显示

一、显示一个像素点

import board
import displayio
import busio
display = board.DISPLAY
splash = displayio.Group(max_size=2)
display.show(splash)
bitmap = displayio.Bitmap(30, 30, 1)
palette = displayio.Palette(2)
palette[0] = 0x000000
palette[1] = 0xffffff
tile_grid = displayio.TileGrid(bitmap, pixel_shader=palette)
group = displayio.Group()
group.append(tile_grid)
display.show(group)
bitmap[20, 20] = 1

二、显示一个bmp图片

三、显示文本文字

import board
import displayio
from adafruit_bitmap_font import bitmap_font
from adafruit_display_text import label
display = board.DISPLAY
text = "HELLO WORLD"
font = bitmap_font.load_font("fonts/Helvetica-Bold-16.bdf")
color = 0x0000FF
text_area = label.Label(font, text=text, color=color)
# Set the location
#text_area.x = 80
#text_area.y = 60
# Set in center 80=160/2 60=120/2
text_area.anchor_point = (0.5, 0.5)
text_area.anchored_position = (80, 60)
display.show(text_area)
while True:
    pass