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Introduction to Keil-MDK-ARM Updated:Thursday, February 15, 2018

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  • IntroductiontoKeil-MDK-ARMUpdated:Thursday,February15,2018

  • Outline

    • WhatareARMtools• WhatisKeil• WhatareKeil Components• InstallingKeil Lite• CreateanewprojectusingKeil• Steppingthroughasimpleassemblyprogram• Understandinganassemblyprogram

  • WhatisKeil MDK-ARM?

    • Keil isaCortex-MDevelopmentplatform• Therearemanyotherplatforms

    • MDK-ARMstandsforMicrocontrollerDevelopmentKitforARM• Keil’s latestversionis5:www2.keil.com/mdk5(watchthevideo)• TherearemanycomponentstoKeil MDK-ARM• uVision IntegratedDevelopmentEnvironment(IDE)• Compilationtools(C/C++)• Assembler• Linkunities(usedtoprogramthephysicaldevice)• Simulator(whennohardwareisavailable)• Etc.

    AsidefromKeil therearemanyotheropensourceandcommercialtools:https://en.wikipedia.org/wiki/List_of_ARM_Cortex-M_development_tools

  • WhatisKeil MDK-ARM?

  • Keil MDK-ARMEditionsSeehttp://www.keil.com/mdk5/selector

    • MDK-ProfessionalcontainsallfeaturesofMDK-Plus.Inaddition,itsupportsIPv4/IPv6dual-stacknetworking,IoT connectivity,andaUSBHoststack.Onceavailable,MDK-ProfessionalincludesARMv8-MarchitecturesupportandalicenseforDS-MDK.• MDK-PluscontainsmiddlewarelibrariesforIPv4networking,USBDevice,FileSystem,andGraphics.ItsupportsARMCortex-M,selectedARMCortex-R,ARM7,andARM9processorbasedmicrocontrollers.• MDK-Cortex-MsupportsCortex-Mprocessor-basedmicrocontrollers.• MDK-Lite iscodesizerestrictedto32KByte andintendedforproductevaluation,smallprojects,andtheeducationalmarket.

  • CompilationFlowinKeil

  • CortexMicrocontrollerSoftwareInterfaceStandard(CMSIS)• CMSISprovidestheinterfacebetweenthemicrocontrollerperipheralsandtheMDKMiddleware• ForourprojectsweneedtohaveCMSISCOREandDEVICESStartupfilesaddedtoourcode

  • InstallingKeil-1

    • visitwww2.keil.com/mdk5/• DownloadMDK-Lite• Afterthedownloadhasfinished,doubleclickthe .exetoinstalltheprogram.• Once installed,clickfinish• Thepackinstallerwillload,andittakessometimeforittofindallthenewpackagesavailableforinstall.• Allowthepackinstallertofinishsearching(shownbytheactionbaratthebottomofthescreen)

    visitwww2.keil.com/mdk5/

  • InstallingKeil - 2

    • OntheleftsideofthewindowunderDevices,clicktoexpandSTMicroelectronics.

    • Find STM32F4Seriesandexpandit

    • DoubleclickonSTM32F401REanditshouldaddittothepackslistontherightside.

    • ClickallthebuttonsthatsayInstallorUpdatetogetallthefeatures/packagesthatKeil offers.

  • StartANewProject• OpenKeil uVision 5fromyourWindows• Makesureallprojectsareclosed:

    • Projectà CloseProject• ClickonProjectà newuVision Project…• InthewindowclickonNewFolder[1]• Typethenameoftheproject:ASM_NewProject [2]• Gotothenewfolderthatyoujustcreated[3]

    [1]

    [2]

    [3]

  • StartANewProject-2• TheSelectDevicewindowpopsup• Inthesearchtype:STM32F401RETx• Clickonthedevice(STM32F401RETx)thatshowedupandthenclickOK

  • StartANewProject-3• AtthispointtheManageRunwindowpopsup• CHECKCMSISà COREandDEVICEàSTARTUPboxes–notethatthecolorchanges• ThenclickOK

    IfDevicesAreMarkedasX

  • StartANewProject-4• AttispointyourProjectwindowshouldshowthe

    CMSISandDEVICE– thesearetheCMSISsysteminitializationfilesandstartupfilesinorderfortheRUNTIMEtooperate [1]

    • ClickontheOPTIONSFORTARGET[2]

    • ClickonDEBUGtab[3]

    • CHECKtheSIMULATOR[4]

    • ClickonOK

    • InthePROJECTwindowclickonSourceGroup1andselectADDNEWITEM….

    • Inthenewwindowselect

    [1]

    [2][3][4]

  • StartANewProject-5• InthePROJECTwindowclickonSourceGroup1and

    selectADDNEWITEM….

    • InthenewwindowselectASMfiles

    • ThentypethenameoftheASMfile:ASM_NewProject.s

    • ClickonADD

  • StartANewProject-6• IntheprojectwindowclickonASM_NewProject.s

    undertheSourceGroup1folder

    • Openthefile

    • Typeinthefollowingcode

    • Savethefile

    • PressF7andmakesuretherearenoerrors(asshownbelow)

    • Clickonthedebugbutton– shownabove

    • MakesuretherearenoerrorsandstepthroughthecodeasyouclickontheSTEPINbuttonshownabove

    ***UsingCompiler'V5.06update5(build528)',folder:'C:\Keil_v5\ARM\ARMCC\Bin'Build target'Target1'assemblingchange_register.s...linking...ProgramSize:Code=188RO-data=404RW-data=0ZI-data=1536".\Objects\NewProject.axf"- 0Error(s),0Warning(s).BuildTimeElapsed:00:00:00

  • StartANewProject-7• Setupyourprojectwindowsareshownbelow

    • Todoso,clickonVIEWandselecttheappropriatewindow

    FILESAssembly&Startup)

    Disassembler

    REGISTERS

    PROJECT

    MEMORYCOMMAND

  • Let’sExamineTheCode• Whatarethevaluesoftheregistersafteryoustepthroughtheentirecode?• WhatisthevalueofP?• Whathappensifwechange#PtoPandremove#?• IntheDisassemblernotehowthecodesaredisplayed.Whatisthestartingmemorylocationfortheassemblycode?

    • WhatistheOPCODEforMOVinstruction?• WhatistheOPCODEforADDinstruction?• Howlarge(intermsofbits)isregisterR0?• Whatexactlythefollowingcommandachieves?ADDr2,r0,r1

  • Example1:Addition

  • DoThis:

    • Trythefollowingandshowthevaluesoftheregistersaftertheprogramiscompleted:

    MOVr1,#Q;loadQintor1MOVr2,#R;loadRintor2MOVr3,#S;loadSintor3ADDr0,r1,r2;AddQtoRADDr0,r0,r3;AddSto(Q+R)

  • References

    • TheDefinitiveGuidetoARM®Cortex®-M3andCortex®-M4Processors– Chapter15

  • IfYouExperienceAnyIssues….

  • PotentialIssues

    IfYouHavethiserror

  • IfYouGetCompilingIssue• AttispointyourProjectwindowshouldshowthe

    CMSISandDEVICE– thesearetheCMSISsysteminitializationfilesandstartupfilesinorderfortheRUNTIMEtooperate [1]

    • ClickontheOPTIONSFORTARGET[2]

    • ClickonDEBUGtab[3]

    • CHECKtheSIMULATOR[4]

    • ClickonOK

    • InthePROJECTwindowclickonSourceGroup1andselectADDNEWITEM….

    • Inthenewwindowselect

    [1]

    [2][3][4]

  • IfDevicesAreMarkedasXRe-dothissection


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