📄 dsk_app.c
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#include "dsk_appcfg.h"
#include "target.h" /* defines TARGET_INITIALIZE() */
/*
* These are include files that support interfaces to BIOS and CSL modules
* used by the program.
*/
#include <std.h>
#include <swi.h>
#include <log.h>
#include <c6x.h>
#include <csl.h>
#include <csl_edma.h>
#include <csl_irq.h>
#include <csl_mcbsp.h>
#include <math.h>
#include <rtdx.h> /* defines RTDX target API calls */
/*
* The 6713 DSK Board Support Library is divided into several modules, each
* of which has its own include file. The file dsk6713.h must be included
* in every program that uses the BSL. This example also uses the
* DIP, LED and AIC23 modules.
*/
#include "dsk6713.h"
#include "dsk6713_led.h"
#include "dsk6713_dip.h"
#include "dsk6713_aic23.h"
#include "./functions/genfct.h"
#include "./functions/modulation.h"
#include "./functions/upsampling.h"
#include "./functions/complex.h"
#include "./functions/idft_dsp.h"
#include "./functions/bit_rev.h"
#include "C:/ti/c6000/dsplib/include/dspf_sp_convol.h"
#include "C:/ti/c6000/dsplib/include/dspf_sp_maxval.h"
#include "C:/ti/c6000/dsplib/include/dspf_sp_minval.h"
#define MAX(a,b) ((a) > (b) ? (a):(b))
/* Function prototypes */
void initIrq(void);
void initMcbsp(void);
void initEdma(void);
void copyData(Int16 *inbuf, Int16 *outbuf, Int16 length);
void processBuffer(void);
void edmaHwi(void);
void readRDTX(void);
void copy2Data(const short *inbuf, short *outbuf, const short length);
void correlation(const short *reference, const short *input, const short len_ref, const short len_inp, int *res);
void framesync(short *databuf, short *startindex, short length);
/* Constants for the buffered ping-pong transfer */
#define PING 0
#define PONG 1
#define DATABUFFSIZE 17000
#define SINE_TABLE_SIZE 48
#define TEMPBUFFSIZE 40 //buffer to hold temporary variables for processing
#define SUBCARSIZE 124
#define DFTSIZE 256
#define CPSIZE 32 //cyclic prefix size
#define UPFACTOR 4
#define UPFACTOR2 2
#define LASTBUFF (DFTSIZE+CPSIZE) // size of the transmitted buffer before upsampling
#define FILTER_LENGTH 41
#define BUFFSIZE (2*((LASTBUFF*UPFACTOR)+FILTER_LENGTH-1)) //2384
#define MAX_ELEMENTS 200
#define TOTFRAMES 3000
/* declare a global input channel */
RTDX_CreateInputChannel( ichan );
/*
* Data buffer declarations - the program uses four logical buffers of size
* BUFFSIZE, one ping and one pong buffer on both receive and transmit sides.
*/
Int16 gBufferXmtPing[BUFFSIZE]; // Transmit PING buffer
Int16 gBufferXmtPong[BUFFSIZE]; // Transmit PONG buffer
Int16 gBufferRcvPing[BUFFSIZE]; // Receive PING buffer
Int16 gBufferRcvPong[BUFFSIZE]; // Receive PONG buffer
EDMA_Handle hEdmaXmt; // EDMA channel handles
EDMA_Handle hEdmaReloadXmtPing;
EDMA_Handle hEdmaReloadXmtPong;
EDMA_Handle hEdmaRcv;
EDMA_Handle hEdmaReloadRcvPing;
EDMA_Handle hEdmaReloadRcvPong;
MCBSP_Handle hMcbsp1; // McBSP1 (codec data) handle
Int16 gXmtChan; // TCC codes (see initEDMA())
Int16 gRcvChan;
/*Databuffer: File to transmitter*/
#pragma DATA_SECTION(dataBuffer,"mydata");
/*Buffers for pulseshaping*/
#pragma DATA_ALIGN(cosfilter,8);
#pragma DATA_ALIGN(upBuffer,8);
/*Allign buffer for IDFT*/
//#pragma DATA_ALIGN(modulationBuffer, 8);
#pragma DATA_ALIGN(upsampBuffer, 8);
//#pragma DATA_ALIGN(bitAlloc, 8);
Uint32 dataBuffer[DATABUFFSIZE];
