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

#include "/sys/dev/iicbus/iic.h"

#include "tuner_ctrl.h"

int
main(int argc, char **argv)
{
	struct iiccmd cmd;
	char buf[16];
	float ofreq, freq;
	int fd;
	int i, rc = 0;

	if (argc < 2 || argc > 3)
		errx(1, "Usage: %s <iic device> [freq]", argv[0]);

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

	ofreq = freq = 0;

	if (argc == 3) {
		freq = strtof(argv[2], 0);
redo_one:
		if ( (i = set_channel(fd, freq, ofreq, 0)) != 0) {
			if (++rc < 3)
				goto redo_one;
			err(errno, "Error switching channels");
		}
		exit(0);
	}

	while (1) {
		ofreq = freq;

		printf("Enter scan frequency: ");
		if (scanf("%f", &freq) != 1) {
			if (feof(stdin)) {
				printf("\n");
				break;
			} else {
				fpurge(stdin);
				fprintf(stderr, "Invalid frequency\n");
				continue;
			}
		}

		rc = 0;
redo_two:
		if ( (i = set_channel(fd, freq, ofreq, 0)) != 0) {
			if (++rc < 3)
				goto redo_two;
			warn("Error switching channels");
		}
	}

	return 0;
}