I am trying to get the TFT demo to working in MicroPython, all I got is a blank screen. (I've installed MicroPython and mounted CIRCUITPY correctly and was able to get other demos to work. I am only having issues with the TFT)
I have these libraries under the /lib
adafruit_display_text/
adafruit_bitmap_front/
adafruit_st7789.mpy
Can anyone provide some insights?
Code: Select all
# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT
"""
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 terminalio
import displayio
import digitalio
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.TFT_CS
tft_dc = board.TFT_DC
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()
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(
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
https://learn.adafruit.com/adafruit-1-1 ... quickstart
I modified the PINs as follow for this board:
Code: Select all
tft_cs = board.TFT_CS
tft_dc = board.TFT_DC