Forum Rule: Always post complete source code & details to reproduce any issue!

Search:

Type: Posts; User: defragster

Page 1 of 10 1 2 3 4

Search: Search took 0.07 seconds.

  1. The first block looks about right - the second is...

    The first block looks about right - the second is not right.

    As included in the 3rd code block that looks about right. These statements may be causing trouble? Unless their example shows doing...
  2. Looking at a Teensy Card it indicates the...

    Looking at a Teensy Card it indicates the hardware pins for the busses - for SPI hardware usage the appropriate pins or alternates need to be used. As shown in post #15

    These are specified for a...
  3. Replies
    3
    Views
    110

    not that one - had to look …...

    not that one - had to look … Pins-to-bring-out-on-a-hypothetical-larger-Teensy4
  4. Replies
    3
    Views
    110

    There is a now closed thread created in Oct 2019...

    There is a now closed thread created in Oct 2019 while a next Teensy follow on to the 4.0 was being discussed. That idea was presented and passed over on that thread. What the new Teensy 4+ will be...
  5. Oh indeed - 24 pins of color per pixel is much...

    Oh indeed - 24 pins of color per pixel is much more.
  6. Looks like the T_3.6 VGA used 8 bits? Never...

    Looks like the T_3.6 VGA used 8 bits? Never looked into the code. I suppose the problem may be having the 8 bits on a port?

    That first linked read example pulls from multiple ports and combines...
  7. Here is a post on multi bit port read :...

    Here is a post on multi bit port read : https://forum.pjrc.com/threads/58377-Reading-multiple-GPIO-pins-on-the-Teensy-4-0-quot-atomically-quot?p=221412&viewfull=1#post221412

    There are other...
  8. What version of TeensyDuino is in use? TD 1.51...

    What version of TeensyDuino is in use? TD 1.51 is the current version.
  9. Replies
    5
    Views
    203

    Generally yes, and as done posting it on the...

    Generally yes, and as done posting it on the change request post for TD 1.52 gets it on the list.
  10. Replies
    5
    Views
    203

    That agrees with results by @neurofun as well....

    That agrees with results by @neurofun as well. First indication of usage and wasn't changed since enabled on T_4 IIRC.

    Will have to be on Paul's list to resolve.
  11. Replies
    1
    Views
    50

    The Rev D board is wired for direct connect to a...

    The Rev D board is wired for direct connect to a Teensy 4.0 with pins moved as needed from the T_3.x locations.

    For direct solder a Rev C Audio board works on the Teensy 3.2/3.5/3.6.

    To use the...
  12. Replies
    14
    Views
    635

    Starting with the IDE is easy enough and allows...

    Starting with the IDE is easy enough and allows testing and forum posting and support as needed: install IDE then TeensyDuino and it works.

    @luni made a VsCODE addition that is great with Teensy...
  13. Replies
    42
    Views
    1,978

    Was it compiled with tools / USB type of MIDI? as...

    Was it compiled with tools / USB type of MIDI? as noted in above output?


    Those objects won't exist when MIDI isn't among the USB parts selected when building.
  14. Replies
    42
    Views
    1,978

    I don't find those things? Changes and...

    I don't find those things? Changes and corruptions not right.

    There is : T:\arduino-1.8.12\hardware\teensy\avr\libraries\Audio\synth_wavetable.h

    Where this is defined : class...
  15. Looks like it should be usable @Frank - quick...

    Looks like it should be usable @Frank - quick compare is all I can do now … work calls.
  16. @Frank_B it does look interesting - certainly a...

    @Frank_B it does look interesting - certainly a great way to test the concept of alternate linking. I gave the Teensy_4 stuff a quick look - but didn't make the swap when it looked like it might not...
  17. Replies
    5
    Views
    505

    Sticky: Cool. Downloaded and installed.

    Cool. Downloaded and installed.
  18. Not shown is the hardware and interface to the...

