/*
 * This program extracts the a_pwr_thresholds[] table from one of Pirelli's
 * fw images and converts the numbers to decimal.
 */

#include <sys/types.h>
#include <sys/file.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

struct entry {
	u_char	mvolt[2];
	u_char	percent;
	u_char	pad;
};

struct entry array[21];

read_array_from_image(filename, offset_arg)
	char *filename, *offset_arg;
{
	int fd;

	fd = open(filename, O_RDONLY);
	if (fd < 0) {
		perror(filename);
		exit(1);
	}
	lseek(fd, strtoul(offset_arg, 0, 0), 0);
	read(fd, array, sizeof array);
	close(fd);
}

dump_array()
{
	int i;
	unsigned mvolt;

	for (i = 0; i < 21; i++) {
		mvolt = array[i].mvolt[0] | (array[i].mvolt[1] << 8);
		printf("%4u\t%u\n", mvolt, array[i].percent);
	}
}

main(argc, argv)
	char **argv;
{
	if (argc != 3) {
		fprintf(stderr, "usage: %s fw-image offset\n", argv[0]);
		exit(1);
	}
	read_array_from_image(argv[1], argv[2]);
	dump_array();
	exit(0);
}