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    I realize this is a somewhat old thread, but in...

    I realize this is a somewhat old thread, but in case others stumble in here:

    You might understandably find it inconvenient to have a floating wire connected to the Reset pad under the Teensy 3.2,...
  2. Hi Paul, For my part, I made a backpack board...

    Hi Paul,

    For my part, I made a backpack board specifically to be able to reattach the broken-off USB connector to this Teensy 3.1, in hopes of tracking down the problem further.
    22213

    When I...
  3. Probably no big surprise, but the fresh Teensy...

    Probably no big surprise, but the fresh Teensy 3.2's work fine. No complaint of not responding to USB request to enter program mode.
  4. And on a little more thinking, I remembered this...

    And on a little more thinking, I remembered this post of mine regarding USB issues:
    ...
  5. Hey, thanks for the comment!

    Hey, thanks for the comment!
  6. Paul -- thanks for your detailed commentary! ...

    Paul -- thanks for your detailed commentary!

    Question: Is there some doc for the list of values in the reboot Status message?

    It's so odd that, as I reported, on the same machine (Computer A),...
  7. All these years and somehow I never knew about...

    All these years and somehow I never knew about that feature! Thanks!

    As it happens, Teensy Loader was still open, so here's an excerpt showing an attempt to program the Teensy 3.1. The key...
  8. Teensy 3.1: "Teensy did not respond to a USB-based request to enter program mode."

    I have seen a few previous threads on this subject, but none seem to quite apply.

    The main symptoms:

    Using:
    -- Computer A as host, Windows 10 Pro
    -- Teensy 3.1
    -- from the Arduino 1.8.13...
  9. Thanks for pointing out that kind of product....

    Thanks for pointing out that kind of product. Obvious when you know!
  10. Teensy 3.6 best approach for external SD card full size?

    I have my project running nicely using T 3.6's built-in micro SD card, and using a version of play_sd_wav library (revised to include 11k, 22k, and seek).

    But for user convenience, I need to...
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    Who exactly is going to be helped by...

    Who exactly is going to be helped by documentation that is incorrect? What possibly pedagogic purpose does that serve?
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    Doc bug: Wire Library page

    Hi all, but mostly for Paul, or at least his vast documentation department :-),

    Regarding page: "Wire Library" https://www.pjrc.com/teensy/td_libs_Wire.html.

    There are a couple of serious...
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    Thanks again, very useful.

    Thanks again, very useful.
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    Paul -- I wonder if you have example test wav...

    Paul -- I wonder if you have example test wav files that have the "features" that necessitated the STATE_PARSE4 and STATE_PARSE5 strategies to "ignore extra unknown chunks" (presumably after fmt) and...
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    Thanks Paul, that was very helpful, especially...

    Thanks Paul, that was very helpful, especially your thoughts on the slower data rates. And of course, it's understood you're chronically overloaded with other developments and support.

    For...
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    play_sd_wav library code questions

    Hi all, but probably for Paul:

    I've been studying the internals of play_sd_wav, and have a pretty good grasp on what it does.

    However a few points are puzzling:

    1. Several combinations of...
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    Perhaps this is the mentioned seek...

    Perhaps this is the mentioned seek implementation?
    https://github.com/mxmxmx/eurotrash_mkII/wiki/hacking
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    Thanks for the reply. If some people have...

    Thanks for the reply.

    If some people have implemented seek in the raw player, I'd be interested in seeing that, if someone could point me to it.

    Yes, one "tape side" readily fits on an SD...
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    Audio and MP3 player library questions

    I am looking at the feasibility of using Teensy 3.x with Audio and MP3 libraries as the basis of an audiobook player. (An audiobook player that would be tractable to users who have some cognitive or...
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    bigpilot: You might find something useful in...

    bigpilot: You might find something useful in this thread regarding Windows USB HID:
    ...
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    Hey, where's the "Like" button for this?:D

    Hey, where's the "Like" button for this?:D
  22. Thanks Paul for jumping in with that -- very...

    Thanks Paul for jumping in with that -- very helpful to know.

    Do you happen to have any technical references for the improvements to enumeration?

    I see that this Microsoft page leads to...
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    I have to add a big cheer for the article Paul...

    I have to add a big cheer for the article Paul wrote capturing this whole experience and a whole lot about some nitty gritty details of USB data structures and protocols: ...
  24. Thanks for raising this issue.. I hit it too....

    Thanks for raising this issue.. I hit it too. Windows 7 (the best one :D )
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    I am VERY disappointed. After carefully selecting...

    I am VERY disappointed. After carefully selecting a shipping option that guaranteed a lack of tracking, and then receiving an order acknowledgement that further confirmed a tracking-free order, I...
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    > You get tracking with both priority and first...

    > You get tracking with both priority and first class packages.

    You really should update the site and the email template then!

    Although small orders are not in themselves major profit makers,...
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    Well I just ordered using Priority. The auto...