    Not shown is the hardware and interface to the ADC and DAC at hand? How is the data presented to get 50M sample points each second? What is required of the clock?

    If speed is the issue a few...
  19. T_LC is way more than most Arduinos - and...

    T_LC is way more than most Arduinos - and thinking about failure to retrieve would have less to lose - which made me think having a buzzer to BEEP for locating if retrieval area offers any chance of...
  20. came across this link below the other day and...

    came across this link below the other day and posted on this thread : Possible-comparison-of-Teensy-s-and-Apollo-Moon-Landing-Computer

    The T_LC has about the same CPU [ M0 .vs. M0+ in T_LC ] and...
  21. Replies
    29
    Views
    2,091

    IDE 1.8.12 was forced out quickly without warning...

    IDE 1.8.12 was forced out quickly without warning after issues with 1.8.11 - by surprise and no usual warning. It seems Paul's on task with some hardware and such.

    He got this out in 4 hours on...
  22. @nicnut - posting the error text presented can...

    @nicnut - posting the error text presented can help a great deal - not seeing that in post #14 above didn't explain the problem or show there was one.

    With error text in #17 it might be possible...
  23. These two pin values match standard Teensy SPI so...

    These two pin values match standard Teensy SPI so start with them:


    Assuming it is write only there is likely no need for MISO pin.

    But for SPI bus there should be a CS pin to chip select that...
  24. Hi Frank - nice you got the important delivery ...

    Hi Frank - nice you got the important delivery

    Just looking and have not tried the FLASH only .ld. If the .ld file could be changed/selected at build time then alternate versions could go with...
  25. Indeed - I knew I saw FLASHMEM in cores, I didn't...

    Indeed - I knew I saw FLASHMEM in cores, I didn't stop to look how much.

    One extreme case would be alternate LD file that leaves ALL code on Flash unless FASTRUN - that would still use 32KB min -...
  26. Replies
    14
    Views
    480

    No Problem. > One thing to not do in that code...

    No Problem.

    > One thing to not do in that code is any change to the ARM_DWT_CTRL value - it is used by the T4 system to track micros()
    > T_LC doesn't have the ARM_DWT_CTRL
    > T4 has it running...
  27. Paul has selectively placed some init code in...

    Paul has selectively placed some init code in TEENSY4 tree into FLASHMEM … but that doesn't likely cover some fat things like printf() and other such libraries.
  28. @Frank - with the T4 getting more complete and a...

    @Frank - with the T4 getting more complete and a T_4.1 in the future this may be the time to tune the 'patch everything' things? I assume this refers to defs.h usage providing #define replacements?...
  29. @beermat - something extra affecting this code...

    @beermat - something extra affecting this code ???: libraries direct for devices or printf or other core function use bringing large bits of code into RAM1.

    No reason T4 isn't better on RAM -...
  30. Compile option for RAM_Size or something would be...

    Compile option for RAM_Size or something would be a good way to bypass that with only code in RAM being FASTRUN?
  31. First guess something in the sketch is trashing...

    First guess something in the sketch is trashing memory.

    Any dynamic allocations or arrays in use that might get overrun or pointers that might get a wrong value?
  32. In theory as noted - that is correct. Posted...

    In theory as noted - that is correct.

    Posted results a bit confusing? Minimal shrinkage from moving so much code.

    If FLASHMEM not provided for T_3.6 ( I haven't tried that ) then #ifdef...
  33. @beermat: that is correct. For background look...

    @beermat: that is correct.

    For background look over the Teensy4 info page with the memory layout details - linked in this thread IIRC or www. search for 'pjrc Teensy 4'

    Given that page of info...
  34. Replies
    14
    Views
    480

    Getting running/elapsed elapsedMillis or...

    Getting running/elapsed elapsedMillis or elapsedMicros is possible now with use of pjrc.com/teensy/td_timing_elaspedMillis.html



    void loop() { // each time loop() runs,
    ...
  35. Replies
    20
    Views
    3,197

    Plus in old style looks like clone names on...

