pnlBoardControls: skip read all when not connected
pnlBoardControls: skip read all when not connected

myriadrf/LimeSuite,limemicro/lms7suite,myriadrf/LimeSuite,limemicro/lms7suite,limemicro/lms7suite,myriadrf/LimeSuite,limemicro/lms7suite,myriadrf/LimeSuite,limemicro/lms7suite,myriadrf/LimeSuite