/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: t; -*-
*
* megatec.c: support for Megatec protocol based UPSes
*
* Copyright (C) Carlos Rodrigues <carlos.efr at mail.telepac.pt>
*
* megatec.c created on 4/10/2003
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* A document describing the protocol implemented by this driver can be
* found online at "http://www.networkupstools.org/protocols/megatec.html".
*/
#include "main.h"
#include "serial.h"
#include "megatec.h"
#include <stdio.h>
#include <limits.h>
#include <string.h>
#include <stdlib.h>
#define ENDCHAR '\r'
#define IGNCHARS ""
#define RECV_BUFFER_LEN 128
/* The expected reply lengths */
#define F_CMD_REPLY_LEN 21
#define Q1_CMD_REPLY_LEN 46
#define I_CMD_REPLY_LEN 38
#define IDENT_MAXTRIES 5
#define IDENT_MINSUCCESS 3
#define SEND_PACE 100000 /* interval between chars on send (usec) */
#define READ_TIMEOUT 2 /* timeout on read (seconds) */
#define MAX_START_DELAY 9999
#define MAX_SHUTDOWN_DELAY 99
/* Maximum length of a string representing these values */
#define MAX_START_DELAY_LEN 4
#define MAX_SHUTDOWN_DELAY_LEN 2
#define N_FLAGS 8
/* The UPS status flags */
#define FL_ON_BATT 0
#define FL_LOW_BATT 1
#define FL_BOOST_TRIM 2
#define FL_FAILED 3
#define FL_UPS_TYPE 4
#define FL_BATT_TEST 5
#define FL_LOAD_OFF 6
#define FL_BEEPER_ON 7 /* bogus on some models */
/* Maximum lengths for the "I" command reply fields */
#define UPS_MFR_CHARS 15
#define UPS_MODEL_CHARS 10
#define UPS_VERSION_CHARS 10
/* The values returned by the UPS for an "I" query */
typedef struct {
char mfr[UPS_MFR_CHARS + 1];
char model[UPS_MODEL_CHARS + 1];
char version[UPS_VERSION_CHARS + 1];
} UPSInfo_t;
/* The values returned by the UPS for an "F" query */
typedef struct {
float volt;
float current;
float battvolt;
float freq;
} FirmwareValues_t;
/* The values returned by the UPS for an "Q1" query */
typedef struct {
float ivolt;
float fvolt;
float ovolt;
float load;
float freq;
float battvolt;
float temp;
char flags[N_FLAGS + 1];
} QueryValues_t;
/* Parameters for known battery types */
typedef struct {
int nominal; /* battery voltage (nominal) */
float min; /* lower bound for a single battery of "nominal" voltage (see "set_battery_params" below) */
float max; /* upper bound for a single battery of "nominal" voltage (see "set_battery_params" below) */
float empty; /* fully discharged battery */
float full; /* fully charged battery */
float low; /* low battery (unused) */
} BatteryVolts_t;
/* Known battery types must be in ascending order by "nominal" first, and then by "max". */
static BatteryVolts_t batteries[] = {{ 12, 9.0, 16.0, 9.7, 13.7, 0.0 }, /* Mustek PowerMust 600VA Plus (LB unknown) */
{ 12, 18.0, 30.0, 18.8, 26.8, 22.3 }, /* PowerWalker Line-Interactive VI 1000 */
{ 24, 18.0, 30.0, 19.4, 27.4, 22.2 }, /* Mustek PowerMust 1000VA Plus */
{ 36, 1.5, 3.0, 1.64, 2.31, 1.88 }, /* Mustek PowerMust 1000VA On-Line */
{ 36, 30.0, 42.0, 32.5, 41.0, 0.0 }, /* Mecer ME-2000 (LB unknown) */
{ 48, 38.0, 58.0, 40.0, 54.6, 44.0 }, /* Sven Smart RM2000 */
{ 96, 1.5, 3.0, 1.63, 2.29, 1.8 }, /* Ablerex MS3000RT (LB at 25% charge) */
{ 0, 0.0, 0.0, 0.0, 0.0, 0.0 }}; /* END OF DATA */
/* Defined in upsdrv_initinfo */
static float battvolt_empty = -1; /* unknown */
static float battvolt_full = -1; /* unknown */
/* Minimum and maximum voltage seen on input */
static float ivolt_min = INT_MAX; /* unknown */
static float ivolt_max = -1; /* unknown */
/* In minutes: */
static short start_delay = 2; /* wait this amount of time to come back online */
static short shutdown_delay = 0; /* wait until going offline */
/* In percentage: */
static float lowbatt = -1; /* disabled */
