84 lines
2.9 KiB
Python
84 lines
2.9 KiB
Python
"""
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This example will figure out the current local time using the internet, and
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then draw out a countdown clock until an event occurs!
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Once the event is happening, a new graphic is shown
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"""
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import time
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import board
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from adafruit_pyportal import PyPortal
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from adafruit_bitmap_font import bitmap_font
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from adafruit_display_text.label import Label
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# The time of the thing!
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EVENT_YEAR = 2020
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EVENT_MONTH = 9
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EVENT_DAY = 9
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EVENT_HOUR = 0
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EVENT_MINUTE = 0
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# we'll make a python-friendly structure
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event_time = time.struct_time((EVENT_YEAR, EVENT_MONTH, EVENT_DAY,
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EVENT_HOUR, EVENT_MINUTE, 0, # we don't track seconds
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-1, -1, False)) # we dont know day of week/year or DST
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# determine the current working directory
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# needed so we know where to find files
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cwd = ("/"+__file__).rsplit('/', 1)[0]
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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(status_neopixel=board.NEOPIXEL,
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default_bg=cwd+"/circuitpython_day_countdown_background.bmp")
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big_font = bitmap_font.load_font(cwd+"/fonts/Helvetica-Bold-36.bdf")
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big_font.load_glyphs(b'0123456789') # pre-load glyphs for fast printing
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event_background = cwd+"/countdown_event.bmp"
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days_position = (8, 207)
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hours_position = (110, 207)
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minutes_position = (220, 207)
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text_color = 0xFFFFFF
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text_areas = []
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for pos in (days_position, hours_position, minutes_position):
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textarea = Label(big_font)
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textarea.x = pos[0]
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textarea.y = pos[1]
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textarea.color = text_color
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pyportal.splash.append(textarea)
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text_areas.append(textarea)
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refresh_time = None
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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 refresh_time) or (time.monotonic() - refresh_time) > 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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refresh_time = 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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now = time.localtime()
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print("Current time:", now)
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remaining = time.mktime(event_time) - time.mktime(now)
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print("Time remaining (s):", remaining)
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if remaining < 0:
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# oh, its event time!
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pyportal.set_background(event_background)
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while True: # that's all folks
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pass
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secs_remaining = remaining % 60
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remaining //= 60
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mins_remaining = remaining % 60
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remaining //= 60
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hours_remaining = remaining % 24
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remaining //= 24
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days_remaining = remaining
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print("%d days, %d hours, %d minutes and %s seconds" %
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(days_remaining, hours_remaining, mins_remaining, secs_remaining))
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text_areas[0].text = '{:>2}'.format(days_remaining) # set days textarea
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text_areas[1].text = '{:>2}'.format(hours_remaining) # set hours textarea
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text_areas[2].text = '{:>2}'.format(mins_remaining) # set minutes textarea
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# update every 10 seconds
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time.sleep(10)
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