BUS PROTOCOL FOR DYNAMIC LIGHTING APPLICATION

A method of operating a plurality of driving units for powering electronic units is described. The method comprises interchanging a data frame including a bit sequence, between a master control unit (MCU) and at least one of a plurality of driving units at slave nodes. The method comprises applying an ID field for addressing at least one driving unit, and applying a data field comprising information and/or instructions regarding the status of the electronic units. Applying the ID field comprises indicating the driving unit address using a first bit sub-string comprising N bits, allowing the master control unit to identify whether data should be received or transmitted, or allowing each addressed driving unit to decode which action is required by the master control unit, using an R/T command bit, performing a length decoding step, for including information in the ID field regarding the type of instructions included in the data frame, using an F function bit, and assigning data bits to different electronic units or indicating in the length of the bit string in the data field, using a second bit sub-string. A corresponding system comprising a plurality of driving units eachz for driving at least one electronic unit is also claimed.