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  1. It is working here. Should this long be...

    It is working here.

    Should this long be uint32_t so the count doesn't go oddly negative? :: volatile long int count = 0; // github.com/ftrias/TeensyThreads/.../examples/Print/Print.ino#L3
  2. Nice. Wondered about T4 GPT resolution …...

    Nice.

    Wondered about T4 GPT resolution … looks like it works to get better than 1 ms - with a 24 MHz clock for the GPT's :: int setMicroTimer(int tick_microseconds …



    int...
  3. Yeah the address space is flat 32 bit - so...

    Yeah the address space is flat 32 bit - so nothing but Linker assigned addresses in 32 bit pointers - the segmentation is handled in the build as directed - not with 8088 like segment registers.
    ...
  4. Nice, can you post a short sketch showing the...

    Nice, can you post a short sketch showing the alloc and usage?

    @KurtE - I skimmed that informative post - but after seeing the usage of .printf() versus .print() I got distracted with what I was...
  5. All of RAM memory is ~1024 KB. But it exists...

    All of RAM memory is ~1024 KB.

    But it exists in TWO parts/segments of 512 KB each. I've not seen a clear note of the rules I could share or learned enough to explain.

    A rough guess would need...
  6. TeensyDuino 1.47 was RELEASED - So with IDE and...

    TeensyDuino 1.47 was RELEASED - So with IDE and Teensy programs closed it should work to install that onto the same Arduino path after downloading : forum.pjrc.com/...Teensyduino-1-47-Released
  7. Mouser $5.09 "SRAM 4Mb 512Kx8 45MHz Serial SRAM"...

    Mouser $5.09 "SRAM 4Mb 512Kx8 45MHz Serial SRAM" - new part 'on order' - SOIC-8 : https://www.mouser.com/ProductDetail/ISSI/IS62WVS5128GBLL-45NLI?qs=byeeYqUIh0M7EH7gI3DsmQ%3D%3D
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    I'd connect for testing. @loglow - check...

    I'd connect for testing.


    @loglow - check RED box around USB Host connect on post #35 - "That underside placement shown here in RED BOX on top layer." - just copied on top to show spacing and...
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    Looked at this again - TeensyDelay looks like it...

    Looked at this again - TeensyDelay looks like it could be handy. Will be nice working with T_4.

    As far as the TIMER used - I scanned the github and it indicates this :: If you want to change the...
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    Is that lowly switch on the mkl02 the famous...

    Is that lowly switch on the mkl02 the famous Teensy *TM* Brickproofing Button?

    Valid assumption that those many extra mkl02 pins {versus T_3.x's} are somehow related to what might be a debug...
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    Paul - is the Rev D final silkscreen committed? -...

    Paul - is the Rev D final silkscreen committed? - I should have mentioned this earlier - during the T4 Beta handling the Audio boards I have to work to find which end is the GND/USB end to orient...
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    Glad to point that out … and Yes, that added...

    Glad to point that out … and Yes, that added clearance top and bottom to edge pins gives great silkscreen to help with orientation as the Teensy flips and rotates, or just finding a pin - for those...
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    That might be ideal - and sold stand alone - of...

    That might be ideal - and sold stand alone - of course that means a way to just get the USB Host pins to the PCB without it is needed too. Of course than looks like crossing cables with USBHost to...
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    As noted the T_4 USB just pushes data out faster...

    As noted the T_4 USB just pushes data out faster with no change in user sketch. What was about 25K 'lines per second' possible from a benchmark on T_3.6 comes out of T_4 at 150K to 300K lines per...
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    Something like this would be a major rewrite …...

    Something like this would be a major rewrite … but have both USB cables point to the same end - Teensy 4 on 'top' and the USB Host moved from far end to the underside. That underside placement shown...
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    For Windows users that like COMMAND LINE...

    For Windows users that like COMMAND LINE execution outside of the IDE [including your IDE of choice if it can exec batch files to build] { the IDE and TeensyDuino 1.47 must be normally installed as...
  17. Too late to check for updated source - but using...

