B876214单片机.docx

B876214单片机.docx

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B876214单片机

GuangdongUniversityofEducation

BTECCenter

Program:

Electrical/ElectronicEngineering（Electronic）

UnitTitle:

MicroprocessorSystems

UnitNo:

10

AssignmentTitle:

DesignTwoApplicationsbasedonaMicrocontroller

AssignmentNo.:

1001

IssueDate:

March1，2011

SubmissionDeadline:

Part1:

May1,2011

Assessor/Tutor:

SunnyYao

InternalVerifier:

RickyZhang

Student:

JianfengWu

Student’sReg.No:

B876214

NOTESTOSTUDENTS

●Checkcarefullythesubmissiondateandtheinstructionsgivenwiththeassignment.Lateassignmentswillnotbeaccepted.

●Ensurethatyougiveyourselfenoughtimetocompletetheassignmentbytheduedate.

●Donotleavethingssuchasprintingtothelastminute–excusesofthisnaturewillnotbeacceptedforfailuretohand-intheworkontime.

●Youmusttakeresponsibilityformanagingyourowntimeeffectively.

●Ifyouareunabletohandinyourassignmentontimeandhavevalidreasonssuchasillness,youmayapply（inwriting）foranextension.

●Whenyourefertotheworkofotherauthorsinyourassignment,youmustpracticecitationbyfollowingHarvardSystemforReferencing.

●Ifyouarecaughtplagiarizing,youcouldhaveyourgradereducedtozero,oratworst,youcouldbeexcludedfromthecourse.

STUDENT’SDECLARATION:

Iconfirmthatthisisallmyownwork.

Student’sSignature:

JianfengWu

ASSESSMENTforPart1

Grade

Criteria/

Descriptors

Evidence

Feedback

Assess

PassAssessment

2.Producesoftwareforamicroprocessor-basedsystem

2.1Designsoftwaretoagivenspecificationusingastructureddesigntechnique

※Analgorithmblockflowdiagramispresented.

2.2Writeprogramstoimplementdesignsusinganappropriatecomputerlanguage

※Anexecutableprogramthatmeetsthebasicrequirementsisedited.

2.3Testsoftwaretoensureitmeetsthegivenspecification

※Runningresultmeetsthegivenspecification

GradingAssessment

M1identifyandapplystrategiestofindappropriatesolutions

Aneffectiveapproachtostudyandresearchhasbeenapplied

※Canuseproperapplicationsoftwarecorrectly.

M2selectandapplyappropriatemethods/techniques

Thedesignofmethods/techniqueshasbeenjustified

※Astructureddesigntechniqueisusedverywell.

M3presentandcommunicateappropriatefindings

Thecommunicationisappropriateforfamiliarand

unfamiliaraudiencesandappropriatemediahavebeenused

※Makealectureforyourapplicationdesigninclassthroughmediaandhavedoneitveryclearly.

D1usecriticalreflectiontoevaluateownworkandjustifyvalidconclusions

Thevalidityofresultshasbeenevaluatedusingdefinedcriteriaandselfcriticismofapproachhastakenplace

※Theresulthasmetrequirementgivenandthereisevaluationinyourassignmentthatexplainsprogram’sadvantagesanddisadvantages.

D2takeresponsibilityformanagingandorganizingactivities

Theimportanceofinterdependencehasbeenrecognizedand

achieved

※Doyourassignmentwithoutotherperson'shelp.

D3demonstrateconvergent/lateral/creativethinking

Innovationandcreativethoughthavebeenapplied

※Proposedacreativethinkinginyourassignment.

Assessor’sadditionalcomments

Assessor’ssignature:

Student’sFeedback

Student’ssignature:

Notes:

AssignmentDescription

Scenario

RecentlyAtmelCompanyhassuccessfullydevelopedanewmorepowerfulmicrocontroller（AT89S51）.TheAT89S51isalow-power,high-performanceCMOS8-bitmicrocontrollerwith4KbytesofIn-systemProgrammableFlashmemory.ThedeviceismanufacturedusingAtmel’shigh-densitynonvolatilememorytechnologyandiscompatiblewiththeindustry-standard80C51instructionsetandpinout.Theon-chipFlashallowstheprogrammemorytobereprogrammedin-systemorbyaconventionalnonvolatilememoryprogrammer.Bycombiningaversatile8-bitCPUwithIn-SystemProgrammableFlashonamonolithicchip,theAtmelAT89S51isapowerfulmicrocontrollerwhichprovidesahighly-flexibleandcost-effectivesolutiontomanyembeddedcontrolapplications.Inordertoincreasethenewproductmarketpromotion,thecompanydecidestoorganizeanewsconferenceforit.Youareassignedtodesignanadvertisingdemosystemtodisplaytheconvenientandpowerfulapplicationdevelopmentfunctionofthisnewproduct.Thesystemyoudesignmustbeabletodemonstrateatleasttwoapplicationsbasedonthistypeofmicrocontroller.

