#include <sys/param.h>
#include <fcntl.h>
#include <stdio.h>
#include <err.h>

#include "/sys/dev/iicbus/iic.h"
#define EEPROM_WR_ADDR	0xA0
#define EEPROM_RD_ADDR	0xA1
#define COUNT		256

int
main(int argc, char **argv)
{
	int fd;
	struct iiccmd cmd;
	char buf[256];
	uint8_t i;

	if (argc != 2)
		errx(1, "Usage: %s <iic device>", argv[0]);

	if ( (fd = open(argv[1], O_RDWR)) < 0)
		err(1, "Opening device: %s", argv[1]);

	for (i=0; i < 255; ++i) {
		ioctl(fd, I2CSTOP, &cmd);
		usleep(1000);
		ioctl(fd, I2CRSTCARD, &cmd);
		usleep(1000);

		cmd.slave = i;
		cmd.count = 1;
		cmd.buf = buf; 
		cmd.last = 0;
		buf[0] = buf[1] = buf[2] = buf[3] = 0;

		if (ioctl(fd, I2CSTART, &cmd) == 0)
			warnx("Device at %d\n", i);
	}

	return 0;
}