44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
"""
|
|
This example will access the coindesk API, grab a number like bitcoin value in
|
|
USD and display it on a screen
|
|
If you can find something that spits out JSON data, we can display it!
|
|
"""
|
|
import time
|
|
import board
|
|
from adafruit_pyportal import PyPortal
|
|
|
|
# You can display in 'GBP', 'EUR' or 'USD'
|
|
CURRENCY = 'USD'
|
|
# Set up where we'll be fetching data from
|
|
DATA_SOURCE = "https://api.coindesk.com/v1/bpi/currentprice.json"
|
|
DATA_LOCATION = ['bpi', CURRENCY, 'rate_float']
|
|
|
|
def text_transform(val):
|
|
if CURRENCY == 'USD':
|
|
return "$%d" % val
|
|
if CURRENCY == 'EUR':
|
|
return "€%d" % val
|
|
if CURRENCY == 'GBP':
|
|
return "£%d" % val
|
|
return "%d" % val
|
|
|
|
# the current working directory (where this file is)
|
|
cwd = ("/"+__file__).rsplit('/', 1)[0]
|
|
pyportal = PyPortal(url=DATA_SOURCE, json_path=DATA_LOCATION,
|
|
status_neopixel=board.NEOPIXEL,
|
|
default_bg=cwd+"/bitcoin_background.bmp",
|
|
text_font=cwd+"/fonts/Arial-Bold-24-Complete.bdf",
|
|
text_position=(195, 130),
|
|
text_color=0x0,
|
|
text_transform=text_transform)
|
|
pyportal.preload_font(b'$012345789') # preload numbers
|
|
pyportal.preload_font((0x00A3, 0x20AC)) # preload gbp/euro symbol
|
|
|
|
while True:
|
|
try:
|
|
value = pyportal.fetch()
|
|
print("Response is", value)
|
|
except (ValueError, RuntimeError) as e:
|
|
print("Some error occured, retrying! -", e)
|
|
|
|
time.sleep(3*60) # wait 3 minutes
|