C6455EDMA3mcbsp.docx
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C6455EDMA3mcbsp
6455的EDMA3+MCBSP
根据6455开发板自带的程序修改而来，调试通过，这个工程包括两个文件Edma_interrupt_example.c和edmaIntDispatcher.c，第一个是初始化的程序，第二个为中断服务子程序。
最后再附带一个FPGA的Verilog程序，用与产生mcbsp的接收数据。
如果想接收更多的数据，修改BUFFSIZE的大小就好了。
希望对你有帮助！
下面是第一个文件内容
/*根据dsk_app.c这个文件修改的mcbsp+edma，调试通过
*/
#include
#include
#include
#include
#include
#include
#include
#defineBUFFSIZE10
#definePING0
#definePONG1
Int16gBufferXmtPing[BUFFSIZE];//TransmitPINGbuffer
Int16gBufferXmtPong[BUFFSIZE];//TransmitPONGbuffer
Int16gBufferRcvPing[BUFFSIZE];//ReceivePINGbuffer
Int16gBufferRcvPong[BUFFSIZE];//ReceivePONGbuffer
volatileUint32intFlag=0;
Uint32passStatus=1;
/*Forwarddeclaration*/
voidtcc1Fxn（void）;
voidedmaInit（void）;
/*Macrothatgives2CLKdelaycycles*/
\
do{#defineWAIT_FOR_2_CLK
volatileintdelayCnt=2;\
while（delayCnt>0）--delayCnt;\
}while（0）
/*Globalconstants-Numberofwordstotransfer*/
//#defineNumOfWords100
/*Functiondeclarations*/
voidinit_McBSP0（void）;
CSL_StatushwSetupVerify（CSL_McbspHwSetup*,
CSL_McbspHwSetup*
）;
/*HandlefortheMCBSPinstance*/
CSL_McbspHandlehMcbsp;
/*Createdatabuffersfortransfer*/
//Uint16xmt[NumOfWords];
//Uint16rcv[NumOfWords];
/*Globaldatadefinition*/
CSL_McbspGlobalSetupmcbspGbl={
CSL_MCBSP_IOMODE_TXDIS_RXDIS,
CSL_MCBSP_DLBMODE_OFF,//关闭自环模式
CSL_MCBSP_CLKSTP_DISABLE
};
/*Receivedatasetup*/
CSL_McbspDataSetupmcbspRxData={
CSL_MCBSP_PHASE_SINGLE,
CSL_MCBSP_WORDLEN_8,
1,//framelength
（CSL_McbspWordLen）0,
0,
//CSL_MCBSP_FRMSYNC_IGNORE,//framesincignore
CSL_MCBSP_FRMSYNC_DETECT,
CSL_MCBSP_COMPAND_OFF_MSB_FIRST,
CSL_MCBSP_DATADELAY_1_BIT,
CSL_MCBSP_RJUSTDXENA_RJUST_RZF,
CSL_MCBSP_INTMODE_ON_READY,
//CSL_MCBSP_INTMODE_ON_FSYNC,
CSL_MCBSP_32BIT_REVERS_DISABLE
};
/*Transmitdatasetup*/
CSL_McbspDataSetupmcbspTxData={
CSL_MCBSP_PHASE_SINGLE,
CSL_MCBSP_WORDLEN_8,
1,//每次发送一个元素
（CSL_McbspWordLen）0,
0,
CSL_MCBSP_FRMSYNC_DETECT,
CSL_MCBSP_COMPAND_OFF_MSB_FIRST,
CSL_MCBSP_DATADELAY_1_BIT,//发送时，相对于同步信号延时一个clk
CSL_MCBSP_RJUSTDXENA_DXENA_OFF,
