K
Reaction score
172

Latest activity Postings About

    • K
      kd5rxt-mark replied to the thread Teensyduino 1.62 Beta #2.
      @PaulStoffregen: thanks for your investigation & for the detailed follow-up description. I'll have to take a look to see if there's a candidate function to join the others in FLASHMEM, but in the meantime, using Smallest Code is no problem at...
    • K
      kd5rxt-mark replied to the thread Teensyduino 1.62 Beta #2.
      @PaulStoffregen: E-mail sent. Glad to help !! Mark J Culross KD5RXT
    • K
      kd5rxt-mark replied to the thread Teensyduino 1.62 Beta #2.
      OK, so Norton also cleared arm-none-eabi-objcopy.exe as well, only to then complain about & be suspicious of arm-none-eabi-objdump.exe. Fortunately, it cleared this one quickly & proceeded. Here's a summary of the final timing results on my...
    • K
      kd5rxt-mark replied to the thread Teensyduino 1.62 Beta #2.
      Norton finally cleared arm-none-eabi-gcc.exe, continued by complaining about collect2.exe, & then sent arm-none-eabi-objcopy.exe off for analysis (another couple of hours !!). Note that the following warning/error report was generated using the...
    • K
      kd5rxt-mark replied to the thread Teensyduino 1.62 Beta #2.
      Computer: ASUS Tuff Series gaming laptop running Windows 11 Pro Version 25H2 (OS build 26200.8524), with 12th Gen Intel(R) Core(TM) i7-12700H (2.30 GHz) w/ 64GM RAM. Build environment: Arduino 1.8.19 Source file: TeensyMIDIPolySynth Display...
    • K
      kd5rxt-mark replied to the thread SD.open()?.
      Did you also look at the wiki page ?? Has many of the details that you are asking/looking for . . . & no TODOs there :) . . . Mark J Culross KD5RXT
    • K
      kd5rxt-mark replied to the thread SD.open()?.
      @jim lee: Paul has created a CrashReport() <webpage> with useful details. You can also check the entry in the unofficial Teensy wiki <here> for links to descriptions of where to find the addr2line utility for both the old (1.8.x) & new (2.3.x)...
    • K
      In my TeensyMIDIPolySynth (TMPS), I have implemented a 3-voice 12-poly synth. The audio portion runs on a T4.0 (overclocked at 816MHz with no additional cooling, hovering at or below about 50 degrees C & staying just under 95% loaded when all...
    • K
      kd5rxt-mark replied to the thread RA8875 and T4 - library?.
      Full support for the RA8875 (optimized for use with the T4.x) comes as part the standard TeensyDuino installation, so no additional libraries are needed and/or need to be installed. Note that you'll need to edit the "RA8875UserSettings.h" file...
    • K
      @macardoso: RAM is allocated in chunks (16K / 32K ?), so until you move enough functions from RAM to FLASH to free up an entire chunk, the primary thing that you will see will be a gradual change in the "padding" number as you move more and more...
    • K
      Pictures of your setup would assist others in potentially identifying wiring problems, etc. Mark J Culross KD5RXT
    • K
      kd5rxt-mark replied to the thread PCB for synth..
      For the Teensy itself, try <this> or <this>. And for the Audio Adapter, I've attached one that I think I created back in 2020 (in an older version of KiCAD). Hopefully, you can make use of it. Good luck !! Mark J Culross KD5RXT
    • K
      I would suggest putting a 3-position pin header for the display power, and use a 2-position shorted jumper to select between the two power choices. The middle pin of the 3-position pin header would be connected to the power input to the display...
    • K
      kd5rxt-mark replied to the thread 3-Band EQ help.
      In my experience, for all inputs into a single mixer, the sum of these should never be allowed to exceed 1.0 (in your sketch above, your two xxxGain values can each theoretically reach 1.0, allowing their sum to theoretically reach 2.0). Try...
    • K
      @charnjit: Have you tried the granular example (Files > Examples > Audio > Effects > Granular) ?? Does it work for you, as expected ?? Mark J Culross KD5RXT
    • K
      kd5rxt-mark replied to the thread SWD with Teensy MicroMod?.
      @jerryk: I think this was already answered in your <other thread>. On all Teensy 4 varieties (T4.0, T4.1, T4MM), the JTAG interface of the IMXRT1062 is connected to the PJRC bootloader chip, so no external JTAG SWD is possible for any T4x...
  • Loading…
  • Loading…
Back
Top