First I'm not good in English. So if there are something wrong, plz forgive me.
here is my problem
i want to use the code in a example for 28335 from control suite.
Witch is called 2833x_FixedPoint_FIR16.
i try to let it work on piccolo 28035 control card.
but it failed. it just run about half code. the calculation doesn't done.
it just halt.or jump to othere address.(not sure)
when i halt it ,it stopped at 0x3ff8cd. and the number calculated is always zero.
i 'm using ccs5.4 piccolo 28035
and i copy the code the setting and change cmd file's content as example
need a help figure it out
thank you
my main.c file if it is useful.
/*
* main.c
*/
#include "DSP28x_Project.h"
#include <fir.h>
#include "math.h"
#include "float.h"
#define FIR_ORDER 32
#define SIGNAL_LENGTH 100
#pragma DATA_SECTION(fir, "firfilt");
FIR16 fir= FIR16_DEFAULTS;
#pragma DATA_SECTION(dbuffer,"firldb"); // Delay buffer alignment
long dbuffer[(FIR_ORDER+3)/2];
#pragma DATA_SECTION(sigIn, "sigIn"); // Input/output buffer alignment
#pragma DATA_SECTION(sigOut, "sigOut");
int sigIn[SIGNAL_LENGTH];
int sigOut[SIGNAL_LENGTH];
#pragma DATA_SECTION(coeff, "coefffilt"); // Coefficients buffer alignment
long const coeff[(FIR_ORDER+3)/2];
int FIR16_LPF_TEST[FIR_ORDER+1]; // Temporary buffer for adjust odd order FIR
// coefficients
float RadStep = 0.1963495408494f;
float Rad = 0.0f;
int xn,yn;
int main(void) {
unsigned long i;
int *p;
int FIR_ORDER_REV;
//InitSysCtrl();
DisableDog();
p=(int *)coeff;
FIR_ORDER_REV=FIR_ORDER;
// FIR16_LPF_TEST initialization
//This buffer is only used to adjust odd order FIR filter to even order.
for(i=0;i<sizeof(FIR16_LPF32_TEST);i++)
{
FIR16_LPF_TEST[i]=FIR16_LPF32_TEST[i]; //Put coefficients into FIR16_LPF_TEST buffer
}
if(FIR_ORDER_REV%2!=0) // If ODD Order FIR
{
FIR16_LPF_TEST[FIR_ORDER_REV]=0; // Added one zero to the end of the coefficient
FIR_ORDER_REV=FIR_ORDER_REV+1; // order=order+1; order now becomes even number
}
/* FIR Generic Filter Initialisation */
fir.order=FIR_ORDER_REV;
fir.dbuffer_ptr=dbuffer;
fir.coeff_ptr=(long *)coeff;
fir.init(&fir);
//Clean up coeff buffer
for(i=0;i<FIR_ORDER_REV*2;i=i+2)
{
*(p+i)=0;
*(p+i+1)=0;
}
//Clean up delay buffer
for(i=0;i<FIR_ORDER_REV*2;i=i+1)
{
dbuffer[i]=0;
}
//Reorganize coefficient table
//If user would like to reorgainze the order of the coefficients outside this
//project, for example, in matlab and stored the reorganized coefficients in
//header file beforehand, this part is not necessarily.
//More details, please refer to Fixed Point DSP library manual
for(i=0;i<FIR_ORDER_REV;i=i+2)
{
*(p+FIR_ORDER_REV-i-2)=FIR16_LPF_TEST[i/2];
*(p+FIR_ORDER_REV-i-1)=FIR16_LPF_TEST[i/2+FIR_ORDER_REV/2];
}
// Generate sample waveforms:
Rad = 0.0f;
for(i=0; i < SIGNAL_LENGTH; i++)
{
sigIn[i] =0; //
sigOut[i] =0;
}
//FIR calculation
for(i=0; i < SIGNAL_LENGTH; i++)
{
xn=(int)(32768*(sin(Rad) + cos(Rad*2.3567))/2); //Q15
sigIn[i]=xn;
fir.input=xn;//0.5 Q15 format
fir.calc(&fir);
yn=fir.output;
sigOut[i]=yn;
Rad = Rad + RadStep;
}
while(1)
{
}
return 0;
}
