BigClown Core - RPI - Azure Connection

• You need to have BigClown Core unit and connect it to Raspberry PI via USB
• upload firmware to core unit and/or remote unit
• remote unit sends data via wireless conection to base unit and core unit writes data to serial port via USB-ACM
• use Raspberry PI 2/3 with Win 10 IoT Core and this project
• this project reads data from serial port and sends it into Azure IoT Hub
• you need Microsoft Azure subscription
• configure Azure IoT Hub and create device there, get device key/name and fill it in code
• consume from IoT Hub with stream analytics

Sample Data

Data from serial line:

["base/thermometer/i2c0-49", {"temperature": [25.25, "\u2103"]}]
["base/light/-", {"state": true}]
["remote/push-button/-", {"event-count": 16}]

Coressponding data to send to azure after parsing in RPI

{"address":"base","name":"thermometer","id":"i2c0-49","data":{"temperature":[25.25,"℃"]}}
{"address":"base","name":"light","id":"-","data":{"state":true}}
{"address":"remote","name":"push-button","id":"-","data":{"event-count":16}}

Setup Device in Azure IoTHub

use Device Explorer to monitor that data are correctly received by IoTHub

Stream Analytics

use following code for parsing data from IoT Hub

SELECT
    [input].address,
    [input].name,
    [input].id,
    dataReading.PropertyName as dataName,
    CASE WHEN dataReading.PropertyName = 'temperature' THEN GetArrayElement(dataReading.PropertyValue, 0) ELSE dataReading.PropertyValue END as dataValue,     
    [input].data
INTO
    [output]
FROM
    [input]
CROSS APPLY GetRecordProperties([input].data) AS dataReading