Linear convolution using TMS320C6748 DSP platform:

Code Composer Studio Steps:

• Open code composer studio 

• Click on project and select New CCS project and configure as given below

• Give project name and click on finish button
• Write your code in that editor

•  Save your code using CTRL+S
• Select run menu and click on debug
• Then ,you will see following window 

•  Again select  run menu and click on resume
• Then you will get output window:

Code:

 /*Write a program to perform Linear convolution using TMS320C6748 DSP Platform*/

#include<stdio.h>
int y[7];
void main()
{
    int m=4; //Length of input sample sequence
    int n=4; // Length of impulse response Co-efficient
    int i,j;
    int x[7]={1,2,3,4};//Input signal sample
    int h[7]={4,3,2,1};//Impulse Response Co-efficient
            for(i=0;i<m+n-1;i++)
            {
                y[i]=0;
                for(j=0;j<=i;j++)
                {
                    y[i]+=x[j]*h[i-j];
                }

            }

   printf("Linear Convolution output\n:");
            for(i=0;i<m+n-1;i++)
            {
                printf("%d\n",y[i]);
            }
}

 /*Write a program to perform DFT using TMS320C6748 DSP Platform*/

#include<stdio.h>
#include<math.h>
void dft(float *x,short k);
#define N 3
float pi=3.1416;
float x[N]={0.25,0.25,0.25};
void dft(float *x,short k) //dft function
{
    float sumRe=0, sumIm=0; // init real/imag components
    float cs=0,sn=0; //init cosine/sine components
    int i=0;
    for (i=0;i<N;i++)// for N point DFT
    {
        cs=cos(2*pi*(k)*i/N);// real component
        sn=sin(2*pi*(k)*i/N);//imaginary component
        sumRe=sumRe+x[i]*cs;//sum of real components
        sumIm=sumIm-x[i]*sn;//sum of imaginary components
    }
    printf("%f\n",sumRe);
}
void main()
{
    int j;
    for(j=0;j<N;j++)
    {
        dft(x,j);// call DFT function
    }
}