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This is the first revision of th VSI source code that contains the shared memory data repository to allow dynamically built data structures to be created in the VSI environment.
This allows very flexible high speed communication of data between threads or tasks on a single processor node system.
This repository contains the library required to distribute vehicle signals between components inside the IVI.
At this time, the API is rudimentary with extensions welcome by interested users.
This version of the library creates 2 shared memory segments. One is used internally by the shared memory memory management system and the other is available for user defined data. By default, the initial sizes of these segments are defined in the sharedMemory.h header file as defined constants and can be modified by the user to his application. This version of the code defines a 1MB system segment and a 2MB user segment by default.
Aug. 8, 2017 - Modified to allow the easy creation of VSI signals with an ASCII string as their value. Both the Python and C API functions have been modified to accept the "-a" ("--ascii") option to specify an ASCII string on creation. If both the "-v" and "-a" options are specified, the ASCII option will take precedence.
git clone https://github.com/GENIVI/vehicle_signal_interface.git
cd vehicle_signal_interface
mkdir build
cd build
cmake ..
make
- BUILD_LUA - Build Lua interface. Default OFF
- BUILD_PYTHON - Build Python interface. Default ON
- MIN_PYTHON_VERSION - Define minimal Python version to be used. Default 3.
E.g. to enable LUA building and use Python 2.7 version:
cmake .. -DBUILD_LUA=ON -DMIN_PYTHON_VERSION=2.7
NOTE: It may be required to completely clear build directory (i.e. rm -rf *) to change building options
To run the "sample" program, change directories to the "vehicle_signal_interface/api" directory and type "./sample".
Similarly, going to the "vehicle_signal_interface/core/tests" directory will allow you to run the executables that were created in that directory.
All of this code is still under constant development so things are likely to change in subsequent updates.
Some of the functions in the API have not yet been implemented and are stubbed off for the time being. Calling these functions right now will often result in some dummy data being returned or a warning message that the function has not yet been implemented.
As always, any and all feedback is welcome.
There has been a request to add "extern C" to the header files to allow them to be used with C++ builds.
The comparison function needs to be enhanced to define a more flexible comparison type. The immediate need is for a "string" type to allow string keys.