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    Sticky: /tmp directory have proper permissions?

    /tmp directory have proper permissions?
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    Sticky: No problem :-)

    No problem :-)
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    Sticky: Probably the one in the OS path, even so, you can...

    Probably the one in the OS path, even so, you can increase the initial allocation at startup.
    type

    java -X
    to see the memory options.
    it's usually -Xms

    -Xms<size> set initial Java...
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    Sticky: Sounds to me like you need to tell the jvm to use...

    Sounds to me like you need to tell the jvm to use more memory so that it gc's less often?
    The
    -verbose:gc option should be helpful.
    On my system, 16GB RAM, 16 cpu's, Linux 64bit:

    IBM's java:...
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    If you are brave enough, you could see what...

    If you are brave enough, you could see what UHS3.0 does when it sees it connect. --- just don't use a hub, that's broken right now.
    You may find that it contains several interfaces, one of which...
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    Ahhh... and this is why I made HID device in UHS3...

    Ahhh... and this is why I made HID device in UHS3 agnostic as to what exactly is attached.
    Note that recent Teensyduino broke UHS3... not sure why exactly yet, but I have been working on finding...
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    You are very welcome :-)

    You are very welcome :-)
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    134 baud *is* a standard rate. The standard...

    134 baud *is* a standard rate.
    The standard low-end baud rates are:
    75
    110
    134.5
    150
    300
    600

    One of the modifications that we did many years ago on the Decwriter IV TTY was to add a switch...
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    Sticky: Just adding weak attribute adds zero code though,...

    Just adding weak attribute adds zero code though, if unused, and it is a one-liner.
    Not worried on the reboot case, that's OK. It's the case of where new firmware upload could be faulty...
    I'm also...
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    Sticky: No, the idea is to catch the firmware upload, and...

    No, the idea is to catch the firmware upload, and shutdown external devices when we _know_ we are going to reboot, which is different than not knowing.
    The startup hook isn't going to work, that's...
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    Sticky: @Paul Request for small change. Any chance to...

    @Paul Request for small change.

    Any chance to make _reboot_Teensyduino_() a weak definition so that code can do graceful shutdown of external devices before jumping to the bootloader?

    Currently...
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    Depends if you actually follow the standard, or...

    Depends if you actually follow the standard, or invent your own.
    If you are connecting to something that is a "standard" then there isn't much I can do to help.
    I usually treat CAN like serial,...
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    On linux (perhaps mac?) this is easy to do....

    On linux (perhaps mac?) this is easy to do.
    First know the com port, e.g. /dev/ttyACM0
    Then send the following to boot to the bootloader
    stty -F /dev/ttyACM0 134
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    Use intervalTimer

    Use intervalTimer
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    My IP implementation...

    My IP implementation
    https://github.com/xxxajk/ajkstack
    has a web server. HTH :-)
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    Cut the trace, insert a diode. Use another diode...

    Cut the trace, insert a diode.
    Use another diode on the other side.
    The source with the most current wins.
    As an additional bonus, if you lose power on either side, the Teensy will remain powered.
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    FWIW, is heap arena safe? If not, feel free to...

    FWIW, is heap arena safe? If not, feel free to refer to and/or improve upon and/or include a solution I have.
    https://github.com/felis/UHS30/tree/master/libraries/ISR_safe_memory
    This should...
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    Congrats on the release Paul. This MCU is...

    Congrats on the release Paul.
    This MCU is stupid fast, and I'm still thinking of some interesting data acquisition uses, and it *might* be even quick enough to do OpenCV. I'm still having to look...
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    Ok, that' a good thing. UHS3 copies to/from...

    Ok, that' a good thing.

    UHS3 copies to/from where ever the data comes from. If they are static buffers, this shouldn't be an issue.



    Yeah, I'll be looking at it sometime today, and see what...
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    That's why I'm asking.... basically I'd like to...

    That's why I'm asking.... basically I'd like to know if that line for SDcard (not USB adapter) is connected.
    If the 4.0 is EHCI, then UHS3 port should be very easy, since Paul helped in porting that...
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    @Defragster I've not had a ton of time here, got...

    @Defragster I've not had a ton of time here, got some now, though, but is the SDcard present line connected? Reason is that if it is, it can work on UHS30 which recently had SDcard added to it,...
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    DSB is the best way to do this because the other...

    DSB is the best way to do this because the other hardware blocks do not have access to CPU cache.
    Hopefully this doesn't double post, because I submitted earlier and it appeared to not post.
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    Instead of tossing them, if they are compatible...

    Instead of tossing them, if they are compatible with the final version of the board, why not do a contest or some other random promotion with them?
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    Got mine today! 3 days earlier than expected...

    Got mine today! 3 days earlier than expected (USPS notifies me even when the label was printed). I'll be doing some testing tonight!
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    @PaulStoffregen I'll take one! Going to be able...

