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Added IS31FL3741 DisplayIO Examples
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‎IS31FL3741_DisplayIO/scrolling_text/code.py‎

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# SPDX-FileCopyrightText: 2022 Mark Komus
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#
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# SPDX-License-Identifier: MIT
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import random
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import time
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import board
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import busio
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import displayio
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import framebufferio
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import is31fl3741
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from adafruit_is31fl3741.led_glasses_map import glassesmatrix_ledmap
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from adafruit_display_text import label
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from adafruit_bitmap_font import bitmap_font
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# List of possible messages to display.
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MESSAGES = (
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"DISPLAYIO AMAZES",
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"CIRCUITPYTHON RULES",
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"HELLO WORLD!",
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)
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TEXT_COLOR = (220, 210, 0) # Yellow
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# Remove any existing displays
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displayio.release_displays()
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# Initialize the LED Glasses
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#
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# In this example scale is set to True. When True the logical display is
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# three times the physical display size and scaled down to allow text to
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# look more natural for small display sizes. Hence the display is created
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# as 54x15 when the physical display is 18x5.
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#
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i2c = busio.I2C(board.SCL, board.SDA, frequency=1000000)
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is31 = is31fl3741.IS31FL3741(i2c=i2c)
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is31_framebuffer = is31fl3741.IS31FL3741_FrameBuffer(
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is31, 54, 15, glassesmatrix_ledmap, scale=True, gamma=True
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)
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display = framebufferio.FramebufferDisplay(is31_framebuffer, auto_refresh=True)
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# Dim the display. Full brightness is BRIGHT
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is31_framebuffer.brightness = 0.2
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# Load the font to be used - scrolly only has upper case letters
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font = bitmap_font.load_font("scrolly.bdf")
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# Set up the displayio elements
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text_area = label.Label(font, text="", color=TEXT_COLOR)
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text_area.y = 8
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group = displayio.Group()
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group.append(text_area)
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display.show(group)
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# Continue to scroll messages forever
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while True:
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# Pick a random message to display
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text_area.text = random.choice(MESSAGES)
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# Reset the text to start just off the right side
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x = display.width
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text_area.x = x
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# Determine the width of the message to scroll
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width = text_area.bounding_box[2]
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# Scroll the message across the glasses
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while x != -width:
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x = x - 1
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text_area.x = x
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time.sleep(0.05) # adjust to change scrolling speed

‎IS31FL3741_DisplayIO/sports_glasses/code.py‎

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# SPDX-FileCopyrightText: 2022 Mark Komus
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#
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# SPDX-License-Identifier: MIT
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import random
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import time
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import board
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import busio
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import digitalio
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import displayio
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import framebufferio
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import is31fl3741
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from adafruit_is31fl3741.is31fl3741_PixelBuf import IS31FL3741_PixelBuf
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from adafruit_is31fl3741.led_glasses_map import (
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glassesmatrix_ledmap_no_ring,
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left_ring_map_no_inner,
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right_ring_map_no_inner,
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)
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from adafruit_display_text import label
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from adafruit_bitmap_font import bitmap_font
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from adafruit_led_animation.animation.chase import Chase
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from adafruit_debouncer import Debouncer
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# List of possible messages to display. Randomly chosen
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MESSAGES = (
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"GO TEAM GO",
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"WE ARE NUMBER 1",
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"I LIKE THE HALFTIME SHOW",
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)
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# Colors used for the text and ring lights
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BLUE_TEXT = (0, 20, 255)
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BLUE_RING = (0, 10, 120)
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YELLOW_TEXT = (220, 210, 0)
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YELLOW_RING = (150, 140, 0)
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def ScrollMessage(text, color, repeat):
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"""Scroll a message across the eyeglasses a set number of times"""
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text_area.text = text
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text_area.color = color
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# Start the message just off the side of the glasses
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x = display.width
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text_area.x = x
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# Determine the width of the message to scroll
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width = text_area.bounding_box[2]
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for _ in range(repeat):
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while x != -width:
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x = x - 1
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text_area.x = x
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# Update the switch and if it has been pressed abort scrolling this message
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switch.update()
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if switch.value is False:
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return
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time.sleep(0.025) # adjust to change scrolling speed
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x = display.width
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def Score(text, color, ring_color, repeat):
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"""Show a scrolling text message and animated effects on the eye rings.
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The messages scrolls left to right, then right to left while the eye rings
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are animated using the adafruit_led_animation library."""
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# Set up a led animation chase sequence for both eyelights
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chase_left = Chase(left_eye, speed=0.11, color=ring_color, size=8, spacing=4)
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chase_right = Chase(right_eye, speed=0.07, color=ring_color, size=8, spacing=4)
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text_area.text = text
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text_area.color = color
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x = display.width
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text_area.x = x
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width = text_area.bounding_box[2]
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for _ in range(repeat):
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# Scroll the text left and animate the eyes
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while x != -width:
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x = x - 1
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text_area.x = x
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chase_left.animate()
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chase_right.animate()
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time.sleep(0.008) # adjust to change scrolling speed
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# Scroll the text right and animate the eyes
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while x != display.width:
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x = x + 1
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text_area.x = x
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chase_left.animate()
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chase_right.animate()
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time.sleep(0.008) # adjust to change scrolling speed
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# Remove any existing displays
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displayio.release_displays()
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# Set up the top button used to trigger a special message when pressed
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switch_pin = digitalio.DigitalInOut(board.SWITCH)
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switch_pin.direction = digitalio.Direction.INPUT
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switch_pin.pull = digitalio.Pull.UP
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switch = Debouncer(switch_pin)
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# Initialize the LED Glasses
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#
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# In this example scale is set to True. When True the logical display is
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# three times the physical display size and scaled down to allow text to
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# look more natural for small display sizes. Hence the display is created
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# as 54x15 when the physical display is 18x5.
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#
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i2c = busio.I2C(board.SCL, board.SDA, frequency=1000000)
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is31 = is31fl3741.IS31FL3741(i2c=i2c)
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is31_framebuffer = is31fl3741.IS31FL3741_FrameBuffer(
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is31, 54, 15, glassesmatrix_ledmap_no_ring, scale=True, gamma=True
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)
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display = framebufferio.FramebufferDisplay(is31_framebuffer, auto_refresh=True)
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# Set up the left and right eyelight rings
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# init is set to False as the IS31FL3741_FrameBuffer has already initialized the IS31FL3741 driver
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left_eye = IS31FL3741_PixelBuf(
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is31, left_ring_map_no_inner, init=False, auto_write=False
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)
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right_eye = IS31FL3741_PixelBuf(
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is31, right_ring_map_no_inner, init=False, auto_write=False
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)
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# Dim the display. Full brightness is BRIGHT
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is31_framebuffer.brightness = 0.2
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# Load the font to be used - scrolly only has upper case letters
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font = bitmap_font.load_font("scrolly.bdf")
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# Set up the display elements
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text_area = label.Label(font, text="", color=(0, 0, 0))
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text_area.y = 8
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group = displayio.Group()
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group.append(text_area)
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display.show(group)
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while True:
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# Run the debouncer code to get the updated switch value
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switch.update()
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# If the switch has been pressed interrupt start a special message
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if switch.value is False: # False means the switch has been pressed
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Score("SCORE!", YELLOW_TEXT, BLUE_RING, 2)
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# If the switch is not pressed pick a random message and scroll it
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left_eye.fill(BLUE_RING)
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right_eye.fill(BLUE_RING)
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left_eye.show()
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right_eye.show()
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ScrollMessage(random.choice(MESSAGES), YELLOW_TEXT, 2)

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