freebsd-dev/libexec/xtend/packet.c

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/*-
* Copyright (c) 1992, 1993, 1995 Eugene W. Stark
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* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Eugene W. Stark.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY EUGENE W. STARK (THE AUTHOR) ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char rcsid[] =
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"$FreeBSD$";
#endif /* not lint */
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#include <stdio.h>
#include <sys/time.h>
#include "xtend.h"
#include "xten.h"
char *X10housenames[] = {
"A", "B", "C", "D", "E", "F", "G", "H",
"I", "J", "K", "L", "M", "N", "O", "P",
NULL
};
char *X10cmdnames[] = {
"1", "2", "3", "4", "5", "6", "7", "8",
"9", "10", "11", "12", "13", "14", "15", "16",
"AllUnitsOff", "AllLightsOn", "On", "Off", "Dim", "Bright", "AllLightsOff",
"ExtendedCode", "HailRequest", "HailAcknowledge", "PreSetDim0", "PreSetDim1",
"ExtendedData", "StatusOn", "StatusOff", "StatusRequest",
NULL
};
/*
* Log a packet and update device status accordingly
*/
void
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logpacket(p)
unsigned char *p;
{
fprintf(Log, "%s: %s %s ", thedate(),
X10housenames[p[1]], X10cmdnames[p[2]]);
if(p[0] & TW_RCV_LOCAL) fprintf(Log, "(loc,");
else fprintf(Log, "(rem,");
if(p[0] & TW_RCV_ERROR) fprintf(Log, "err)");
else fprintf(Log, " ok)");
fprintf(Log, "\n");
}
/*
* Process a received packet p, updating device status information both
* in core and on disk.
*/
void
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processpacket(p)
unsigned char *p;
{
int i, j, h, k;
STATUS *s;
/*
* If the packet had the error flag set, there is no other useful info.
*/
if(p[0] & TW_RCV_ERROR) return;
/*
* First update in-core status information for the device.
*/
h = p[1]; k = p[2];
if(k < 16) { /* We received a unit code, to select a particular device */
s = &Status[h][k];
s->selected = SELECTED;
s->lastchange = time(NULL);
s->changed = 1;
} else { /* We received a key code, to execute some function */
/*
* Change in status depends on the key code received
*/
if(k == DIM) {
/*
* We can't really track DIM/BRIGHT properly the way things are right
* now. The TW523 reports the first, fourth, seventh, etc. Dim packet.
* We don't really have any way to tell when gaps occur, to cancel
* selection. For now, we'll assume that successive sequences of
* Dim/Bright commands are never transmitted without some other
* intervening command, and we make a good guess about how many units of
* dim/bright are represented by each packet actually reported by the
* TW523.
*/
for(i = 0; i < 16; i++) {
s = &Status[h][i];
switch(s->selected) {
case SELECTED: /* Selected, but not being dimmed or brightened */
if(s->onoff == 0) {
s->onoff = 1;
s->brightness = 15;
}
s->brightness -= 2;
if(s->brightness < 0) s->brightness = 0;
s->selected = DIMMING;
s->lastchange = time(NULL);
s->changed = 1;
break;
case DIMMING: /* Selected and being dimmed */
s->brightness -=3;
if(s->brightness < 0) s->brightness = 0;
s->lastchange = time(NULL);
s->changed = 1;
break;
case BRIGHTENING: /* Selected and being brightened (an error) */
s->selected = IDLE;
s->lastchange = time(NULL);
s->changed = 1;
break;
default:
break;
}
}
} else if(k == BRIGHT) {
/*
* Same problem here...
