1  # SPDX-FileCopyrightText: 2019 Limor Fried for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  """
 6  This example will access the coindesk API, grab a number like bitcoin value in
 7  USD and display it on a screen
 8  If you can find something that spits out JSON data, we can display it!
 9  """
10  import time
11  import board
12  from adafruit_pyportal import PyPortal
13  
14  # You can display in 'GBP', 'EUR' or 'USD'
15  CURRENCY = 'USD'
16  # Set up where we'll be fetching data from
17  DATA_SOURCE = "https://api.coindesk.com/v1/bpi/currentprice.json"
18  DATA_LOCATION = ['bpi', CURRENCY, 'rate_float']
19  
20  def text_transform(val):
21      if CURRENCY == 'USD':
22          return "$%d" % val
23      if CURRENCY == 'EUR':
24          return "‎€%d" % val
25      if CURRENCY == 'GBP':
26          return "£%d" % val
27      return "%d" % val
28  
29  # the current working directory (where this file is)
30  cwd = ("/"+__file__).rsplit('/', 1)[0]
31  pyportal = PyPortal(url=DATA_SOURCE, json_path=DATA_LOCATION,
32                      status_neopixel=board.NEOPIXEL,
33                      default_bg=cwd+"/bitcoin_background.bmp",
34                      text_font=cwd+"/fonts/Arial-Bold-24-Complete.bdf",
35                      text_position=(195, 130),
36                      text_color=0x0,
37                      text_transform=text_transform)
38  pyportal.preload_font(b'$012345789')  # preload numbers
39  pyportal.preload_font((0x00A3, 0x20AC)) # preload gbp/euro symbol
40  
41  while True:
42      try:
43          value = pyportal.fetch()
44          print("Response is", value)
45      except (ValueError, RuntimeError, ConnectionError, OSError) as e:
46          print("Some error occured, retrying! -", e)
47  
48      time.sleep(3*60)  # wait 3 minutes