add Adafruit IO example!

Author: brentru

examples/wiznet5k_aio_post.py

@@ -0,0 +1,39 @@
+import time
+import board
+import busio
+from digitalio import DigitalInOut
+from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
+import adafruit_wiznet5k.adafruit_wiznet5k_socket as socket
+import adafruit_requests as requests
+
+# Get Adafruit.io details from a secrets.py file
+try:
+    from secrets import secrets
+except ImportError:
+    print("WiFi secrets are kept in secrets.py, please add them there!")
+    raise
+
+cs = DigitalInOut(board.D10)
+spi_bus = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+
+# Initialize ethernet interface with DHCP
+eth = WIZNET5K(spi_bus, cs)
+requests.set_socket(socket, eth)
+
+counter = 0
+
+while True:
+    print("Posting data...", end='')
+    data = counter
+    feed = 'test'
+    payload = {'value':data}
+    response = requests.post(
+        "http://io.adafruit.com/api/v2/"+secrets['aio_username']+"/feeds/"+feed+"/data",
+        json=payload,
+        headers={"X-AIO-KEY":secrets['aio_key']})
+    print(response.json())
+    response.close()
+    counter = counter + 1
+    print("OK")
+    response = None
+    time.sleep(15)