A simple 800x600 60Hz VGA display driver to use with Pico2 and Micropython, 3 bits per color -> 8 colors
Hello All,
This is an upgrade of my previous VGA micropython display library, using the pico2 allows to use a VGA screen with a 800x600 resolution and 3 bits per pixel (8 colors). This library uses 3 PIO statemachines and 2 DMA channels A full framebuffer and a font, once loaded in memory, will leave approx 270k of available memory to do stuff and use a VGA monitor directly connected to the PICO
Other improvements are:
- Use of the DMA included library available in the standard micropython instead of direct registry modification used in my previous code
- Changed the font system to use xglcd fonts (from rdagger library)
- Added a plotting library to make real time plotting more easy
I tried to document the code as much as I could. I have no doubt that this can be optimized quite a lot. If any of you is interested in using or improving it, i'll be happy to provide further explanations.
Pinout for the Pico2 <-> VGA:
Red is on GPIO18 -> using 220 ohm resistor
Green is on GPIO19 -> using 220 ohm resistor
Blue is on GPIO20 -> using 220 ohm resistor
Hsync signal is on GPIO22 -> using 47 ohm resistor
Vsync signal is on GPIO21 -> using 47 ohm resistor