CSL_MCBSP_INTMODE_ON_READY,
//CSL_MCBSP_INTMODE_ON_FSYNC,
CSL_MCBSP_32BIT_REVERS_ENABLE
};
/*Clocksetupdefaults*/
CSL_McbspClkSetupmcbspClock={
CSL_MCBSP_FSCLKMODE_INTERNAL,/*XMTFrame-sync*/
//CSL_MCBSP_FSCLKMODE_INTERNAL,/*RCVFrame-sync*/
CSL_MCBSP_FSCLKMODE_EXTERNAL,
CSL_MCBSP_TXRXCLKMODE_INTERNAL,/*XMTclock*/
//CSL_MCBSP_TXRXCLKMODE_INTERNAL,/*RCVclock*/
CSL_MCBSP_TXRXCLKMODE_EXTERNAL,
CSL_MCBSP_FSPOL_ACTIVE_HIGH,/*XMTFrame-syncactivehigh*/
CSL_MCBSP_FSPOL_ACTIVE_HIGH,/*RCVFrame-syncactivehigh*/
CSL_MCBSP_CLKPOL_TX_RISING_EDGE,/*XMTclockrisingedge*/
//CSL_MCBSP_CLKPOL_RX_FALLING_EDGE,/*RCVclockfallingedge*/
CSL_MCBSP_CLKPOL_RX_RISING_EDGE,/*RCVclockfallingedge*/
0,/*Frame-syncpulsewidth=1bit*/
0x8,/*Frame-syncpulseperiod17clk*/
0x5,/*clkdivideby6*/
CSL_MCBSP_SRGCLK_CLKCPU,
CSL_MCBSP_CLKPOL_TX_RISING_EDGE,/*CLKSpinsignalrisingedge*/
CSL_MCBSP_TXFSMODE_DXRCOPY,
//CSL_MCBSP_TXFSMODE_SRG,
CSL_MCBSP_CLKGSYNCMODE_OFF/*GSYNC=0meansnoclocksynchronisation*/
};
/*Multichannelsetup*/
CSL_McbspMulChSetupmcbspMul={
CSL_MCBSP_PARTMODE_2PARTITION,/*RX*/
CSL_MCBSP_PARTMODE_2PARTITION,/*TX*/
（Uint16）0,/*rxMulChSel*/
（Uint16）0,/*txMulChSel*/
CSL_MCBSP_PABLK_0,/*rxPartABlk*/
CSL_MCBSP_PBBLK_1,/*rxPartBBlk*/
CSL_MCBSP_PABLK_0,/*txPartABlk*/
CSL_MCBSP_PBBLK_1/*txPartABlk*/
};
/*Mcbsphwsetup*/
CSL_McbspHwSetupmyHwSetup={
&mcbspGbl,
&mcbspRxData,
&mcbspTxData,
&mcbspClock,
&mcbspMul,
CSL_MCBSP_EMU_FREERUN,
NULL
};
/*Intcdeclaration*/
CSL_IntcContextintcContext;
CSL_IntcEventHandlerRecordEventHandler[100];
CSL_IntcObjintcObjEdma;
CSL_IntcHandlehIntcEdma;
CSL_IntcGlobalEnableStatestate;
CSL_IntcEventHandlerRecordEventRecord;
CSL_IntcParamvectId;
CSL_Edma3HwDmaChannelSetupdmahwSetup[CSL_EDMA3_NUM_DMACH]=
CSL_EDMA3_DMACHANNELSETUP_DEFAULT;
CSL_Edma3HwSetuphwSetup={&dmahwSetup[0],NULL};
/*Globals*/
/*Edmahandle*/
CSL_Edma3HandlehModule;
/*PaRAMsettingsforsets13（receive）and65（receivepingreload）*/
CSL_Edma3ParamSetupgParamSetupRcvPing={//PaRAMSetStructureforreceivepingbuffer
CSL_EDMA3_OPT_MAKE//option-OPT