    Well I just ordered using Priority. The auto response email (from auto-Robin) says


    Your package will be shipped by: "US Priority Mail"

    This is a low-cost service which does not have...
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    Postal Priority shipping -- tracking?

    Hi Paul or Robin:

    In the shopping cart step3 page, the Shipping Method details says that US Priority Main does not include tracking.

    Yet...
  29. Thanks for that response. If you're going to...

    Thanks for that response.


    If you're going to say something antagonistic, you might want to consider whether your assumption is true. I see that you frequently contribute in a positive way, so...
  30. Paul and KurtE: Thanks tremendously for your fast...

    Paul and KurtE: Thanks tremendously for your fast and very informative answers (and of course for the work on Teensy and the libraries).

    Regarding the keyboard nuances mentioned by KurtE -- thanks...
  31. USB Host library current status, keyboard especially?

    I wonder if Paul or someone could update on the current status of the USB Host library for models of Teensy with second USB port.

    1) The USB Host library is the one here, right?...
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    https://forum.pjrc.com/threads/45916-Teensy-3-6-VG...

    https://forum.pjrc.com/threads/45916-Teensy-3-6-VGA-driver/page3 for those following along at home. Fun experiment!
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    Yes, as I have done here: ...

    Yes, as I have done here:
    https://forum.pjrc.com/threads/23566-Teensyduino-USB-Joystick-no-data-driver-problem-workaround
    and here:...
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    OK, thanks Paul for clearing that up...

    OK, thanks Paul for clearing that up definitively. I guess I was misled by reading about the 480 Mb/s somewhere, for example in the quickstarter page:

    "USB High Speed (480 Mbit/sec) Port"

    ......
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    Yep I'm asking about prospects of the plain ol'...

    Yep I'm asking about prospects of the plain ol' installed USB connector running at High Speed 480 Mb/s when talking to PC (or other computer) host.
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    Yeah, I know all that. Like I said in the...

    Yeah, I know all that. Like I said in the original post, I'm looking for the HIGH SPEED feature (480 Mb/s) that Teensy 3.6 has the hardware for, not the 12 Mb/s. I'm interested in the Serial over USB...
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    Do you have a specific thread in mind? Note that...

    Do you have a specific thread in mind? Note that I'm asking about device mode, not host mode. That is, Teensy as slave to PC (like it "normally" is), not Teensy hosting other devices.
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    Teensy 3.6 USB High Speed status?

    Hi all,

    Could somebody tell the current status of the/a High Speed USB driver for Teensy 3.6? I.e.: for device mode on the installed micro-USB connector.

    Thanks -- Graham
  39. Hahaha thanks for the link. One way it's relevant...

    Hahaha thanks for the link. One way it's relevant is that the Cortex M3/M4 book I bought last week on Paul's recommendation will soon be obsolete. Doh! I knew that would happen.

    Anyhow, in that...
  40. Teensy 3.x External memory bus feature usability or substitute?

    Hi all, though probably for Paul:

    I see that the MCU in the 3.6, (and maybe some <=3.5 ones), has a configuration that allows for an external memory bus, allowing external devices (memory, FPGA)...
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    Let's first establish that there's no perfect...

    Let's first establish that there's no perfect solution here, given that the user has to manually make a hardware change to select in or out to coordinate with the software settings (and external...
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    I would strongly suggest reexamining the use of...

    I would strongly suggest reexamining the use of those TXB0108 bidirectional level shifters (and the related but different TXS0108) as GPIO level shifters. For that purpose they are horrible. They...
  43. Ah yes, of course. Thanks tni!

    Ah yes, of course. Thanks tni!
  44. Earlier mlu reported 0.9usec per call to micros()...

    Earlier mlu reported 0.9usec per call to micros() on 96MHz Teensy 3.0. I tried a similar test on Teensy 3.1 (using Arduino IDE 1.8.4 and Teensyduino 1.38):


    void loop() {
    long looptime;
    ...
  45. I don't understand your point.

    I don't understand your point.
  46. Wow Frank and Paul -- highly useful answers and...

    Wow Frank and Paul -- highly useful answers and links to other highly useful threads and docs. Thanks!
  47. Teensy 3.x Flextimer as counter: external reset?

    I'm looking at doing something that overlaps with what TelephoneBill did over here: https://forum.pjrc.com/threads/30822-Teensy-3-1-and-Flextimer(s)-Counting-external-pulses-accurately in that I need...
  48. Thanks Paul

    Thanks Paul
  49. elapsedMicros: how to disable almost all interrupts?

    When using elapsedMicros, (such as looping until a certain time) it would improve precision if unneeded interrupts could be disabled.

    However, elapsedMicros itself relies on at least some...
  50. Bug in delayMicroseconds: 25% too short for const delay < 64us

    Function delayMicroseconds(delay) for AVR Teensies has a significant bug that causes delays to execute in only 75% of the requested time, when both of the following are true:

    -- The requested...
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