    @PaulStoffregen I'll take one!
    Going to be able to have a bit more time to play, been working on LPC voice synth and my own "dev board" (different ARM chip).
    Email robin again?
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    Aware of them. I plan on making this one...

    Aware of them. I plan on making this one cooperate with the audio library, as an audio source. That way additional filters may be used, along with mixing, etc.
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    Excellent! Good to know it will work across the...

    Excellent! Good to know it will work across the entire ARM based toys. :-)



    It actually harks back to the 1980's type speech synth. Does fairly well with direct text, but can be also programmed...
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    @PaulStoffregen Since I only have the original...

    @PaulStoffregen Since I only have the original beta boards, I have a quick question... is changing the PWM frequency going to still be available? I'm pretty close to releasing a library that covers...
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    @PaulStoffregen Will there be debug pads/pins...

    @PaulStoffregen Will there be debug pads/pins available on the T4?
    On another note, I still need to make my Teensy3 JTAG programmer do SWD. :-)
    I plan on releasing it on GitHub at some point,...
  30. Thread: Kinetis KE1xF

    by xxxajk
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    I program mine using a Teensy 3.x via CAN. it's...

    I program mine using a Teensy 3.x via CAN. it's FAST!!!
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    memmov() is safer for ram ram if you know...

    memmov() is safer for ram <-> ram if you know that it is possible for overlap. Should be investigated on timing too.
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    Don't forget that it could have been hit by...

    Don't forget that it could have been hit by static electricity. Did you store it in the anti-static bag?
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    It is worth noting that C++ templates are...

    It is worth noting that C++ templates are actually considered a separate language. I try to avoid them when possible.
    Sometimes they make sense, though, and in some instances I have found that...
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    Best to use a rework station, if you *must* do it...

    Best to use a rework station, if you *must* do it manually. Otherwise use the reflow oven.

    Note that there is a registration hole on these connectors sometimes.
    For a small additional cost, the...
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    One thing that I find helps a whole lot when...

    One thing that I find helps a whole lot when dealing with test pads, is to have a via in the center that can accept the pogo pin tip. I try to avoid test points though, and just use full thruholes...
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    Dumb idea? How about an analogReadFast() like we...

    Dumb idea? How about an analogReadFast() like we have for digitalReadFast() that bypasses checks for the finicky who want to save every single cycle but not use DMA?
  37. Did UHS3 work too?

    Did UHS3 work too?
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    Cool, thanks Paul!

    Cool, thanks Paul!
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    I have a relay jig that I use for this exact...

    I have a relay jig that I use for this exact problem.
    I'll get a chance to look at mine this weekend, and see if I can manage to alter the board to do the same.
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    Examples are indeed within the libraries,...

    Examples are indeed within the libraries, depending on what you want to do and depending on what hardware.
    For serial devices, you will find the examples under UHS-HOST -> CDC-ACM. You will want the...
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    Try UHS3 it will work. As a bonus, all UHS3 UART...

    Try UHS3 it will work.
    As a bonus, all UHS3 UART interface drivers will appear as CDC-ACM (common API) but also do provide access to extra features on chip-specific serial bridges.
    ...
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    That will be coming soon once Kris is done with...

    That will be coming soon once Kris is done with holiday, supposedly.
    Of course pull requests are always welcome, and porting is quite easy to do.
    Technically you don't even need a library to...
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    UHS30 works out-of-the-box. UHS2 is going to be...

    UHS30 works out-of-the-box. UHS2 is going to be obsolete soon due to quirks and various politics going on.
    UHS3 will also be moving to my own account soon as well.
  44. Pushed some fixes, enhancements. Let me know if...

    Pushed some fixes, enhancements. Let me know if Novation Launchpad works now, or not.
    The Audio Control subclass isn't supported, needs an interface driver for that.
  45. Novation Launchpad... any chance you can give me...

    Novation Launchpad... any chance you can give me a
    lsusb -vdVID:PID on Linux for that? I should be able to make it work.

    T3.2 testing midi... Well, I don't "care" in the fact that I've never...
  46. The actual core of UHS3 is quite fast. I'd have...

    The actual core of UHS3 is quite fast. I'd have to say if it acts that way across everything, then it is UHS3, else it is the t3.2 code.
  47. Novation Launchpad isn't a regular midi device. ...

    Novation Launchpad isn't a regular midi device.
    Seems to require special protocol from the quick look at various open source attempts to get it to operate on Linux.

    Basically, if you can place...
  48. @uleria It might not be reporting as standard...

    @uleria It might not be reporting as standard midi, or isn't a standard midi device.
    If it just doesn't report as midi, but actually is midi, then the vid and pid can be used to select the device....
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    Have you tried the following to reduce temp and...

    Have you tried the following to reduce temp and power consumption instead?


    while(1) __asm__ volatile ("wfi");

    That will put the cpu core to sleep, but allow it to do anything important, which...
  50. Works! Amazingly this is the first MCU able to...

    Works!
    Amazingly this is the first MCU able to keep up with the Arturia Minilab!
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