WatchDogDRIVERIMPL.docx

WatchDogDRIVERIMPL.docx

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WatchDogDRIVERIMPL

CONFIDENTIAL

TJU—IFXAutomotiveElectronicJointLaboratory

StateKeyLaboratoryofEngines

TianJinUniversity,China

GEMS–K1

Watchdogdriverimplementationdocument

Revisionhistory

Version

By

Modifications

V0.1,6thNovember2008

Hoangchao.Zhang

Creation

Summary

Revisionhistory2

Summary3

1Introduction4

1.1Overview4

1.2Reference5

2.Typedefinition6

3GlobalVariable7

4FunctionDefinitions8

4.1SCU_vInit8

4.2SCU_vServiceWDT9

4.3SCU_vDisableWDT9

4.4SCU_vEnableWDT9

5ResourcesConfiguration10

5.1PeriperalConfig10

5.2InterruptConfig10

6CompileEnvironment10

1Introduction

1.1Overview

ThisdocumentdescribestheimplementationofthewatchdogdrivertobedevelopedintheframeoftheGEMS-K1project.Itisbasedonthewatchdogspecificationdocument.

ThesafetymonitordriverisimplementedbytricoreofTC1766

ThesoftwareisconfiguredtoalwaysservicetheWatchdogTimerbeforeitoverflows,theWatchdogTimerwillTime-outiftheprogramdoesnotprogressproperly.TheWatchdogTimeralsotimesoutifthesoftwareerrorwasduetohardware-relatedfailures.Thisoperationpreventsthecontrollerfrommalfunctioningforlongerthanauser-specifiedtime.

1.2Reference

[1]WatchDog_DRIVER_SPEC.doc

[2]

2.Typedefinition

Type

Description

Range

3GlobalVariable

Thischapterdescribestheglobalvariableusedbyscheduler.

Varialbes

Type

Description

4FunctionDefinitions

4.1SCU_vInit

Syntax

voidSCU_vInit（void）

Parameters

none

Return

none

Notification

Description

Thisfunctioninitializestheregistersrelatedtowatchdogdriver.

Indetailsthefunctionconfiguresthefollowing:

∙Configurethewatchdogmaxserviceinterval

∙initializestheregistersrelatedtowatchdog

Reentrancy

No

Remarks

4.2

SCU_vServiceWDT

Syntax

voidSCU_vServiceWDT（ushortusReload,ubyteubPassword）

Parameters

ushortusReload//reloadvalueforthewatchdogtimer

ubyteubPassword//password

Return

None

Notification

Description

Servicewatchdogtoavoidoverflowofwatchdog

Reentrancy

No

Remarks

4.3SCU_vDisableWDT

Syntax

voidSCU_vDisableWDT（void）

Parameters

None

Return

None

Notification

Description

Disablewatchdog

Reentrancy

No

Remarks

4.4SCU_vEnableWDT

Syntax

voidSCU_vEnableWDT（void）

Parameters

None

Return

None

Notification

Description

enablewatchdog

Reentrancy

No

Remarks

5ResourcesConfiguration

5.1PeriperalConfig

Source

Description

5.2InterruptConfig

Source

SRN

TOS

Priority

Name

Description

6CompileEnvironment

CompileTool:

TaskingVX-ToolsetforTricorev2.2r3