Help me with C code for 8051

[dbju]

#include<stdio.h>
#include<conio.h>



main()
{
int n,a,p,q,r;
float l,b,a1,tri[1600],sum[1600],d,c,f,g1[1600],g2[1600],g3[1600],g4[1600];

c=(5*3.142)/180;
for(a1=0;a1<=180
{
a=2*a1;
b=(a1*3.142)/180;
d=b;
p=1;
q=1;
sum[a]=b;
for(p=1;p<21; )
{
d=(-1)*b*b*d;
p=p+2;
q=p*(p-1)*q;
sum[a]=sum[a]+d/q;
}


a1=a1+0.5;
}
for(n=0;n<=8;n++)
{
l=n*20;
for(a1=(l);a1<(l+5)
{
a=2*(a1);
r=((a1-l)*3.142)/180;

tri[a]=r/c;

a1=a1+0.5;
}
for(a1= (l+5);a1<(l+15)
{
a=2*(a1);
r=((a1-l)*3.142)/180;

tri[a]=(2-r/c);

a1=a1+0.5;
}
for(a1=(l+15);a1<(l+20)
{
a=2*(a1);
r=((a1-l)*3.142)/180;

tri[a]=(r/c-4);

a1=a1+0.5;
}
}
for(a1=0;a1<=180
{
a=2*a1;

if((sum[a]>tri[a]))

{g1[a]=1;

}
else
{
g1[a]=0;

}
a1=a1+0.5;
}
printf("\n");
for(a1=0;a1<=180
{
a=2*a1;
g2[a]=-sum[a];
if((g2[a]>tri[a]))

{g3[a]=1;

}
else
{
g3[a]=0;

}
a1=a1+0.5;
}
printf("\n");
for(a1=0;a1<=180
{
a=2*a1;
g4[a]=g1[a]-g3[a];
if(g4[a]>0)
P0=high;
else
po=low;
a1=a1+0.5;
}

getch();

}

 

[visva]

Re: 8051 + c programming

what you want reply? what is your question?

 

[dbju]

Re: 8051 + c programming

i want to generate a sine wave and a triangular wave in micro controller without using look up table since both these signals will be compared by logical program at each degree by which a pulse width modulated signal will be generated .i have already written a c program for the purpose now i want compiler of 8051 to do the remaining things. So i want this program to be converted into a 8051 based c programming with output pwm at output port P0 of 8051.

 

[yogece]

Re: 8051 + c programming

Do you want to generate PWM (Pulse Width Modulation) using 8051 microcontroller? if yes refer https://www.8051projects.net/pulse-width-modulation/

 

[dbju]

thanks but that link is showing the same link again and its a blank page

 

[internetuser2k12]

thanks but that link is showing the same link again and its a blank page

The link is working. https://www.8051projects.net/pulse-width-modulation/8051-pwm-example.php

 

[hate]

Using indenting, spacing and commenting may vastly help maintain and debug your code:

#include<stdio.h>
#include<conio.h>


int main()
{
	int n, a, p, q, r;
	float l, b, a1, tri[1600], sum[1600], d, c, f, g1[1600], g2[1600], g3[1600], g4[1600];


	c= (5* 3.142)/ 180;

	for(a1= 0; a1<= 180; a1+= 0.5) {
		a= 2* a1;
		b= (a1* 3.142)/ 180;
		d= b;
		p= 1;
		q= 1;
		sum[a]= b;

		for(p= 1; p< 21;) {
			d= (-1)* b* b* d;
			p+= 2;
			q= p* (p- 1)* q;
			sum[a]= sum[a]+ d/ q;
		}// for
	}// for

	for(n= 0; n<= 8; n++) {
		l= n* 20;

		for(a1= l; a1< (l+ 5); al+= 0.5) {
			a= 2* a1;
			r= ((a1- l)* 3.142)/ 180;
			tri[a]= r/ c;
		}// for

		for(a1= (l+ 5); a1< (l+ 15); a1+= 0.5) {
			a= 2* a1;
			r= ((a1- l)* 3.142)/ 180;
			tri[a]= (2- r/ c);
		}// for

		for(a1= (l+ 15); a1< (l+ 20); a1+= 0.5) {
			a= 2* a1;
			r= ((a1- l)* 3.142)/ 180;
			tri[a]= (r/ c- 4);
		}// for
	}// for

	for(a1= 0; a1<= 180; a1+= 0.5) {
		a= 2* a1;

		if(sum[a]> tri[a]) {
			g1[a]= 1;
		}// if
		else {
			g1[a]= 0;
		}// else
	}// for

	printf("\n");

	for(a1= 0; a1<= 180; a1+= 0.5) {
		a= 2* a1;
		g2[a]= -sum[a];

		if(g2[a]> tri[a]) {
			g3[a]= 1;
		}// if
		else {
			g3[a]= 0;
		}// else
	}// for

	printf("\n");

	for(a1= 0; a1<= 180; a1+= 0.5) {
		a= 2* a1;
		g4[a]= g1[a]- g3[a];

		if(g4[a]> 0)
			P0= high;
		else
			po= low;
	}// for

	getch();
}// main

Also be aware that to compile this code you'll need more than 9600*4= 38400 bytes of RAM. You might take that into consideration.