（CSL_EDMA3_ITCCH_DIS,\
CSL_EDMA3_TCCH_DIS,\
\
CSL_EDMA3_ITCINT_DIS,
CSL_EDMA3_TCINT_EN,\
15,CSL_EDMA3_TCC_NORMAL,\
CSL_EDMA3_FIFOWIDTH_NONE,\
CSL_EDMA3_STATIC_DIS,\
CSL_EDMA3_SYNC_A,\
CSL_EDMA3_ADDRMODE_INCR,\
CSL_EDMA3_ADDRMODE_INCR）,
（Uint32）0x028c0000,//srcAddr-SRC
CSL_EDMA3_CNT_MAKE（2,BUFFSIZE）,//aCntbCnt-（ACNT,BCNT）
（Uint32）&gBufferRcvPing,//dstAddr-DST
CSL_EDMA3_BIDX_MAKE（0,2）,//srcDstBidx-（SRCBIDX,DSTBIDX）
CSL_EDMA3_LINKBCNTRLD_MAKE（0x4800,1）,//linkBcntrld-（LINK,BCNTRLD）
CSL_EDMA3_CIDX_MAKE（0,0）,//srcDstCidx-（SRCCIDX,DSTCIDX）
1//cCnt-CCNT
};
/*PaRAMsettingsforset64（transmitpongreload）*/
CSL_Edma3ParamSetupgParamSetupRcvPong={//PaRAMSetStructureforreceivepong
buffer
CSL_EDMA3_OPT_MAKE//option-OPT
（CSL_EDMA3_ITCCH_DIS,\
CSL_EDMA3_TCCH_DIS,\
CSL_EDMA3_ITCINT_DIS,\
CSL_EDMA3_TCINT_EN,\
15,CSL_EDMA3_TCC_NORMAL,\
CSL_EDMA3_FIFOWIDTH_NONE,\
CSL_EDMA3_STATIC_DIS,\
CSL_EDMA3_SYNC_A,\
CSL_EDMA3_ADDRMODE_INCR,\
CSL_EDMA3_ADDRMODE_INCR）,
（Uint32）0x028c0000,//srcAddr-SRC
CSL_EDMA3_CNT_MAKE（2,BUFFSIZE）,//aCntbCnt-（ACNT,BCNT）
（Uint32）&gBufferRcvPong,//dstAddr-DST
CSL_EDMA3_BIDX_MAKE（0,2）,//srcDstBidx-（SRCBIDX,DSTBIDX）
CSL_EDMA3_LINKBCNTRLD_MAKE（0x4820,1）,//linkBcntrld-（LINK,BCNTRLD）
CSL_EDMA3_CIDX_MAKE（0,0）,//srcDstCidx-（SRCCIDX,DSTCIDX）
1//cCnt-CCNT
};
voidedmaInit（）
{
edmaObj;
CSL_Edma3Obj
CSL_Edma3ParamHandlehParamBasic1;
CSL_Edma3ChannelObjchObjXmt,chObjRcv;
CSL_Edma3CmdIntrregionIntr;
CSL_Edma3CmdDraeregionAccess;
CSL_Edma3ChannelHandlehChannelXmt,hChannelRcv;
CSL_Edma3Contextcontext;
CSL_Edma3ChannelAttrchAttrXmt,chAttrRcv;
CSL_Statusstatus;
Uint32i;
/*Intcmoduleinitialization*/
intcContext.eventhandlerRecord=EventHandler;
intcContext.numEvtEntries=10;
CSL_intcInit（&intcContext）;
/*EnableNMIs*/
CSL_intcGlobalNmiEnable（）;
/*Enableglobalinterrupts*/
CSL_intcGlobalEnable（&state）;
/*Openingaintchandleforedmaevent*/
vectId=CSL_INTC_VECTID_4;
hIntcEdma=CSL_intcOpen（&intcObjEdma,CSL_INTC_EVENTID_EDMA3CC_INT1,\
&vectId,NULL）;
/*Moduleinitialization*/
status=CSL_edma3Init（&context）;
if（status!
