If you have issues running the example, you can always test your hardware by running a UF2 for your display from https://learn.adafruit.com/adafruit-qualia-esp32-s3-for-rgb666-displays/arduino-rainbow-demo
init_sequence_hd458 = bytes((
b'\xff\x05w\x01\x00\x00\x13'
b'\xef\x01\x08'
b'\xff\x05w\x01\x00\x00\x10'
b'\xc0\x02w\x00'
b'\xc1\x02\t\x08'
b'\xc2\x02\x01\x02'
b'\xc3\x01\x02'
b'\xcc\x01\x10'
b'\xb0\x10@\x14Y\x10\x12\x08\x03\t\x05\x1e\x05\x14\x10h3\x15'
b'\xb1\x10@\x08S\t\x11\t\x02\x07\t\x1a\x04\x12\x12d))'
b'\xff\x05w\x01\x00\x00\x11'
b'\xb0\x01m'
b'\xb1\x01\x1d'
b'\xb2\x01\x87'
b'\xb3\x01\x80'
b'\xb5\x01I'
b'\xb7\x01\x85'
b'\xb8\x01 '
b'\xc1\x01x'
b'\xc2\x01x'
b'\xd0\x01\x88'
b'\xe0\x03\x00\x00\x02'
b'\xe1\x0b\x02\x8c\x00\x00\x03\x8c\x00\x00\x0033'
b'\xe2\r3333\xc9<\x00\x00\xca<\x00\x00\x00'
b'\xe3\x04\x00\x0033'
b'\xe4\x02DD'
b'\xe5\x10\x05\xcd\x82\x82\x01\xc9\x82\x82\x07\xcf\x82\x82\x03\xcb\x82\x82'
b'\xe6\x04\x00\x0033'
b'\xe7\x02DD'
b'\xe8\x10\x06\xce\x82\x82\x02\xca\x82\x82\x08\xd0\x82\x82\x04\xcc\x82\x82'
b'\xeb\x07\x08\x01\xe4\xe4\x88\x00@'
b'\xec\x03\x00\x00\x00'
b'\xed\x10\xff\xf0\x07eO\xfc\xc2/\xf2,\xcf\xf4Vp\x0f\xff'
b'\xef\x06\x10\r\x04\x08?\x1f'
b'\xff\x05w\x01\x00\x00\x00'
b'\x11\x80x'
b'5\x01\x00'
b':\x81fd'
b')\x00'
))
tft_timings = {
"frequency": 16000000,
"width": 320,
"height": 960,
"overscan_left": 80,
"hsync_pulse_width": 10,
"hsync_front_porch": 30,
"hsync_back_porch": 50,
"hsync_idle_low": False,
"vsync_pulse_width": 2,
"vsync_front_porch": 15,
"vsync_back_porch": 17,
"vsync_idle_low": False,
"pclk_active_high": False,
"pclk_idle_high": False,
"de_idle_high": False,
}
from displayio import release_displays
release_displays()
import time
import random
import displayio
import busio
import board
import dotclockframebuffer
from framebufferio import FramebufferDisplay
tft_pins = dict(board.TFT_PINS)
tft_timings = {
"frequency": 16000000,
"width": 320,
"height": 960,
"overscan_left": 80,
"hsync_pulse_width": 10,
"hsync_front_porch": 30,
"hsync_back_porch": 50,
"hsync_idle_low": False,
"vsync_pulse_width": 2,
"vsync_front_porch": 15,
"vsync_back_porch": 17,
"vsync_idle_low": False,
"pclk_active_high": False,
"pclk_idle_high": False,
"de_idle_high": False,
}
init_sequence_hd458 = bytes((
b'\xff\x05w\x01\x00\x00\x13'
b'\xef\x01\x08'
b'\xff\x05w\x01\x00\x00\x10'
b'\xc0\x02w\x00'
b'\xc1\x02\t\x08'
b'\xc2\x02\x01\x02'
b'\xc3\x01\x02'
b'\xcc\x01\x10'
