TI中文支持网新人刚学OMAPL138，想问问各位EDMA3 pingpong例程怎么下载没找到
Allen35065：
给你一个C64x+上的参考，L138的细节可能还不太一样，不过流程应该是一样的
/* =========================================================================== * Copyright (c) Texas Instruments Inc 2002, 2003, 2004, 2005 * * Use of this software is controlled by the terms and conditions found in the * license agreement under which this software has been supplied. * ========================================================================== */
/** =========================================================================== * * @file Edma_ping_pong_xfer_gbl_reg.c * * @path $(CSLPATH)\example\edma\edma_ping_pong_xfer_gbl_reg\src * * @desc Example of EDMA * * ============================================================================ * @n <b> Example Description </b> * @n This is an example of the CSL EDMA usage for the * Channel Initialization for ping pong buffer transfer * where channels are opened in the global region * *============================================================================= * * <b> Test Procedure </b> * @verbatim * 1. Configure the CCS setup to work with the emulator being used * 2. Please refer CCS manual for setup configuration and loading * proper GEL file * 3. Launch CCS window * 4. Open project Edma_ping_pong_xfer_gbl_reg.pjt * 5. Build the project and load the .out file of the project. * 6. The example can be executed from the main(). * * @endverbatim * * * ============================================================================= */ /* ============================================================================ * Revision History * =============== * 29-May-2004 Ruchika Kharwar File Created. * * ============================================================================ */
#include <stdio.h>#include <csl_edma3.h>#include <soc.h>
/* Globals */Uint8 srcBuff1[256];Uint8 srcBuff2[256];Uint8 dstBuff1[256];Uint8 dstBuff2[256];Uint32 passStatus = 1;
/* Forward declaration */void edma_ping_pong_xfer_gbl_region (void);
/* * ============================================================================= * @func main * * @desc * This is the main routine for the file. * * ============================================================================= */void main(void){ /* Invoke example */ edma_ping_pong_xfer_gbl_region (); return;}
/* * ============================================================================= * @func edma_ping_pong_xfer_gbl_region * * @arg * NONE * * @desc * This is the example routine which perform edma ping pong buffer transfer * where channel is open in the global region. * * @return * NONE * * ============================================================================= */void edma_ping_pong_xfer_gbl_region (void){ CSL_Edma3Handle hModule;// CSL_Edma3HwSetup hwSetup; CSL_Edma3Obj edmaObj; CSL_Edma3ParamHandle hParamPing; CSL_Edma3ParamHandle hParamPong; CSL_Edma3ParamHandle hParamBasic; CSL_Edma3ChannelObj chObj; CSL_Edma3CmdIntr regionIntr; CSL_Edma3ChannelHandle hChannel; CSL_Edma3ParamSetup myParamSetup; CSL_Edma3Context context; CSL_Edma3ChannelAttr chAttr; CSL_Status status;// CSL_Edma3HwDmaChannelSetup dmahwSetup; Uint32 loopIndex; /* Initialize data */ for (loopIndex = 0; loopIndex < 256; loopIndex++) { srcBuff1[loopIndex] = loopIndex; srcBuff2[loopIndex] = loopIndex; dstBuff1[loopIndex] = 0; dstBuff2[loopIndex] = 0; } /* Module initialization */ status = CSL_edma3Init(&context); if (status != CSL_SOK) { printf ("Edma module initialization failed\n"); return; } /* Module level open */ hModule = CSL_edma3Open(&edmaObj,CSL_EDMA3,NULL,&status); if ( (hModule == NULL) || (status != CSL_SOK)) { printf ("Edma module open failed\n"); return; }#if 0 /* Module setup */ dmahwSetup.paramNum = 0; dmahwSetup.que = CSL_EDMA3_QUE_0; hwSetup.dmaChaSetup = &dmahwSetup; hwSetup.qdmaChaSetup = NULL; status = CSL_edma3HwSetup(hModule,&hwSetup); if (status != CSL_SOK) { printf ("Hardware setup failed\n"); CSL_edma3Close (hModule); return; } #endif /* Channel open */ chAttr.regionNum = CSL_EDMA3_REGION_GLOBAL; chAttr.chaNum = CSL_EDMA3_CHA_TEVTLO0; hChannel = CSL_edma3ChannelOpen(&chObj, CSL_EDMA3, &chAttr, &status); if ((hChannel == NULL) || (status != CSL_SOK)) { printf ("Edma channel open failed\n"); return; }
