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  • kd5rxt-mark's Avatar
    10-21-2021, 07:37 PM
    Mickey (fff54): You are very welcome & glad that I could be of some help. I received lots of excellent help on this forum when I first got started using the Teensy, so I'm doing my best to carry on that tradition !!...
    14 replies | 252 view(s)
  • kd5rxt-mark's Avatar
    10-21-2021, 04:15 PM
    Mickey (fff54): Yup, you are correct again !! I am guessing that you are in the process of learning C, and that's not a bad thing at all !! You are doing well !! As you correctly discerned, you will need to...
    14 replies | 252 view(s)
  • kd5rxt-mark's Avatar
    10-21-2021, 11:41 AM
    Mickey (fff54): Yes, you can do exactly what you have shown & use a different MIDI CC input to set the brightness individually for each strip. Good luck & have fun !! (And again, feel free to ask more questions) ...
    14 replies | 252 view(s)
  • kd5rxt-mark's Avatar
    10-20-2021, 10:22 PM
    @fff54: I'm not where I can get to my Teensy, so all of this will be off the top of my head: In your original post, you make the following call to activate a particular LED strip & the brightness is set by the...
    14 replies | 252 view(s)
  • kd5rxt-mark's Avatar
    10-20-2021, 09:56 PM
    Would it be possible to use the "button" library to take the 48Hz input clock as if it is a button input, & then setup the "button press action" to trigger on both edges of the input clock. When the "button press...
    9 replies | 214 view(s)
  • kd5rxt-mark's Avatar
    10-13-2021, 11:58 AM
    @Graeme: I don't know the entire technical reason(s) that endpoint 1 is not to be used, but there's a comment <here> by @Paul Stoffregen on another thread where he indicates that endpoint 1 is reserved for T4.x. ...
    4 replies | 156 view(s)
  • kd5rxt-mark's Avatar
    10-10-2021, 10:36 PM
    Tried going back to TD1.56b1 (not sure if this is valid, but it's what I did !!) & get a different error report, but still fails to build: C:\Program Files...
    31 replies | 1730 view(s)
  • kd5rxt-mark's Avatar
    10-10-2021, 10:25 PM
    I just loaded TD1.56b2 over 1.55 & I'm seeing the same "ExChar16_t" error reported (& failure to compile/link) for a sketch that previously built & ran correctly under 1.55: In file included from C:\Program Files...
    31 replies | 1730 view(s)
  • kd5rxt-mark's Avatar
    10-10-2021, 10:17 PM
    @fff (Fabrice): I have previously recommended (& still do !!) a display based upon the RA8875 controller (the supporting library comes with TeensyDuino). You can find the prior discussion <here>. Please feel free...
    2 replies | 194 view(s)
  • kd5rxt-mark's Avatar
    10-01-2021, 03:27 AM
    @Mcu32 (aka FrankB): Thank-you, I am happy to be on the receiving end of your ignore list. Now, if only you would be no longer willing to *write* unnecessary provocations, that would truly be an accomplishment. ...
    281 replies | 8637 view(s)
  • kd5rxt-mark's Avatar
    09-30-2021, 01:43 PM
    @Mcu32: I don't want anything from you except (maybe) to correctly understand the point I made. Here's a shaved-down version of my original post with just the pertinent info since you seem to have missed the point...
    281 replies | 8637 view(s)
  • kd5rxt-mark's Avatar
    09-30-2021, 12:21 PM
    Bill: I hope this answers the question that you are asking. Using Pete's code as follows as an example: // AGC - see https://forum.pjrc.com/threads/68320 #include <Audio.h> #include <Wire.h> #include <SPI.h>...
    57 replies | 1898 view(s)
  • kd5rxt-mark's Avatar
    09-30-2021, 12:11 PM
    @Mcu32: Speaking from personal knowledge & experience (I have 35+ years of experience developing & delivering multi-threaded, real-time, data intensive serial & network communications systems written in java and/or...
