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  1. Replies
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    OK. I was considering a diff board completely...

    OK. I was considering a diff board completely with the small 4.0 footprint. But as explained I understand.
    still searching for lockables @paulstoffregen
  2. A little too late lol. I took a look on the...

    A little too late lol. I took a look on the current ST8880 library we have, missing a few stuff I use in the GC9A01A that was modified. I had to adjust the gamma and such and it's looking/working...
  3. https://www.waveshare.com/wiki/2inch_LCD_Module ...

    https://www.waveshare.com/wiki/2inch_LCD_Module

    My problem was i was using the round LCD all this time and once I switched to the rectangular everything was flipped and the colours were off.
    The...
  4. On the 2" 240x320 LCD from waveshare that change...

    On the 2" 240x320 LCD from waveshare that change produced garbled image.
  5. That helped. I added this to your case structure...

    That helped. I added this to your case structure and it rotated it. Getting somewhere. There are some faint lines on the image but at least i'm on the right path. THanks!
    Oh, I also had to change...
  6. I found this online In the...

    I found this online


    In the Adafruit_SSD1306.h file look for the lines:

    #define SSD1306_COMSCANINC 0xC0
    #define SSD1306_COMSCANDEC 0xC8

    Change these lines to say:
  7. Yeah I'm searching for that, a flag to set or...

    Yeah I'm searching for that, a flag to set or something. Seems the uncanny eyes thing did a transposition.
  8. yeah flipped like a mirror, not rotated.

    yeah flipped like a mirror, not rotated.
  9. Does anyone know how I can flip/mirror an image? ...

    Does anyone know how I can flip/mirror an image?
    I wrote code for the round LCD and it worked fine, now the square LCD with same code is image mirrored.
    I'd rather just flip the image to fix it.
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    OK. It's good that we can backorder, but those...

    OK. It's good that we can backorder, but those lockable T4 were a dream come through :-)
    IS it that the T41 chip is more available than the T4? IF so can we have a T4.3 using the form factor of the...
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    Teensy 4.0 lockable at distributors?

    I missed the pre order for T4. Do distributors sell the T4 lockable versions?
  12. Oh. The diode voltage drop. Maybe the voltage req...

    Oh. The diode voltage drop. Maybe the voltage req was why it wasn't stable at 600 mhz but OK at 396?
  13. Thanks. Your help is appreciated. It's a newer...

    Thanks. Your help is appreciated.
    It's a newer t4 lockable.
    Since lowring the cpu frequency it has yet to freeze.
  14. Not pin 13 but the smaller debug led I have a...

    Not pin 13 but the smaller debug led

    I have a spi lcd connected.

    EDIT:

    yup, def not loving the 600MHZ.

    I'm going to add 22ohm resistor on the SPI lines at the teensy for the next circuit...
  15. The freeze happens either on USB, or EXT or on...

    The freeze happens either on USB, or EXT or on both.
    the power is isolated by cutting the line on the board and adding a diode.
    Noticed now that at 600Mhz it freezes, on 396 Mhz the freeze is yet...
  16. OK. So it's going into 2 blink mode by itself, no...

    OK. So it's going into 2 blink mode by itself, no program button
  17. Powered externally - there is a diode in the...

    Powered externally - there is a diode in the line.
    the sketch would be running for hours, or minutes, or seconds and then does it.
    It is likely to do it on USB cable removal.


    Project involves...
  18. T4.0 Hangs, Small LED flashes twice then Pauses...continuously doing that sequence

    T4.0 Hangs, Small LED flashes twice then Pauses...continuously doing that sequence.

    Is this something that is know, is this an error code of some sort?
  19. What do they use to convert the font? I want to...

    What do they use to convert the font? I want to do BankGothic font
  20. Is this wired correctly? Can't get anything on...

    Is this wired correctly? Can't get anything on screen.
    28848

    VCC -> +5v
    GND ->GND
    DIN -> Pin 11
    CLK -> Pin 13
    CS -> Pin 10
    DC -> pin 9
    RST-> Pin 8
  21. Replies
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    IS there anyone who'd like to work with me on...

    IS there anyone who'd like to work with me on this? I'd send an LCD to your address (USA only)
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    Still no luck.

    Still no luck.
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    Tried nothing changed OK I'll explore this...

    Tried nothing changed



    OK I'll explore this a little later, as i got it working with the arduino nano. So the library is good. But something is up with Teensy library I think.
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    Trying a T3.2 and it won't link. Error...

    Trying a T3.2 and it won't link.



    Error linking for board Teensy 3.2 / 3.1
    libc.a(lib_a-writer.o)*: In function _write_r
    writer.c*: (.text._write_r+0x12): undefined reference to _write
    ...
  25. Replies
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    Just tried an arduino nano and it worked. So...

    Just tried an arduino nano and it worked.
    So something up with what i'm doing with T4.

    I took a new T4 out the box and same non result.
  26. Replies
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    nothing just backlight, same as i initially set...

    nothing just backlight, same as i initially set it up.
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    Backlight is responding to above code, if i...

