HOLT HI-3110 User manual

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HI‐3110ARINC825CANBusController
EvaluationBoardUsersManual
 9/2/2010
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INTRODUCTION
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TheHoltHI‐3110ARINC825CANBUSControllerEvaluationBoardcanbeusedtoevaluatesome
ofthefeaturesoftheHI‐3110CANControllerwithintegratedtransceiverIC.AFreescale
MC9S12XDT512microcontrollerwith512Kflashand20KRAMcommunicateswiththeHI‐3110
throughtheSPIinterface.TheboardincludesswitchesandLEDstohelpnavigatetheoperating
modesandconfirmdataandstatusinformation.ASerialUARTportisprovidedtoallowdebug
anddatamessagestobesenttoaPCusinganyterminalprogramsuchasHyper‐terminal.

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KITCONTENTS
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ThisUsersManual.
HI‐3110EvaluationBoardandSchematic
HI‐3110DataSheet
RS‐232SerialCable
Softwareversion6
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DemonstrationFeatures
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TransmitModesforStandardandExtendedFrames
ReceiveModes,polledandinterruptdriven
MonitorMode
LoopBackMode
SleepModewithwake‐upfromButtonpressorCANdata
SelectableBitRatesfrom83.3KBPS‐1MBPS
PrintouttheCANbuffers(64)ontheserialconsole
Printoutthestatusregistersontheserialconsole
PrintouttheTransmitHistoryFIFOsontheserialconsole
PrintouttheErrorStatusregistersontheserialconsole
ConfiguringtheINT,STATandGP1andGP2outputs
SPIclockfrequencyselectablefrom625KHz–10MHz.
TestModeforcyclingGPIOsandLEDsasaboardcheck
CANFiltersandMasks
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DemonstrationSetup
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Theboardrequiresa+5V(0.5A)powersupplyappliedtoTP1andGndtoTP6.Therearetwo
waystoconnecttheCANLandCANHsignalstotheCANBus.TheCANLandCANHBussignals
areavailableonthetwotestpointsonthetoprightsideoftheboardorfromtheDB9
connector.
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PowerOnReset
FornormaloperationensureSW2–4(MRST)isintheopenpositionotherwisetheMCUwillbe
heldintheresetstate.ThepurposeofthisMRSTdipswitchistoalloweasyinterfacingofan
externalMCUtotheHI‐3110suchthattheSPIsignalsfromtheFreescaleMCUwillbeforced
intohighimpedancesoasnottoconflictwithanexternalMCU.Fornormaloperationkeepthis
switchopenandusetheRESETbuttontoresettheMCUduringtesting.

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CANBUSBitRateselection
TheBitRatecanbeselectedbyconfiguringthe3dipswitchesinSW1.Theprogramfetchesthe
switchpositionsonceafterapowerup.
S3S2 S1BitRate
0001MBPS
001500KBPS
010250KBPS
011125KBPS
10083.3KBPS
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ModeSelection
Mode2Mode1Mode0 Mode
000 BoardTest
001 TransmitStandardFrames
010 Receiveinpollingmode
011 Monitor
100 LoopBack
101 TransmitExtendedFrames
110 Receiveininterruptmode
111 SerialConsoleCommands
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SW2 OPT1switch
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IfOPT1isintheopenpositionthereceivermodewillcheckthedataframeforanincrementing
32‐bitvalue.Ifthedatadoesn’tmatchtheexpectedvaluefromtheprevioustransmissionitwill
turnontheRedLED8andhalt.
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SW2OPT2switch
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OPT2isalsousedinthereceivermode.ItenablestheFILTONbit(bit4)intheCTRL1registerfor
CANIDfiltering.SeetheReceiveModedescriptioninthesoftwaredescriptionsectionformore
details.
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Buttons1–Button4(SW1‐SW4)
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Dependingonthemodethesebuttonswillperformspecifictasks.
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SerialPortConfiguration