static char watchdog_enabled = 0; /* disabled by default, of course */
static char watchdog_timeout = 1; /* in minutes */
static char *copy_field(char* dest, char *src, int field_len);
static float get_battery_charge(float battvolt);
static int set_battery_params(float volt_nominal, float volt_now);
static int check_ups(void);
static int get_ups_info(UPSInfo_t *info);
static int get_firmware_values(FirmwareValues_t *values);
static int run_query(QueryValues_t *values);
int instcmd(const char *cmdname, const char *extra);
int setvar(const char *varname, const char *val);
/* I know, macros should evaluate their arguments only once */
#define CLAMP(x, min, max) (((x) < (min)) ? (min) : (((x) > (max)) ? (max) : (x)))
static char *copy_field(char* dest, char *src, int field_len)
{
int i, j;
/* First we skip the leading spaces... */
for (i = 0; i < field_len; i++) {
if (src[i] != ' ') {
break;
}
}
/* ... then we copy the rest of the field... */
j = 0;
while (i < field_len) {
dest[j] = src[i];
i++; j++;
}
dest[j] = '\0';
/* ...and finally, remove the trailing spaces. */
rtrim(dest, ' ');
return &src[field_len]; /* return the rest of the source buffer */
}
static float get_battery_charge(float battvolt)
{
float value;
if (battvolt_empty < 0 || battvolt_full < 0) {
return -1;
}
battvolt = CLAMP(battvolt, battvolt_empty, battvolt_full);
value = (battvolt - battvolt_empty) / (battvolt_full - battvolt_empty);
return value * 100; /* percentage */
}
/*
* Set the proper limits, depending on the battery voltage,
* so that the "charge" calculations return meaningful values.
*
* This has to be done by looking at the present battery voltage and
* the nominal voltage because, for example, some 24V models will
* show a nominal voltage of 24, while others will show a nominal
* voltage of 12. The present voltage helps telling them apart.
*/
static int set_battery_params(float volt_nominal, float volt_now)
{
int i = 0;
while (batteries[i].nominal > 0) {
if (volt_nominal == batteries[i].nominal) { /* battery voltage matches... */
while (volt_nominal == batteries[i].nominal) { /* ...find the most adequate parameters */
if (volt_now > batteries[i].min && volt_now < batteries[i].max) {
battvolt_empty = batteries[i].empty;
battvolt_full = batteries[i].full;
upsdebugx(1, "%.1fV battery, interval [%.1fV, %.1fV].", volt_nominal, battvolt_empty, battvolt_full);
return i;
}
i++;
}
upsdebugx(1, "%.1fV battery, present voltage (%.1fV) outside of supported intervals.", volt_nominal, volt_now);
return -1;
}
i++;
}
upsdebugx(1, "Unsupported battery voltage (%.1fV).", volt_nominal);
return -1;
}
static int check_ups(void)
{
char buffer[RECV_BUFFER_LEN];
int ret;
upsdebugx(2, "Sending \"Q1\" command...");
ser_send_pace(upsfd, SEND_PACE, "Q1%c", ENDCHAR);
ret = ser_get_line(upsfd, buffer, RECV_BUFFER_LEN, ENDCHAR, IGNCHARS, READ_TIMEOUT, 0);
if (ret < Q1_CMD_REPLY_LEN || buffer[0] != '(') {
upsdebugx(2, "Wrong answer to \"Q1\" command.");
return -1;
}
upsdebugx(2, "\"Q1\" command successful.");
return 0;
}
static int get_ups_info(UPSInfo_t *info)
{
char buffer[RECV_BUFFER_LEN];
char *anchor;
int ret;
upsdebugx(1, "Asking for UPS information (\"I\" command)...");
ser_send_pace(upsfd, SEND_PACE, "I%c", ENDCHAR);
ret = ser_get_line(upsfd, buffer, RECV_BUFFER_LEN, ENDCHAR, IGNCHARS, READ_TIMEOUT, 0);
if (ret < I_CMD_REPLY_LEN || buffer[0] != '#') {
upsdebugx(1, "UPS doesn't return any information about itself.");
return -1;
}
upsdebugx(3, "UPS information: %s", buffer);
memset(info, 0, sizeof(UPSInfo_t));
/*
* Get the manufacturer, model and version fields, skipping
* the separator character that sits between them, as well as
* the first character (the control character, always a '#').
