Edge Impulse Example: stand-alone inferencing for CMSIS toolbox

Example standalone inferecing for AVH created for CMSIS toolbox v2.3.0

Prerequisites

To add your model to your component library you need to use the cpackget utility:

cpackget add <your_model>.pack

Then you ned to add it to the solution and the project.

Solution

In inferencing.csolution.yml, substitute # - pack: EdgeImpulse::project_name@version with

• pack: EdgeImpulse::project_name@version

Project

In inferencing.cproject.yml, substitute # - component: EdgeImpulse::EdgeImpulse:model:project_name with

• component: EdgeImpulse::EdgeImpulse:model:project_name

Build the firmware

Using command line

The basic compilation command is:

cbuild inferencing.csolution.yml

This command will build for every target and avery configuration available.

To specify a configuration and target (ie Debug for CM55):

cbuild inferencing.csolution.yml --context inferencing.Debug+CM55

Other useful arguments are:

--update-rte

Update the RTE directory and files

--packs

Download missing software packs with cpackget

--clean

Remove intermediate and output directories

Check the CMSIS-Toolbox User Guide for a complete overview of the cbuild command.

Using CMSIS toolbox extension

In the CMSIS view, click on the hammer icon.

Run on AVH

The basic usage is:

<AVH FVP for the target> -f <fvp config file> <elf file to be loaded>

Some examples:

• Run Test on model for Cortex-M3 (Debug)

FVP_MPS2_Cortex-M3 -f ./Target/CM3/fvp_config.txt ./out/inferencing/CM3/Debug/CM55_inferencing.elf

• Run Test on model for Cortex-M55 with Ethos (Debug)

FVP_Corstone_SSE-300_Ethos-U55 -f ./Target/CM55_Ethos/fvp_config.txt ./out/inferencing/CM55_Ethos/Debug/CM55_inferencing.elf

Note

Tested using GCC 10.3.1 and GCC 12.3.1. Doesn't work with GCC 12.2.1 for MCU with Helium (Cortex-M55, Cortex-M85).