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    Found this that might be of interest going...

    Found this that might be of interest going further: https://www.linuxtv.org/wiki/index.php/RealTek_RTL2832U#Device_info. Interesting so I put it here so I don't loose the link
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    Oops missed this. Don't see it. Maybe its...

    Oops missed this.

    Don't see it. Maybe its looking at like a HID device. Its not showing device class?
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    Could this be it: ----------------------...

    Could this be it:

    ---------------------- Device Descriptor ----------------------
    bLength : 0x12 (18 bytes)
    bDescriptorType : 0x01 (Device Descriptor)
    bcdUSB ...
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    Short answer is that i2c_t3 doesn’t work with...

    Short answer is that i2c_t3 doesn’t work with teensy 4.0 or 4.1 you will have to switch to just using standard Wire library. But I don’t think wire supports wire.stautus
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    Yes definitely Paul - HAPPY BIRTHDAY !!!!! ;) ...

    Yes definitely Paul - HAPPY BIRTHDAY !!!!! ;)

    Enjoy your day :)

    Funny mine was yesterday the 28th :)
  6. @KurtE - @wwatson Would think you would need a...

    @KurtE - @wwatson
    Would think you would need a UsbFS pointing to each partition?

    Think it was like my thought that for each partition you need a addfilesystem(....,....,..., partition number) so...
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    At 24 pages, think that its going on the list of...

    At 24 pages, think that its going on the list of things to do :)
  8. Cool. So many choices. Think volume stuff needs...

    Cool. So many choices. Think volume stuff needs to be added to volume interface - would make it more transparent I think ?
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    Just ordered the one Kurt posted as well - told...

    Just ordered the one Kurt posted as well - told you I am in trouble when I get curious.
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    Yes it does - has the right components and same...

    Yes it does - has the right components and same labeling.
  11. To be honest - think it should as well. Would be...

    To be honest - think it should as well. Would be good info to have available and inline with SDFat-beta
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    Yes please. Now I am curious which implies I am...

    Yes please. Now I am curious which implies I am in trouble :)
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    Something like this:...

    Something like this:
    https://www.amazon.com/Digital-Receiver-Antenna-Multi-Picture-Display/dp/B07MBGTVFV/ref=sr_1_4?dchild=1&keywords=dvb-t+receiver&qid=1614605707&sr=8-4
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    Is this what you are trying to implement: ...

    Is this what you are trying to implement:

    Child Device 2 : HID Infrared Remote Receiver ?

    Be honest - I would plug it in with all the debug turned on and see what it recognizes and...
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    @Frank B Might be easier to know what device you...

    @Frank B
    Might be easier to know what device you are trying to connect to USB host.

    When I was trying to add new devices I would start by turning debug on in USBHost, and the different .cpp files...
  16. Just re-synched and seems to be working. Put in...

    Just re-synched and seems to be working. Put in the SD Card Adatpter with 3 partitions:

    Waiting up to 5 seconds for USB drive 1
    ^Waiting up to 5 seconds for USB drive 2
    ^^^^^^^^~~~~:(Initialize...
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    @defragster Didn't have the problem with the...

    @defragster
    Didn't have the problem with the java exceptions that you saw. SerMon would come to life if I closed it and reopened but would stop again.

    I did notice that TyCommander didn't have...
  18. @KurtE Just tried compiling for the T4.1...

    @KurtE
    Just tried compiling for the T4.1 (VolumeName.ino) in the examples folder and got the following error:
    ...
  19. @KurtE Fantastic job.... think duplicating the...

    @KurtE
    Fantastic job.... think duplicating the sub-library was the best approach and then modifing it. Will download and give it a try.
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    @defragster Thanks for confirming the issue --...

    @defragster
    Thanks for confirming the issue -- glad it is not just me.
  21. Not quite sure how that is being done but I did...

    Not quite sure how that is being done but I did see in micros() looks like you have to wrap msec = systick_millis_count; with disabling the interrupt and then re-enabling it.
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    Guess that answers that question :)

    Guess that answers that question :)
  23. @KurtE Ran a test with analog read in the...

    @KurtE
    Ran a test with analog read in the interrupt and worked down to 20us. This makes sense since analog read is taking about 17us.

    Did get response on github discussion:


    So pretty much...
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    @KurtE My advanced c++ skills are limited to...

    @KurtE
    My advanced c++ skills are limited to looking things up as I go :)

    Anyway, what you say seems to make sense, at least to me. Now just to decided where to put all this. At this point...
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    Morning @all @KurtE - ambitious and good luck....

    Morning @all

    @KurtE - ambitious and good luck.

    But to your point on SDCards - think you are going to have to implement something similar if it has more than one partition. But I think if you...
  26. Morning @KurtE Yeah me too! within the...

    Morning @KurtE
    Yeah me too!

    within the interrupt it just calls off to analogRead - nothing fancy going on there. Was thinking about that myself especially since I have the test in post #19 as...
  27. SOLVED: Ok just to say thanks to everyone for...

    SOLVED:

    Ok just to say thanks to everyone for helping and let you know that I finally tracked down the issue.