Part1（ThispartmustbeaccomplishedbeforeMay1,2011）:

Directlyusetheinput/outputportsofthismicrocontrollertodoanapplicationsystem.Pleaseprovideyourdesignreportswhichmustcontainthefollowingpoints:

Task:

1.（PassCriterion2.1）Designsoftwaretoagivenspecificationusingastructureddesigntechnique.Designanalgorithmblockflowdiagramusingastructureddesigntechniqueforyourdevelopment.

2.（PassCriterion2.2）Writeprogramstoimplementdesignsusinganappropriatecomputerlanguage.Pleasewritetheprograminassemblerorclanguageaccordingtothealgorithmblockflowdiagramabove.

3.（PassCriterion2.3）Testsoftwaretoensureitmeetsthegivenspecification.Testtheprogramuntilitmeetsthegivenspecification.Pleaseprovidetheschematiccircuitofyourdesignandadetaileddescriptionoftheimplementationphenomenonofyourprogramintextandgraphicsortables.

MyReport

1Summarize

1.1Background

TheAT89S51isalow-power,high-performanceCMOS8-bitmicrocontrollerwith4KbytesofIn-systemProgrammableFlashmemory.Sothisdesignisbasedonit.Thisdesignisastudyonrotatinglightsandalarm.

1.2Designmethod

ThedesignisabuzzeralarmwithLEDlightstoachievewateron.Itshardwaremainlyconsistsoffourcomponents,aAT89C51microcontrollerchip,aswitchbutton,abuzzer,andLEDlights.

EightLEDlightsthroughtheP2portisconnectedwiththeAT89C51.TheSOUNDERthroughtheP3.0portisconnectedwiththeAT89C51.SwitchcontrolofthecircuitthroughP1.7.

Whentheswitchisopened,thecircuitwillbepowered.LEDlightsandthebuzzerrang.

2Overallsystemprogramandhardwaredesign

Intherecentresearch[梁炳东，2006]foundtheseinformation.

2.1C51MCUtubefeetandcharacteristics

IntegratedonasinglechipCPU,memory,RAM,ROMandinputandoutputinterfacecircuit,thechipusedtobeknownasthechipmicro-computer,referredtoasmicrocontrollers.INTELMCS-51microcontrollerisintroducedin1980,high-end8-bitmicrocontroller.Itstypicalproducts:

8051,8031,8751,80C51,80C31,87C51.

AT89C51pindiagram

2.2Buzzer

Buzzerisanintegratedstructureofanelectronicsounder,DCvoltagepowersupply.Buzzermainlydividesintothepiezoelectricbuzzerandsolenoidbuzzerstyletwokinds.

Buzzerschemes

2.3Hardwareconnectiondiagram

Originalrequirements:

1×AT89C51,8×LED-RED,9×RES,1×SOUNDER,1×SW-SPDT

Hardwareconnectiondiagramasfollow:

Fig2.3

3SoftwareDesign

Intherecentresearch[李学礼，2008]foundtheseinformation.

3.1flowdiagram

Blockflowdiagramasfollow:

Intherecentresearch[梁炳东，2009]foundtheseinformation.

3.2Themainprogramsoftware

ORG00H

MAIN:

MOVP2,#00H

MOVP3,#00H

JBP1.7,MAIN/*Determinewhetherthealarm*/

MOVR2,#100

MOVA,#01H

B1000:

/*Havelow/highrate*/

CLRP3.0

LCALLDL0D5ms/*Delay*/

SETBP3.0/*Buzzerrang*/

LCALLDL0D5ms

DJNZR2,B1000/*DetermineR2=100*/

B500:

/*Havelow/highrate*/

CLRP3.0

LCALLDL0D5ms/*Delay*/

LCALLDL0D5ms

SETBP3.0/*Buzzerrang*/

LCALLDL0D5ms

LCALLDL0D5ms

JBP1.7,MAIN

DJNZR2,B500

MOVP2,A/*LEDlight*/

RLA/*otherLEDlight*/

SJMPB1000

DL0D5ms:

/*Delay*/

MOVR7,#250

DL:

DJNZR7,DL

RET

END

4Proteussoftwaresimulations

Theimplementationphenomenon

4.1Switchishigh:

4.2Switchislow

WhenP1.7ishigh,P2andP3portislow.WhenP1.7islow,P2andP3ishigh,theLEDlightandtheBuzzerrang.

5Summarize

5.1Myprogramadvantagesanddisadvantages

Advantages:

Myprogramissimple,shouldunderstand.

Disadvantages:

LEDandbuzzerprogramcannotachievesynchronization.Actualresultsandthedesiredoutcomehavealittledifferent.

Referencetemplates:

Books:

李学礼，2008.《基于Proteus的8051单片机实例教程》.第二版.北京：

电子工业出版社

梁炳东，2009.《单片机原理与应用》.第一版.北京：

人民邮电出版社