pico-ssd1306

Simple library for using ssd1306 displays with the Raspberry Pi Pico and the pico-sdk.

Usage

• copy font.h, ssd1306.c and ssd1306.h to your project
• see example

Documentation

• online documentation
• see ssd1306.h and example

Example

• set PICO_SDK_PATH
• goto example
• mkdir build && cd build && cmake .. && make
• copy the ssd1306-example.uf2 to your Pico

Draw Images

The library can draw monochrome bitmaps using the functions ssd1306_bmp_show_image and ssd1306_bmp_show_image_with_offset.

For converting an image to the supported format, you can do the following:

• install ImageMagick
• use convert you_image.png -monochrome your_image.bmp

For embedding your image, you can use tools like bin2c (included in the hxtools package on Debian).

Alternatively, you can you the version included in this repo:

• go in the tools/ directory
• make
• usage: ./bin2c your_image.bmp your_image.h

You may also take a look at the example in the example/ directory.

Fonts

You can also use or own fonts when drawing with ssd1306_draw_char_with_font or ssd1306_draw_string_with_font. The format is:

1. a 1-D uint8_t array
2. structure of the array:
   1. the first element of the array is the height
   2. the second element of the array is the height
   3. the third element of the array is the additional spacing between chars
   4. the fourth element of the array is the the first ascii character, this array stores
   5. the fifth element of the array is the the last ascii character, this array stores
   6. the following elements encode the pixels of the characters vertically line by line (see); a line can be encoded as more than one uint8_t values, when the height is greater than 8; please look at font.h and the fonts in the example/ directory