Integrate IoT device into DevOps culture with creating a Backend deployment to Azure

This project is about bootstrapping a device (here ESP8266) from Azure cloud eith only a little initial code without any passwords. It suits the case, when producing a piece of IoT hardware for use at innocent place an owner, it will be flashed with bootstrap code, to establish a connection to a productive environment in Azure.

1. The initial code contains only one endpoint. There, the ESP connects to.
2. In Azrue a device identity will be created from transmitted MAC-Address and a new endpoint will be retransmitted together with it's new identity connection string.
3. After ESP receives that connection, it will download the up to date flash binary (firmware) and starts flashing process imediately.
4. The firmware contains all features (for now its only sending temperature data and faked battery values in intervals to Azure IoT Hub )
5. ESP8266 will start as soon flash is done and connection to Internet is set up.

This repository contains three applications.

• Initial Code for connection to DeviceManager InitApp
• The Firmware code IoTSolution
• WebSite for sending commands to device IoTWeb To get this working on local machine, you have to prepare as described in the following sections.

• First you need an ESP8266 (7/12/2e,...) - best with dev-board. Setting up your computer for accessing the hardware under windows is pretty easy. Connect it with USB, if you have a Developer-Board. Otherwise use a search-engine you prefer or have a look to this great "Instructable-Page"
• Git - download here (as well as Git Credential Manager for Linux or Mac OS)
• VSCode - you can install it from here or clone it from here.
• Node.JS - Download here
• NPM

1. Install Azure PowerShell
2. Clone this repository
3. Change to directory IoTSolution
4. npm install
5. npm install -g gulp
6. modify config.json and add the COM-port, where ESP8266 is connected to
   1. open config.json
   2. open DeviceManager on Windows and have a look to the node "Connections (COM & LPT)"
   3. add the listed COM-port ID (e.g. "COM3") for your UART-Device as following "device_port": "COM3"
7. gulp install-tools
8. run setup-localEnvironment.ps1 in folder IoTSolution (this prepares your local environment to build and flash ESP-code to cable connected device)
9. gulp run or with listener gulp run --listen

• Release notes for Azure C SDK
• Introduction to Azure IoT Device SDK for C
• Arduino Commandline

• copy arduino-esp8266-nodemcu to node-modules/gulp-common
• (adding boards has do be done as defined in Boards.txt - C:\Users\XXX\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\boards.txt)
• if something goes wrong and flash is currupt: C:\Users\XXX\AppData\Local\Arduino15\packages\esp8266\tools\esptool\0.4.9/esptool.exe -cp COM3 -ce
• also a usefull tool, in case something goes wrong is the EspExceptionDecoder