CSL_edma3HwChannelSetupParam(hChannel, CSL_EDMA3_CHA_TEVTLO0); if (status != CSL_SOK) { printf ("Edma channel setup param failed\n"); return; } /* Change Channel Default queue setup from 0 to 3 */ status = CSL_edma3HwChannelSetupQue(hChannel,CSL_EDMA3_QUE_3); if (status != CSL_SOK) { printf ("Edma channel setup que failed\n"); return; }
/* Obtain a handle to parameter set 0 */ hParamBasic = CSL_edma3GetParamHandle(hChannel,0,NULL); if (hParamBasic == NULL) { printf ("Edma get param handle for param entry 0 failed\n"); return; } /* Obtain a handle to parameter set 2 */ hParamPing = CSL_edma3GetParamHandle(hChannel,2,NULL); if (hParamPing == NULL) { printf ("Edma get param handle for param entry 2 failed\n"); return; } /* Obtain a handle to parameter set 1 */ hParamPong = CSL_edma3GetParamHandle(hChannel,1,NULL); if (hParamPong == NULL) { printf ("Edma get param handle for param entry 1 failed\n"); return; } /* Setup the parameter entry parameters (Ping buffer) */ myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS, \ CSL_EDMA3_TCCH_DIS, \ CSL_EDMA3_ITCINT_DIS, \ CSL_EDMA3_TCINT_EN, \ 0,CSL_EDMA3_TCC_NORMAL,\ CSL_EDMA3_FIFOWIDTH_NONE, \ CSL_EDMA3_STATIC_DIS, \ CSL_EDMA3_SYNC_A, \ CSL_EDMA3_ADDRMODE_INCR, \ CSL_EDMA3_ADDRMODE_INCR ); myParamSetup.srcAddr = (Uint32)srcBuff1; myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(256,1); myParamSetup.dstAddr = (Uint32)dstBuff1; myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(1,1); myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamPong,0); myParamSetup.srcDstCidx = CSL_EDMA3_CIDX_MAKE(0,1); myParamSetup.cCnt = 1; status = CSL_edma3ParamSetup(hParamBasic,&myParamSetup); if (status != CSL_SOK) { printf("Edma parameter entry setup is failed\n"); return; }
/* Ping setup */ status = CSL_edma3ParamSetup(hParamPing,&myParamSetup); if (status != CSL_SOK) { printf("Edma ping parameter entry setup is failed\n"); return; } /* Pong setup */ myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamPing,0); myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS, \ CSL_EDMA3_TCCH_DIS, \ CSL_EDMA3_ITCINT_DIS, \ CSL_EDMA3_TCINT_EN,\ 1,CSL_EDMA3_TCC_NORMAL,\ CSL_EDMA3_FIFOWIDTH_NONE, \ CSL_EDMA3_STATIC_EN, \ CSL_EDMA3_SYNC_A, \ CSL_EDMA3_ADDRMODE_INCR, \ CSL_EDMA3_ADDRMODE_INCR ); myParamSetup.srcAddr = (Uint32)srcBuff2; myParamSetup.dstAddr = (Uint32)dstBuff2; status = CSL_edma3ParamSetup(hParamPong,&myParamSetup); if (status != CSL_SOK) { printf("Edma ping parameter entry setup is failed\n"); return; } /* Interrupt enable (Bits 0-1) for the global region interrupts */ regionIntr.region = CSL_EDMA3_REGION_GLOBAL ; regionIntr.intr = 0x3 ; regionIntr.intrh = 0x0000 ; CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTR_ENABLE,®ionIntr);
/* Trigger channel */ CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL); regionIntr.region = CSL_EDMA3_REGION_GLOBAL ; regionIntr.intr = 0 ; regionIntr.intrh = 0 ;
/* Poll on IPR bit 0 */ do { CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,®ionIntr); } while (!(regionIntr.intr & 0x1)); /* Clear the pending bit */ CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTRPEND_CLEAR,®ionIntr); /* Trigger Channel */ CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL); /* Poll on IPR bit 2 */ do { CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,®ionIntr); } while (!(regionIntr.intr & 0x2)); /* Check transfer by comparing the source and destination buffers */ if(Verify_Transfer( 256, 1, 1, 0, 0, 0, 0, srcBuff1, dstBuff1, \ TRUE) == FALSE) passStatus = 0; if(Verify_Transfer( 256, 1, 1, 0, 0, 0, 0, srcBuff2, dstBuff2, \ TRUE) == FALSE) passStatus = 0; if (passStatus == 1) printf ("<<EXAMPLE PASSED>>: Edma Ping Pong Buffer Transfer Passed\n"); else { printf ("<<EXAMPLE FAILED>>: Edma Ping Pong Buffer Transfer Failed\n"); return; } /* Close channel */ status = CSL_edma3ChannelClose(hChannel); if (status != CSL_SOK) { printf("Edma channel close failed\n"); return; } /* Close edma module */ status = CSL_edma3Close(hModule); if (status != CSL_SOK) { printf("Edma module close failed\n"); return; } printf ("=============================================================\n"); return;}
Yan Jin2：
回复 Allen35065:
我想问一下你这个程序参考什么写的？谢谢
user4712072：
回复 Yan Jin2:
csl下的例子
