SNIP_CLASSIC_ECUM_SECTION_8_5_3_3_EcuM_AL_SwitchOff

8.5.3.3 EcuM_AL_SwitchOff [SWS_EcuM_02920] Definition of configurable interface EcuM_AL_SwitchOff Upstream requirements: SRS_ModeMgm_00006 ⌈ Service Name EcuM_AL_SwitchOff Syntax void EcuM_AL_SwitchOff ( void ) Service ID [hex] 0x3E Sync/Async Synchronous Reentrancy Non Reentrant Parameters (in) None Parameters (inout) None Parameters (out) None Return value None Description This callout shall take the code for shutting off the power supply of the ECU. If the ECU cannot unpower itself, a reset may be an adequate reaction. Available via EcuM_Externals.h ⌋ The ECU Manager module invokes EcuM_AL_SwitchOff as the last activity in the Off PostOS Sequence (see section 7.4.2 Activities in the OffPostOS Sequence). Note: In some cases of HW/SW concurrency, it may happen that during the power down in EcuM_AL_SwitchOff (endless loop) some hardware (e.g. a CAN transceiver) switches on the ECU again. In this case the ECU may be in a deadlock until the hardware watchdog resets the ECU. To reduce the time until the hardware watchdog fixes this deadlock, the integrator code in EcuM_AL_SwitchOff as last action can limit the endless loop and after a sufficient long time reset the ECU using Mcu_Perform Reset().