Addressed compiler warnings and handle non-supported devices properly.
Addressed compiler warnings and handle non-supported devices properly.

acfloria/Firmware,acfloria/Firmware,krbeverx/Firmware,PX4/Firmware,dagar/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,darknight-007/Firmware,mje-nz/PX4-Firmware,mcgill-robotics/Firmware,krbeverx/Firmware,Aerotenna/Firmware,jlecoeur/Firmware,jlecoeur/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,acfloria/Firmware,dagar/Firmware,darknight-007/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,krbeverx/Firmware,jlecoeur/Firmware,PX4/Firmware,mcgill-robotics/Firmware,krbeverx/Firmware,Aerotenna/Firmware,Aerotenna/Firmware,dagar/Firmware,jlecoeur/Firmware,mcgill-robotics/Firmware,jlecoeur/Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,acfloria/Firmware,mcgill-robotics/Firmware,PX4/Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,acfloria/Firmware,Aerotenna/Firmware,dagar/Firmware,PX4/Firmware,darknight-007/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,darknight-007/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,darknight-007/Firmware,PX4/Firmware,PX4/Firmware,jlecoeur/Firmware,dagar/Firmware,acfloria/Firmware