Merge branch 'L2SDP-360' into 'master'

src/Makefile.am

src/constants.h

src/fpga.cpp

src/node.cpp

src/opcua/ua_server.cpp

src/periph/fpga.cpp

src/periph/fpga.h

src/registers.cpp

src/registers.h

src/tools/mmap.cpp

src/tools/util.h

src/tr.cpp