*/
anchor = copy_field(info->mfr, &buffer[1], UPS_MFR_CHARS);
anchor = copy_field(info->model, anchor + 1, UPS_MODEL_CHARS);
copy_field(info->version, anchor + 1, UPS_VERSION_CHARS);
return 0;
}
static int get_firmware_values(FirmwareValues_t *values)
{
char buffer[RECV_BUFFER_LEN];
int ret;
upsdebugx(1, "Asking for UPS power ratings (\"F\" command)...");
ser_send_pace(upsfd, SEND_PACE, "F%c", ENDCHAR);
ret = ser_get_line(upsfd, buffer, RECV_BUFFER_LEN, ENDCHAR, IGNCHARS, READ_TIMEOUT, 0);
if (ret < F_CMD_REPLY_LEN || buffer[0] != '#') {
upsdebugx(1, "UPS doesn't return any information about its power ratings.");
return -1;
}
upsdebugx(3, "UPS power ratings: %s", buffer);
sscanf(buffer, "#%f %f %f %f", &values->volt, &values->current,
&values->battvolt, &values->freq);
return 0;
}
static int run_query(QueryValues_t *values)
{
char buffer[RECV_BUFFER_LEN];
char temperature[8];
int ret;
upsdebugx(1, "Asking for UPS status (\"Q1\" command)...");
ser_send_pace(upsfd, SEND_PACE, "Q1%c", ENDCHAR);
ret = ser_get_line(upsfd, buffer, RECV_BUFFER_LEN, ENDCHAR, IGNCHARS, READ_TIMEOUT, 0);
if (ret < Q1_CMD_REPLY_LEN || buffer[0] != '(') {
upsdebugx(1, "UPS doesn't return any information about its status.");
return -1;
}
upsdebugx(3, "UPS status: %s", buffer);
sscanf(buffer, "(%f %f %f %f %f %f %s %s", &values->ivolt, &values->fvolt, &values->ovolt,
&values->load, &values->freq, &values->battvolt, temperature, values->flags);
/*
* UPS temperature must be parsed on its own. Some models put
* something other than a float in this field, meaning there is no
* temperature reading available.
*/
values->temp = atof(temperature);
return 0;
}
void upsdrv_initinfo(void)
{
int i;
int success = 0;
FirmwareValues_t values;
QueryValues_t query;
UPSInfo_t info;
dstate_setinfo("driver.version.internal", "%s", DRV_VERSION);
/*
* UPS detection sequence.
*/
upsdebugx(1, "Starting UPS detection process...");
for (i = 0; i < IDENT_MAXTRIES; i++) {
upsdebugx(2, "Attempting to detect the UPS...");
if (check_ups() == 0) {
success++;
}
}
upsdebugx(1, "%d out of %d detection attempts failed (minimum failures: %d).",
IDENT_MAXTRIES - success, IDENT_MAXTRIES, IDENT_MAXTRIES - IDENT_MINSUCCESS);
if (success < IDENT_MINSUCCESS) {
if (success > 0) {
fatalx(EXIT_FAILURE, "The UPS is supported, but the connection is too unreliable. Try checking the cable for defects.");
} else {
fatalx(EXIT_FAILURE, "Megatec protocol UPS not detected.");
}
}
/*
* Try to identify the UPS.
*/
if (get_ups_info(&info) >= 0) {
char model[UPS_MODEL_CHARS + UPS_VERSION_CHARS + 2];
sprintf(model, "%s %s", info.model, info.version);
dstate_setinfo("ups.mfr", "%s", getval("mfr") ? getval("mfr") : info.mfr);
dstate_setinfo("ups.model", "%s", getval("model") ? getval("model") : model);
upslogx(LOG_INFO, "Megatec protocol UPS detected [%s %s %s].", info.mfr, info.model, info.version);
} else {
dstate_setinfo("ups.mfr", "%s", getval("mfr") ? getval("mfr") : "unknown");
dstate_setinfo("ups.model", "%s", getval("model") ? getval("model") : "unknown");
upslogx(LOG_INFO, "Megatec protocol UPS detected.");
}
dstate_setinfo("ups.serial", "%s", getval("serial") ? getval("serial") : "unknown");
/*
* Set battery-related values.
