1  import board
 2  import busio
 3  from digitalio import DigitalInOut
 4  import adafruit_esp32spi.adafruit_esp32spi_socket as socket
 5  from adafruit_esp32spi import adafruit_esp32spi
 6  import adafruit_requests as requests
 7  
 8  # Add a secrets.py to your filesystem that has a dictionary called secrets with "ssid" and
 9  # "password" keys with your WiFi credentials. DO NOT share that file or commit it into Git or other
10  # source control.
11  # pylint: disable=no-name-in-module,wrong-import-order
12  try:
13      from secrets import secrets
14  except ImportError:
15      print("WiFi secrets are kept in secrets.py, please add them there!")
16      raise
17  
18  # If you are using a board with pre-defined ESP32 Pins:
19  esp32_cs = DigitalInOut(board.ESP_CS)
20  esp32_ready = DigitalInOut(board.ESP_BUSY)
21  esp32_reset = DigitalInOut(board.ESP_RESET)
22  
23  # If you have an externally connected ESP32:
24  # esp32_cs = DigitalInOut(board.D9)
25  # esp32_ready = DigitalInOut(board.D10)
26  # esp32_reset = DigitalInOut(board.D5)
27  
28  spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
29  esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
30  
31  print("Connecting to AP...")
32  while not esp.is_connected:
33      try:
34          esp.connect_AP(secrets["ssid"], secrets["password"])
35      except RuntimeError as e:
36          print("could not connect to AP, retrying: ", e)
37          continue
38  print("Connected to", str(esp.ssid, "utf-8"), "\tRSSI:", esp.rssi)
39  
40  # Initialize a requests object with a socket and esp32spi interface
41  socket.set_interface(esp)
42  requests.set_socket(socket)
43  
44  JSON_GET_URL = "http://httpbin.org/get"
45  
46  # Define a custom header as a dict.
47  headers = {"user-agent": "blinka/1.0.0"}
48  
49  print("Fetching JSON data from %s..." % JSON_GET_URL)
50  response = requests.get(JSON_GET_URL, headers=headers)
51  print("-" * 60)
52  
53  json_data = response.json()
54  headers = json_data["headers"]
55  print("Response's Custom User-Agent Header: {0}".format(headers["User-Agent"]))
56  print("-" * 60)
57  
58  # Read Response's HTTP status code
59  print("Response HTTP Status Code: ", response.status_code)
60  print("-" * 60)
61  
62  # Read Response, as raw bytes instead of pretty text
63  print("Raw Response: ", response.content)
64  
65  # Close, delete and collect the response data
66  response.close()