1  # SPDX-FileCopyrightText: 2020 Limor Fried for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import time
 6  import board
 7  from digitalio import DigitalInOut
 8  from adafruit_esp32spi import adafruit_esp32spi
 9  from adafruit_esp32spi import adafruit_esp32spi_wifimanager
10  from adafruit_featherwing import minitft_featherwing
11  import terminalio
12  from adafruit_display_text import label
13  import displayio
14  
15  minitft = minitft_featherwing.MiniTFTFeatherWing()
16  
17  # Get wifi details and more from a secrets.py file
18  try:
19      from secrets import secrets
20  except ImportError:
21      print("WiFi secrets are kept in secrets.py, please add them there!")
22      raise
23  
24  # If you are using a board with pre-defined ESP32 Pins:
25  esp32_cs = DigitalInOut(board.D13)
26  esp32_ready = DigitalInOut(board.D11)
27  esp32_reset = DigitalInOut(board.D12)
28  spi = board.SPI()
29  esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
30  wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets)
31  
32  # Symbol "INX" for S&P500, "DJIA" for Dow
33  DATA_SOURCE = "https://www.alphavantage.co/query?function=GLOBAL_QUOTE&apikey="
34  DATA_SOURCE += secrets['alphavantage_key']
35  symbols = ["DJIA", "INX", "AAPL", "TSLA", "MSFT"]
36  
37  # Set text, font, and color
38  group = displayio.Group()
39  symbol_text = label.Label(terminalio.FONT, text="WiFi", color=0xFFFFFF, scale=3)
40  symbol_text.anchor_point = (0.0, 0.0)
41  symbol_text.anchored_position = (0, 10)
42  
43  price_text = label.Label(terminalio.FONT, text="Connect...", color=0xFFFF00, scale=3)
44  price_text.anchor_point = (0, 1)
45  price_text.anchored_position = (0, 75)
46  
47  change_text = label.Label(terminalio.FONT, text="", color=0xFFFF00, scale=2)
48  change_text.anchor_point = (0, 0)
49  change_text.anchored_position = (80, 10)
50  
51  group.append(symbol_text)
52  group.append(price_text)
53  group.append(change_text)
54  minitft.display.show(group)
55  
56  refresh = None
57  i = 0
58  while True:
59      # only query the api every 10 sec (and on first run)
60      if (not refresh) or ((time.monotonic() - refresh) > 10):
61          try:
62              symbol = symbols[i]
63              i = (i + 1) % len(symbols)  # go to the next symbol
64              response = wifi.get(DATA_SOURCE+"&symbol="+symbol).json()
65              print("Response is", response)
66              symbol_text.text = response['Global Quote']['01. symbol']
67              spot = round(float(response['Global Quote']['05. price']))
68              price_text.text = '${:,d}'.format(spot)
69              change = float(response['Global Quote']['09. change'])
70              print("Price is $", spot, "Change: $", change)
71              if change >= 0:
72                  change_text.text = '+${:,d}'.format(round(change))
73                  change_text.color = 0x00FF00
74              else:
75                  change_text.text = '-${:,d}'.format(abs(round(change)))
76                  change_text.color = 0xFF0000
77              refresh = time.monotonic()
78          except RuntimeError as e:
79              print("Some error occured, retrying! -", e)
80              time.sleep(5)
81              continue
82      time.sleep(5)