1  # SPDX-FileCopyrightText: 2020 Anne Barela for Adafruit Industries
  2  #
  3  # SPDX-License-Identifier: MIT
  4  
  5  # SpaceX Launch Display, by Anne Barela November 2020
  6  # MIT License - for Adafruit Industries LLC
  7  # See https://github.com/r-spacex/SpaceX-API for API info
  8  
  9  import time
 10  import terminalio
 11  from adafruit_magtag.magtag import MagTag
 12  
 13  months = ["January", "February", "March", "April", "May", "June", "July",
 14            "August", "September", "October", "November", "December"]
 15  USE_24HR_TIME = True
 16  # in seconds, we can refresh about 100 times on a battery
 17  TIME_BETWEEN_REFRESHES = 24 * 60 * 60  # once a day delay
 18  
 19  # Set up data location and fields
 20  DATA_SOURCE = "https://api.spacexdata.com/v4/launches/next"
 21  DETAIL_LOCATION = ['details']
 22  NAME_LOCATION = ['name']
 23  DATE_LOCATION = ['date_local']
 24  
 25  # These functions take the JSON data keys and does checks to determine
 26  #   how to display the data. They're used in the add_text blocks below
 27  
 28  def mission_transform(val):
 29      if val == None:
 30          val = "Unavailable"
 31      return "Mission: " + val
 32  
 33  def time_transform(val2):
 34      if val2 == None:
 35          return "When: Unavailable"
 36      month = int(val2[5:7])
 37      day = int(val2[8:10])
 38      hour = int(val2[11:13])
 39      min = int(val2[14:16])
 40  
 41      if USE_24HR_TIME:
 42          timestring = "%d:%02d" % (hour, min)
 43      elif hour > 12:
 44          timestring = "%d:%02d pm" % (hour-12, min)
 45      else:
 46          timestring = "%d:%02d am" % (hour, min)
 47  
 48      return "%s %d, at %s" % (months[month-1], day, timestring)
 49  
 50  def details_transform(val3):
 51      if val3 == None or not len(val3):
 52          return "Details: To Be Determined"
 53      return "Details: " + val3[0:166] + "..."
 54  
 55  # Set up the MagTag with the JSON data parameters
 56  magtag = MagTag(
 57      url=DATA_SOURCE,
 58      json_path=(NAME_LOCATION, DATE_LOCATION, DETAIL_LOCATION)
 59  )
 60  
 61  magtag.add_text(
 62      text_font="/fonts/Lato-Bold-ltd-25.bdf",
 63      text_position=(10, 15),
 64      is_data=False
 65  )
 66  # Display heading text below with formatting above
 67  magtag.set_text("Next SpaceX Launch")
 68  
 69  # Formatting for the mission text
 70  magtag.add_text(
 71      text_font="/fonts/Arial-Bold-12.pcf",
 72      text_position=(10, 38),
 73      text_transform=mission_transform
 74  )
 75  
 76  # Formatting for the launch time text
 77  magtag.add_text(
 78      text_font="/fonts/Arial-12.bdf",
 79      text_position=(10, 60),
 80      text_transform=time_transform
 81  )
 82  
 83  # Formatting for the details text
 84  magtag.add_text(
 85      text_font=terminalio.FONT,
 86      text_position=(10, 94),
 87      line_spacing=0.8,
 88      text_wrap=47,     # wrap text at this count
 89      text_transform=details_transform
 90  )
 91  
 92  try:
 93      # Have the MagTag connect to the internet
 94      magtag.network.connect()
 95      # This statement gets the JSON data and displays it automagically
 96      value = magtag.fetch()
 97      print("Response is", value)
 98  except (ValueError, RuntimeError, ConnectionError, OSError) as e:
 99      print("Some error occured, retrying! -", e)
100  
101  # wait 2 seconds for display to complete
102  time.sleep(2)
103  magtag.exit_and_deep_sleep(TIME_BETWEEN_REFRESHES)