Micropython library for simple graphic primitives on ST7920 128x64 monochrome LCD panel using ESP8266 and SPI
Can initialise a screen and framebuffer with...
import st7920 screen = st7920.Screen()
Can draw points, lines and rectangles to a framebuffer with e.g.
screen.plot(10, 10) screen.line(10, 10, 20, 20) screen.rect(25, 25, 50, 50) screen.fill_rect(5, 5, 95, 95)
Can draw inverse with e.g.
screen.plot(10, 10, False) screen.line(10, 10, 20, 20, False) screen.rect(25, 25, 50, 50, False) screen.fill_rect(5, 5, 95, 95, False)
Then send finished 1kbyte frame to the screen at 1.8Mbaud with...
Finally clear again with...
Install ampy by running...
pip install adafruit-ampy
Then change to this directory and upload files...
ampy --port /dev/ttyUSB0 put st7920.py ampy --port /dev/ttyUSB0 put example.py
You should then be able to interactively run the following from the REPL...
import example example.run
Alternatively upload the main.py file as well as follows...
ampy --port /dev/ttyUSB0 put main.py
...and the example will automatically run on boot
See also @ShrimpingIt's bitfont project for pixel typography logic which can be used with micropython-st7920 and other bit-rendering environments.
Developed by @cefn of @ShrimpingIt based on @JMW95's incredibly useful reference Raspberry Pi python SPI port at https://github.com/JMW95/pyST7920, funded by the Milecastles project
Consider use of Micropython's framebuf Framebuffer library to see if it offers any acceleration, or just for conformance with other libraries - draw primitives look like they are the same.