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  1. Replies
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    hexodin - avr-gcc -> avrdude -> AVRISP MK II...

    hexodin -

    avr-gcc -> avrdude -> AVRISP MK II works fine.

    Jack
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    Sigh - The missing hash tag in the 1st line is...

    Sigh - The missing hash tag in the 1st line is there in the original - Sorry...
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    Thanks for taking the time to read this. The...

    Thanks for taking the time to read this. The whole enchilada:


    include <stdint.h>
    #include <util/delay.h>
    #include <avr/pgmspace.h>
    #include <avr/io.h>
    #include <util/delay.h>
    #include...
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    usb_serial and Teensy 2

    Hi -

    One of Paul's cool libraries that I have'nt used yet is usb_serial,

    so today I fired it up on a T2, and tried to connect with a PC file

    manager pgm that has an RS232 I/O option, via...
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    You don't mention (or I missed) if you are using...

    You don't mention (or I missed) if you are using a plug-in proto board;

    I've had enough trouble with these over the years that they're on the

    list of usual suspects when a circuit acts...
  6. Thread: WDT question

    by jack
    Replies
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    668

    WDT question

    I remember a thread a year or two ago about Teeny 2's WDT;

    a morning's search has'nt turned it up - Anyone know, what, if

    any, limitations there are it's use in the T2 implementation?
    ...
  7. Another gotcha with the W8 - WinAVR combination: ...

    Another gotcha with the W8 - WinAVR combination:

    Comodo Internet Security 2014 v6 also borks compiles.

    Workaround, (so far) : Un-install Comodo...

    Anyone have a better idea? TIA...
  8. Very good - Thanks again.

    Very good - Thanks again.
  9. Hexodin - Works! Thank you for helping. I'm...

    Hexodin - Works! Thank you for helping.

    I'm curious - I remember see that page while searching. How did you

    associate it with the problem?
  10. Thread: W8.1 / WinAVR

    by jack
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    2,895

    Thanks for the reply. My tablet came OEM with...

    Thanks for the reply.

    My tablet came OEM with W8.1 - I bought a BT keyboard & mouse with the

    tablet, & configed it to boot directly to the desktop. Metro pretty much stays

    in its cage - I...
  11. Thread: W8.1 / WinAVR

    by jack
    Replies
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    2,895

    Aargh - Correcting the ("?") error in line 1 now...

    Aargh - Correcting the ("?") error in line 1 now produces:
  12. Thread: W8.1 / WinAVR

    by jack
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    2,895

    Hi hexodin - Had any luck with this? I had to...

    Hi hexodin -

    Had any luck with this? I had to put it on hold to get some work done,

    but have some free time now. Platform is a Dell Venue 8 Pro, running

    W8.1 32-bit. I'm using Blinky (from...
  13. Thread: W8.1 / WinAVR

    by jack
    Replies
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    2,895

    W8.1 / WinAVR

    Have a new tablet to play with, so installed WinAVR & moved a known-good (as in - it compiles on my W7 laptop)

    file over to the tablet, where it does not compile, apparently because the .dep...
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    Teensy 2.0 + USB functions

    The usb_debug_only docs imply that usb_debug_only is not compatible with

    other usb functions - usb_serial, for instance.

    This seems to be the case; linking a test pgm with both functions fails,...
  15. UPS has entrenched itself among vendors because...

    UPS has entrenched itself among vendors because they offer parcel pick/up service

    to the vendor, at no apparent cost (to the vendor).

    The Canadian delivery surcharge scam exists because...
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    nlecaude - Thanks for hanging in there. I'm...

    nlecaude -

    Thanks for hanging in there. I'm going to take a look in the morning...

    best regards,
  17. Thread: Teensy 2.0 BOD

    by jack
    Replies
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    1,388

    35 views, no replies... All you fellows grad...

    35 views, no replies... All you fellows grad students?

    :)
  18. Thread: Teensy 2.0 BOD

    by jack
    Replies
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    1,388

    Teensy 2.0 BOD

    Paul -

    From a recent post by you:

    #define FUSE_MSB 0b11011111 // pg 350, bootloader, 512 bytes, using HWB
    #define FUSE_LSB 0b01011111 // pg 350, pg29 (8-16...
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    Teensy 2 Low-Pwr Question...

    Putting Teensy to sleep...

    // enable INT0, go to sleep, wake-up on BAV low...

    cli(); // clear global interrupt bit in SREG
    EICRA &= ~(1<<0); // low on...
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    Paul - You were right - It took several...

    Paul -

    You were right - It took several days... :cool:


    320
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    Thanks. This link has been useful: ...

    Thanks. This link has been useful: http://www.robot-electronics.co.uk/acatalog/I2C_Tutorial.html


    315


    Jack
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    T2.0 I2C pin configuration

    I'm new to I2C; to gain understanding I'm bit-banging I2C Master on PF6 & PF7.

    // initialize pins to open-drain with active pull-ups...

    DDRF = (0<<DDF7)|(0<<DDF6); // PF6..7 -> inputs
    ...
  23. Thread: CRC algorithm

    by jack
    Replies
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    5,070

    BTW, thanks for the pointer to reveng - Very...

    BTW, thanks for the pointer to reveng - Very cool. Just yesterday I banged out
    a CRC calculator that runs on my calculator.

    Jack
  24. Thread: CRC algorithm

    by jack
    Replies
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    5,070

    ...So, if you've got a question... I'll keep...

    ...So, if you've got a question...

    I'll keep that in mind, thanks. Have not yet got to T3s - I will.

    Jack
  25. Thread: CRC algorithm

    by jack
    Replies
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    5,070

    ...This may be helpful... Yes indeed!...

    ...This may be helpful...

    Yes indeed! Thanks...

    Jack
  26. Thread: CRC algorithm

    by jack
    Replies
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    5,070

    ...Teensy 3.0 also has a fast hardware CRC...

    ...Teensy 3.0 also has a fast hardware CRC peripheral

    Thanks! I'll keep that in mind ...
  27. Thread: CRC algorithm

    by jack
    Replies
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    5,070

    Thanks. Having read that, I revisited my earlier...

    Thanks. Having read that, I revisited my earlier calculations & found the error.

    n xor 0 = n ... duh... :(
  28. Thread: CRC algorithm

    by jack
    Replies
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    5,070

    CRC algorithm

    I'm working on reverse-engineering an old file transfer protocol, with
    Teensy 2.0.

    I found a document which has what's claimed to be the CRC algorithm.

    It does in fact work. I can monitor &...
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    My Teensies (2.0) don't show this behavior. I...

    My Teensies (2.0) don't show this behavior. I have'nt tried Teenyduino.

    FWIW, W7x64, HP laptop... Maybe it's a T3 or Arduino thing?

    Jack
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