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Theserialportisoptionalandprovidesaccesstoadditionalstatusanddatainformation:
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SoftwareRevision
CurrentMode
CANFramedata
CANHistoryFIFOdata
StatusRegistersdata
SleepModestatus
SerialCommandsMenu
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AsimplemenuofcommandsisprovidedforresettingtheHI‐3110,readinganddisplayingthe
HI‐3110statusregisters,andademohowtopassinputstringstotheprogram.Thereare
provisionsforadditionalusercodetobeimplementedsocustomcommandscanbedeveloped
andeasilyintegrated.
UARTSerialPortSetup:115200Baud,8bits,NoParity,Nohandshaking.
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Atpoweronreset(POR)therevisionoftheprogramwillbedisplayedontheLEDsfortwo
secondsinbinaryformatwhereLED1istheLSB.Aftertwosecondstheywillbeturnedoffthen
LED7willflasheverysecondasthemainMCU“live”operatingindicator.Amessagewillalsobe
senttotheSerialPort.ForReceivemodeitwillbeshownas:
HoltHI3110DemonstrationSoftwareRevision:05
ReceiveModepolled
BoardJumpers
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JP1‐CANBUSconnectorshield
JP2‐CANH60ohmtermination‐RemovethisinMonitormode.
JP3‐VDDjumpertoU3VLOGIC.CanbeusedtomeasureICC.
JP4‐SPLITterminationvoltagefilter.
JP5‐CANL60ohmtermination–RemovethisinMonitormode.
JP7‐VDDjumpertoU3VDD.CanbeusedtomeasureICC.
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UsersGuide
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Mode‐0: BoardTest

InthismodetheMCUperformsawalkingpatternontheGPIOpinsandcyclesturningonallthe
LEDs.Seetheboardtest.cmodulefordetailsandotheroptionsavailable.
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Mode‐1: TransmitModeStandardFrames
ThistransmitsastandardCANframewithanincrementing32‐bitvalueinthefirst4bytesofthe
data–field,thelastfourbyteswillbe00.AfterRESETpresstheButton‐1tostartthe
transmissions.AportionofthedatafieldwillbecopiedtotheLED1‐LED4’s.Theycanbeseen
countinginthismode.
PressButton‐1tostoptransmittingandprintoutthestatusregistersontheserialconsole.
PressButton‐2topausethetransmission.PressButton‐2againtotransmitoneframeagain.
PressButton‐3toprintouttheTransmitHistoryFIFOcontentsontheserialconsole.
PressButton‐4toresumetransmissions.
OPT1switch=open,Insertsa400usdelaybeforeeachtransmission.
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Mode‐2 ReceiveModeusingPollingmethod
ReceivemodeiscustomizedtotheTransmitmodebecauseitexpectstheincrementing32‐bit
valueinthedata‐fieldtocomparewiththepredictedvaluestartingfromcountzero.LED1‐4will
reflectthelowernibbleofbyte3ofthedata‐field.
OPT1switch=open,Theprogramwillcomparethe32‐bitcountervalueinthedata‐fieldand
turnontheREDLED8andhaltifitdoesnotmatchtheexpectedvalue.Toexitfromthehalt
conditionpressclosetheOTP1switchorpresstheRESETbutton.
CANErrorDetection
WhilereceivingframesifthereareanyerrorsdetectedintheHI‐3110registers,TEC,RECorERR,
theywillbeautomaticallyloggedontheSerialPort.
ForexampleifERRhasa01valueitwouldbeshownas:ERR:01.Theothertwoerrorswillbe
shownsimilarly.
Button‐1–StopreceivingCANmessagesandprintthelast64CANframesandthestatus
registersontheserialconsole.PressButton‐4toresumereceivingCANMessages.
Button‐3–PuttheHI‐3110intoSleepMode.PressButton‐4orsendCANmessagesinSleep
modetoterminateandre‐enterNormalmode.Amessageontheserialconsolewillindicatethe
SleepModeandthesourcetothewake‐upevent.
Holt HI 3110 Demonstration Software Revision: 06
Receive Mode polling

