SNIP_CLASSIC_FRTP_SECTION_7_4_Initialization_and_shutdown

7.4 Initialization and shutdown [SWS_FrTp_01028] FrTp module state definition ⌈The FrTp module shall have two internal states, FRTP_OFF and FRTP_ON.⌋ [SWS_FrTp_01029] FrTp state variable for initialization detection ⌈The FrTp module shall implement a static status variable FrTpState to denote whether the FrTp module is initialized or not6.⌋ [SWS_FrTp_01106] FrTp state ⌈The FrTpState shall be checked to detect whether FrTp module is initialized or not.⌋ [SWS_FrTp_01030] Default state is OFF after power-up ⌈The FrTp module shall be in the FRTP_OFF state after power up.⌋ [SWS_FrTp_01032] Initialize state to ON after init has been called ⌈The FrTp module shall change to the internal state FRTP_ON when the FrTp has been successfully initialized by the service primitive FrTp_Init.⌋ [SWS_FrTp_01033] Processing of FrTp operations only after initialization ⌈The FrTp module shall perform normal FrTp operation tasks (e.g. segmentation, reassembly etc.) only when the FrTp module is in the FRTP_ON state7.⌋ [SWS_FrTp_01034] Initialization service handling Upstream requirements: SRS_Fr_05088 ⌈The service primitive FrTp_Init shall initialize all global variables of the module and sets all transport protocol connections in a sub-state of FRTP_ON, in which neither transmissions nor receptions are in progress.⌋ [SWS_FrTp_01035] Initialization service clears ongoing connections Upstream requirements: SRS_Fr_05088 ⌈If the FrTp module is in the global state FRTP_ON, a call of the service primitive FrTp_Init shall return the module to an uncritical idle state (idle state = FRTP_ON, but neither transmission nor reception are in progress) and the module shall loose all current connections.⌋ 6This variable is used for development error detection 7This requires that FrTp_Init is called before the normal FrTp functionality is used by the COM-Stack. [SWS_FrTp_01036] OFF state after successful execution of shutdown primitive ⌈The FrTp module shall change to the internal state FRTP_OFF when the service primitive FrTp_Shutdown has been executed successfully.⌋ Figure 7.5: FrTp Initialization and shutdown state diagram