hallowing-st7735r-basic-demo.py

import time
import busio
import digitalio
import board

from adafruit_rgb_display import color565
import adafruit_rgb_display.st7735 as st7735

# Setup SPI bus using hardware SPI:
spi = busio.SPI(clock=board.SCK, MOSI=board.MOSI, MISO=board.MISO)

# Create the ST7735 display:
display = st7735.ST7735R(spi, cs=digitalio.DigitalInOut(board.TFT_CS),
    dc=digitalio.DigitalInOut(board.TFT_DC), rst=digitalio.DigitalInOut(board.TFT_RESET),
    height=128, width=128)

# Turn on the backlight:
tft_backlight = digitalio.DigitalInOut(board.TFT_BACKLIGHT)
tft_backlight.direction = digitalio.Direction.OUTPUT
tft_backlight.value = True

# Initialize the display
display.init()

# Main loop:
while True:
    # Clear the display
    display.fill(0)
    # Draw a red pixel in the center.
    display.pixel(64, 64, 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)