b'\xb0\x10@\x14Y\x10\x12\x08\x03\t\x05\x1e\x05\x14\x10h3\x15'
b'\xb1\x10@\x08S\t\x11\t\x02\x07\t\x1a\x04\x12\x12d))'
b'\xff\x05w\x01\x00\x00\x11'
b'\xb0\x01m'
b'\xb1\x01\x1d'
b'\xb2\x01\x87'
b'\xb3\x01\x80'
b'\xb5\x01I'
b'\xb7\x01\x85'
b'\xb8\x01 '
b'\xc1\x01x'
b'\xc2\x01x'
b'\xd0\x01\x88'
b'\xe0\x03\x00\x00\x02'
b'\xe1\x0b\x02\x8c\x00\x00\x03\x8c\x00\x00\x0033'
b'\xe2\r3333\xc9<\x00\x00\xca<\x00\x00\x00'
b'\xe3\x04\x00\x0033'
b'\xe4\x02DD'
b'\xe5\x10\x05\xcd\x82\x82\x01\xc9\x82\x82\x07\xcf\x82\x82\x03\xcb\x82\x82'
b'\xe6\x04\x00\x0033'
b'\xe7\x02DD'
b'\xe8\x10\x06\xce\x82\x82\x02\xca\x82\x82\x08\xd0\x82\x82\x04\xcc\x82\x82'
b'\xeb\x07\x08\x01\xe4\xe4\x88\x00@'
b'\xec\x03\x00\x00\x00'
b'\xed\x10\xff\xf0\x07eO\xfc\xc2/\xf2,\xcf\xf4Vp\x0f\xff'
b'\xef\x06\x10\r\x04\x08?\x1f'
b'\xff\x05w\x01\x00\x00\x00'
b'\x11\x80x'
b'5\x01\x00'
b':\x81fd'
b')\x00'
))
board.I2C().deinit()
i2c = busio.I2C(board.SCL, board.SDA)
tft_io_expander = dict(board.TFT_IO_EXPANDER)
#tft_io_expander['i2c_address'] = 0x38 # uncomment for rev B
dotclockframebuffer.ioexpander_send_init_sequence(i2c, init_sequence_hd458, **tft_io_expander)
i2c.deinit()
BAR_WIDTH = 256
BAR_HEIGHT = 64
bitmap = displayio.Bitmap(BAR_WIDTH, 7*BAR_HEIGHT, 65535)
fb = dotclockframebuffer.DotClockFramebuffer(**tft_pins, **tft_timings)
display = FramebufferDisplay(fb, auto_refresh=False)
# Create a TileGrid to hold the bitmap
tile_grid = displayio.TileGrid(bitmap, pixel_shader=displayio.ColorConverter(input_colorspace=displayio.Colorspace.RGB565))
# Create a Group to hold the TileGrid
group = displayio.Group()
# Add the TileGrid to the Group
group.append(tile_grid)
# Add the Group to the Display
display.root_group = group
display.auto_refresh = True
for i in range(BAR_WIDTH):
b = i >> 3
g = (i >> 2) << 5
r = b << 11
for j in range(BAR_HEIGHT):
bitmap[i, j] = b
bitmap[i, j+BAR_HEIGHT*1] = b|g
bitmap[i, j+BAR_HEIGHT*2] = g
bitmap[i, j+BAR_HEIGHT*3] = g|r
bitmap[i, j+BAR_HEIGHT*4] = r
bitmap[i, j+BAR_HEIGHT*5] = r|b
bitmap[i, j+BAR_HEIGHT*6] = r|g|b
# Loop forever so you can enjoy your image
while True:
time.sleep(1)
display.auto_refresh = False
group.x = random.randint(0, display.width - BAR_WIDTH)
group.y = random.randint(0, display.height - BAR_HEIGHT*7)
display.auto_refresh = True
Go ahead and save the example you your CircuitPython code.py and run the code. Your display should now look like this:
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