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Added 1.14-inch TFT example #12

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60 changes: 60 additions & 0 deletions examples/st7789_240x135_simpletest.py
Original file line number Diff line number Diff line change
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"""
This test will initialize the display using displayio and draw a solid green
background, a smaller purple rectangle, and some yellow text.
"""
import board
import displayio
import terminalio
from adafruit_display_text import label
from adafruit_st7789 import ST7789

# First set some parameters used for shapes and text
BORDER = 20
FONTSCALE = 2
BACKGROUND_COLOR = 0x00FF00 # Bright Green
FOREGROUND_COLOR = 0xAA0088 # Purple
TEXT_COLOR = 0xFFFF00

# Release any resources currently in use for the displays
displayio.release_displays()

spi = board.SPI()
tft_cs = board.D5
tft_dc = board.D6

display_bus = displayio.FourWire(spi, command=tft_dc, chip_select=tft_cs)
display = ST7789(display_bus, rotation=270, width=240, height=135, rowstart=40, colstart=53)

# Make the display context
splash = displayio.Group(max_size=10)
display.show(splash)

color_bitmap = displayio.Bitmap(display.width, display.height, 1)
color_palette = displayio.Palette(1)
color_palette[0] = BACKGROUND_COLOR

bg_sprite = displayio.TileGrid(color_bitmap,
pixel_shader=color_palette,
x=0, y=0)
splash.append(bg_sprite)

# Draw a smaller inner rectangle
inner_bitmap = displayio.Bitmap(display.width - BORDER * 2, display.height - BORDER * 2, 1)
inner_palette = displayio.Palette(1)
inner_palette[0] = FOREGROUND_COLOR
inner_sprite = displayio.TileGrid(inner_bitmap,
pixel_shader=inner_palette,
x=BORDER, y=BORDER)
splash.append(inner_sprite)

# Draw a label
text = "Hello World!"
text_area = label.Label(terminalio.FONT, text=text, color=TEXT_COLOR)
text_width = text_area.bounding_box[2] * FONTSCALE
text_group = displayio.Group(max_size=10, scale=FONTSCALE, x=display.width // 2 - text_width // 2,
y=display.height // 2)
text_group.append(text_area) # Subgroup for text scaling
splash.append(text_group)

while True:
pass