This is a low-footprint C-based SDK that includes support for all of the following features:
By default, the SDK supports ESP32-LyraT development boards.
The SDK is so structured that it should be easily possible to support other hardware configurations.
Instructions for building, flashing and using the firmware are available here: https://github.com/espressif/esp-avs-sd ... yrat_alexa
Hands-Free Mode/Wake-Word Engine
The SDK also supports hands-free mode of operation. The example lyrat_alexa_sr/ is provided that demonstrates the use in a hands-free mode (activity triggered based on saying ‘Alexa’ instead of pushing a button).
The SDK release also includes a phone app for Android for performing (a) network configuration of the development board and (b) Authentication with Amazon. The source code for this app is also available here: https://github.com/espressif/esp-idf-pr ... rsions/avs. It can be easily modified to add your Alexa project’s ID and credentials. It can also be easily customized to the branding and look-and-feel of your products.