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Altera_Forum
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15 years ago

NIOS II C code tips?

hey everybody I'm trying to make a PWM using NIOSII and SOPC and i have reached the point where i need to wright the C code for my model but i can't find any documentation describing how to do it...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

10x alot this was very helpful here's my final code

--- Quote Start ---

/*

PWM Code

*/

# include <stdio.h># include "system.h"# include"altera_avalon_pio_regs.h"

int alt_main()

{

int n; // PWM total period

int a; // PWM working period

int c=0; // internal counter

while(1)

{

n=IORD(PIO_0_BASE,0);// pio_0 (total period )

a=IORD(PIO_1_BASE,0);// pio_1 (on period)

if (n<a)

{

c=0;

IOWR(PIO_2_BASE,0,0);

}

if (n>=a)

{

c++;

if(c<a)

{

IOWR(PIO_2_BASE,0,1);

}

if(c>a && c<=n)

{

IOWR(PIO_2_BASE,0,0);

}

if(c>n)

{

c=0;

}

}

}

return 0;

}

--- Quote End ---