# TCP support # https://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/network_tcp.html import socket # SSL wrapper for Socket import ussl # DHT11 and DHT22 library # https://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/dht.html import dht # functions related to the board - http://docs.micropython.org/en/latest/esp8266/library/machine.html import machine # Azure IoT Hub configuration # https://docs.microsoft.com/en-us/azure/iot-hub/ # Shared Access Signature SAS = "" # Host name HOST = "" # Device name DEVICE = "" # Wemos D1 Mini DHT Shield is on pin 2 (D4) # Use ESP8266 GPIO pin numbers # https://www.wemos.cc/product/d1-mini-pro.html d = dht.DHT22(machine.Pin(2)) def main(use_stream=True): # Ask for data d.measure() data = b"{'t': " + str(d.temperature()) + ", 'h': " + str(d.humidity()) + "}" s = socket.socket() ai = socket.getaddrinfo(HOST, 443) addr = ai[0][-1] s.connect(addr) # SSL wrap s = ussl.wrap_socket(s) # Send POST request to Azure IoT Hub s.write("POST /devices/" + DEVICE + "/messages/events?api-version=2016-02-03 HTTP/1.0\r\n") # HTTP Headers s.write("Host: " + HOST + "\r\n") s.write("Authorization: " + SAS + "\r\n") s.write("Content-Type: application/json\r\n") s.write("Connection: close\r\n") s.write("Content-Length: " + str(len(data)) + "\r\n\r\n") # Data s.write(data) # Print 128 bytes of response print(s.read(128)) s.close() # Run main()