Uint32 tempBuffer[TEMPBUFFSIZE]; //tempBuffer to extract temporary frames for processing
Uint32 arraydata[MAX_ELEMENTS];
/*Buffers for Data Processing*/
//#pragma DATA_ALIGN(modulationBuffer,8);
float constellation[TOTFRAMES];
float maxtime[TOTFRAMES];
float modulationBuffer[2*SUBCARSIZE]; /*Modulation Buffer SIZE:254*/
#pragma DATA_ALIGN(idftBuffer,8);
float idftBuffer[DFTSIZE+CPSIZE]; //Buffer after IDFT SIZE:288 real
float upBuffer[LASTBUFF*UPFACTOR+2*(FILTER_LENGTH-1)]; //1232 Add zeros between symbols
float upsampBuffer[LASTBUFF*UPFACTOR+FILTER_LENGTH-1]; //1192 Output of Pulseshaping
Int16 upsampBufferInterleaved[2*(LASTBUFF*UPFACTOR+FILTER_LENGTH-1)]; //BUFFSIZE
Int16 downsampBuffer[UPFACTOR2*SUBCARSIZE*4];
/*
The states in the transmitter
*/
typedef enum states{
START, TRAINING,SYNC,RUNNING, LASTFRAME, END} state_t;
state_t State = START;
/* Sinetable for sync */
Int16 sinetable[SINE_TABLE_SIZE] = {
0x0000, 0x10b4, 0x2120, 0x30fb, 0x3fff, 0x4dea, 0x5a81, 0x658b,
0x6ed8, 0x763f, 0x7ba1, 0x7ee5, 0x7ffd, 0x7ee5, 0x7ba1, 0x76ef,
0x6ed8, 0x658b, 0x5a81, 0x4dea, 0x3fff, 0x30fb, 0x2120, 0x10b4,
0x0000, 0xef4c, 0xdee0, 0xcf06, 0xc002, 0xb216, 0xa57f, 0x9a75,
0x9128, 0x89c1, 0x845f, 0x811b, 0x8002, 0x811b, 0x845f, 0x89c1,
0x9128, 0x9a76, 0xa57f, 0xb216, 0xc002, 0xcf06, 0xdee0, 0xef4c
};
// root raised cosine coefficients
float cosfilter[FILTER_LENGTH]={
0xBBDC2D0B, 0xBBA97F94, 0x3B316F59, 0x3C3B2845, 0x3C506113, 0x3B1700C5, 0xBC74AB1F,
0xBCD66122, 0xBC9C6383, 0x3BF3F3A4, 0x3D1E2D51, 0x3D4DBE5C, 0x3CCAC8E7, 0xBD05AA56,
0xBDB79002, 0xBDCC96EA, 0xBCEACC12, 0x3DFC8710, 0x3EA00801, 0x3EF0490D, 0x3F07B1C6,
0x3EF0490D, 0x3EA00801, 0x3DFC8710, 0xBCEACC12, 0xBDCC96EA, 0xBDB79002, 0xBD05AA56,
0x3CCAC8E7, 0x3D4DBE5C, 0x3D1E2D51, 0x3BF3F3A4, 0xBC9C6383, 0xBCD66122, 0xBC74AB1F,
0x3B1700C5, 0x3C506113, 0x3C3B2845, 0x3B316F59, 0xBBA97F94, 0xBBDC2D0B
};
/* Buffers for the training sequence in the first frame*/
float trainingBuffer[2*SUBCARSIZE]= {
1, -1, -1, 1, 1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, 1, -1,
1, -1, -1, 1, 1, 1, -1, 1,
-1, 1, -1, -1, -1, -1, -1, 1,
1, -1, 1, -1, 1, -1, 1, 1,
-1, -1, -1, 1, -1, 1, -1, -1,
-1, 1, -1, 1, 1, -1, 1, 1,
1, -1, -1, 1, 1, 1, 1, -1,
-1, 1, 1, -1, -1, -1, -1, -1,
-1, 1, -1, 1, -1, -1, 1, 1,
-1, -1, 1, -1, 1, -1, -1, -1,
-1, 1, 1, -1, 1, 1, 1, 1,
1, 1, -1, -1, 1, 1, 1, 1,
-1, 1, -1, 1, -1, 1, 1, -1,
-1, -1, 1, -1, -1, 1, 1, -1,
-1, -1, 1, 1, 1, -1, 1, 1,
1, 1, -1, 1, 1, -1, 1, 1,
1, 1, -1, -1, -1, -1, 1, 1,
-1, -1, 1, -1, -1, -1, 1, 1,
-1, -1, -1, -1, -1, -1, 1, -1,
-1, -1, 1, 1, -1, 1, 1, 1,
-1, 1, -1, -1, 1, 1, 1, -1,
-1, -1, -1, 1, 1, 1, -1, -1,
-1, -1, -1, -1, 1, -1, 1, -1,
1, 1, -1, -1, -1, 1, 1, 1,
1, 1, -1, -1, 1, -1, 1, -1,
1, 1, 1, -1, 1, -1, 1, 1,
1, 1, -1, -1, -1, 1, 1, 1,
1, -1, -1, 1, 1, 1, -1, 1,
1, 1, -1, -1, 1, 1, 1, 1,
1, 1, 1, -1, -1, -1, 1, -1
};
float eAlloc[SUBCARSIZE]; /*= { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1};*/
short bitAlloc[SUBCARSIZE] = { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4
};
/*short bitAlloc[SUBCARSIZE] = { 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8
}; */
/*
* EDMA Config data structure
*/
/* Transmit side EDMA configuration */
EDMA_Config gEdmaConfigXmt = {
EDMA_FMKS(OPT, PRI, HIGH) | // Priority
EDMA_FMKS(OPT, ESIZE, 16BIT) | // Element size
EDMA_FMKS(OPT, 2DS, NO) | // 2 dimensional source?
