SNIP_CLASSIC_FRIF_SECTION_7_3_6_Timers

7.3.6 Timers The state machine description uses the following timers for each FlexRay cluster: Timer Description t1 The timer t1 models the delay of clearing the coldstart inhibit mode (i.e. calling FrIf_Allow Coldstart). The duration of this timer can be statically configured with the configuration parameter Fr SMDurationT1. t2 The timer t2 models the time difference after which the FrSM will repeat the startup of the FlexRay cluster. The duration of this timer can be statically configured with the configuration parameter Fr SMDurationT2. t3 The timer t3 supervises the transition to FullCom. The duration of this timer can be statically configured with the configuration parameter FrSMDurationT3. t4 The timer t4 ensures that a dual channel node will eventually clear its coldstart inhibit bit and become a leading coldstarter. t_TrcvStdbyDelay The timer t_TrcvStdbyDelay models the time difference after which the FrSM will reinitialize the FlexRay communication controllers and set the transceivers into STANDBY mode when FlexRay communication is stopped. Table 7.7: FrsM timers [SWS_FrSM_00142] ⌈If the configuration parameter FrSMDurationT1 is set to 0, timer t1 shall not be started. Instead, the call of FrIf_AllowColdstart shall immediately follow the call of FrIf_StartCommunication.⌋ [SWS_FrSM_00143] ⌈If the duration FrSMDurationT2 of timer t2 is set to 0, the startup of the FlexRay cluster shall not be supervised. Note, that no assumption is made whether any of the timers is implemented in software or hardware.⌋ [SWS_FrSM_00209] ⌈If the configuration parameter FrSMTrcvStdbyDelay is not configured or set to 0, timer t_TrcvStdbyDelay shall not be started. Instead, the transition from state FRSM_HALT_REQ to FRSM_READY shall be executed immediately.⌋