SNIP_CLASSIC_MODEMANAGEMENTGUIDE_SECTION_3_3_1_ECU_Mode_Handling

3.3.1 ECU Mode Handling ECU Mode Handling is introduced with AUTOSAR 4.2.1 in BSW modules ECU State Manager with flexible state machine and BSW Mode Manager. ECU State Manager provides a common interface to SW-Cs to request and release the Modes RUN and POST_RUN. The ECU State Manager (EcuM) does not contain an own state machine. It shall receive state notifications from BswM and propagate these to the RTE. The following API is provided for ECU Mode Handling: Purpose: Via this interface EcuM notifies BswM about the current Mode of ECU Mode. Modes: modeGroup EcuM_StateType { ECUM_STATE_STARTUP, ECUM_STATE_APP_RUN, ECUM_STATE_APP_POST_RUN, ECUM_STATE_SHUTDOWN, ECUM_STATE_SLEEP } EcuM_CurrentState: Set by EcuM using the interface BswM_EcuM_CurrentState(). This state is set by EcuM when the RTE has given its feedback. RUNRequested: Set by EcuM using the interface BswM_EcuM_RequestedState() depending on the result of the RUN Request Protocol. POSTRUNRequested: Set by EcuM using the interface BswM_EcuM_RequestedState() depending on the result of the RUN Request Protocol. The following BswM rules show an example regarding the interaction between EcuM and BswM for ECU Mode Handling. Note that the following BswM rules are not sufficient for a complete system. Further BswM rules will be needed to cover NvM, Wakeup Handling and Diagnostics for example. See chapter 4 for a complete example.