    It appears that problem is using analogRead is not interrupt friendly.

    The...
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    Just messed up my sdfat lib as well just for a...

    Just messed up my sdfat lib as well just for a another data point for you.:
    This is for a SD Card with 2 FAT32 and 1 exfat:

    msc # Partition Table
    part,boot,bgnCHS[3],type,endCHS[3],start,length...
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    Maybe using the drive as the pointer instead of...

    Maybe using the drive as the pointer instead of the volume so everything in MTP going to associated with the drive not the vol?
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    @KurtE Was toying with something like this for...

    @KurtE
    Was toying with something like this for MTP but don;t think I am passing the right things:

    uint32_t sd_addFilesystem(FS &fs, const char *name, const char *volumeID) {
    if...
  31. @Frank B Assume you are talking about the...

    @Frank B
    Assume you are talking about the USBHost Shield 2.0: http://shop.tkjelectronics.dk/product_info.php?products_id=43

    If you are I have the original version and it works for teensy 3 and 4...
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    Makes absolute sense to me - that sketch is...

    Makes absolute sense to me - that sketch is coming in handy for testing.
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    Very cool = I just gave you last set of chances a...

    Very cool = I just gave you last set of chances a try and they worked = both thumb drives came up - even the SD Card.
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    Thanks will pull down the latest changes and give...

    Thanks will pull down the latest changes and give it a go. Not even going to touch linux - having enough problems :)
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    @KurtE Just tried your updated MTP and this is...

    @KurtE
    Just tried your updated MTP and this is what I am seeing. Look like it works for SSD:

    MTP_test
    sd_addFilesystem: 0 20006328 RAM1
    RAM Storage 0 RAM1 199936 512
    sd_addFilesystem: 1...
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    Morning all Decided to start playing. Ran...

    Morning all
    Decided to start playing. Ran @defragster's updated sketch on 3 devices: (1) an old 2GB thumb drive (FAT16 only), (2) a 32GB Sandisk thumb and (3) my HP 120GB SSD.

    One thing I...
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    @KurtE Was just looking over your code snippet...

    @KurtE
    Was just looking over your code snippet so this is a question - it may be buried but I don't see where you are setting up expartVol/partVol .begin for the different partitions and then...
  38. Trying a whole host of things but no luck. Hate...

    Trying a whole host of things but no luck. Hate issues like this reminds me of UncannyEyes! Going to go back and play with MSC/MTP!
  39. @luni Found the problem - the program for...

    @luni
    Found the problem - the program for doesn't like going to USB1 when using a T3.5 and T3.6. Removed it and got everything started working as before. Did test with a T3.2 but it hanging...
  40. Funny it worked with the code I posted now must...

    Funny it worked with the code I posted now must have did something to make it fail. Going to run a test just to see with time.h.

    EDIT:
    Something else must of broke. Just this test sketch and it...
  41. Nope nothing else gets printed as I am playing. ...

    Nope nothing else gets printed as I am playing.

    BTW will it work with a Teensy 3.x
    Remember when I said it was working for a T3.5 well now its not working - argh. - no start up info from timer.h...
  42. @luni Seeing exactly the same thing on startup...

    @luni
    Seeing exactly the same thing on startup as you:

    init 0x0
    setPeriod(58)
    attachInterrupt()
    start
    out of curiosity I switched the prog track to use pins 3/11 just in case. No difference
  43. @KurtE Did try and putting asm("dsb")'s in...

    @KurtE
    Did try and putting asm("dsb")'s in different places associated with the interrupts but still had the problem. Tried playing with volatile's as well but no luck.
  44. Ok now have another interesting thing going on. ...

    Ok now have another interesting thing going on.

    I wanted to try with a Teensy 3.6 but as soon as turn power on with the sketch loaded the T3.6 is sending signals to the lock to move but its not...
  45. Will give it a try - just after a fresh pot of...

    Will give it a try - just after a fresh pot of coffee.
  46. Oops - thats @Frank B's library = I added it get...

    Oops - thats @Frank B's library = I added it get freemem for the T4.1: https://github.com/FrankBoesing/T4_PowerButton

    Sorry about that - forgot I was using it so distracted with the other problem.
  47. Ok lets see if I can explain this without...

    Ok lets see if I can explain this without tripping over myself. A virtual timer is set up in Timer.h that calls off to IntervalTimer that does a attachInterruptVector. The sketch then calls off to:...
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    Morning all Actually no, didn't get a chance to...

    Morning all
    Actually no, didn't get a chance to look - too many other distractions last couple of days :)

    I agree with you Kurt 100%.

    Oh - one thing I noticed is that if you put in a SD...
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    Serial monitor seems to be hanging again similar...

    Serial monitor seems to be hanging again similar to what happened in T4 beta testing: https://forum.pjrc.com/threads/54711-Teensy-4-0-First-Beta-Test?p=213179&viewfull=1#post213179

    If I run this...
  50. Thanks thought crossed my mind - so I tested...

    Thanks thought crossed my mind - so I tested yesterday down to 24Mhz. But as a double check after your suggestion I just tested at 150Mhz - still stopped after a couple tries. Even tried tried...
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