c466aeb584
Updating the code file to use a delta to check the light sensor percentage over time. Also removing an older CP method from openweather_graphics.
121 lines
4.3 KiB
Python
121 lines
4.3 KiB
Python
# SPDX-FileCopyrightText: 2022 Liz Clark for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import sys
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import time
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import board
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from analogio import AnalogIn
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from adafruit_pyportal import PyPortal
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cwd = ("/"+__file__).rsplit('/', 1)[0] # the current working directory (where this file is)
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sys.path.append(cwd)
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import openweather_graphics # pylint: disable=wrong-import-position
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# Get wifi details and more from a secrets.py file
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try:
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from secrets import secrets
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except ImportError:
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print("WiFi secrets are kept in secrets.py, please add them there!")
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raise
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# Use cityname, country code where countrycode is ISO3166 format.
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# E.g. "New York, US" or "London, GB"
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LOCATION = "New York, US"
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# Set up where we'll be fetching data from
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DATA_SOURCE = "http://api.openweathermap.org/data/2.5/weather?q="+LOCATION
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DATA_SOURCE += "&appid="+secrets['openweather_token']
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# You'll need to get a token from openweather.org, looks like 'b6907d289e10d714a6e88b30761fae22'
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DATA_LOCATION = []
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# Initialize the pyportal object and let us know what data to fetch and where
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# to display it
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pyportal = PyPortal(url=DATA_SOURCE,
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json_path=DATA_LOCATION,
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status_neopixel=board.NEOPIXEL,
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default_bg=0x000000)
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display = board.DISPLAY
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# rotate display for portrait orientation
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display.rotation = 270
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# instantiate the openweather_graphics class
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gfx = openweather_graphics.OpenWeather_Graphics(pyportal.splash, am_pm=True, celsius=False)
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# time keeping for refreshing screen icons and weather information
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localtile_refresh = None
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weather_refresh = None
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# setup light sensor as an analog input
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analogin = AnalogIn(board.LIGHT)
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# analog scaling helper
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def getVoltage(pin):
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return (pin.value * 3.3) / 65536
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# timer for updating onscreen clock
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clock = time.monotonic()
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# timer for keeping backlight on
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light_clock = time.monotonic()
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# timer for checking the light sensor
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switch_clock = time.monotonic()
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# variable to scale light sensor reading
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ratio = 0
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# storing last light sensor ratio reading
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last_ratio = 0
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while True:
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# only query the online time once per hour (and on first run)
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if (not localtile_refresh) or (time.monotonic() - localtile_refresh) > 3600:
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try:
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print("Getting time from internet!")
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pyportal.get_local_time()
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localtile_refresh = time.monotonic()
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except RuntimeError as e:
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print("Some error occured, retrying! -", e)
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continue
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# only query the weather every 10 minutes (and on first run)
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if (not weather_refresh) or (time.monotonic() - weather_refresh) > 600:
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try:
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value = pyportal.fetch()
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print("Response is", value)
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gfx.display_weather(value)
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weather_refresh = time.monotonic()
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except RuntimeError as e:
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print("Some error occured, retrying! -", e)
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continue
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# every 0.1 seconds check the light sensor value
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if (time.monotonic() - switch_clock) > 0.1:
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# read the light sensor and scale it 0 to 3.3
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reading = getVoltage(analogin)
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# calculate the % of light out of the maximum light
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ratio = ((ratio + pow(1.0 - reading / 3.3, 4.0)) / 2.0)
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# create a comparison ratio with the last reading
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power_ratio = last_ratio + pow(last_ratio, 2.0)
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# if the comparison ratio is less than 1
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if power_ratio < 1:
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# and the current ratio is larger
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if ratio > power_ratio:
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# turn on the backlight
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pyportal.set_backlight(1)
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light_clock = time.monotonic()
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# otherwise (if in a darker room)
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else:
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# if there's a difference greater than 0.003
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# between the current ratio and the last ratio
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if ratio - last_ratio > 0.003:
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# turn on the backlight
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pyportal.set_backlight(1)
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light_clock = time.monotonic()
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# update last_ratio
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last_ratio = ratio
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switch_clock = time.monotonic()
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# after 10 seconds, turn off the backlight
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if (time.monotonic() - light_clock) > 10:
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pyportal.set_backlight(0)
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# every 30 seconds update time on screen
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if (time.monotonic() - clock) > 30:
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gfx.update_time()
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clock = time.monotonic()
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