    Plus in old style looks like clone names on Amazon? On sale at $299 for the latest 'DSLogic U3Pro16' { says 1 GHz sample rate for 3 channels} with upgraded shielded test wires and the higher sample...
  36. Replies
    14
    Views
    480

    No interrupt I've seen - just a simple running...

    No interrupt I've seen - just a simple running count of clock cycles.

    And there is no rollover to another value - that would be 'an exercise for the reader' as they say - as it depends on use. ...
  37. Replies
    27
    Views
    433

    Check out this file on your system :: "...YOUR...

    Check out this file on your system :: "...YOUR arduino..."\hardware\teensy\avr\libraries\ADC\index.html

    Open in browser and there is documentation that should hold answers.
  38. Replies
    14
    Views
    480

    Better to let it run - others may be using it -...

    Better to let it run - others may be using it - for instance it drives micros() on T_4

    It returns a uint32_t , and it tracked in a uint32_t rollover works naturally for tracking. Depending on how...
  39. Replies
    29
    Views
    2,091

    Library manager is for when needed libraries are...

    Library manager is for when needed libraries are not present by default on the machine.

    For Teensy/PJRC maintained or optimized libraries … like "anything_t3" or other that will be installed and...
  40. PJRC went with the smaller 1.4" Teensy size T_4.0...

    PJRC went with the smaller 1.4" Teensy size T_4.0 version to get a working board with the NXP 1062 processor.

    Like the T_3.6 that bought out needed on chip pins for Ethernet - indications on this...
  41. Replies
    29
    Views
    2,091

    TeensyDuino stores libraries it maintains in the...

    TeensyDuino stores libraries it maintains in the tree it installs and it works for there for Teensy builds. Best not to edit or move them.

    Anything in sketchbook\libraries is user controlled - if...
  42. Replies
    29
    Views
    2,091

    Same system/IDE/TD software versions here and...

    Same system/IDE/TD software versions here and open lib mgr no problem, even search to accellstepper display and click <more info> works.

    That error does not present. Likely issue with corruption...
  43. FrankB started a library and adding this from...

    FrankB started a library and adding this from above to "library.properties": dot_a_linkage=true

    Results in this - still shows checks of the *.o files - then shows using the '.a' file to build.

    ...
  44. There is a planned Teensy 4.1 that is indicated...

    There is a planned Teensy 4.1 that is indicated to be the 2.4" size of the T_3.6/3.5.

    There is a thread on that - See: pjrc.com/threads/58028-Pins-to-bring-out-on-a-hypothetical-larger-Teensy4
  45. Serial.begin() is extraneous and the value always...

    Serial.begin() is extraneous and the value always ignored on Teensy with native USB hardware.

    If Serial USB is part of the build - then it will come online as soon as the computer connects without...
  46. Just saw this ::...

    Just saw this :: Apollo-11-Computer-vs-USB-C-chargers.html



  47. You don't probably HAVE to - but it is a good...

    You don't probably HAVE to - but it is a good habit. There are rare occasions where PJRC pushes a new BOOTLOADER update to selective Teensy models over time and things change. So when unpacking a...
  48. PJRC ships new Teensy - and this one now Restored...

    PJRC ships new Teensy - and this one now Restored to New - with no active USB Serial code because it was the cause of grief to new users plugging them into older windows.

    That is why TeensyDuino...
  49. Yes, it gets that way - I saw it flash by...

    Yes, it gets that way - I saw it flash by yesterday. I think programming was interrupted and left with blank flash?

    Try the 15 second Restore again.

    Power and watching the red LED - press and...
  50. MAC should be fine if net throughput is under 15...

    MAC should be fine if net throughput is under 15 MB/sec and running high speed.

    Surprising if not running high_speed you can check that value in sketch it seems with :: extern "C" volatile uint8_t...
Results 1 to 50 of 500
Page 1 of 10 1 2 3 4