adafruit-circuitpython-rgb-display

Introduction

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Port of display drivers from https://github.com/adafruit/micropython-adafruit-rgb-display to Adafruit CircuitPython for use on Adafruit's SAMD21-based and other CircuitPython boards.

.. note:: This driver currently won't work on micropython.org firmware, instead you want the micropython-adafruit-rgb-display driver linked above!

This CircuitPython driver currently supports displays that use the following display-driver chips: HX8353, HX8357, ILI9341, S6D02A1, ST7789, SSD1331, SSD1351, and ST7735 (including variants ST7735R and ST7735S).

Dependencies

This driver depends on:

• Adafruit CircuitPython <https://github.com/adafruit/circuitpython>_
• Bus Device <https://github.com/adafruit/Adafruit_CircuitPython_BusDevice>_

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle <https://github.com/adafruit/Adafruit_CircuitPython_Bundle>_.

For the Pillow Examples, you will need to be running CPython. This means using a Single Board Computer such as a Raspberry Pi or using a chip such as an FT232H on Linux, Window, or Mac. CircuitPython does not support PIL/pillow (python imaging library)!

For improved performance consider installing NumPy.

Installing from PyPI

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI <https://pypi.org/project/adafruit-circuitpython-rgb-display/>_. To install for current user:

.. code-block:: shell

pip3 install adafruit-circuitpython-rgb-display

To install system-wide (this may be required in some cases):

.. code-block:: shell

sudo pip3 install adafruit-circuitpython-rgb-display

To install in a virtual environment in your current project:

.. code-block:: shell

mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-rgb-display

Usage Example

2.2", 2.4", 2.8", 3.2" TFT

.. code-block:: python

import time import busio import digitalio from board import SCK, MOSI, MISO, D2, D3

from adafruit_rgb_display import color565 import adafruit_rgb_display.ili9341 as ili9341

Configuration for CS and DC pins:

CS_PIN = D2 DC_PIN = D3

Setup SPI bus using hardware SPI:

spi = busio.SPI(clock=SCK, MOSI=MOSI, MISO=MISO)

Create the ILI9341 display:

display = ili9341.ILI9341(spi, cs=digitalio.DigitalInOut(CS_PIN), dc=digitalio.DigitalInOut(DC_PIN))

Main loop:

while True: # Clear the display display.fill(0) # Draw a red pixel in the center. display.pixel(120, 160, color565(255, 0, 0)) # Pause 2 seconds. time.sleep(2) # Clear the screen blue. display.fill(color565(0, 0, 255)) # Pause 2 seconds. time.sleep(2)

1.14" TFT with Raspbery Pi 4

With 1.14" wiring <https://learn.adafruit.com/adafruit-1-14-240x135-color-tft-breakout/python-wiring-and-setup>_, here is the working code:

.. code-block:: python

import time import busio import digitalio from board import SCK, MOSI, MISO, CE0, D24, D25

from adafruit_rgb_display import color565 from adafruit_rgb_display.st7789 import ST7789

Configuration for CS and DC pins:

CS_PIN = CE0 DC_PIN = D25 RESET_PIN = D24 BAUDRATE = 24000000

Setup SPI bus using hardware SPI:

spi = busio.SPI(clock=SCK, MOSI=MOSI, MISO=MISO)

Create the ST7789 display:

display = ST7789( spi, rotation=90, width=135, height=240, x_offset=53, y_offset=40, baudrate=BAUDRATE, cs=digitalio.DigitalInOut(CS_PIN), dc=digitalio.DigitalInOut(DC_PIN), rst=digitalio.DigitalInOut(RESET_PIN))

Main loop: same as above

while True: # Clear the display display.fill(0) # Draw a red pixel in the center. display.pixel(120, 160, color565(255, 0, 0)) # Pause 2 seconds. time.sleep(2) # Clear the screen blue. display.fill(color565(0, 0, 255)) # Pause 2 seconds. time.sleep(2)

Documentation

API documentation for this library can be found on Read the Docs <https://docs.circuitpython.org/projects/rgb_display/en/latest/>_.

For information on building library documentation, please check out this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>_.

Contributing

Contributions are welcome! Please read our Code of Conduct <https://github.com/adafruit/Adafruit_CircuitPython_RGB_Display/blob/main/CODE_OF_CONDUCT.md>_ before contributing to help this project stay welcoming.