*/
if (get_firmware_values(&values) >= 0) {
dstate_setinfo("output.voltage.nominal", "%.1f", values.volt);
dstate_setinfo("battery.voltage.nominal", "%.1f", values.battvolt);
if (run_query(&query) < 0) {
fatalx(EXIT_FAILURE, "Error reading status from UPS!");
}
if (set_battery_params(values.battvolt, query.battvolt) < 0) {
upslogx(LOG_NOTICE, "This UPS has an unsupported combination of battery voltage/number of batteries.");
}
}
if (getval("battvolts")) {
upsdebugx(3, getval("battvolts"));
if (sscanf(getval("battvolts"), "%f:%f", &battvolt_empty, &battvolt_full) != 2) {
fatalx(EXIT_FAILURE, "Error in \"battvolts\" parameter.");
}
upslogx(LOG_NOTICE, "Overriding battery voltage interval [%.1fV, %.1fV].", battvolt_empty, battvolt_full);
}
if (battvolt_empty < 0 || battvolt_full < 0) {
upslogx(LOG_NOTICE, "Cannot calculate charge percentage for this UPS.");
}
if (getval("lowbatt")) {
if (battvolt_empty < 0 || battvolt_full < 0) {
upslogx(LOG_NOTICE, "Ignoring \"lowbatt\" parameter.");
} else {
lowbatt = CLAMP(atof(getval("lowbatt")), 0, 100);
}
}
/*
* Set the restart and shutdown delays.
*/
if (getval("ondelay")) {
start_delay = CLAMP(atoi(getval("ondelay")), 0, MAX_START_DELAY);
}
if (getval("offdelay")) {
shutdown_delay = CLAMP(atoi(getval("offdelay")), 0, MAX_SHUTDOWN_DELAY);
}
/*
* Register the available variables.
*/
dstate_setinfo("ups.delay.start", "%d", start_delay);
dstate_setflags("ups.delay.start", ST_FLAG_RW | ST_FLAG_STRING);
dstate_setaux("ups.delay.start", MAX_START_DELAY_LEN);
dstate_setinfo("ups.delay.shutdown", "%d", shutdown_delay);
dstate_setflags("ups.delay.shutdown", ST_FLAG_RW | ST_FLAG_STRING);
dstate_setaux("ups.delay.shutdown", MAX_SHUTDOWN_DELAY_LEN);
/*
* Register the available instant commands.
*/
dstate_addcmd("test.battery.start.deep");
dstate_addcmd("test.battery.start");
dstate_addcmd("test.battery.stop");
dstate_addcmd("shutdown.return");
dstate_addcmd("shutdown.stayoff");
dstate_addcmd("shutdown.stop");
dstate_addcmd("load.on");
dstate_addcmd("load.off");
dstate_addcmd("reset.input.minmax");
dstate_addcmd("reset.watchdog");
dstate_addcmd("beeper.toggle");
upsh.instcmd = instcmd;
upsh.setvar = setvar;
/* clean up a possible shutdown in progress */
ser_send_pace(upsfd, SEND_PACE, "C%c", ENDCHAR);
upsdebugx(1, "Done setting up the UPS.");
}
void upsdrv_updateinfo(void)
{
QueryValues_t query;
float charge;
if (run_query(&query) < 0) {
/*
* Query wasn't successful (we got some weird
* response), however we won't fatalx(EXIT_FAILURE, ) as this
* happens sometimes when the ups is offline.
