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    Yes, there it is - it has a link to TRNG ::...

    Yes, there it is - it has a link to TRNG :: https://forum.pjrc.com/threads/54711-Teensy-4-0-First-Beta-Test?p=195000&viewfull=1#post195000

    To link to a specific post - right click on the post # -...
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    Those sketches have likely not been updated for...

    Those sketches have likely not been updated for Teensy 4 hardware registers. Have to check the Beta Teensy 4 thread to see if there is a note
  3. Thread: Bum 3.6?

    by defragster
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    I found the odd unit here when I ordered the KS...

    I found the odd unit here when I ordered the KS Bulk pack. Just pulled each from shipping and upload sketch and button pushed in some fashion - one acted odd but I dismissed it as user...
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    Search forum for "CS42448" - there were notes...

    Search forum for "CS42448" - there were notes about it being used in some fashion that may be a starting point.

    But indeed only USB Serial is working on T4 at this time
  5. Indeed only 2 sets of 512KB - 1.5 MB would be...

    Indeed only 2 sets of 512KB - 1.5 MB would be cool … maybe the next version.

    Never filled the filled the first 512KB of RAM and had T4 halt/not boot? If you have a repro case I wonder if there is...
  6. Thread: Bum 3.6?

    by defragster
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    I started to reply with the only test that came...

    I started to reply with the only test that came to mind - beyond soldering issue.

    Before soldering was there a series of uploads and button presses done to say if 'normal' behavior was seen from...
  7. Nice looking work! AFAIK the answer to this is...

    Nice looking work!

    AFAIK the answer to this is : Using DMAMEM provides compile time alloc to the same area that malloc() uses at runtime - the second 512KB RAM block.
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    For the cable - taking drawing above for a quick...

    For the cable - taking drawing above for a quick hack in paint - removing the 3v3 and GND would help with the trouble observed here - and particularly the lockups maybe it wasn't a current problem...
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    I can confirm that @KurtE - no selection when...

    I can confirm that @KurtE - no selection when offline.

    Also BATCH #3 of Teensy 4.0 must have been a BIG one - and #1 and #2 none too small. SparkFun has this on that item::
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    Reading of the Flex Connector loose fit I wasn't...

    Reading of the Flex Connector loose fit I wasn't going to use - but mine locked in tight - no wiggle - no play, so I soldered it … have since removed it :(

    So far the 15 second Restore is...
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    @loglow - safe travels. Standoffs sound...

    @loglow - safe travels. Standoffs sound outstanding, the ones I have are too large for the holes provided.

    I didn't get back to the iron to check on USB line(s) I lost - will be another day - they...
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    @firehopper - those resistors are only needed or...

    @firehopper - those resistors are only needed or used when the indicated BUS ( i2c or SPI ) actively uses those pins and the resistors apply a pull-up for those pins. If those pins are put to other...
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    Using a Teensy 3.2, 3.5, 3.6 to prototype you can...

    Using a Teensy 3.2, 3.5, 3.6 to prototype you can start working immediately - Teensy 4.0 support will arrive ASAP and should be expected to be compatible when complete.

    At this time Teensy 4.0...
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    mod PinTest was hidden as attachment in p#93...

    mod PinTest was hidden as attachment in p#93

    T4 breakout dried overnight and seeing pin 37 showing 700 Ohms to 3V3 and pin 36 now at 5K Ohms to 3V3. Pin #36 looks much better.

    Pin #36 not on...
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    just a guess: the missing timestamp is part of...

    just a guess: the missing timestamp is part of recent speed rework work in progress?

    t_sermon running here since last post now beyond this 27778 seconds - but running fine and no amount of...
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    @Paul: Did UNZIP of 1.8.10 on Windows 10. ...

    @Paul: Did UNZIP of 1.8.10 on Windows 10. TeensyInstaller ran well - no issues. IDE 1.8.10 must not be on KNOWN list yet as I had to tell Windows to RUN ANYWAY. Had to Approve JAVA as usual - then...
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    Went back with the hot iron solder sucker to try...

