Arduino: 1.8.13 (Linux), Board: "Arduino Leonardo" sketch/oXs_general.cpp:196:3: warning: #warning Timer 2 not finished (may not be present on this CPU) [-Wcpp] #warning Timer 2 not finished (may not be present on this CPU) ^~~~~~~ sketch/oXs_general.cpp:205:3: warning: #warning Timer 2 not finished (may not be present on this CPU) [-Wcpp] #warning Timer 2 not finished (may not be present on this CPU) ^~~~~~~ sketch/oXs_out_frsky.cpp: In function 'void __vector_17()': oXs_out_frsky.cpp:1738:21: error: 'PCIF2' was not declared in this scope PCIFR = ( 1< Voreinstellungen aktiviert wäre.