=CSL_SOK）{
printf（Edmamoduleinitializationfailed\n）;
return;
}
/*Edmamoduleopen*/
hModule=CSL_edma3Open（&edmaObj,CSL_EDMA3,NULL,&status）;
/*SetuptheDRAEmasks
*DRAEenable（Bits0-15）fortheshadowregion1.
*/
regionAccess.region=CSL_EDMA3_REGION_1;
regionAccess.drae=0xFFFFFFFF;
regionAccess.draeh=0xFFFFFFFF;
CSL_edma3HwControl（hModule,CSL_EDMA3_CMD_DMAREGION_ENABLE,®ionAccess）;
/*DMAchanel-->PaRAMmapping,queueassignment*/
dmahwSetup[12].paramNum=12;
dmahwSetup[12].que=CSL_EDMA3_QUE_1;
dmahwSetup[13].paramNum=13;
dmahwSetup[13].que=CSL_EDMA3_QUE_1;
CSL_edma3HwSetup（hModule,&hwSetup）;
/*---SetupReceiveChanvnel（McBSP1receive,param13）---*/
/*Channelopen*/
chAttrRcv.regionNum=CSL_EDMA3_REGION_1;
chAttrRcv.chaNum=CSL_EDMA3_CHA_REVT0;
hChannelRcv=CSL_edma3ChannelOpen（&chObjRcv,CSL_EDMA3,&chAttrRcv,&status）;
/*Setupparameterblock65asEDMAtransmitpingreload*/
hParamBasic1=CSL_edma3GetParamHandle（hChannelRcv,65,NULL）;
status=CSL_edma3ParamSetup（hParamBasic1,&gParamSetupRcvPing）;
/*Setupparameterblock64asEDMAtransmitpongreload*/
hParamBasic1=CSL_edma3GetParamHandle（hChannelRcv,64,NULL）;
CSL_edma3ParamSetup（hParamBasic1,&gParamSetupRcvPong）;
/*Setupparameterblock13asEDMAtransmit（startwithcopyofping）*/
hParamBasic1=CSL_edma3GetParamHandle（hChannelRcv,13,NULL）;
CSL_edma3ParamSetup（hParamBasic1,&gParamSetupRcvPing）;
/*Setupchannelandqueuerelationships*/
CSL_edma3HwChannelSetupParam（hChannelRcv,13）;
CSL_edma3HwChannelSetupQue（hChannelRcv,CSL_EDMA3_QUE_1）;
/*AssociationofanEDMAeventhandlerwiththeINTCroutine*/
EventRecord.handler=&eventEdmaHandler;
EventRecord.arg=（void*）（hModule）;
CSL_intcPlugEventHandler（hIntcEdma,&EventRecord）;
/*Enablingeventedma*/
CSL_intcHwControl（hIntcEdma,CSL_INTC_CMD_EVTENABLE,NULL）;
/*HookuptheEDMAeventwithancompletioncodefunctionhandler*/
EdmaEventHook（15,tcc1Fxn）;
//EdmaEventHook（1,tcc1Fxn）;
/*EnableEDMAregioninterrupts*/
regionIntr.region=CSL_EDMA3_REGION_1;
regionIntr.intr=0x0000C000;
regionIntr.intrh=0x00000000;
CSL_edma3HwControl（hModule,CSL_EDMA3_CMD_INTR_ENABLE,®ionIntr）;
/*Receiveeventclearandenable,备注用于外部触发使用*/
CSL_edma3HwChannelControl（hChannelRcv,CSL_EDMA3_CMD_CHANNEL_CLEAR,NULL）;
CSL_edma3HwChannelControl（hChannelRcv,CSL_EDMA3_CMD_CHANNEL_ENABLE,NULL）;
/*ClearCPUinterruptevent72（EVTCLR2）*/
//*（（Uint32*）0x1800048）=0x00000100;
/*EnableCPUinterruptevent72（EVTMASK2）*/
//*（（Uint32*）0x1800088）=0x00000100;
/*Manuallytriggerth
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