Edge Impulse firmware for SiLabs Thunderboard Sense 2

Edge Impulse enables developers to create the next generation of intelligent device solutions with embedded Machine Learning. This repository contains the Edge Impulse firmware for the Silicon Labs Thunderboard Sense 2 development board. This device supports all Edge Impulse device features, including ingestion, remote management and inferencing.

Note: Do you just want to use this development board with Edge Impulse? No need to build this firmware. See the instructions here for a prebuilt image and instructions.

This firmware has a BLE capabilities built-in that allow you to start/stop inference and see its results on the mobile phone.

Source code organization

• If you want to deploy your model (exported as a Simplicity Studio Component from Studio), extract the exported zip file content into:

  extension

Reporting issues

This repository is a snapshot of the Edge Impulse internal code base, therefore PRs won't be merged. If you find any bugs or want to contribute use our Developer Forum to submit them.

Requirements

Hardware

• SiLabs Thunderboard Sense 2 development board (documentation)

⚠️ This board is Not recommended for new designs. For a replacement, see the EFR32xG24 Dev Kit ⚠️

Software

For a local build using command line tools:

• SLC CLI Tools
• GNU Arm Embedded Toolchain 10-2020-q4-major
• Gecko SDK v4.0.2

For build using Docker container:

• Docker Desktop

For build using Simplicity Studio v5:

• Simplicity Studio 5 with Gecko SDK 4.0.2

How to build

Local build using command line tools

1. Clone the Gecko SDK v.4.0.2

   git clone -b v4.0.2 https://github.com/SiliconLabs/gecko_sdk.git
   

2. Install SLC CLI Tools (see p. 2.1)

3. Configure SLC CLI to point the location of the Gecko SDK and sign the SDK

   slc configuration --sdk /home/user/gecko_sdk/
   slc signature trust --sdk /home/user/gecko_sdk/
   

4. Also configure the default location of your toolchain, eg.

   slc configuration --gcc-toolchain /opt/toolchains/gcc-arm-none-eabi-10-2020-q4-major
   

5. Clone this repository and build

   git clone [email protected]:edgeimpulse/firmware-silabs-thunderboard-sense-2.git
   cd firmware-silabs-thunderboard-sense-2/
   ./build.sh --build
   

Using Docker

1. Clone this repository

   git clone [email protected]:edgeimpulse/firmware-silabs-thunderboard-sense-2.git
   cd firmware-silabs-thunderboard-sense-2/
   

2. Build the container

   $ docker build -t edge-impulse-silabs .
   

3. Build the application

   docker run --rm -v $PWD:/app edge-impulse-silabs /bin/bash build.sh --build
   

Using Simplicity Studio v5

1. Install Simplicity Studio v5 and Gecko SDK v4.0.2

2. Clone this repository

3. In the Simplicity Studio, choose File -> Import

   

4. Browse to the directory with cloned repository select firmware-tunderboard-sense-2 project and clik Next

   

5. Check if all imported configurations are correct, especially Board, SDK and Toolchain:

   

6. Choose a project name in your workspace and finish

   

7. We have to make a few tweaks before building the project. In the Project Explorer panel, right click on the extension directory and choose Delete

   

8. Confirm that only workspace link will be removed, the target will remain unchanged

   

9. Now, double click on the firmware-xg24.slcp file to open project configuration

   

10. In the new window choose Change Targed/SDK/Generators

    

11. Make sure only Simplicity IDE Project generator is selected, REMOVE any other generators.

    

12. Build the project

    

How to flash the board

You can either drag ./build/debug/firmware-silabs-thunderboard-sense-2.bin to the TB004 mass-storage device (mounts as a USB flash drive), or flash with the Simplicity Commander tool via:

```
$ ./build.sh --flash
```