main.c.29

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/spi/spidev.h>
#include <string.h>
#include <math.h>

#include "rgblib.h"
#include "font.h"

void draw_char(unsigned int xo, char c);
void setpixel(int x, int y, unsigned char r, unsigned char g, unsigned char b);


unsigned int width;

int i;

unsigned int ctr;

int main(void){
	
	width = 40;
	ctr = 0;

	spi_init();	
		
	char text[] = "29c3";

	while(42){
		unsigned int tctr = 0;
		while (text[tctr]){
			draw_char((-ctr) + tctr*5,text[tctr]);
			tctr++;
		}	
			
		update();
		
		
		ctr++;
		//if (strlen(text)*4<width){
		//	if (ctr > width-1) ctr = 0;
		//}
		//else{
			//if (ctr > strlen(text)*4 + width) ctr = 0;
		//}
		usleep(30000);
	}
}


void draw_char(unsigned int xo, char c){
	int ix, iy;
	for(iy=0;iy<5;iy++){
		for(ix=0;ix<5;ix++){
			if(ix+xo < width | 1){
				unsigned char active = font[c][iy] & (1<<(ix+4));
				if(active >1) active = 1;
				setpixel(ix+xo,iy,active*(c*c)%127,active*(5*c)%127,0);
				//printf("%d",active);
			}	
		}
		//printf("\n");
	}
}

void setpixel(int x, int y, unsigned char r, unsigned char g, unsigned char b){
	
	unsigned int pos = y*width+(x%width);
	if (pos < LED_NUM){
		led_set(pos, r, g, b);
	}
}