ETCdriverimplement0908v10.docx

ETCdriverimplement0908v10.docx

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ETCdriverimplement0908v10

ETCDriverImplementDocument

TianjinUniversity—InfineonAutomotiveElectronicJointLaboratory

StateKeyLaboratoryofEngines

TianJinUniversity,China

Revisionhistory

Version

By

Modifications

V0.1,08thJuly2008

WeiZhou

Creation

Contents

1Introduction4

1.1Overview4

1.2Reference4

2.Typedefinition5

3GlobalVariable6

4FunctionDefinitions7

4.1ETC_Init7

4.2ETC_DSBL8

4.3ETC_ENBL9

4.4ETC_SetIN2H10

4.5ETC_SetIN2L10

4.6ETC_IN1PWM10

4.7ETC_PWM11

4.8ETC_PID11

5ResourcesConfiguration12

5.1PeriperalConfig12

5.2InterruptConfig12

6CompileEnvironment13

1Introduction

1.1Overview

ThisdocumentdescribestheimplementationsoftheETCdrivertobedevelopedintheframeoftheGEMS-K1project.

TheETCdriverconfigurescontroltheETCaccuratelyandquickly，thecontrollerisbuiltbyPIDwhichisdividedintotwoparts,soitcanbemorebettersatisfiedthenon-linearsystem.

1.2Reference

[1]ETC_testSpec_20080908_v1.0_LB.doc

[2]ETC_driver_specification_20080908_v1.0.doc

2.Typedefinition

Type

Description

Range

3GlobalVariable

Thischapterdescribestheglobalvariable.

Varialbes

Type

Description

LastDutyCycle

float

Savetheabsolutereturn-valueofETC_PIDfunctioninthelastcycleanditisusedintheETC_PWMfunctionwhichcalculatesPWMsignal.

CurDutyCycle

float

Savetheabsolutereturn-valueofETC_PIDfunctioninthecurrentcycle

Direction

uint8

SavethedirectionvalueoftheETCanditisusedintheETC_PWMfunction.

ETC_PID_Par_ram[10][3]

float

ItisusedtocontrolthePIDcontroller.

ETC_BasDutCyc_CW[10]

float

ItisusedintheKWP2000function.

ETC_BasDutCyc_CCW[10]

float

ItisusedintheKWP2000function.

4FunctionDefinitions

4.1ETC_Init

Syntax

voidETC_Init（void）;

Parameters

None

Return

None

Notification

Description

Thisistheinitializationfunctionofthetimer.

Reentrancy

No

Remarks

4.2

ETC_DSBL

Syntax

voidETC_DSBL（）

Parameters

None

Return

None

Notification

Description

ThisfunctiondisablestheETCcontroller.

Reentrancy

No

Remarks

4.3

ETC_ENBL

Syntax

voidETC_ENBL（）

Parameters

none

Return

none

Notification

Description

ThisfunctionenablestheETCcontroller.

Reentrancy

No

Remarks

4.4

ETC_SetIN2H

Syntax

voidETC_SetIN2H（void）

Parameters

none

Return

none

Notification

Description

ThisfunctioncontrolsthedirectionofthePWMoutput（positivedirection）.

Reentrancy

No

Remarks

4.5ETC_SetIN2L

Syntax

voidETC_SetIN2L（void）

Parameters

none

Return

none

Notification

Description

ThisfunctioncontrolsthedirectionofthePWMoutput（negativedirection）.

Reentrancy

No

Remarks

4.6ETC_IN1PWM

Syntax

voidETC_IN1PWM（floatFre,floatDutyCycle）

Parameters

Fre:

thefrequencyofPWM.

DutyCycle:

thedutyfactorofPWM.

Return

none

Notification

Description

ThisfunctioncontrolsthePWMofthefirstPeriperal.

Reentrancy

No

Remarks

4.7ETC_PWM

Syntax

voidETC_PWM（floatFre,floatDutyCycle,uint8Dir）

Parameters

Fre:

thefrequencyofPWM.

DutyCycle:

thedutyfactorofPWM.

Dir:

thedirectionofthePWM

Return

none

Notification

Description

ThisfunctioncalculatesthecontrolPWMsignalincludingthefrequency,

dutyfactoranddirection.

Reentrancy

No

Remarks

4.8ETC_PID

Syntax

floatETC_PID（floatnumber1,floatETC_Angle,floatMean_Angle）;

Parameters

number1:

theoutputofETCcontrollerinthelastcycle.

ETC_Angle:

theactualthrottlepositionoftheETC.

Mean_Angle:

theoutputthrottlepositionwhichprovidedbyECU.

Return

out:

thecontrolvalueofthrottleposition.

Notification

Description

ThisisthecontrolleroftheElectronicthrottle.

Reentrancy

No

Remarks

5ResourcesConfiguration

TheresourceusedbyETCdriver

5.1PeriperalConfig

Source

Description

P0.14~P0.15

AsETCdriveroutputpins

5.2InterruptConfig

Source

SRN

TOS

Priority

Name

Description

6CompileEnvironment

CompileTool:

TaskingforTricore