Waveform Generation Using TMS320C6745 DSP

1. Waveform Generation
Using
TMS320C6745 DSP
https://www.pantechsolutions.net/products/dsp-
dsc-boards/tms320c6745-tyro

2. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
List Of Waveforms
• Sine Wave
• Square Wave
• Triangular Wave
• Saw tooth Wave

3. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
Program for Sine Wave Generation
#include<stdio.h>
#include<math.h>
#define PI 3.14
void main()
{
const float sampf = 1024000.0;// Sampling frquency is fixed
const int inpf = 4000; // change the input frquency from 1khz to 8khz(1000 to 8000)
float sampt;
double teta;
short value,*sinout;
int i,count,nsamp,value1;
sinout = (short *)0xc0000000;
sampt = 1/sampf;
nsamp = sampf/inpf;
for(i=0;i<400;i++)
*(sinout+i)=0;
for(count=0;count<nsamp;count++)
{
teta = (2 * PI * inpf * sampt * count);
value = sin(teta)*1024;
value1 = value&0x0000FFFF;
*sinout++ = value1;
}
}

4. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
Plot Settings for Sine Wave

5. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
Program for Square Wave Generation
#include <stdio.h>
#include <math.h>
void main()
{
int *Square;
int i;
Square = (int *)0xC0000000;
while(1)
{
for(i=0;i<50;i++)
{
*Square++ = 0x0000FFFF;
}
for(i=0;i<50;i++)
{
*Square++ = 0x0;
}
}
}

6. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
Plot Settings for Square Wave

7. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
Program for Triangular Wave Generation
#include <stdio.h>
#include <math.h>
void main()
{
int *Triangle;
int i=0,j=0;
Triangle = (int *)0xC0000000;
while(1)
{
for(i=0;i<50;i++)
{
j=j+1;
*Triangle++ = j;
}
for(i=50;i>0;i--)
{
j=j-1;
*Triangle++ = j;
}
}
}

8. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
Plot Settings for Triangular Wave

9. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
Program for Saw tooth Wave Generation
#include <stdio.h>
#include <math.h>
void main()
{
int *Sawtooth;
int i=0,j=0;
Sawtooth = (int *)0xC0000000;
while(1)
{
for(i=0;i<100;i++)
{
j=j+1;
*Sawtooth++ = j;
}
j=0;
i=0;
*Sawtooth++ = j;
}
}

10. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
Plot Settings for Saw tooth Wave

11. Technology beyond the Dreams™ Copyright © 2014 Pantech Prolabs India Pvt Ltd.
Thank You