Status

Works. (On Teensy only !?)

This was 3 days of brainfuug, feel free motivating me publishing such stuff.

See my notes and theory docs for more detail on it's inner workings

Usage

Within PlatformIO

You can either...

• clone this repo into yout lib folder
• same but as submodule git submodule add <repo addr> lib/VFD_MN12832L
• add repo to platformio.ini lib_deps = mariosgit/VFD_MN12832L

Branch "greyscales" has a version with 4 greyscales. This requires more memory and twice the CPU time.

Arduino

?? copy the repo into your local libraries folder ??

Example

see examples folder.

instanciate a display

MN12832L display;

or with your own pins... (MOSI and SCK must fit one of the hardware SPI pins)

MN12832L display(
    /* pinBLK = */ 4,
    /* pinLAT = */ 6,
    /* pinGCP = */ 3,
    /* MOSI_PIN = */ 11,
    /* SCK_PIN = */ 13,
    /* pinPWM = */ 20);

Call begin during setup...

void setup()
{
    display.begin();
    display.fillScreen(0);
}

Draw something and swap buffers...

void loop()
{
    display.fillScreen(0);
    display.drawLine(0,0,31,31,1);
    display.swapBuffers();
}

Todo

Optimize some more drawing functions..

HLine and fillRect could be faster when 6 pixel are written at once.

  virtual void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);
  virtual void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color);
  virtual void fillRect(int16_t x, int16_t y, int16_t w, int16_t h,
                        uint16_t color);
  virtual void fillScreen(uint16_t color);
  // Optional and probably not necessary to change
  virtual void drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1,
                        uint16_t color);
  virtual void drawRect(int16_t x, int16_t y, int16_t w, int16_t h,
                        uint16_t color);