teensy loader never sees it (1.53 Mac...
  17. 32% with a 8192-tap filter. The memory usage...

    32% with a 8192-tap filter.

    The memory usage is hard to estimate, at least 300k. The issue is that allocating from RAM0 requires me to have a 384K static block of memory preallocated as you can't...
  18. DD4WH Convolution Filter Audio Object- truncating impulse responses

    Hi,

    I managed to convert DD4WH's partitioned convolution filter code into an AudioObject- It seems to use more CPU that way but it does work.

    It uses a _lot_ of memory with large parameter...
  19. Replies
    20
    Views
    2,015

    Yea, i had a look at the delay object in the...

    Yea, i had a look at the delay object in the audio library and the delay was configurable for each tap, but not modulatable. We're also short of a pitch shifter/playback speed object. And I'm no whiz...
  20. Replies
    20
    Views
    2,015

    Can i modulate the delay time?

    Hi, was hoping to implement a crude emulation of the old oil-can delay effect using a digital delay line with two taps and a configurable bandpass filter feedback loop.

    I was wondering if I can...
  21. Tried extra capacitance- it's not a spike value-...

    Tried extra capacitance- it's not a spike value- it's the overall draw being over 250mA when most of the display is lit (i.e more than 150mA for the display). I just put the display on a separate...
  22. Teensy 4.0 power button and brown-out detection?

    Hi,

    The onboard 3.3v regulator for the teensy 4.0 seems to be quite sensitive to spike overload current, so much so that i needed a standalone regulator for a project using a particularly...
  23. Replies
    320
    Views
    20,540

    OK totally confused- this is related to compiler...

    OK totally confused- this is related to compiler optimisation- it stops working when set to 'debug'.
  24. Replies
    320
    Views
    20,540

    I definitely pulled the latest versions from...

    I definitely pulled the latest versions from GitHub - but I'm only getting results when USBHOST_PRINT_DEBUG is set in USBHost_t36.h .

    benchtx is reporting about 13Mbit on TCP.
  25. Replies
    320
    Views
    20,540

    Teensy4 600MHz 1.48 , IDE 1.8.10, compile mode is...

    Teensy4 600MHz 1.48 , IDE 1.8.10, compile mode is debug.

    How do I tell if the version I have has the debug information issue? I assume the version that fixed this was pushed to GitHub?
  26. Replies
    320
    Views
    20,540

    My mistake- the vendor ID is 0x0B95 not 0x0895 in...

    My mistake- the vendor ID is 0x0B95 not 0x0895 in the source code I have. I read 0x0895 for 0x0B95. I think i need better eyes...

    However, i definitely can't get it to start up unless debug is...
  27. Replies
    320
    Views
    20,540

    VID 0x0b95 PID 0x772b Claims to be an AX88772B...

    VID 0x0b95 PID 0x772b

    Claims to be an AX88772B

    The version of TeensyAsixEthernet i pulled from GitHub had VID set to 0x0895 in claim()
  28. Replies
    320
    Views
    20,540

    Finally got it to work on my AmazonBasics USB...

    Finally got it to work on my AmazonBasics USB adapter- has the vendor ID 0x0b95 rather than 0x0895, though. Gets a DHCP address and is pingable.

    Also, it only seems to work when...
  29. Found the origin of the artefacts- I was feeding...

    Found the origin of the artefacts- I was feeding FreeverbStereo two channels instead of one- that overwrote one of the internal comb filter buffers silently and introduced a periodic noise. However,...
  30. AudioEffectFreeverbStereo - self-resonates with (internal) noise impulse?

    With damping set to 0, I've had some very odd periodic noise impulse artefacts turning up in the output of FreeVerbStereo, even with the input at 0 volume over sustained periods.

    Anyway, i spotted...
  31. Can confirm that MQS works nicely, but there...

    Can confirm that MQS works nicely, but there still may be a use for the PDM Filter: the MQS pins are the same as the hardware SPI so unless those can be remapped, this could allow the use of SPI at...
  32. Sorry wasn't aware of MQS or the output_mqs class...

    Sorry wasn't aware of MQS or the output_mqs class in the audio library (it's not in the audio design tool).
    I keep on finding useful things that I wish I knew about!
    Might still be useful for...
  33. PDM for simple audio ouput (no i2s DAC)

    Based on an idea from here:

    https://www.hackster.io/janost/audio-hacking-on-the-esp8266-fa9464

    I've just built a filter you can place in front of an AudioInterfaceI2S object that converts a...
  34. Replies
    834
    Views
    34,784

    LittleFS port to Teensy/SPIFlash

    I have a crude proof-of-concept port of the ESP8266 implementation of LittleFS to Teensy using SPIFlash.

    Except for the fact that the included SPIFlash library seems to hang with my 8Mbit Winbond...
  35. Replies
    1
    Views
    1,185

    Teensy 4.0 Watchdog?

    Hi, does anybody have sample code for activating the watchdog timer on Teensy 4.0- the examples I have seen are are all for 3.x?
  36. Replies
    109
    Views
    22,654

    Strange behaviour with Teensy 4.0 1.48-beta1 on...

    Strange behaviour with Teensy 4.0 1.48-beta1 on 1.8.10 MacOS 10.13. I can't get the Adafruit SSD1306 (1.3.0) library to work unless I set optimise to 'Debug' or 'Smallest Code'. This is using the...
Results 1 to 36 of 37