demo.ExesAndOhs

/*
 * demo.ExesAndOhs
 *
 * This demo cycles the display between an X and an O using two video buffers.
 *
 */

#ifndef DEMO_H_
#define DEMO_H_

#define	DEMO

#define	HOLD_FRAMES	30

int	letter;
int	numFrames;

unsigned char	display_buffer2[8 * 8 * 3];

void setup(void)
{
	// This code is invoked once to initialize the demo...
	numFrames = 0;
	letter = 1;

	txt_red = 0;
	txt_green = FULL_INTENSITY;
	txt_blue = 0;
	bg_red = 0;
	bg_green = 0;
	bg_blue = 0;

	bltChar(display_buffer, find_glyph('X'), 0, 0);
	bltChar(display_buffer2, find_glyph('O'), 0, 0);
}

void loop(void)
{
	// This code is invoked once each time the LEDs are scanned...
	if (numFrames > 0)
		{
		// Hold current image for some frames
		numFrames--;
		return;
		}
	numFrames = HOLD_FRAMES;

	// Go to next letter
	if (letter >= 1)
		letter = 0;
	else
		letter++;

	if (letter == 0)
		display_addr = display_buffer;
	else
		display_addr = display_buffer2;
}

#endif /* DEMO_H_ */