Package: nanopb
Nanopb - Protocol Buffers for Embedded SystemsNanopb is a small code-size Protocol Buffers implementation in ansi C. It is
especially suitable for use in microcontrollers, but fits any memory
restricted system.Homepage:https://jpa.kapsi.fi/nanopb/Git repository:https://github.com/nanopb/nanopb/Documentation:https://jpa.kapsi.fi/nanopb/docs/Forum:https://groups.google.com/forum/#!forum/nanopbStable version downloads:https://jpa.kapsi.fi/nanopb/download/Pre-release binary packages:https://github.com/nanopb/nanopb/actions/workflows/binary_packages.ymlUsing the nanopb libraryTo use the nanopb library, you need to do two things:Compile your .proto files for nanopb, usingprotoc.Includepb_encode.c,pb_decode.candpb_common.cin your project.The easiest way to get started is to study the project in "examples/simple".
It contains a Makefile, which should work directly under most Linux systems.
However, for any other kind of build system, see the manual steps in
README.txt in that folder.Generating the headersProtocol Buffers messages are defined in a.protofile, which follows a standard
format that is compatible with all Protocol Buffers libraries. To use it with nanopb,
you need to generate.pb.cand.pb.hfiles from it:python generator/nanopb_generator.py myprotocol.proto  # For source checkout
generator-bin/nanopb_generator myprotocol.proto        # For binary package(Note: For instructions for nanopb-0.3.9.x and older, see the documentation
of that particular versionhere)The binary packages for Windows, Linux and Mac OS X should contain all necessary
dependencies, including Python, python-protobuf library and protoc. If you are
using a git checkout or a plain source distribution, you will need to install
Python separately. Once you have Python, you can install the other dependencies
withpip install --upgrade protobuf grpcio-tools.You can further customize the header generation by creating an.optionsfile.
Seedocumentationfor details.Running the testsIf you want to perform further development of the nanopb core, or to verify
its functionality using your compiler and platform, you'll want to run the
test suite. The build rules for the test suite are implemented using Scons,
so you need to have that installed (ex:sudo apt install sconsorpip install scons).
To run the tests:cd tests
sconsThis will show the progress of various test cases. If the output does not
end in an error, the test cases were successful.Note: Mac OS X by default aliases 'clang' as 'gcc', while not actually
supporting the same command line options as gcc does. To run tests on
Mac OS X, use:scons CC=clang CXX=clang++. Same way can be used to run
tests with different compilers on any platform.For embedded platforms, there is currently support for running the tests
on STM32 discovery board andsimavrAVR simulator. Usescons PLATFORM=STM32andscons PLATFORM=AVRto run
these tests.Build systems and integrationNanopb C code itself is designed to be portable and easy to build
on any platform. Often the bigger hurdle is running the generator which
takes in the.protofiles and outputs.pb.cdefinitions.There exist build rules for several systems:Makefiles:extra/nanopb.mk, seeexamples/simpleCMake:extra/FindNanopb.cmake, seeexamples/cmakeSCons:tests/site_scons(generator only)Bazel:BUILD.bazelin source rootConan:conanfile.pyin source rootPlatformIO:https://platformio.org/lib/show/431/NanopbPyPI/pip:https://pypi.org/project/nanopb/vcpkg:https://vcpkg.info/port/nanopbAnd also integration to platform interfaces:Arduino:http://platformio.org/lib/show/1385/nanopb-arduino