1  # SPDX-FileCopyrightText: 2020 John Park for Adafruit Industries
  2  #
  3  # SPDX-License-Identifier: MIT
  4  
  5  # Matrix Weather display
  6  # For Metro M4 Airlift with RGB Matrix shield, 64 x 32 RGB LED Matrix display
  7  
  8  """
  9  This example queries the Open Weather Maps site API to find out the current
 10  weather for your location... and display it on a screen!
 11  if you can find something that spits out JSON data, we can display it
 12  """
 13  import time
 14  import board
 15  import microcontroller
 16  from digitalio import DigitalInOut, Direction, Pull
 17  from adafruit_matrixportal.network import Network
 18  from adafruit_matrixportal.matrix import Matrix
 19  import openweather_graphics  # pylint: disable=wrong-import-position
 20  
 21  # Get wifi details and more from a secrets.py file
 22  try:
 23      from secrets import secrets
 24  except ImportError:
 25      print("WiFi secrets are kept in secrets.py, please add them there!")
 26      raise
 27  
 28  if hasattr(board, "D12"):
 29      jumper = DigitalInOut(board.D12)
 30      jumper.direction = Direction.INPUT
 31      jumper.pull = Pull.UP
 32      is_metric = jumper.value
 33  elif hasattr(board, "BUTTON_DOWN") and hasattr(board, "BUTTON_UP"):
 34      button_down = DigitalInOut(board.BUTTON_DOWN)
 35      button_down.switch_to_input(pull=Pull.UP)
 36  
 37      button_up = DigitalInOut(board.BUTTON_UP)
 38      button_up.switch_to_input(pull=Pull.UP)
 39      if not button_down.value:
 40          print("Down Button Pressed")
 41          microcontroller.nvm[0] = 1
 42      elif not button_up.value:
 43          print("Up Button Pressed")
 44          microcontroller.nvm[0] = 0
 45      print(microcontroller.nvm[0])
 46      is_metric = microcontroller.nvm[0]
 47  else:
 48      is_metric = False
 49  
 50  if is_metric:
 51      UNITS = "metric"  # can pick 'imperial' or 'metric' as part of URL query
 52      print("Jumper set to metric")
 53  else:
 54      UNITS = "imperial"
 55      print("Jumper set to imperial")
 56  
 57  # Use cityname, country code where countrycode is ISO3166 format.
 58  # E.g. "New York, US" or "London, GB"
 59  LOCATION = "Los Angeles, US"
 60  print("Getting weather for {}".format(LOCATION))
 61  # Set up from where we'll be fetching data
 62  DATA_SOURCE = (
 63      "http://api.openweathermap.org/data/2.5/weather?q=" + LOCATION + "&units=" + UNITS
 64  )
 65  DATA_SOURCE += "&appid=" + secrets["openweather_token"]
 66  # You'll need to get a token from openweather.org, looks like 'b6907d289e10d714a6e88b30761fae22'
 67  # it goes in your secrets.py file on a line such as:
 68  # 'openweather_token' : 'your_big_humongous_gigantor_token',
 69  DATA_LOCATION = []
 70  SCROLL_HOLD_TIME = 0  # set this to hold each line before finishing scroll
 71  
 72  # --- Display setup ---
 73  matrix = Matrix()
 74  network = Network(status_neopixel=board.NEOPIXEL, debug=True)
 75  if UNITS in ("imperial", "metric"):
 76      gfx = openweather_graphics.OpenWeather_Graphics(
 77          matrix.display, am_pm=True, units=UNITS
 78      )
 79  
 80  print("gfx loaded")
 81  localtime_refresh = None
 82  weather_refresh = None
 83  while True:
 84      # only query the online time once per hour (and on first run)
 85      if (not localtime_refresh) or (time.monotonic() - localtime_refresh) > 3600:
 86          try:
 87              print("Getting time from internet!")
 88              network.get_local_time()
 89              localtime_refresh = time.monotonic()
 90          except RuntimeError as e:
 91              print("Some error occured, retrying! -", e)
 92              continue
 93  
 94      # only query the weather every 10 minutes (and on first run)
 95      if (not weather_refresh) or (time.monotonic() - weather_refresh) > 600:
 96          try:
 97              value = network.fetch_data(DATA_SOURCE, json_path=(DATA_LOCATION,))
 98              print("Response is", value)
 99              gfx.display_weather(value)
100              weather_refresh = time.monotonic()
101          except RuntimeError as e:
102              print("Some error occured, retrying! -", e)
103              continue
104  
105      gfx.scroll_next_label()
106      # Pause between labels
107      time.sleep(SCROLL_HOLD_TIME)