1Nanopb is a small code-size Protocol Buffers implementation in ansi C. It is 2especially suitable for use in microcontrollers, but fits any memory 3restricted system. 4 5Homepage: http://kapsi.fi/~jpa/nanopb/ 6 7 8 9 10Using the nanopb library 11======================== 12To use the nanopb library, you need to do two things: 13 141) Compile your .proto files for nanopb, using protoc. 152) Include pb_encode.c and pb_decode.c in your project. 16 17The easiest way to get started is to study the project in "examples/simple". 18It contains a Makefile, which should work directly under most Linux systems. 19However, for any other kind of build system, see the manual steps in 20README.txt in that folder. 21 22 23 24Using the Protocol Buffers compiler (protoc) 25============================================ 26The nanopb generator is implemented as a plugin for the Google's own protoc 27compiler. This has the advantage that there is no need to reimplement the 28basic parsing of .proto files. However, it does mean that you need the 29Google's protobuf library in order to run the generator. 30 31If you have downloaded a binary package for nanopb (either Windows, Linux or 32Mac OS X version), the 'protoc' binary is included in the 'generator-bin' 33folder. In this case, you are ready to go. Simply run this command: 34 35 generator-bin/protoc --nanopb_out=. myprotocol.proto 36 37However, if you are using a git checkout or a plain source distribution, you 38need to provide your own version of protoc and the Google's protobuf library. 39On Linux, the necessary packages are protobuf-compiler and python-protobuf. 40On Windows, you can either build Google's protobuf library from source or use 41one of the binary distributions of it. In either case, if you use a separate 42protoc, you need to manually give the path to nanopb generator: 43 44 protoc --plugin=protoc-gen-nanopb=nanopb/generator/protoc-gen-nanopb ... 45 46 47 48Running the tests 49================= 50If you want to perform further development of the nanopb core, or to verify 51its functionality using your compiler and platform, you'll want to run the 52test suite. The build rules for the test suite are implemented using Scons, 53so you need to have that installed. To run the tests: 54 55 cd tests 56 scons 57 58This will show the progress of various test cases. If the output does not 59end in an error, the test cases were successful. 60 61 62