Fun With TFT Bar Display

tl032.py

# use the TL032FWV01 320x820 Bar Display
init_sequence_tl032 = bytes((
    b'\x11\x80d'
    b'\xff\x05w\x01\x00\x00\x13'
    b'\xef\x01\x08'
    b'\xff\x05w\x01\x00\x00\x10'
    b'\xc0\x02\xe5\x02'
    b'\xc1\x02\x0c\n'
    b'\xc2\x02\x07\x0f'
    b'\xc3\x01\x02'
    b'\xcc\x01\x10'
    b'\xcd\x01\x08'
    b'\xb0\x10\x00\x08Q\r\xce\x06\x00\x08\x08\x1d\x02\xd0\x0fo6?'
    b'\xb1\x10\x00\x10O\x0c\x11\x05\x00\x07\x07\x1f\x05\xd3\x11n4?'
    b'\xff\x05w\x01\x00\x00\x11'
    b'\xb0\x01M'
    b'\xb1\x01\x1c'
    b'\xb2\x01\x87'
    b'\xb3\x01\x80'
    b'\xb5\x01G'
    b'\xb7\x01\x85'
    b'\xb8\x01!'
    b'\xb9\x01\x10'
    b'\xc1\x01x'
    b'\xc2\x01x'
    b'\xd0\x81\x88d'
    b'\xe0\x03\x80\x00\x02'
    b'\xe1\x0b\x04\xa0\x00\x00\x05\xa0\x00\x00\x00``'
    b'\xe2\r00``<\xa0\x00\x00=\xa0\x00\x00\x00'
    b'\xe3\x04\x00\x0033'
    b'\xe4\x02DD'
    b'\xe5\x10\x06>\xa0\xa0\x08@\xa0\xa0\nB\xa0\xa0\x0cD\xa0\xa0'
    b'\xe6\x04\x00\x0033'
    b'\xe7\x02DD'
    b'\xe8\x10\x07?\xa0\xa0\tA\xa0\xa0\x0bC\xa0\xa0\rE\xa0\xa0'
    b'\xeb\x07\x00\x01NN\xeeD\x00'
    b"\xed\x10\xff\xff\x04Vr\xff\xff\xff\xff\xff\xff'e@\xff\xff"
    b'\xef\x06\x10\r\x04\x08?\x1f'
    b'\xff\x05w\x01\x00\x00\x13'
    b'\xe8\x02\x00\x0e'
    b'\xff\x05w\x01\x00\x00\x00'
    b'\x11\x80x'
    b'\xff\x05w\x01\x00\x00\x13'
    b'\xe8\x82\x00\x0c\n'
    b'\xe8\x02\x00\x00'
    b'\xff\x05w\x01\x00\x00\x00'
    b'6\x01\x00'
    b':\x01f'
    b'\x11\x80x'
    b')\x80x'
))
tft_timings = {
    "frequency": 16_000_000,
    "width": 320,
    "height": 820,

    "hsync_pulse_width": 3,
    "hsync_back_porch": 251,
    "hsync_front_porch": 150,
    "hsync_idle_low": False,

    "vsync_pulse_width": 6,
    "vsync_back_porch": 90,
    "vsync_front_porch": 100,
    "vsync_idle_low": False,

    "pclk_active_high": False,
    "pclk_idle_high": False,
    "de_idle_high": False,
}
import displayio
displayio.release_displays()
import board
import busio
import dotclockframebuffer
from framebufferio import FramebufferDisplay

def get_display():
    board.I2C().deinit()
    i2c = busio.I2C(board.SCL, board.SDA, frequency=400_000)
    dotclockframebuffer.ioexpander_send_init_sequence(
        i2c, init_sequence_tl032, **(dict(board.TFT_IO_EXPANDER)))
    i2c.deinit()

    fb = dotclockframebuffer.DotClockFramebuffer(
        **(dict(board.TFT_PINS)),
        **tft_timings)
    display = FramebufferDisplay(fb, auto_refresh=True)
    return display

display = get_display()

touch_demo.py

import board
from tl032 import display
from adafruit_display_text.label import Label
from terminalio import FONT
from adafruit_bitmap_font.bitmap_font import load_font
from adafruit_focaltouch import Adafruit_FocalTouch
import displayio
import time

display.rotation=90
group = displayio.Group()
lora32 = load_font("/fonts/Lora-32.pcf")
fawes42 = load_font("/fonts/forkawesome-42.pcf")
label = Label(lora32, text="320x820 Bar Display", color=(44,240,44),
    anchor_point=(0.5, 0.5),
    anchored_position=(display.width//2, display.height*3//4))
group.append(label)

debug = Label(fawes42, text="debug", color=(240,44,128),
    anchor_point=(0.0,0.5),
    anchored_position=(20, 32))
group.append(debug)
focal = Adafruit_FocalTouch(board.I2C(), debug=False)
display.root_group=group


while True:
    t = focal.touched
    if t > 0:
        debug.text="\uF1B0"*t
    else:
        debug.text="\uF069"
    time.sleep(0.2)