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

Search:

Type: Posts; User: sid8580

Search: Search took 0.00 seconds.

  1. Thanks. I've been down the road of I2C bus...

    Thanks. I've been down the road of I2C bus devices a few times now, mainly just curious as to how the speed and bit width disparity between the Teensy and a chip like this actually plays out. But...
  2. Port Expander compatibility - MCP23017 + Teensy 4.0

    It looks as if the MCP23017 is sold as a general purpose port expander for a wide range of 3.3v-5v platforms. Is there anything to be concerned about, if I use this with a T4.0?

    For example the...
  3. And... hello to another synth-oriented maker! :)

    And... hello to another synth-oriented maker! :)
  4. I'm not sure what the problem is here but...

    I'm not sure what the problem is here but generally I'd suggest checking out the Teensy enhanced I2C (Wire) library replacement, i2c_t3: https://github.com/nox771/i2c_t3

    It will also give you the...
  5. Replies
    21
    Views
    3,822

    Brendon, did you figure it out? I'd like to...

    Brendon, did you figure it out?
    I'd like to know if any of the extra info I posted was helpful or if it was something else, and to be honest I've got a few ST7735's I gave up on before moving to...
  6. Replies
    21
    Views
    3,822

    A quick glance of your function vs mine shows a...

    A quick glance of your function vs mine shows a number of differences, and also notice there is a section in mine I needed to change because by default the red and blue were swapped once I got it...
  7. Replies
    21
    Views
    3,822

    Try replacing SdFatSdio sd; with - SdFatSdioEX...

    Try replacing SdFatSdio sd; with -
    SdFatSdioEX SD;
    (beware that if you type that with a capital SD, you will have to change references to sd later in your code to SD, it's case sensitive)

    That...
  8. I found the information needed, here: ...

    I found the information needed, here:
    https://forum.pjrc.com/threads/40871...file-read-fail

    I had to modify the final code kindly provided by that thread's OP so it'd work with my ST7789 TFT,...
  9. Replies
    21
    Views
    3,822

    Thanks guys, even though it's going on 3 years...

    Thanks guys, even though it's going on 3 years old this information helped me solve my problems encountered with displaying bitmaps via SDfat library-driven SD card + ST7789 240x240 TFT display. I...
  10. Converting an example to SDfat from SD library

    I need to get this simple sketch to use the SDfat library instead of the default SD.

    If anyone can tell me what I'm doing wrong I'd greatly appreciate it. I've tried to cut it down to the bare...
  11. Ok - I've been including 2 screen libraries, even...

    Ok - I've been including 2 screen libraries, even though I am using a ST7789 240x240 1.3" display:
    #include<ST7735.h>
    #include<ST7789.h>

    This is because, in some earlier research I'd done to...
  12. This works, as in I can now load files from SD...

    This works, as in I can now load files from SD and display text and primitives onscreen. But to display a bitmap... still no go. But I left it on and after long enough it started displaying...
  13. If anyone's looked at this - apologies, came back...

    If anyone's looked at this - apologies, came back to it less frustrated to find there's more work I need to do to first before bringing it here - please disregard the code and let me narrow it down...
  14. Cannot display bitmaps, T3.6 w/ ST7789 w/ onboard SD

    Not sure why this is so difficult (spent 3 hours on it now) but I can't get a bitmap to display on my otherwise working T3.6 w/ 240x240 ST7789. I'll get "BMP format not recognized" no matter what...
  15. Generally speaking, how much of an impact does...

    Generally speaking, how much of an impact does the MCU speed have on graphics draw time?

    I would assume a lot of impact when going from an AVR platform to ARM, but is there a point beyond which...
  16. Exactly what I was looking for KurtE... will give...

    Exactly what I was looking for KurtE... will give these methods a shot. And, the pins are configured as shown in my code so looks like I'm optimal there, glad to have a better understanding.
    ...
  17. I got this working with an Adafruit-supplied 1.3"...

    I got this working with an Adafruit-supplied 1.3" TFT, ST7789, using the (very recently updated) ST7735_t3 library.

    A couple of things -
    1. Screen redraw seemed faster compared to the Adafruit...
  18. I verified my testbed T3.5 could drive the...

    I verified my testbed T3.5 could drive the earlier OLED I was using, the jumper wires were good, tried every ST7735 I had on hand, tried a multitude of pin combinations (including the example...
  19. Thanks guys for the responses, I'm attempting to...

    Thanks guys for the responses, I'm attempting to get up to speed with the thread pointed out by defragster; that may take me a minute :)

    I understand the value in buying components from a trusted...
  20. Even though this thread pertains to the ST7789, I...

    Even though this thread pertains to the ST7789, I also tried as much as I could follow here since that display driver is shared with the ST7735:...
  21. I've also made sure I select the correct...

    I've also made sure I select the correct initializer in the graphicstest.ino example each time... have also tried all the other options... basically every permutation I could come up with :)
  22. Problems with ST7735 160x80 0.96" SPI Display + Teensy 3.6

    Hi all - Haven't been able to get a generic ST7735 160x80 0.96" SPI Display working with a T3.6 (and now a T3.5 on a breadboard outside of my project).

    This is what it looks like (identical...
  23. A little more testing later and everything is...

    A little more testing later and everything is working great within the main code. Mixing up the libraries probably broke a couple of different methods Id tried.
  24. If you're interested in discussing it, what are...

    If you're interested in discussing it, what are the barriers to turning it into a product, that you consider insurmountable (at least without more effort than perhaps seems worth it)? Just curious...
  25. My barebones example seems to be writing/reading...

    My barebones example seems to be writing/reading files now, after re-aligning my library code around SDfat. There are 3 libraries I'd downloaded between the shuffle of example methods tried - the...
  26. This is the compiler error: Arduino: 1.8.7...

    This is the compiler error:

    Arduino: 1.8.7 (Mac OS X), TD: 1.44, Board: "Teensy 3.6, Serial + MIDI, 180 MHz, Faster, US English"

    SDcard_struct1: In function 'void saveProgram()':...
  27. Gerrit - First off, your project looks...

    Gerrit -
    First off, your project looks brilliant. Lovely aesthetic and useful ideas. I'd love to try it if I weren't on the other side of the world, and we may have more to talk about since the...
  28. One more thing... I'm really struggling with how...

    One more thing... I'm really struggling with how reference variables and pointers work. No amount of reading seems to make it click. Maybe that's part of my problem with this, I don't know.
    ...
  29. Teensy 3.6 SD card - saving/loading structs?

    Hello all, been at this problem for 3 days now and think it's finally time to ask for help -

    1. What is the simplest way to save a big struct (several variable types and enums, many variables in...
Results 1 to 29 of 30