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sumotoy / SSD_13XX

A very fast and full featured driver for SSD1331/22/32/51 Oled's compatible with Teensy's and many other MCU's
GNU General Public License v3.0
156 stars 38 forks source link

How to draw custom images #30

Open lorhof1 opened 3 years ago

lorhof1 commented 3 years ago

Hello, I didn't find any guide on how to draw own images. How can I do this? Sorry if I'm missing something.

stylesuxx commented 3 years ago

What do you mean by own images? You have an image file that you want to be drawn, or you want to draw from scratch? In any way, I would recommend taking a look at the examples dir, that should help you out.

lorhof1 commented 3 years ago

i want to draw an image to the display, i saw your images are in a format that is an array of the pixel colors. how can i convert a png to this format?

stylesuxx commented 3 years ago

I am not the maintainer of this lib, but you can check the file - the header tells you everything you need to know https://github.com/sumotoy/SSD_13XX/blob/master/_images/eye/eye93.c

* preset name: Color R5G6B5
* data block size: 16 bit(s), uint16_t
* RLE compression enabled: no
* conversion type: Color, not_used not_used
* bits per pixel: 16
*
* preprocess:
*  main scan direction: top_to_bottom
*  line scan direction: forward
*  inverse: no

Results in 16 bits per pixel. It is drawn line after line - so if you have an image with the size of 20x10 pixels, it will result in 200pixels resulting in 3200 bits.

I like to use a python PIL script to convert images to other image formats - but how you implement this is up to you.

lorhof1 commented 3 years ago

Where can i get this LCD-Image-converter and how do i set it up?