URL: http://koti.kapsi.fi/jpa/nanopb/
Version: 2.8.0
License: zlib
Description: "nanopb-c: A plugin for Google Protobuf compiler that generates C code"

To use with Android modify Android.mk adding .proto files to
LOCAL_SRC_FILES and set LOCAL_PROTOC_OPTIMIZE_TYPE:

  LOCAL_SRC_FILES += simple.proto
  LOCAL_PROTOC_OPTIMIZE_TYPE := nanopb-c

Then look at http://koti.kapsi.fi/jpa/nanopb/ Documentation for how to use nanopb-c.