facab8c5a7
This updates the minimal supported version of CMake to 3.16, which in turn enables us to use more CMake features and have a cleaner build system. This is the version that provides most new features and also the one we use in our latest docker image for CI.
Protobuf files for defining ESP Local Control message structures
The proto files under this directory are used by esp_local_ctrl for defining protobuf messages which are sent and received over protocomm transport layer. These proto files cannot be used directly and have to be compiled into C and Python files. The generated C files are used by esp_local_ctrl itself to create, delete and manipulate transaction packets. The generated Python files can be used by python based applications for implementing client side interface to esp_local_ctrl service running on a device.
Note : These proto files are not automatically compiled during the build process.
Compilation
Compilation requires protoc (Protobuf Compiler) and protoc-c (Protobuf C Compiler) installed. Since the generated files are to remain the same, as long as the proto files are not modified, therefore the generated files are already available under components/esp_local_ctrl/proto-c and components/esp_local_ctrl/python directories, and thus running cmake / make (and installing the Protobuf compilers) is optional.
If using cmake follow the below steps. If using make, jump to Step 2 directly.
Step 1 (Only for cmake)
When using cmake, first create a build directory and call cmake from inside:
mkdir build
cd build
cmake ..
Step 2
Simply run make to generate the respective C and Python files. The newly created files will overwrite those under components/esp_local_ctrl/proto-c and components/esp_local_ctrl/python