1  # SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
 2  # SPDX-License-Identifier: MIT
 3  
 4  import time
 5  import board
 6  import busio
 7  from digitalio import DigitalInOut
 8  
 9  from adafruit_esp32spi import adafruit_esp32spi
10  from adafruit_esp32spi import adafruit_esp32spi_wifimanager
11  
12  import neopixel
13  import adafruit_fancyled.adafruit_fancyled as fancy
14  
15  # Get wifi details and more from a secrets.py file
16  try:
17      from secrets import secrets
18  except ImportError:
19      print("WiFi secrets are kept in secrets.py, please add them there!")
20      raise
21  
22  print("ESP32 SPI webclient test")
23  
24  DATA_SOURCE = "https://api.thingspeak.com/channels/1417/feeds.json?results=1"
25  DATA_LOCATION = ["feeds", 0, "field2"]
26  
27  esp32_cs = DigitalInOut(board.D9)
28  esp32_ready = DigitalInOut(board.D10)
29  esp32_reset = DigitalInOut(board.D5)
30  spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
31  esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
32  """Use below for Most Boards"""
33  status_light = neopixel.NeoPixel(
34      board.NEOPIXEL, 1, brightness=0.2
35  )  # Uncomment for Most Boards
36  """Uncomment below for ItsyBitsy M4"""
37  # status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
38  wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)
39  
40  # neopixels
41  pixels = neopixel.NeoPixel(board.A1, 16, brightness=0.3)
42  pixels.fill(0)
43  
44  # we'll save the value in question
45  last_value = value = None
46  
47  while True:
48      try:
49          print("Fetching json from", DATA_SOURCE)
50          response = wifi.get(DATA_SOURCE)
51          print(response.json())
52          value = response.json()
53          for key in DATA_LOCATION:
54              value = value[key]
55              print(value)
56          response.close()
57      except (ValueError, RuntimeError) as e:
58          print("Failed to get data, retrying\n", e)
59          wifi.reset()
60          continue
61  
62      if not value:
63          continue
64      if last_value != value:
65          color = int(value[1:], 16)
66          red = color >> 16 & 0xFF
67          green = color >> 8 & 0xFF
68          blue = color & 0xFF
69          gamma_corrected = fancy.gamma_adjust(fancy.CRGB(red, green, blue)).pack()
70  
71          pixels.fill(gamma_corrected)
72          last_value = value
73      response = None
74      time.sleep(60)