    281 replies | 8637 view(s)
  • kd5rxt-mark's Avatar
    09-27-2021, 04:02 AM
    Even better than referencing a post/thread (where you potentially have to dig all of the information+corrections out of several posts), @luni has placed a compendium of the info on using FlexIO into the WIKI <here>. ...
    53 replies | 2436 view(s)
  • kd5rxt-mark's Avatar
    09-23-2021, 10:14 AM
    @Armadafg: I can't offer a specific "solution" but you should make sure that you are using the latest Teensyduino 1.55, just to make sure that you have the latest core support (including T_MM). Hope that helps . . ....
    27 replies | 3283 view(s)
  • kd5rxt-mark's Avatar
    09-20-2021, 06:49 PM
    @vince.cemo: Paul has previously fielded requests for availability of small quantities of stock, for instance <here> . . . hope that helps. Mark J Culross KD5RXT
    1 replies | 279 view(s)
  • kd5rxt-mark's Avatar
    09-19-2021, 11:15 AM
    Sounds like fun. Would something similar to <this> be close to what you are looking for ?? It at least answers the speed question (specs 200ns, where you say you need <500ns). Sounds like you'd need the ability to...
    2 replies | 266 view(s)
  • kd5rxt-mark's Avatar
    09-17-2021, 07:59 PM
    @Mcu32: I'm sorry if you were offended by my last post. In each of my previous posts, when directly addressing my comments to you, I either chose "Reply With Quote" (to supply the context for my comment), or I...
    39 replies | 2533 view(s)
  • kd5rxt-mark's Avatar
    09-17-2021, 07:17 PM
    As my personal real-life example, the latest version of my TeensyMIDIPolySynth (which now uses the RA8875 display with on-screen sliders & buttons, instead of the original hardware version using pots & buttons & LEDs),...
    39 replies | 2533 view(s)
  • kd5rxt-mark's Avatar
    09-17-2021, 04:15 PM
    Yup, and now the default is no lst files. The release notes clearly give the reason for the change. Mark J Culross KD5RXT
    39 replies | 2533 view(s)
  • kd5rxt-mark's Avatar
    09-17-2021, 04:06 PM
    @Mcu32: No matter which behavior is made the default, there will be a group of users who will be opposed. If the default is "disabled", then those that want/use the lst files will be offended (as you seem to be). ...
    39 replies | 2533 view(s)
  • kd5rxt-mark's Avatar
    09-12-2021, 01:51 PM
    @Emmanuel: From my experience (definitely not an expert), when plugging the Teensy into my PC using the primary microUSB connector, I am able to use the Teensy as a MIDI device (input from the Teensy & output to the...
    2 replies | 205 view(s)
  • kd5rxt-mark's Avatar
    09-11-2021, 02:35 AM
    8-Dale: I was missing something very obvious !! I have not used MicroPython, so not recognizable as such to me. Sorry (both that I didn't recognize it & that I can't be of any help) !! Mark J Culross KD5RXT
    4 replies | 276 view(s)
  • kd5rxt-mark's Avatar
    09-11-2021, 02:10 AM
    Did you post the actual source that you are building & loading into the T4.0 ?? Are you using the Arduino IDE to build ?? What you posted does not build in the Arduino IDE & throws syntax errors on the first line. ...
    4 replies | 276 view(s)
  • kd5rxt-mark's Avatar
    08-28-2021, 05:35 AM
    @PaulStoffregen: OK, thanks for the clarification of your reply. I understand that I missed at least one key point: writing the key bits on a locked Teensy has to be done by a program signed with the current key. ...
    121 replies | 15422 view(s)
  • kd5rxt-mark's Avatar
    08-28-2021, 12:23 AM
    @PaulStoffregen: As a thought experiment, I'm wondering if the following would be possible: 1) Elsewhere (security document/description) it is covered that the key fuses start at '0' & are programmed to '1' 2)...
    121 replies | 15422 view(s)
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