uart Add uart_size_free_buffer functions
enocean Implement returncode from send_enocean_packet
can-or-control: reduce uart-buffer size for 2 enocean frame
can-or-control: enocean.c: remove not needed parts
can-light-control: remove reset_visualisation() for debugging
makefile
can-light-control: shackbus.c: Fix a failure came with commit c6868b0d6bd6f6f7beb768ee73e1c8e1d4868079
Merge branch 'master' into tests