    Went back with the hot iron solder sucker to try to pull out solder from that edge. Actually the measured resistance was 122 oms not 145. Then I bumped the meter to 2K from 200 range and pin 37 had...
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    Thanks for that … it was just a TEST - I get...

    Thanks for that … it was just a TEST - I get stalling on Win 10 when I resize a BUSY window - it was happening intermittently, though I stopped waiting for that when I spend a couple seconds resizing...
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    Thierry - when it stops - add another Teensy or...

    Thierry - when it stops - add another Teensy or plug in or remove some other USB device - mouse - flash drive. Any chance that makes it restart?

    257K is a good speed - a shame it dies and eats...
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    News but, - not much good - but I managed to...

    News but, - not much good - but I managed to de-solder the ribbon clamp connector with clean pads intact! Dipping clean end of de-solder braid in flux paste is magic! Connector isn't usable though...
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    I added a short header to the breakout - rushing...

    I added a short header to the breakout - rushing I put it on the bottom instead of the top as intended - opps.

    But it works I wired 34,35,36 in sequence jumpered to 37,38,39.

    So this code...
  22. The count of samples { # is 128 } is for 16 bit...

    The count of samples { # is 128 } is for 16 bit samples AFAIK.

    And indeed the pointers noted are to 32 bit values - so they are being consumed/processed 2 at a time.
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    Surprise Fun! arduino.cc/en/Main/ReleaseNotes...

    Surprise Fun!

    arduino.cc/en/Main/ReleaseNotes :: ARDUINO 1.8.10 2019.09.13

    a few things in SerilMonitor - hopefully not merge issue with your t_sermon.

    Nothing super fun for Teensy?

    Added...
  24. With that small snippet of code I can't tell if...

    With that small snippet of code I can't tell if the translation for the 'units' is 8 bit .vs. 16 bit or 16 bit .vs. 32 bit but::

    'end' is the stopping point for the loop. It is based on 'pa' the...
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    Back home - IT SEEMS TO BE WORKING WELL … more...

    Back home - IT SEEMS TO BE WORKING WELL

    … more uploads to T4 and notes shortly …

    All was well - did simple sketches and USB SD Dongle test no problem … moved SD card to SDIO socket and it...
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    Yes, to the best of my patience and ability -...

    Yes, to the best of my patience and ability - some notes in p#145. Did pin tests to breakout pins on PCB from the connector pin legs with DVM and then the PinTest sketch. Tried adjacent pins for...
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    Not sure what is up with the assembly? I see 5V...

    Not sure what is up with the assembly? I see 5V on expected places : VIN, Switch, VHST, VUSB, and high side of two bottom caps? I see 2.5 (?) volts on POWER. Zero on PGM and Top CAP. Near half a...
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    Did a { reflow/futz/desolder/reflow/DVM } test...

    Did a { reflow/futz/desolder/reflow/DVM } test cycle on SDIO/USB connector pins the past 30+ mins. USB WORKS to read SD card with USB Dongle!

    Same SD card fails on SD Socket - going to hope...
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    Indeed I got the SD shroud off - and seemingly...

    Indeed I got the SD shroud off - and seemingly back on after making it look like it was soldered :)

    Then I got the Ribbon connector to 'look' soldered.

    I gave up trying to hack up short AdaF...
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    Nice work on the research. As noted AFAIK that...

    Nice work on the research.

    As noted AFAIK that is the PJRC standard serial number generation from the unique device MAC : "similar to prior Teensys but MCU specific" in where MAC comes from.
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    Since the SD isn't part of what needed - that...

    Since the SD isn't part of what needed - that being optional is okay with me - needs a radio too.

    The ESP32 was really power hungry with WiFi ( and adding the Teensy ) - the ESP32 PICO looks...
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    Indeed 12 bit - That was noted during...

    Indeed 12 bit - That was noted during development in the Beta T4 thread and the ref man AFAIK.
  33. The M0 'bootloader' chip on JTAG port is what...