    Too late to check for updated source - but using TD_1.47 and what I have that compiles I am seeing this error on SD cards in a USB Adaoter:

    Test logger_RawRead
    uSDFS_VER:30_Jun_19_07_17
    BUFFSIZE...
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    Soldering those top pins on Teensy 4 is easier...

    Soldering those top pins on Teensy 4 is easier and a bit less scary than others where parts are closer to the through holes.

    Take a look at the CARD or Teensy 4 images and you'll see a wide band...
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    Paul posted recently to a similar post - they are...

    Paul posted recently to a similar post - they are on his list of things to be done ASAP. It has been noted that his Schematic creation is manually created for usable detail - not just spit out from...
  20. Thread: Teensy 2.0?

    by defragster
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    Look around on www.PJRC.COM - there are specs and...

    Look around on www.PJRC.COM - there are specs and tables for all of them.

    The Teensy 2 is as good as the other AVR 8 bit Arduino's and the functions offered by it's pins are perfectly compatible....
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    That should change if pressing the Button Lights...

    That should change if pressing the Button Lights the RED LED. It should have the Teensy ready to load a working program - try a Simple Blink.
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    Sticky: >> One thing I found is Turning OFF the Teensy...

    >> One thing I found is Turning OFF the Teensy when being overly talkative - getting it off USB lets the computer clear up sooner/better with data while recompiling.

    Since it is buggy - it isn't...
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    Sticky: Very easy to do with the T4 not only passing in...

    Very easy to do with the T4 not only passing in and out of loop() a few times faster than even a T_3.6 ( 20 million versus maybe 3 M ) - but the USB speed went from 12 Mbps to 480 Mbps …

    Paul...
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    Doh - ran that sketch in beta - more than once …...

    Doh - ran that sketch in beta - more than once … of course I see 142 sketches in the T4 folder … I was going to mention @manitou … should have searched the sketches ...
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    Quick look at the sources and it seems that was a...

    Quick look at the sources and it seems that was a Kinetis (T_3.x) supported interrupt?

    Even less knowing look didn't find the same interrupt pre-Defined on T_4. RM suggests one could be created...
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    Not published - is it installed right there with...

    Not published - is it installed right there with EVERY copy of TeensyDuino :) I saw it again the other day ... inspiring th e following ...



    1 us intervalTimer is 1M interrupts/sec - much more...
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    Running that code it is trashing something - but...

    Running that code it is trashing something - but the T4 is certainly not Bricked - just Offline for USB until a Button Press.

    Changing the setup() code to this it will print to SerMon and toggle...
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    Above post is the quick worst case answer and...

    Above post is the quick worst case answer and likely not needed.

    What happens when the T4 is on USB abd the Program Button is pressed and released, i.e. not held? Does the bootloader RED led...
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    There is a process to recover the T4 - if it...

    There is a process to recover the T4 - if it really seems to be bricked.

    > USB CABLE plugged in for POWER
    > With the USB end in view to see the RED Bootloader LED
    > Press the Teensy program...
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    Based on prior page manitou posts - it seems the...

    Based on prior page manitou posts - it seems the use of pin #18 wasn't helping :: "pins 8 and 23 are flexPWM and they can do 75mhz " and "T4 PWM, discrete PWM frequencies are 150mhz/2, 150/3, 150/4,...
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    Sticky: TeensyInstaller only works against 'Arduino...

    TeensyInstaller only works against 'Arduino Release' versions posted on their web site. Not daily builds and not any version that may have been 'tweaked' in a way to change the JAVA core files PJRC...
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    Sticky: Odd there was something orphaned/stuck? Before...

    Odd there was something orphaned/stuck? Before last two beta installs for sure I scanned TaskMan for Teensy processes and none survived closing IDE and TeensyLoader before install. That was with...
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    I pulled the ZIP/EXE down - I see it is REM'd out...

    I pulled the ZIP/EXE down - I see it is REM'd out of my SublimeText TSET.cmd system - will go through that again with the new edits to TD files as needed and see what I see.
    With no Speed .menu item...
  34. The only MCU in Teensy 4.0 is the imXRT 1062...

