1  # Basic example of drawing an image
 2  # This example and library is meant to work with Adafruit CircuitPython API.
 3  #
 4  # This example is for use on (Linux) computers that are using CPython with
 5  # Adafruit Blinka to support CircuitPython libraries. CircuitPython does
 6  # not support PIL/pillow (python imaging library)!
 7  #
 8  # Author: Melissa LeBlanc-Williams
 9  # License: Public Domain
10  
11  # Import all board pins.
12  import board
13  import busio
14  from PIL import Image
15  
16  # Import the HT16K33 LED matrix module.
17  from adafruit_ht16k33 import matrix
18  
19  # Create the I2C interface.
20  i2c = busio.I2C(board.SCL, board.SDA)
21  
22  # Create the matrix class.
23  # This creates a 16x8 matrix:
24  mtrx = matrix.Matrix16x8(i2c)
25  # Or this creates a 16x8 matrix backpack:
26  # mtrx = matrix.MatrixBackpack16x8(i2c)
27  # Or this creates a 8x8 matrix:
28  # mtrx = matrix.Matrix8x8(i2c)
29  # Or this creates a 8x8 bicolor matrix:
30  # mtrx = matrix.Matrix8x8x2(i2c)
31  # Finally you can optionally specify a custom I2C address of the HT16k33 like:
32  # mtrx = matrix.Matrix16x8(i2c, address=0x70)
33  
34  if isinstance(mtrx, matrix.Matrix8x8x2):
35      image = Image.open("squares-color.png")
36  elif isinstance(mtrx, matrix.Matrix16x8):
37      image = Image.open("squares-mono-16x8.png")
38  else:
39      image = Image.open("squares-mono-8x8.png")
40  
41  # Clear the matrix
42  mtrx.fill(0)
43  mtrx.image(image)