    The M0 'bootloader' chip on JTAG port is what makes it a PJRC Teensy. It enables upload of HEX files over USB port. Giving full access to CPU and its function in a usable and ideally UnBrickable...
  34. If the user code never exits loop() - that is...

    If the user code never exits loop() - that is mostly baremetal - leaving loop() calls Arduino tyoe yield() before returning to loop().

    There are just lots of libs and resources made active or...
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    Didn't see it come up in beta or since - but the...

    Didn't see it come up in beta or since - but the Serial Number of Teensy is derived from the MAC ID in this code in ...\hardware\teensy\avr\cores\teensy4\usb_desc.c:


    void...
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    Nice pics - that even captured the USB chip label...

    Nice pics - that even captured the USB chip label '|S11' - and lots of flux goop. Printed them for my assembly reference in a few hours ...

    Glanced last night and the SD pins under shroud are...
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    I measured my battery and my cheapo meter showed...

    I measured my battery and my cheapo meter showed 3.25V.

    My flux ends up tacky { not sure if from solder core or my paste tub } - so if not all gone when I hit with a paper towel I get paper fibers...
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    That would add some thickness to the build - but...

    That would add some thickness to the build - but with that not only ease of battery access and isolation from the through pins as soldered - but also a non metallic bottom bumper with that insulating...
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    The MINI Tactile is on the POWER On/Off signal -...

    The MINI Tactile is on the POWER On/Off signal - holding about 5 secs should take it to OFF and then will power up with a ~half second press. This takes the end pin connect for that to be properly...
  40. Try it with the default 256 setup on samples...

    Try it with the default 256 setup on samples perhaps - and pull the code from \hardware\teensy\avr\libraries\Audio\examples\MemoryAndCpuUsage\MemoryAndCpuUsage.ino to see how much CPU is left? Then...
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    See if TONE on this page works for you:...

    See if TONE on this page works for you: pjrc.com/teensy/td_pulse.html
  42. Cool - I didn't go looking after it caught my eye.

    Cool - I didn't go looking after it caught my eye.
  43. Like are the T4 SDIO pins in use and well...

    Like are the T4 SDIO pins in use and well connected somehow? SDIO pins work great as used - but there were good connects from Teensy 4 to the board and socket.
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    No time but felt compelled to start before OOF...

    No time but felt compelled to start before OOF the next two days.

    Rigged up a perf board with pins and cross pins to hold the 10 pad under 2x5 in place and soldered the far end - used some solder...
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    @Paul noted plans to release TD 1.48 Beta 1 in...

    @Paul noted plans to release TD 1.48 Beta 1 in coming days. MAC is a big thing for Paul - would expect this to be resolved - maybe It is a problem with the IDE 1.8.9? This is the first note I've...
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    @KurtE has gotten it to work across many displays...

    @KurtE has gotten it to work across many displays - it has some unique properties.

    Just looking at github.com/PaulStoffregen/SPI it was updated yesterday to adjust for pin settings. That will be...
  47. Not cool - didn't recall seeing that noted. Just...

    Not cool - didn't recall seeing that noted. Just tested mine to work again. I have two same SanDisk cards - one has gone not working - the other does above USBHost MSC test at 6 MB/sec
  48. That sounds extreme on the bending at that not so...

    That sounds extreme on the bending at that not so flexible part of the cable.

    USB support is cool. I see you visited this thread : USBHost_t36-USB-Mass-Storage-Driver-Experiments, will be...
  49. noted in p#5:: This needs to be called with '1':...

    noted in p#5:: This needs to be called with '1': void averageTogether(uint8_t n) {

    So in setup() :: myFFT.averageTogether(1);

    That will have each read count as a data point rather than the...
  50. Looking at FFT256 once for speed I found it sets...

    Looking at FFT256 once for speed I found it sets averaging to 8 by default so that needs to be changed to actually complete faster than an FFT1024.

    See:...
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