    The only MCU in Teensy 4.0 is the imXRT 1062 chip!

    The 1062 chip evolved to shipping state suitable for quantity deliveries in early 2019 - until then it was not a usable part - but it is now and...
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    Just got to install the TD 1.47 B7 on yesterday's...

    Just got to install the TD 1.47 B7 on yesterday's new unzipped IDE 1.8.9 that got B6.

    Install looks good - a couple of sketches upload as expected - including ILI9341_t3.

    Also note - the NEW...
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    Speaking of Jinx'd deliveries - the box I was...

    Speaking of Jinx'd deliveries - the box I was happy to see arriving on Sat 10th - is still out driving around somewhere 'in transit' now on the 13th … Priority Mail fail.

    @el_supremo - I haven't...
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    EEPROM.write(address, value) where value is also...

    EEPROM.write(address, value) where value is also BYTE - so that is the Arduino rule followed for consistency across the device continuum … silly 8 bit world.
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    @mjs513 : Morphed the @manitou code to use...

    @mjs513 : Morphed the @manitou code to use FreqCount and showing similar results - on both T4's jumpered to themselves again.

    https://github.com/Defragster/T4_demo/tree/master/ManT_fCount
    ...
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    That looks like the Function Spec :: arduino.cc/...

    That looks like the Function Spec :: arduino.cc/ … /serial/write/



    Syntax
    Serial.write(val)
    Serial.write(str)
    Serial.write(buf, len)
    Parameters
    Serial: serial port object. See the list of...
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    I github'd a mod to that test :...

    I github'd a mod to that test : https://github.com/Defragster/T4_demo/tree/master/ManT_qTimer

    This is the process when PWM Freq is changed - valid?::

    if ( !(iiC % 4) ) {
    iiF += fStart/10;...
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    Looking at qtmr_count.ino...

    Looking at qtmr_count.ino it is the self same Teensy - so GND is probably good :)

    There was an issue on timing self same Teensy. I'm running these loops against FreqCount with pin jumpers on one...
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    Bummer on the delay - and having perhaps Jinxed...

    Bummer on the delay - and having perhaps Jinxed the delivery :( At least you got them while they were in stock!

    They are clean and works of art! But don't be disappointed - they really aren't...
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    Interesting - really squares off better with more...

    Interesting - really squares off better with more time - i.e. zoomed out of the transitions 6.5X

    Should have added a 4th query to drop Read() time:

    bool tgl=true;
    while (1)
    {
    ...
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    Thanks - I see that now ::...

    Thanks - I see that now :: IOMUXC_SW_MUX_CTL_PAD_GPIO_B0_11 = 1; // QT4 Timer2 on pin 9

    And … I got the freqCount code working …

    I did a quick version of


    static inline void...
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    Perhaps so :) prior post suggested...

    Perhaps so :)

    prior post suggested @bicycleguy saw a valid build for T4 of the ili9341_t3 - but that turned out to be with T_3.5 board selected.

    Indeed the T4 won't build with the TD1.47b6...
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    That ZIP link looks like a valid IDE 1.8.9...

    That ZIP link looks like a valid IDE 1.8.9 release build. If it fully unzipped then TeensyInstaller pointed to the right folder with Arduino.exe in it should accept installation. If not then there...
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    Not a good solution - but may be an improvement...

    Not a good solution - but may be an improvement and show something if it works.

    Do a Verify Build with 'Ctrl+R' - then press the button.

    If that doesn't work the install is broken getting the...
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    Yes - Work In Progress :) Indeed that shows...

    Yes - Work In Progress :)

    Indeed that shows using the Installed libs, however that shows it built for T_3.5 - which works, not Teensy 4. The problem is on compile for Teensy 4 the installed...
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    The nop may be executing in parallel? Directly...

    The nop may be executing in parallel? Directly from the dual exec - or indirectly while the bus clock is coming around for the change?

    Look into : static inline void delayNanoseconds(uint32_t...
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    until the release version in next day or so -...

    until the release version in next day or so - Latest and Best version is : 1.47-beta6 from msg 2 on the Beta T4 thread.
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