Assist_Firewall_MDD

Module --

High-Level Description

This module limits the output from the Assist module according to safety requirements.

Figures

Component Diagram

Variable Data Dictionary

For details on module input / output variable, refer to the Data Dictionary for the application. Input / output variable names are listed here for reference.

Module Internal Variables

This section identifies the name, range and resolutions for module specific data created by this module. If there are no range restrictions on the variable, the term “FULL” is placed into the table for legal range.

User defined typedef definition/declaration

This section documents any user types uniquely used for the module.

Constant Data Dictionary

Calibration Constants

This section lists the calibrations used by the module. For details on calibration constants, refer to the Data Dictionary for the application.

Program(fixed) Constants

Embedded Constants

All embedded constants whose values are provided in Eng units will be evaluated to the equivalent counts by using the FPM_InitFixedPoint_m() macro within the #define statement.

Local

Global

This section lists the global constants used by the module. For details on global constants, refer to the Data Dictionary for the application.

Module specific Lookup Tables Constants

Functions/Macros used by the Sub-Modules

Library Functions / Macros

The library and functions / Macros that are called by the various sub modules are identified below,

1. LPF_KUpdate_f32_m

2. LPF_OpUpdate_f32_m

3. HPF_KUpdate_f32_m

4. HPF_OpUpdate_f32_m

5. BilinearXMYM_s16_s16XMs16YM_Cnt

6. TableSize_m

7. FPM_FloatToFixed_m

8. FPM_FixedToFloat_m

9. DiagPStep_m

10. DiagNStep_m

11. Rte_Call_NxtrDiagMgr_SetNTCStatus

Data Hiding Functions

1. None

Global Functions/Macros Defined by this Module

None

Local Functions/Macros Used by this MDD only

None

Software Module Implementation

Runtime Environment (RTE) Initial Values

This section lists the initial values of data written by this module but controlled by the RTE. After RTE initialization, the data in this table will contain these values.

Initialization Functions

Init: _Init1

Design Rationale

An initialization function is required to initialize K for each of the filters.

Module Outputs

None

Module Internal

None

Initialize Filters

Periodic Functions

Per: _Per1

Design Rationale

None

Program Flow Start

Rte_Call_AssistFirewall_Per1_CP0_CheckpointReached()Store Module Inputs to Local copies

BaseAssistCmd_MtrNm_T_f32 = Rte_IRead_AssistFirewall_Per1_BaseAssistCmd_MtrNm_f32()

HighFreqAssist_MtrNm_T_f32 = Rte_IRead_AssistFirewall_Per1_HighFreqAssist_MtrNm_f32()

HwTorque_HwNm_T_f32 = Rte_IRead_AssistFirewall_Per1_HwTorque_HwNm_f32()

HysteresisComp_MtrNm_T_f32 = Rte_IRead_AssistFirewall_Per1_HysteresisComp_MtrNm_f32()

VehicleSpeed_Kph_T_f32 = Rte_IRead_AssistFirewall_Per1_VehicleSpeed_Kph_f32()

AsstFWPstepNstep_Cnt_T_str.PStep = k_AsstFWPstep_Cnt_u16

AsstFWPstepNstep_Cnt_T_str.NStep = k_AsstFWNstep_Cnt_u16

AsstFWPstepNstep_Cnt_T_str.Threshold = t_AsstFWPstepNstepThresh_Cnt_u16[1]

AbsHwTrq_HwNm_T_u8p8 = FPM_FloatToFixed_m(Abs_f32_m(HwTorque_HwNm_T_f32), u8p8_T)

DefeatAsstTblSvc_Cnt_T_lgc = Rte_IRead_AssistFirewall_Per1_Defeat_AsstTbl_Service_Cnt_lgc()

MECCounter_Cnt_T_enum = Rte_IRead_AssistFirewall_Per1_MEC_Counter_Cnt_enum()

Sum and Filter Inputs

Determine Saturation Bounds and Perform Limiting

Determine Active State and Output

Store Local copy of outputs into Module Outputs

AsstFWUprBound_MtrNm_D_f32 = UprBound_MtrNm_T_f32

AsstFWLwrBound_MtrNm_D_f32 = LwrBound_MtrNm_T_f32

AsstFWUprBoundFilt_MtrNm_D_f32 = UprBoundFilt_MtrNm_T_f32

AsstFWLwrBoundFilt_MtrNm_D_f32 = LwrBoundFilt_MtrNm_T_f32

AsstFWSumInput_MtrNm_D_f32 = SumInput_MtrNm_T_f32

AsstFWLowFreqInput_MtrNm_D_f32 = LowFreqInput_MtrNm_T_f32

AsstFWLowFreqLimited_MtrNm_D_f32 = LowFreqLimited_MtrNm_T_f32

AsstFWActiveRaw_Uls_D_f32 = AsstFWActiveRaw_Uls_T_f32

Rte_IWrite_AssistFirewall_Per1_CombinedAssist_MtrNm_f32(CombAsstSV_MtrNm_M_f32)

Rte_IWrite_AssistFirewall_Per1_AsstFirewallActive_Uls_f32(AsstFWActive_Uls_T_f32)

Program Flow End

Rte_Call_AssistFirewall_Per1_CP1_CheckpointReached()

Fault Recovery Functions

None

Shutdown Functions

None

Interrupt Functions

None

Serial Communication Functions

Execution Requirements

Execution Rates for sub-modules called by the Scheduler

This table serves as reference for the Scheduler design

Execution Requirements for Serial Communication Functions

Memory Map Definition Requirements

Sub Modules (Functions)

This table identifies the software segments for functions identified in this module.

Local Functions

This table identifies the software segments for local functions identified in this module.

Known Issues / Limitations With Design

1. INLINE functions in GlobalMacro.h are not unit tested.

Revision Control Log