Getting Started: ESP32

Requirements

In order to be able to compile for the ESP32 architecture you should have ESP-IDF v4.0 installed.

Get the latest release/v4.0 branch. This can be done using the following command:

git clone -b release/v4.0 --recursive https://github.com/espressif/esp-idf.git

Once the command above finishes follow the installation steps described in the ESP-IDF documentation.

Building

Make sure that the IDF_PATH environmental variable is set. On Linux you can use for example the following command:

export IDF_PATH=path/to/esp-idf

Replace path/to with the correct path.

Also make sure that the other ESP-IDF environmental variables are set. For example on Linux this can be done using the following command:

source $IDF_PATH/export.sh

Build the framework and application as usual, specifying SMING_ARCH =Esp32. For example:

cd $SMING_HOME/../samples/Basic_Serial
make SMING_ARCH=Esp32

This builds the application. Once built the application needs to be flashed on a real Esp32 microcontroller to run. Flashing can be done using the following command:

make flash

SDK

Sming comes with initial configuration for ESP-IDF. If needed you can re-configure ESP-IDF using the command below:

make SMING_ARCH=Esp32 sdk-menuconfig

A re-compilation is required after the change of the configuration. This can be done with the following command:

make SMING_ARCH=Esp32 sdk-build