hack_tablet_touch_example.py

import time
import busio
import board
import adafruit_focaltouch
import displayio
import dotclockdisplay
import framebufferio
from rainbowio import colorwheel
import adafruit_imageload
import vectorio
import rainbowio

box_size = 50
corner_box_size = 20

displayio.release_displays()

SCL_pin = board.IO41  # set to a pin that you want to use for SCL
SDA_pin = board.IO42  # set to a pin that you want to use for SDA

IRQ_pin = board.IO40  # select a pin to connect to the display's interrupt pin ("IRQ")

i2c = busio.I2C(SCL_pin, SDA_pin)

ft = adafruit_focaltouch.Adafruit_FocalTouch(i2c, debug=False)

time.sleep(6)
print(f"ft.chip: {ft.chip}")

datapin_list = [
    board.IO3, board.IO4, board.IO5, board.IO6,
    board.IO7, board.IO8, board.IO9, board.IO10,
    board.IO11, board.IO12, board.IO13, board.IO14,
    board.IO15, board.IO16, board.IO17, board.IO18,
]

fb = dotclockdisplay.DotClockFramebuffer(
    width=800, height=480,
    hsync=board.IO47, vsync=board.IO48,
    de=board.IO45,
    pclock=board.IO21,
    data_pins=datapin_list,
    pclock_frequency=24 * 1000 * 1000,
    hsync_back_porch=100,  # 100
    hsync_front_porch=40,
    hsync_pulse_width=5,
    vsync_back_porch=25,
    vsync_front_porch=10,
    vsync_pulse_width=1,
    pclock_active_neg=1,
    bounce_buffer_size_px=1000 * 15,
)

print('Finished creating DotClockFrameBuffer.')

print('Creating DotClockFrameBuffer...')
display = framebufferio.FramebufferDisplay(fb)

main_group = displayio.Group()

bg_color = displayio.Palette(1)
bg_color[0] = 0xffffff
bg_rect = vectorio.Rectangle(pixel_shader=bg_color, width=display.width, height=display.height)
main_group.append(bg_rect)

#colors = [rainbowio.colorwheel(i) for i in range(0, 256, 256//5)]
colors = [0xff0000, 0xffff00, 0x00ff00, 0x00ffff, 0x0000ff, 0xff00ff]
# for color in colors:
#     print(hex(color))
palettes = []
touch_circles = []
touch_circle_groups = []
for i in range(6):

    _new_palette = displayio.Palette(1)
    _new_palette[0] = colors[i]
    palettes.append(_new_palette)

    touch_circles.append(vectorio.Circle(pixel_shader=_new_palette, radius=70, x=-100, y=-100))
    touch_circle_groups.append(displayio.Group())
    touch_circle_groups[-1].append(touch_circles[-1])
    main_group.append(touch_circle_groups[-1])
    #main_group.append(touch_circles[-1])



display.show(main_group)
# display.refresh(target_frames_per_second=60, minimum_frames_per_second=30)

#print("")
dont_hide_list = []
while True:

    if ft.touched:
        ts = ft.touches
        if ts != []:
            print(ts)
            for touch in ts:
                try:
                    touch_circle_groups[touch["id"]].hidden = False
                    touch_circles[touch["id"]].x = touch["x"]
                    touch_circles[touch["id"]].y = touch["y"]
                    dont_hide_list.append(touch["id"])
                except IndexError:
                    pass
                #print(ts)

    for i in range(6):
        if i not in dont_hide_list:
            touch_circle_groups[i].hidden = True

    while dont_hide_list:
        dont_hide_list.pop()
    # print(point)

    time.sleep(0.0001)