    Backlight is responding to above code, if i change the value lower it gets dimmer.



    analogWriteResolution(10);
    Config_Init();
    LCD_Init();
    LCD_SetBacklight(1000);

    how it is now
  28. Replies
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    OK. I cycled through all 4 modes just now. Still...

    OK. I cycled through all 4 modes just now. Still nothing.
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    OPERATING VOLTAGE:3.3V / 5V DISPLAY PANEL: IPS....

    OPERATING VOLTAGE:3.3V / 5V
    DISPLAY PANEL: IPS. PIXEL SIZE: 0.135 0.135mm; DRIVER: GC9A01

    power n GND are hooked up correctly. The USB port is to the left of the photo. White>gnd and...
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    https://www.waveshare.com/w/upload/f/fc/LCD_Module...

    https://www.waveshare.com/w/upload/f/fc/LCD_Module_code.zip

    I'm running the arduino sample inside this zip. Untouched.

    And I have it wired up:
    28627

    VCC and GDN as expected
    DIN going to...
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    Yes, how I've been testing it. The screen just...

    Yes, how I've been testing it. The screen just blank.
  32. Replies
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    Cpnnecting SPI LCD screen to T4

    Hello, I'm trying to find the right pins on the T4 for each of these SPI connections on this LCD

    2862428625
    28626

    DIN=MOSI/11?
    CLK=13?
    CS=10?
    DC=?
  33. automatic reboot using teensy loader cli

    Just a quick question,

    I realized that using the teensy loader cli I have to press the restart button on the T41.

    However, when I'm using the arduino to upload (via teensy.exe) it doesn't...
  34. Wow, didn't realize it has been so long!...

    Wow, didn't realize it has been so long! Congrats! And thanks you!
  35. OK. I was thinking of leaving the safety checks...

    OK. I was thinking of leaving the safety checks in place with the LED blinking to indicate failure,
    if failure then the rest of code (locking) would be ignored?

    I'm too scared to even write this...
  36. teensy security sketch... merging into 1 sketch possible?

    I've used the teensy security menu in arduino to write the sketch in the order they appear, successfully.
    I have those hex files (fuse sketch and lock sketch bin files) that i write to the teensy.
    ...
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    please see latest sketch.

    please see latest sketch.
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    Please understand that the code was hurried...

    Please understand that the code was hurried trying a bunch of things to reproduce the problem. From the actual interrupt to testing the eeprom saving a file size about the same size as the data I use...
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    https://drive.google.com/file/d/1n-GAqZkL-hIhulry9...

    https://drive.google.com/file/d/1n-GAqZkL-hIhulry9dz1vwhNu2g_OcsB/view?usp=sharing
    google drive, let me know if still have problems.

    Also, can compile the code blocks I posted above.
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    I did that, it's by the mediafire link. I have...

    I did that, it's by the mediafire link. I have adblocker and the link is no problem to get to. I had problems uploading the zip on your forum. If that's too much to do, then it's ok.
    defragster...
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    Obviously something is different if the same code...

    Obviously something is different if the same code works on T3 but doesn't on T4...
    Why are you sounding so hostile? Thought you'd be happy someone found what could be a bug, but I'm just hoping it's...
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    Only comms I'm using is the Serial class from...

    Only comms I'm using is the Serial class from arduino library.
    Is UART the tech that involves the hardware serial? Using the pins to communicate with another device? If so, no I'm using the USB...
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    Paul, defragster, thank you for responding. It's...

    Paul, defragster, thank you for responding. It's difficult to post code sometimes based on what exactly it is I'm working on and where the problem is. I understand it's easier to say "there, there is...
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    thanks. Teensy 1.56 USB port on the teensy via...

    thanks. Teensy 1.56

    USB port on the teensy via usb cable to PC
    using Serial.Print/Readuntil

    I can reproduce it with simple sketch. Give me some time...

    ... and I found the problem while...
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    Teensy 4 serial issues

    Hello,

    I've noticed something that I can't seem to find my way around.

    On my teensy 3.5 and 3.2, I have code that is written for serial comm. between teensy and windows (bidrectional).
    Those...
  46. Ok. That explains it. I got away with using opamp...

    Ok. That explains it. I got away with using opamp on the 4.1 Analog input (mono)
    But the stereo I see won't work.
    I guess that means the the external audio i2s Adc will be needed.
  47. ADCS not working on 4.1 - What am i doing wrong?

    If i change this to the mono audio design scheme, it works, sound is passed to the USB
    However, using this in stereo doesn't work on the 4.1

    This same code works on the 3.5



    #include...
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    Ahh. This must be it! Thanks for your time (and...

    Ahh. This must be it!
    Thanks for your time (and patience)
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    280252802628029 I basically ported the code...

    280252802628029

    I basically ported the code from the old project where i used analog input instead of this i2s chip.


    /**********************************SINGLE...
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    Not sure what Im doing wrong, here is my...

    Not sure what Im doing wrong, here is my schematic.

    28023
    and this is the audio routing/ design

    // GUItool: begin automatically generated code
    AudioInputI2S2 i2s2_1; ...
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