/*
 * Copyright 1986 by Larry Campbell, 73 Concord Street, Maynard MA 01754 USA
 * (maynard!campbell).  You may freely copy, use, and distribute this software
 * subject to the following restrictions:
 *
 *  1)	You may not charge money for it.
 *  2)	You may not remove or alter this copyright notice.
 *  3)	You may not claim you wrote it.
 *  4)	If you make improvements (or other changes), you are requested
 *	to send them to me, so there's a focal point for distributing
 *	improved versions.
 *
 * John Chmielewski (tesla!jlc until 9/1/86, then rogue!jlc) assisted
 * by doing the System V port and adding some nice features.  Thanks!
 */

#include <stdio.h>
#include <ctype.h>
#include "x10.h"

extern int tty;

extern struct hstruct
    housetab[];

c_unit(argc, argv)
char *argv[];
{
register n;
int hcode, hletter, dim, bits;
unsigned char buf[6];

if (argc < 4 || argc > 5) usage(E_WNA);
hletter = argv[2][0];
if (isupper(hletter)) hletter = tolower(hletter);

bits = getunits(&argv[2][1]);

for (n = 0, hcode = -1; n < 16; n++)
    if (housetab[n].h_letter == hletter)
	{
	hcode = housetab[n].h_code;
	break;
	}
if (hcode == -1) error("invalid house code");

dim = dimstate(argv[3], (argc == 5) ? argv[4] : "");

buf[0] = DIRCMD;
buf[1] = dim;
buf[2] = hcode;
buf[3] = bits & 0xFF;;
buf[4] = bits >> 8;
buf[5] = CHKSUM(buf);

sendsync();
(void) write(tty, (char *) buf, sizeof(buf));
chkack();
chkrpt(0);
}