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    • R
      As it turns out the display presence/absence was a red herring. Instead, as I anecdotally noted in the other thread where I wrote about this issue, there is variation across my T4.1 boards where some have the timeout error on the erase cycle and...
    • R
      Teensy 4.1, lockable (I'm just about to test to see if I get any different behaviors for hex and ehex files) (with no ethernet in case it makes a difference)
    • R
      It's interesting that without the display the erase time seems (probably just) short enough for the unextended version of teensy loader to work reliably. Whereas with the display connected I get a download error the first time, and success every...
    • R
      Thanks. For the macos build, I was told the Teensy loader times were noticeably slower than for the windows version. Is it possible to extend the macos version timeout even further for test purposes, e.g. to 2 minutes?
    • R
      Thanks Paul, I appreciate the added comments. However, the Teensy in my circuit board has a well bypassed linear LM7805 T0-220 regulator all to itself so it can optionally drive a MIDI controller on the USB host port. And the touch display is...
    • R
      Thanks, but my board has multiple regulators driven from a 9V plug pack, and doesn't use the USB 5V supply (track is cut). The Teensy, display, codec and analog circuits all have their own regulators.
    • R
      After further investigation (back on my own windows system), I found that if I program the T4.1 with it removed from my custom circuit board I can get it to work every time even without the extended delay. I subsequently put together a circuit...
    • R
      Thanks very much Paul, that's greatly appreciated. I won't be testing it myself as I know virtually nothing about MAC OS, but have someone else who is testing it for me. I'll pass on your comment about the notarization. Regarding the next beta...
    • R
      Hi Paul, are you able to make available a GUI version of Teensy loader with extended timeout for MAC OS (like the experimental version you did for Windows recently) ? It would be a great help to me. Thanks very much.
    • R
      rvh replied to the thread Help with Teensy Loader.
      Yes, what I'm after is a simple standalone GUI program that can upload ehex files to T4.1 without pressing the button on the board, and can run on Windows or MacOS. I sent a message to Koromix last year asking whether there were plans to...
    • R
      rvh replied to the thread Help with Teensy Loader.
      p.s. note that I'm referring here to stand-alone Teensy Loader use, without Arduino running. When called from within Arduino (after compiling), Teensy Loader starts the uplaod automatically, and with the extended 45 sec time-out I get no errors...
    • R
      rvh replied to the thread Help with Teensy Loader.
      Yes, after I load an ehex file into Teensy loader, it doesn't automatically start the upload to the Teensy. It shows the notice to press the physical button on the Teensy, and disables both Program and Reboot options (regardless of whether Auto...
    • R
      rvh replied to the thread Help with Teensy Loader.
      Excellent, thanks very much Paul! 45 seconds seems to do the trick for me. No errors so far with any of the T4.1 boards I've been testing, and the program auto-boots after upload every time. Do you happen to also have a MAC/OS version that I...
    • R
      rvh replied to the thread Help with Teensy Loader.
      Sure, understood. I'll see what I can do, but so far the modifications I've made to allow me to share the hex have also alleviated the problem.
    • R
      rvh replied to the thread Help with Teensy Loader.
      I opened two new Teensy 4.1 boards and tested those today, as well as retesting two of the boards that I've been developing with, which both showed the problem I've mentioned in this thread. For the new boards, I cut the VCC/USB trace and...
    • R
      rvh replied to the thread Help with Teensy Loader.
      Thanks Defragster. Maybe I misunderstand your example, but the problem I'm seeing relates to how much FLASH is taken up (mostly) by my large constant data arrays stored there, rather than the RAM2 use for the delay line. And it also needs to be...
    • R
      rvh replied to the thread Help with Teensy Loader.
      Thanks for the response Paul. Unfortunately I can't share the problem hex file as it stands, as it's commercially sensitive. But maybe I can modify it so it isn't functional but still produces the loader problem. If so, should I send you a...
    • R
      rvh replied to the thread Help with Teensy Loader.
      Also, I'm not sure who authored the GUI version of the loader (presumably Paul?), but it would be ideal if the timeout value for that could be changed.
    • R
      rvh replied to the thread Help with Teensy Loader.
      Thanks very much - definitely sounds like it's worth a try. Is the Windows version available for download? Another plus might be that it could be an alternative for my end users having to use both Teensy Loader and TyCommander - the latter to...
    • R
      I have a large synth project (much too large to post code) that stores many constant arrays containing raw drum samples in FLASH: FLASH: code:361728, data:7052072, headers:9172 free for files:703492 RAM1: variables:94496, code:358152...
    • R
      With the virtual ground approach there's likely a considerable risk of damaging the HP output if there's any other ground connection between the synth chip and the audio equipment you are connecting to the HP out. If you must use HP out, a...
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