@startuml

participant RADIO
participant Driver

      -> State: WaitingRxFrame
      
RADIO  -> Driver: EV: FRAMESTART
activate RADIO
Driver -> Mutex: lock
activate Mutex
Driver -> State: RxHeader
Driver -> Driver:  Check frame length: < ACK_LENGTH

Driver  -> Driver: stopSendingAck(WaitingRxFrame)

RADIO   -> Driver: EV: DISABLED
Driver  -> RADIO:  TASK: RXEN
Driver  -> Mutex:  unlock
deactivate Mutex
Driver  -> RADIO:  clear_event(DISABLED)
     

@enduml