EDMA_FMKS(OPT, SUM, INC) | // Src update mode
EDMA_FMKS(OPT, 2DD, NO) | // 2 dimensional dest
EDMA_FMKS(OPT, DUM, NONE) | // Dest update mode
EDMA_FMKS(OPT, TCINT, YES) | // Cause EDMA interrupt?
EDMA_FMKS(OPT, TCC, OF(0)) | // Transfer complete code
EDMA_FMKS(OPT, LINK, YES) | // Enable link parameters?
EDMA_FMKS(OPT, FS, NO), // Use frame sync?
(Uint32)&gBufferXmtPing, // Src address
EDMA_FMK (CNT, FRMCNT, NULL) | // Frame count
EDMA_FMK (CNT, ELECNT, BUFFSIZE), // Element count
EDMA_FMKS(DST, DST, OF(0)), // Dest address
EDMA_FMKS(IDX, FRMIDX, DEFAULT) | // Frame index value
EDMA_FMKS(IDX, ELEIDX, DEFAULT), // Element index value
EDMA_FMK (RLD, ELERLD, NULL) | // Reload element
EDMA_FMK (RLD, LINK, NULL) // Reload link
};
/* Receive side EDMA configuration */
EDMA_Config gEdmaConfigRcv = {
EDMA_FMKS(OPT, PRI, HIGH) | // Priority
EDMA_FMKS(OPT, ESIZE, 16BIT) | // Element size
EDMA_FMKS(OPT, 2DS, NO) | // 2 dimensional source?
EDMA_FMKS(OPT, SUM, NONE) | // Src update mode
EDMA_FMKS(OPT, 2DD, NO) | // 2 dimensional dest
EDMA_FMKS(OPT, DUM, INC) | // Dest update mode
EDMA_FMKS(OPT, TCINT, YES) | // Cause EDMA interrupt?
EDMA_FMKS(OPT, TCC, OF(0)) | // Transfer complete code
EDMA_FMKS(OPT, LINK, YES) | // Enable link parameters?
EDMA_FMKS(OPT, FS, NO), // Use frame sync?
EDMA_FMKS(SRC, SRC, OF(0)), // Src address
EDMA_FMK (CNT, FRMCNT, NULL) | // Frame count
EDMA_FMK (CNT, ELECNT, BUFFSIZE), // Element count
(Uint32)&gBufferRcvPing, // Dest address
EDMA_FMKS(IDX, FRMIDX, DEFAULT) | // Frame index value
EDMA_FMKS(IDX, ELEIDX, DEFAULT), // Element index value
EDMA_FMK (RLD, ELERLD, NULL) | // Reload element
EDMA_FMK (RLD, LINK, NULL) // Reload link
};
/* McBSP codec data channel configuration */
static MCBSP_Config mcbspCfg1 = {
MCBSP_FMKS(SPCR, FREE, NO) |
MCBSP_FMKS(SPCR, SOFT, NO) |
MCBSP_FMKS(SPCR, FRST, YES) |
MCBSP_FMKS(SPCR, GRST, YES) |
MCBSP_FMKS(SPCR, XINTM, XRDY) |
MCBSP_FMKS(SPCR, XSYNCERR, NO) |
MCBSP_FMKS(SPCR, XRST, YES) |
MCBSP_FMKS(SPCR, DLB, OFF) |
MCBSP_FMKS(SPCR, RJUST, RZF) |
MCBSP_FMKS(SPCR, CLKSTP, DISABLE) |
MCBSP_FMKS(SPCR, DXENA, OFF) |
MCBSP_FMKS(SPCR, RINTM, RRDY) |
MCBSP_FMKS(SPCR, RSYNCERR, NO) |
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