*
* Some fault tolerance is good, we just assume
* that the UPS is just taking a nap. ;)
*/
dstate_datastale();
return;
}
dstate_setinfo("input.voltage", "%.1f", query.ivolt);
dstate_setinfo("input.voltage.fault", "%.1f", query.fvolt);
dstate_setinfo("output.voltage", "%.1f", query.ovolt);
dstate_setinfo("ups.load", "%.1f", query.load);
dstate_setinfo("input.frequency", "%.1f", query.freq);
dstate_setinfo("battery.voltage", "%.2f", query.battvolt);
dstate_setinfo("ups.temperature", "%.1f", query.temp);
charge = get_battery_charge(query.battvolt);
if (charge >= 0) {
dstate_setinfo("battery.charge", "%.1f", charge);
upsdebugx(3, "Charge: %.1f%%", charge);
}
status_init();
if (query.flags[FL_LOAD_OFF] == '1') {
status_set("OFF");
} else if (query.flags[FL_ON_BATT] == '1' || query.flags[FL_BATT_TEST] == '1') {
status_set("OB");
} else {
status_set("OL");
if (query.flags[FL_BOOST_TRIM] == '1') {
if (query.ivolt < query.ovolt) {
status_set("BOOST");
} else if (query.ivolt > query.ovolt) {
status_set("TRIM");
} else {
status_set("BYPASS");
}
}
}
/*
* If "lowbatt > 0", it becomes a "soft" low battery level
* and the hardware flag "FL_LOW_BATT" is always ignored.
*/
if ((lowbatt <= 0 && query.flags[FL_LOW_BATT] == '1') ||
(lowbatt > 0 && charge < lowbatt)) {
status_set("LB");
}
if (query.flags[FL_FAILED] == '1') {
status_set("FAILED");
}
status_commit();
dstate_setinfo("ups.beeper.status", query.flags[FL_BEEPER_ON] == '1' ? "enabled" : "disabled");
/* Update minimum and maximum input voltage levels only when on line */
if (query.flags[FL_ON_BATT] == '0') {
if (query.ivolt < ivolt_min) {
ivolt_min = query.ivolt;
}
if (query.ivolt > ivolt_max) {
ivolt_max = query.ivolt;
}
dstate_setinfo("input.voltage.minimum", "%.1f", ivolt_min);
dstate_setinfo("input.voltage.maximum", "%.1f", ivolt_max);
}
dstate_dataok();
}
void upsdrv_shutdown(void)
{
upslogx(LOG_INFO, "Shutting down UPS immediately.");
ser_send_pace(upsfd, SEND_PACE, "C%c", ENDCHAR);
ser_send_pace(upsfd, SEND_PACE, "S%02dR%04d%c", shutdown_delay, start_delay, ENDCHAR);
}
int instcmd(const char *cmdname, const char *extra)
{
char buffer[RECV_BUFFER_LEN];
/*
* Some commands are always supported by every UPS implementing
* the megatec protocol, but others may or may not be supported.
* For these we must check if the UPS returns something, which
* would mean the command is unsupported.
*/
if (strcasecmp(cmdname, "test.battery.start.deep") == 0) {
ser_send_pace(upsfd, SEND_PACE, "TL%c", ENDCHAR);
if (ser_get_line(upsfd, buffer, RECV_BUFFER_LEN, ENDCHAR, IGNCHARS, READ_TIMEOUT, 0) > 0) {
upslogx(LOG_NOTICE, "test.battery.start.deep not supported by UPS.");
} else {
upslogx(LOG_INFO, "Deep battery test started.");
}
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "test.battery.start") == 0) {
ser_send_pace(upsfd, SEND_PACE, "T%c", ENDCHAR);
if (ser_get_line(upsfd, buffer, RECV_BUFFER_LEN, ENDCHAR, IGNCHARS, READ_TIMEOUT, 0) > 0) {
upslogx(LOG_NOTICE, "test.battery.start not supported by UPS.");
} else {
upslogx(LOG_INFO, "Battery test started.");
}
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "test.battery.stop") == 0) {
ser_send_pace(upsfd, SEND_PACE, "CT%c", ENDCHAR);
if (ser_get_line(upsfd, buffer, RECV_BUFFER_LEN, ENDCHAR, IGNCHARS, READ_TIMEOUT, 0) > 0) {
upslogx(LOG_NOTICE, "test.battery.stop not supported by UPS.");
} else {
upslogx(LOG_INFO, "Battery test stopped.");
}
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "shutdown.return") == 0) {
ser_send_pace(upsfd, SEND_PACE, "C%c", ENDCHAR);
