PWM_CDD_MDD

Module –

High-Level Description

Non-AUTOSAR PWM driver required to perform EPS motor control PWM profiles.

Figures

Component Diagram

This diagram shows all data that is shared between functions within the module.

No data sharing

Diagram – Function (Per1)

None (For more refer section 6)

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

Constant Name	Resolution	Value	Software Segment
t_S_SinePhsToGndTbl_Cnt_u0p16[2049]	2-16		None

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,

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

1. FPM_FloatToFixed_m()

2. FPM_FixedToFloat_m()

3. Limit_m()

4. Max_m()

5. Min_m()

6. CDD_Read_PhaseAdvanceFinal_Rev_u0p16()

Data Hiding Functions

1. None

Global Functions/Macros Defined by this Module

Global Function #1

Description

Applies the offsets needed for MtrElecMech Polarity Setting

Global Function #2

Description

Local Functions/Macros Used by this MDD only

Local Macros are defined in PWMCDD_Cfg.h file as the return values/calculation of return values are more project specific

Local Function #1

Description

Generates the next PWM Period

Local Function #2

Description

Applies the dead time compensation

Local Function #3

Description

Calculates ModIndx for each phase

Local Macro #1

Description

Converts phase advance final from count units to rev units. (Units type conversion)

Local Macro #2

Description

Reads the Motor position global variable and assign it to “CorrectedMtrPos_Rev_T_u0p16”

Local Macro #3

Description

Reads the Commutation offset and assign it global variable and assign it to “CommOffset_Cnt_T_u16”

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: _Init

Design Rationale

None

Module Outputs

None

Module Internal

CDD_DutyCycleSmall_Cnt_G_u16[CDD_CDDDataAccessBfr_Cnt_G_u16] = 0U;

CDD_SeedPWMDither_Cnt_M_u16 = d_SeedInitial_Cnt_u16

Periodic Functions

Per: _Per1

Design Rationale

None

Program Flow Start

N/A

Store Module Inputs to Local copies

None

Processing of function

Store Local copy of outputs into Module Outputs

None

Program Flow End

N/A

Fault Recovery Functions

None

Shutdown Functions

None

Interrupt Functions

None

Serial Communication Functions

SCom: _Scom_

Design Rationale

None

Program Flow Start

N/A

Store Module Inputs to Local copies

None

Processing of function

Store Local copy of outputs into Module Outputs

None

Program Flow End

N/A

Execution Requirements

Execution Sequence of the Module

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 defined in GlobalMacro.h are not unit tested.

Revision Control Log

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