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Merged
merged 3 commits into from
Nov 12, 2020
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Update readme with simpler Hello World #45

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65410e2
Update readme with simpler Hello World
lastcoolnameleft Nov 10, 2020
e61c537
Removed extra whitespace
lastcoolnameleft Nov 10, 2020
ca5cafc
Incorporated comments from PR
lastcoolnameleft Nov 12, 2020
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55 changes: 18 additions & 37 deletions README.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -41,51 +41,32 @@ Usage Example
import terminalio
from adafruit_matrixportal.matrixportal import MatrixPortal

# 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]

matrixportal = MatrixPortal(
url=DATA_SOURCE,
json_path=DATA_LOCATION,
status_neopixel=board.NEOPIXEL,
debug=True,
)
# --- Display setup ---
matrixportal = MatrixPortal(status_neopixel=board.NEOPIXEL, debug=True)
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@makermelissa makermelissa Nov 10, 2020 •
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Could you remove the debug=True? It was intended for debugging. ;) It was accidentally left in the current code.

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As a new user, the debug=True was valuable. I understand it's a left-over artifact, and it's one that I'm glad was there when I got started. If you feel strongly about it, I'll remove it.

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Interesting, I didn't realize it was so helpful. I suppose we can leave it if you like.


# Create a new label with the color and text selected
matrixportal.add_text(
text_font=terminalio.FONT,
text_position=(16, 16),
text_color=0xFFFFFF,
text_transform=text_transform,
text_position=(0, (matrixportal.graphics.display.height // 2) - 1),
scrolling=True,
)
matrixportal.preload_font(b"$012345789") # preload numbers
matrixportal.preload_font((0x00A3, 0x20AC)) # preload gbp/euro symbol

SCROLL_DELAY = 0.03

contents = [
{ 'text': 'THIS IS RED', 'color': '#cf2727'},
{ 'text': 'THIS IS BLUE', 'color': '#0846e4'},
]

while True:
try:
value = matrixportal.fetch()
print("Response is", value)
except (ValueError, RuntimeError) as e:
print("Some error occured, retrying! -", e)
for content in contents:
matrixportal.set_text(content['text'])

time.sleep(3 * 60) # wait 3 minutes
# Set the text color
matrixportal.set_text_color(content['color'])

# Scroll it
matrixportal.scroll_text(SCROLL_DELAY)

Contributing
============
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