watchdog_enabled = 0;
ser_send_pace(upsfd, SEND_PACE, "S%02dR%04d%c", shutdown_delay, start_delay, ENDCHAR);
upslogx(LOG_INFO, "Shutdown (return) initiated.");
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "shutdown.stayoff") == 0) {
ser_send_pace(upsfd, SEND_PACE, "C%c", ENDCHAR);
watchdog_enabled = 0;
ser_send_pace(upsfd, SEND_PACE, "S%02dR0000%c", shutdown_delay, ENDCHAR);
upslogx(LOG_INFO, "Shutdown (stayoff) initiated.");
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "shutdown.stop") == 0) {
ser_send_pace(upsfd, SEND_PACE, "C%c", ENDCHAR);
watchdog_enabled = 0;
upslogx(LOG_INFO, "Shutdown canceled.");
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "load.on") == 0) {
ser_send_pace(upsfd, SEND_PACE, "C%c", ENDCHAR);
watchdog_enabled = 0;
upslogx(LOG_INFO, "Turning load on.");
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "load.off") == 0) {
ser_send_pace(upsfd, SEND_PACE, "C%c", ENDCHAR);
watchdog_enabled = 0;
ser_send_pace(upsfd, SEND_PACE, "S00R0000%c", ENDCHAR);
upslogx(LOG_INFO, "Turning load off.");
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "reset.input.minmax") == 0) {
ivolt_min = INT_MAX;
ivolt_max = -1;
dstate_setinfo("input.voltage.minimum", "%.1f", ivolt_min);
dstate_setinfo("input.voltage.maximum", "%.1f", ivolt_max);
upslogx(LOG_INFO, "Resetting minimum and maximum input voltage values.");
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "reset.watchdog") == 0) {
ser_send_pace(upsfd, SEND_PACE, "C%c", ENDCHAR);
ser_send_pace(upsfd, SEND_PACE, "S%02dR0001%c", watchdog_timeout, ENDCHAR);
if (watchdog_enabled) {
upsdebugx(2, "Resetting the UPS watchdog.");
} else {
watchdog_enabled = 1;
upslogx(LOG_INFO, "UPS watchdog started.");
}
return STAT_INSTCMD_HANDLED;
}
if (strcasecmp(cmdname, "beeper.toggle") == 0) {
ser_send_pace(upsfd, SEND_PACE, "Q%c", ENDCHAR);
upslogx(LOG_INFO, "Toggling UPS beeper.");
return STAT_INSTCMD_HANDLED;
}
upslogx(LOG_NOTICE, "instcmd: unknown command [%s]", cmdname);
return STAT_INSTCMD_UNKNOWN;
}
int setvar(const char *varname, const char *val)
{
int delay;
if (sscanf(val, "%d", &delay) != 1) {
return STAT_SET_UNKNOWN;
}
if (strcasecmp(varname, "ups.delay.start") == 0) {
delay = CLAMP(delay, 0, MAX_START_DELAY);
start_delay = delay;
dstate_setinfo("ups.delay.start", "%d", delay);
dstate_dataok();
return STAT_SET_HANDLED;
}
if (strcasecmp(varname, "ups.delay.shutdown") == 0) {
delay = CLAMP(delay, 0, MAX_SHUTDOWN_DELAY);
shutdown_delay = delay;
dstate_setinfo("ups.delay.shutdown", "%d", delay);
dstate_dataok();
return STAT_SET_HANDLED;
}
return STAT_SET_UNKNOWN;
}
void upsdrv_help(void)
{
}
void upsdrv_makevartable(void)
{
addvar(VAR_VALUE, "mfr", "Manufacturer name");
addvar(VAR_VALUE, "model", "Model name");
addvar(VAR_VALUE, "serial", "UPS serial number");
addvar(VAR_VALUE, "lowbatt", "Low battery level (%)");
addvar(VAR_VALUE, "ondelay", "Delay before UPS startup (minutes)");
addvar(VAR_VALUE, "offdelay", "Delay before UPS shutdown (minutes)");
addvar(VAR_VALUE, "battvolts", "Battery voltages (empty:full)");
megatec_subdrv_makevartable();
}
void upsdrv_banner(void)
{
printf("Network UPS Tools %s - Megatec protocol driver %s [%s]\n", UPS_VERSION, DRV_VERSION, progname);
printf("Carlos Rodrigues (c) 2003-2007\n\n");
megatec_subdrv_banner();
}
void upsdrv_initups(void)
{
upsfd = ser_open(device_path);
ser_set_speed(upsfd, device_path, B2400);
}
void upsdrv_cleanup(void)
{
ser_close(upsfd, device_path);
}
/* EOF - megatec.c */
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