SLEEP Mode Entered
Detected Wake-up from Button-4 ---> Entering Normal Mode.
SLEEP Mode Entered
Detected Wake-up from Monitor Mode ---> Entering Normal
Mode.
REC: 01 ERR: 08
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ThelastlineshowsaBUSerrorthatwascausedwhentheHI‐3110wasinSleepModeandwoke
upduetoaCANmessagecomingin.TheprogramautomaticallyswitchesfromSleepModeto
MonitorModeandtheprogrammonitorsthisstatusandthenreprogramstheHI‐3110for
NormalmodebeforereceivingCANmessagesagain.
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Mode‐3 MonitorMode
MonitormodeisasimpleversionsimilartoReceivemodebutjustcapturestheCANdata
withoutprovidinganacknowledgebitontheBus.
PressButton‐1tostopreceivingCANmessagesandprintthelast64CANframesandtheHI‐
3110statusregistersontheserialconsole.
PressButton‐4toresumereceptionofCANMessages.
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Mode‐4 LoopBackMode
LoopBackmodecombinesaTransmitterandReceiverfunctionsimilartothenormalTransmit
andReceivemodes.TheTransmitterwilltransmitthe32‐bitincrementingcounterinthedata‐
fieldandthereceiverlooksandcomparesagainstthisdatapatternandwillturnontheREDLED
thesamewayasinnormalReceiveMode.NoactualdataistransmittedtotheBusinLoopBack
mode.
Button‐2‐StopstransmittingCANdataandprintsoutthecontentsoftheTransmitHistoryFIFO
asshownbelow.PressButton‐4tocontinue.
History FIFO: 04 86 00
History FIFO: 04 87 00
History FIFO: 04 87 81
History FIFO: 04 88 03
History FIFO: 04 88 84
History FIFO: 04 89 06
History FIFO: 04 4D E2
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Button‐1–StopreceivingCANmessagesandprintsthelast64CANframesandtheHI‐3110
statusregistersontheserialconsole.PressButton‐4toresumereceivingCANMessages.
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Mode‐5 TransmitExtendedFrames
ThisisthesameasTransmitMode‐1butwithExtendedFrameformat.
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Mode‐6 ReceiverInterruptMode
ThisisverysimilartonormalReceivemode‐2butwithoutSleepMode.Themainpurposeisto
demonstratehowtouseinterruptstoreceivedtheCANBusdatainthebackground.
PressButton‐1tostopreceivingCANmessagesandprintthelast64CANframesandtheHI‐
3110statusregistersontheserialconsole.
PressButton‐4toresumereceptionofCANmessages.
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Mode‐7 SerialCommandsMenu
Afterapoweronreset,asimpletextmenuwillbedisplayedontheserialconsole:
**************HOLTHI‐3110SerialConsoleCommands*************
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InputStringDemo0
Reset 1
StatusRegisterRead2
FilterIncrementing3
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EnterSelection:2
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Enter“1”togenerateahardwareresettotheHI‐3110.
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Enter“2”forthestatusregisterreadanddisplay:
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CTR0=80
CTR1=00
BTR0=00
BTR1=00
TEC=00
REC=00
MESSTAT=00
STATF=00

ERR=00
INTF=00
INTE=82
STATFE=00
GPINE=00
TIMERUB=0D
TIMERLB=66

Enter“3”torunatestprogramtoincrementfilterdata.Thisiscurrentlynotusedanywhere.

SoftwareDescription

ThesoftwareprojectisbuiltwithFreescale’sCodewarriorversion5.9.0usingthefreeversionwhichis
limitedto32Kcodesize.Thecurrentcodesizeisapproximately10.5K.Themainfunctionsareinmain.c
andthelowerlevelHI‐3110driversareinthe3110Driver.cfile.
ProjectFiles

SourceFiles
main.c   Maincode
3110Driver.C SPIlow‐leveldriversfortheHI‐3110
Peripherals.c GPIO,PLLfrequencysetupandSPIconfiguration
BoardTest.c BoardTestfunctions
Uart.c  Low‐levelUARTdrivers
datapage.c FreescaleIDEsupportfile

IncludesFiles

Main.h
3110Driver.h HI‐3110header
Peripherals.h
BoardTest.H 
Uart.h
Common.h Commondefinesfortheproject
Derivative.h FreescaleIDEsupportfile
Mc9s12xdt512.h FreescaleIDEtargetpartsupportfile



MCUClockandSPIFrequency

TheFreescaleMC9S12XDT512(MCU)usesa4MHzcrystalforoperationandthebuilt‐inPLLis
usedtomultiplythisby20toachievean80MHzsystemclock.Thissystemclockisdividedby
twofora40MHzBusClockwhichisusedinternallyfortheMCUperipherals.
ThePLLisprogrammedtomultiplyby20bythisline:
SYNR=9;  //80MhzPLLsystemclock

TheSPIfrequencyissetbythislineofcode:
 SPI0BR=SPI_5MHZ; //SPICLK=5MHz(see“peripherals.c”forotherrates)

TimerInterruptandtimings

A100usTimer0interruptsupportsbasictimings.Anumberofpredefinedconstantsare
providedtoallowsomecommondelayspassedintotheDelay100us()function:

#defineK_1MS10
#defineK_10MS100
#defineK_100MS1000
#defineK_1SEC10000

Usage:Delay100us(K_1SEC);   //delayforonesecond
AonesecondinterrupthandlerintheTIMER_ISRisprovided.Anycodeplacedherewill
automaticallygetexecutedeverysecond.
if(!count100us)
{//1secondscheduler
count100us=K_1SEC;
if(ON==g_ledFlashBool)//FlashtheLED8ifenabled
LED8^=TOGGLE;//Alive1secondblink
}

HI‐3110Interrupts

TheHI‐3110canbeconfiguredtooutputstatusontheINTandSTATpinswhichconnecttothe
MCUPP0andPP1inputs.InterrupthandlersareprovidedfortheHI‐3110INTandSTAToutput
pinconnectingtoPP0andPP1respectivelyandareenabledbycallingPortP_Int().
interrupt56voidPORTP_ISR(void)