ATSAMR34_ECC608A_TTI

“Wireless Made Easy!" - Develop with the SAM R34 LoRa SiP and WLR089U0 Module with Microchip LoRaWAN stack on TTI join server

               

⚠ Disclaimer

THE SOFTWARE ARE PROVIDED "AS IS" AND GIVE A PATH FOR SELF-SUPPORT AND SELF-MAINTENANCE.

This repository contains unsupported example code intended to help accelerate client product development. It is not validated for production nor audited for security best-practices.

Note that while this repository is unsupported, Microchip welcome community contributions, and all pull-requests will be considered for inclusion into the repository.

Interact with peers in the community at LoRa Forum.

Abstract

This guide will direct you through the process of getting started with developing a secure LoRa end device product using Microchip Technology's Pre-provisioned ATECC608A secure element along with TTI Join server.
The Things Industries created a product and a service that delivers secure join, secure communication and secure key provisioning.

Sample Applications

Clone/Download the current repo to get the software.

A la carte

1. Material required
2. Software
3. Hardware setup
4. Sample Application Code
5. Claiming and Activating the device
6. Running the demo

Material required

Purchase samples of the ATECC608A-TNGLORA secure element and the CryptoAuthentication UDFN Socket Kit

Purchase the SAM R34 Xplained Pro Evaluation Kit

Purchase the WLR089U0 Xplained Pro Evaluation Kit

Purchase a LoRa(r) Gateway from The Things Industries

Software

• Download and install Microchip Studio 7.0 IDE.
• Open Microchip Studio 7.0 IDE.
• From Tools - > Extensions and updates, install Advanced Software Framework (ASFv3) v3.49.0 release or upper release.
• Restart Microchip Studio
• Download and install a serial terminal program like Tera Term.
  

Hardware setup

Configure the DIP switch of the CryptoAuthenticationUDFN Socket kit for I2C communication with the host microcontroller. 1, 3 and 6 must be placed to ON position

Open the socket board

Make sure the ATECC608A device is ready to be inserted in the right direction. Make sure the pin 1 of the component (represented by a point) is located at the bottom left.

Place the Secure Element in the UDFN socket

Make sure the Secure Element is properly seated and the pin 1 is located at the bottom left.

Close the clam shell lid.

Attach the CryptoAuthenticationUDFN Socket kit to the SAM R34 Xplained Pro board on the EXT3 header.
Plug the antenna. Attach a USB cable to SAM R34 Xplained Pro board's EDBG micro-B port on the right.
The USB ports powers the board and enables the user to communicate with the kits.

Same setup is valid for WLR089U0 Xplained Pro as well

• Wait for USB driver installation and COM ports mounting.
  
• Launch Tera Term program and configure the serial ports mounted with: 115200 bps, 8/N/1

Sample Application Code

Open the "APPS_ENDDEVICE_DEMO" project with Microchip Studio 7 IDE
From the top menu, go to Project -> APPS_ENDDEVICE_DEMO Properties
From Tool settings, select your board as EDBG debugger with SWD interface

Build and download the project by clicking the empty green "Run without debugging" triangle

Open the Tera Term UART console previously configured at 115200 bps, 8-data bits/No parity/1-stop bit
Press the "Reset" button on the SAM R34 Xplained Pro board to see output printed to the console
Observe the following identifiers coming from the ATECC608A Secure Element

In order to pre-commission a device using ATECC608A secure element in TTI Activation, the following idenfiers are required:

• DevEUI: LoRaWAN device 64-bit unique identifier assigned by the Device manufacturer (or using Secure Element default value)
• JoinEUI: LoRaWAN JS 64-bit unique identifier of the Join Server on which AppKey of the device is stored

Claiming and Activating the device

TTI and Microchip developed a security solution for LoRaWAN that enables secure key provisioning and secure cryptographic operations using secure elements.

• End-to-end LoRaWAN Security solution
  

Claiming and Activating the device within TTI Servers are the next steps described in the guides below:

• Claim ATECC608A Secure Elements
  
• Activate devices on the Things Industries Cloud Hosted
  

You can also refer to the Microchip Workshop which was provided at The Things Conference 2020.
“Wireless Made Fun!" - Secure Authentication with SAMR34 & ATECC608A and The Things Industries’s Join Server

Running the demo

Go back to the Tera Term UART console

Press "1" to start the Demo Application
Select the band where your device is operating

Then, the end device application transmits a Join Request message. If a Join Accept message was received and validated, the SAM R34 Xplained Pro board will be joined to the Join Server.

Press "2" to send a packet consisting of a temperature sensor reading