mainbackup.c

this is a routine to do int2bin printing

#include <stdio.h>
#include <stdlib.h>
#include <SDL/SDL.h>

unsigned long *framebuffer;
SDL_Surface *screen;

void fb()
{
screen=SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE);
framebuffer=(unsigned long *)screen->pixels;
}

void prints(int cx, int cy, char* text) {
    extern unsigned char font[];
    int x, y;
    char c;
    while (*text) {
        for (y = 0; y<=16; y++) {
            for (x = 0; x<=8; x++) {
                if(font[(*text)*16+y] & (1<<(8-x))) c = 0xff; else c = 0;
                framebuffer[(cy*16+y)*640+(cx*8+x)] = c;
            }
        }
        cx++;
        text++;
    }
}

unsigned long int2bin(int a)
{
unsigned char *c;
unsigned char buffer[40];
int clrcnt;
for(clrcnt=0;clrcnt<=31;clrcnt++)
{
buffer[clrcnt]=0;
}
int cnt;
for(cnt=0;cnt<=30;cnt++)
{
if(a & (1<<(30-cnt))) c='1'; else c='0';
buffer[cnt]=c;
}
return buffer;
}

doit()
{
SDL_Flip(screen);
unsigned long *P_GPIO=(unsigned long *)0x0804869c;
//prints(1, 2, "---DEBUG GPIO---");
prints(1, 3, int2bin(*P_GPIO));
//prints(31,3,"|");
doit();
}




int main()
{
fb();
doit();
}