Communication: migrate to use the new global variable mechanism
Communication: migrate to use the new global variable mechanism

ming6842/firmware,ming6842/firmware,fboris/firmware,ming6842/firmware-new,UrsusPilot/firmware,ming6842/firmware,ming6842/firmware-new,UrsusPilot/firmware,fboris/firmware,fboris/firmware,ming6842/firmware-new,UrsusPilot/firmware