semi-related, since this is using an Arduino: the upcoming HAL messaging featureset which will replace NML will use protobuf as serialisation vehicle; other than NML this is not restricted to userland components; in fact I have HAL components in place which directly understand and generated protobuf messages; even in kernel. This was a key step to get rid of message transcoding and related warts, like usrmotif.cc. The RT component protobuf support uses nanopb for this which is actually targeted for embedded systems and has minimal prerequisites.
see http://code.google.com/p/nanopb/source/browse/, and http://koti.kapsi.fi/~jpa/nanopb/ You'll notice this adds a protobuf copability even to AVR controllers, and I dont think this is limited to AVR's. What this means is: in the future we will be able to use a single message format end-to-end (different from what we have now), significantly simplifying things and taking out an unnecessary source of bugs for instance you could have the following flow: userland code, say Python, generates a protobuf message and passes this to a HAL driver assume that HAL driver talks SPI to an arduino there is _no_ transcoding needed along the path; the arduino can understand the same message encoding used in userland code perfectly fine, and reply with a locally generated message which will again be perfectly understood if received by, say, the Python userland code. this gets rid of the need to reinvent wire formats when talking to outboard microcontrollers - single encoding, everything is end-to-end, no intermediate massage needed. - Michael ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