*/
for(i = 0; i < 16; i++) {
s = &Status[h][i];
switch(s->selected) {
case SELECTED: /* Selected, but not being dimmed or brightened */
if(s->onoff == 0) {
s->onoff = 1;
s->brightness = 15;
}
s->brightness += 2;
if(s->brightness > 15) s->brightness = 15;
s->selected = BRIGHTENING;
s->lastchange = time(NULL);
s->changed = 1;
break;
case DIMMING: /* Selected and being dimmed (an error) */
s->selected = IDLE;
s->lastchange = time(NULL);
s->changed = 1;
break;
case BRIGHTENING: /* Selected and being brightened */
s->brightness +=3;
if(s->brightness > 15) s->brightness = 15;
s->lastchange = time(NULL);
s->changed = 1;
break;
default:
break;
}
}
} else { /* Other key codes besides Bright and Dim */
/*
* We cancel brightening and dimming on ALL units on ALL house codes,
* because the arrival of a different packet indicates a gap that
* terminates any prior sequence of brightening and dimming
*/
for(j = 0; j < 16; j++) {
for(i = 0; i < 16; i++) {
s = &Status[j][i];
if(s->selected == BRIGHTENING || s->selected == DIMMING) {
s->selected = IDLE;
s->lastchange = time(NULL);
s->changed = 1;
}
}
}
switch(k) {
case ALLUNITSOFF:
for(i = 0; i < 16; i++) {
s = &Status[h][i];
s->onoff = 0;
s->selected = IDLE;
s->brightness = 0;
s->lastchange = time(NULL);
s->changed = 1;
}
break;
case ALLLIGHTSON:
/* Does AllLightsOn cancel selectedness of non-lights? */
for(i = 0; i < 16; i++) {
s = &Status[h][i];
if(s->devcap & ISLIGHT) {
s->onoff = 1;
s->selected = IDLE;
s->brightness = 15;
s->lastchange = time(NULL);
s->changed = 1;
}
}
break;
case UNITON:
for(i = 0; i < 16; i++) {
s = &Status[h][i];
if(s->selected == SELECTED) {
s->onoff = 1;
s->selected = IDLE;
s->brightness = 15;
s->lastchange = time(NULL);
s->changed = 1;
}
}
break;
case UNITOFF:
for(i = 0; i < 16; i++) {
s = &Status[h][i];
if(s->selected == SELECTED) {
s->onoff = 0;
s->selected = IDLE;
s->lastchange = time(NULL);
s->changed = 1;
}
}
break;
case ALLLIGHTSOFF:
/* Does AllLightsOff cancel selectedness of non-lights? */
for(i = 0; i < 16; i++) {
s = &Status[h][i];
if(s->devcap & ISLIGHT) {
s->onoff = 0;
s->selected = IDLE;
s->lastchange = time(NULL);
s->changed = 1;
}
}
break;
case EXTENDEDCODE:
break;
case HAILREQUEST:
for(i = 0; i < 16; i++) {
s = &Status[h][i];
if(s->selected == SELECTED) {
s->selected = HAILED;
s->lastchange = time(NULL);
s->changed = 1;
}
}
break;
case HAILACKNOWLEDGE:
/* Do these commands cancel selection of devices not affected? */
for(i = 0; i < 16; i++) {
s = &Status[h][i];
if(s->selected == HAILED) {
s->selected = IDLE;
s->lastchange = time(NULL);
s->changed = 1;
}
}
break;
case PRESETDIM0:
case PRESETDIM1:
/* I don't really understand these */
for(i = 0; i < 16; i++) {
s = &Status[h][i];
if(s->selected == SELECTED) {
s->selected = IDLE;
s->lastchange = time(NULL);
s->changed = 1;
}
}
break;
case EXTENDEDDATA:
/* Who knows? The TW523 can't receive these anyway. */
break;
case STATUSON:
for(i = 0; i < 16; i++) {
s = &Status[h][i];
if(s->selected == REQUESTED) {
s->onoff = 1;
s->selected = IDLE;
s->lastchange = time(NULL);
s->changed = 1;
}
}
break;
case STATUSOFF:
for(i = 0; i < 16; i++) {
if(s->selected == REQUESTED) {
s = &Status[h][i];
s->onoff = 0;
s->selected = IDLE;
s->brightness = 0;
s->lastchange = time(NULL);
s->changed = 1;
}
}
case STATUSREQUEST:
for(i = 0; i < 16; i++) {
s = &Status[h][i];
if(s->selected) {
s->selected = REQUESTED;
s->lastchange = time(NULL);
s->changed = 1;
}
}
break;
}
}
}
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}