Visible state of digital input pins.

visible_pin.py

# SPDX-FileCopyrightText: Copyright (c) 2022 Randall Bohn (dexter)
#
# SPDX-License-Identifier: MIT
# A little fun in the Funhouse
import time
import board
import digitalio
import displayio
import vectorio
from adafruit_displayio_layout.layouts.grid_layout import GridLayout
from adafruit_displayio_layout.widgets.widget import Widget

purple=0x660099
blue=0x0000cc
white=0xcccccc
gray=0x666666

class Pin(Widget):
    "Display the state of the chosen (digital input) pin."
    def __init__(self, pin, color=0xFFFF99, **kwargs):
        super().__init__(**kwargs)
        self.pin = digitalio.DigitalInOut(pin)
        self.palette = displayio.Palette(1)
        self.palette[0] = color
        self.vc = vectorio.Circle(radius=18, x=20, y=20, pixel_shader=self.palette)
        self.append(self.vc)
    def resize(self, wtick, htick):
        self._width = wtick
        self._height = htick
        self.vc.x = wtick//2
        self.vc.y = int(htick*3//4)
    def update(self):
        if self.pin.value:
            place = self._height * 1//4
        else:
            place = self._height * 3//4
        self.vc.y = place

display = board.DISPLAY
splash = displayio.Group()
display.show(splash)

layout = GridLayout(0,0,display.width,display.height//2,
    grid_size=(3,1), divider_lines=True)
splash.append(layout)

layout.add_content(Pin(board.BUTTON_UP, purple), (0,0), (1,1))
layout.add_content(Pin(board.BUTTON_SELECT, blue), (1,0), (1,1))
layout.add_content(Pin(board.BUTTON_DOWN, white), (2,0), (1,1))

while True:
    for x in range(3):
        layout.get_cell((x,0)).update()