add simpletest for messaging

Author: brentru

adafruit_azureiot.py

@@ -45,7 +45,7 @@
 AZ_API_VER = "2018-06-30" # Azure URI API Version Identifier
 AZURE_HTTP_ERROR_CODES = [400, 401, 404, 403, 412, 429, 500] # Azure HTTP Status Codes
 
-class IOT_HUB:
+class IOT_Hub:
     """
     Provides access to a Microsoft Azure IoT Hub.
     https://docs.microsoft.com/en-us/rest/api/iothub/

examples/azureiot_simpletest.py

@@ -0,0 +1,50 @@
+import microcontroller
+import board
+import busio
+from digitalio import DigitalInOut
+from adafruit_esp32spi import adafruit_esp32spi, adafruit_esp32spi_wifimanager
+import neopixel
+from adafruit_azureiot import IOT_Hub
+
+# Get wifi details and more 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
+
+# ESP32 Setup
+try:
+    esp32_cs = DigitalInOut(board.ESP_CS)
+    esp32_ready = DigitalInOut(board.ESP_BUSY)
+    esp32_reset = DigitalInOut(board.ESP_RESET)
+except AttributeError:
+    esp32_cs = DigitalInOut(board.D9)
+    esp32_ready = DigitalInOut(board.D10)
+    esp32_reset = DigitalInOut(board.D5)
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
+status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2) # Uncomment for Most Boards
+"""Uncomment below for ItsyBitsy M4"""
+#status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
+wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)
+
+# Create an instance of the Azure IoT Hub
+hub = IOT_Hub(wifi, secrets['azure_iot_hub'], secrets['azure_iot_sas'])
+
+# Set a device id (This name must match a device connected to your Azure IoT Hub)
+device_id = 'Blinka'
+
+# Send a Device-to-Cloud message
+cpu_temp = microcontroller.cpu.temperature
+print('Sending Temperature to Azure IoT Hub...')
+hub.send_device_message(device_id, str(cpu_temp))
+print('Data Sent!')
+
+# Receive a Cloud-to-Device message
+print('Receiving a message from an Azure IoT Hub...')
+message = hub.get_hub_message(device_id)
+if message == -1:
+    print('IoT Hub Message Queue is empty!')
+else:
+    print(message)