115 lines
3.1 KiB
Python
Executable file
115 lines
3.1 KiB
Python
Executable file
# SPDX-FileCopyrightText: 2020 Brent Rubell for Adafruit Industries
|
|
#
|
|
# SPDX-License-Identifier: MIT
|
|
|
|
import time
|
|
from random import randrange
|
|
import board
|
|
import terminalio
|
|
from adafruit_matrixportal.matrixportal import MatrixPortal
|
|
|
|
# --- Data Setup --- #
|
|
# Number of guides to fetch and display from the Adafruit Learning System
|
|
DISPLAY_NUM_GUIDES = 5
|
|
# Data source URL
|
|
DATA_SOURCE = (
|
|
"https://learn.adafruit.com/api/guides/new.json?count=%d" % DISPLAY_NUM_GUIDES
|
|
)
|
|
TITLE_DATA_LOCATION = ["guides"]
|
|
|
|
matrixportal = MatrixPortal(
|
|
url=DATA_SOURCE,
|
|
json_path=TITLE_DATA_LOCATION,
|
|
status_neopixel=board.NEOPIXEL,
|
|
)
|
|
|
|
# --- Display Setup --- #
|
|
|
|
# Colors for guide name
|
|
colors = [0xFFA500, 0xFFFF00, 0x008000, 0x0000FF, 0x4B0082, 0xEE82EE]
|
|
|
|
# Delay for scrolling the text
|
|
SCROLL_DELAY = 0.03
|
|
|
|
FONT = "/IBMPlexMono-Medium-24_jep.bdf"
|
|
|
|
# Learn guide count (ID = 0)
|
|
matrixportal.add_text(
|
|
text_font=FONT,
|
|
text_position=(
|
|
(matrixportal.graphics.display.width // 12) - 1,
|
|
(matrixportal.graphics.display.height // 2) - 4,
|
|
),
|
|
text_color=0x800000,
|
|
)
|
|
matrixportal.preload_font("0123456789")
|
|
|
|
# Learn guide title (ID = 1)
|
|
matrixportal.add_text(
|
|
text_font=terminalio.FONT,
|
|
text_position=(2, 25),
|
|
text_color=0x000080,
|
|
scrolling=True,
|
|
)
|
|
|
|
|
|
def get_guide_info(index):
|
|
"""Parses JSON data returned by the DATA_SOURCE
|
|
to obtain the ALS guide title and number of guides and
|
|
sets the text labels.
|
|
:param int index: Guide index to display
|
|
|
|
"""
|
|
if index > DISPLAY_NUM_GUIDES:
|
|
raise RuntimeError("Provided index may not be larger than DISPLAY_NUM_GUIDES.")
|
|
print("Obtaining guide info for guide %d..." % index)
|
|
|
|
# Traverse JSON data for title
|
|
guide_count = matrixportal.network.json_traverse(als_data.json(), ["guide_count"])
|
|
|
|
# Set guide count
|
|
matrixportal.set_text(guide_count, 0)
|
|
|
|
guides = matrixportal.network.json_traverse(als_data.json(), TITLE_DATA_LOCATION)
|
|
guide_title = guides[index]["guide"]["title"]
|
|
print("Guide Title", guide_title)
|
|
|
|
# Select color for title text
|
|
color_index = randrange(0, len(colors))
|
|
|
|
# Set the title text color
|
|
matrixportal.set_text_color(colors[color_index], 1)
|
|
|
|
# Set the title text
|
|
matrixportal.set_text(guide_title, 1)
|
|
|
|
|
|
refresh_time = None
|
|
guide_idx = 0
|
|
prv_hour = 0
|
|
while True:
|
|
if (not refresh_time) or (time.monotonic() - refresh_time) > 900:
|
|
try:
|
|
print("obtaining time from adafruit.io server...")
|
|
matrixportal.get_local_time()
|
|
refresh_time = time.monotonic()
|
|
except RuntimeError as e:
|
|
print("Unable to obtain time from Adafruit IO, retrying - ", e)
|
|
continue
|
|
|
|
if time.localtime()[3] != prv_hour:
|
|
print("New Hour, fetching new data...")
|
|
# Fetch and store guide info response
|
|
als_data = matrixportal.network.fetch(DATA_SOURCE)
|
|
prv_hour = time.localtime()[3]
|
|
|
|
# Cycle through guides retrieved
|
|
if guide_idx < DISPLAY_NUM_GUIDES:
|
|
get_guide_info(guide_idx)
|
|
|
|
# Scroll the scrollable text block
|
|
matrixportal.scroll_text(SCROLL_DELAY)
|
|
guide_idx += 1
|
|
else:
|
|
guide_idx = 0
|
|
time.sleep(0.05)
|