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nut/drivers/belkinunv.c

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Imported Upstream version 2.4.3
2010-03-25 23:20:59 +00:00
/* belkinunv.c - driver for newer Belkin models, such as "Belkin
Universal UPS" (ca. 2003)
Copyright (C) 2003 Peter Selinger <selinger@users.sourceforge.net>
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
*/
/* SOFT SHUTDOWN WORKAROUND
One problem with the Belkin Universal UPS is that it cannot enter a
soft shutdown (shut down until AC power returns) unless the
batteries are completely depleted. Thus, one cannot just shut off
the UPS after operating system shutdown; it will not come back on
when the power comes back on. The belkinunv driver should never be
used with the -k option. Instead, we provide a "standalone" mode
for this driver via some -x options, which is intended to be used
in startup and shutdown scripts. Please see the belkinunv(8) man
page for details.
VARIABLES:
battery.charge
battery.runtime
battery.voltage
battery.voltage.nominal
driver.version.internal
input.frequency
input.frequency.nominal e.g. 60 for 60Hz
input.sensitivity (RW) normal/medium/low
input.transfer.high (RW)
input.transfer.low (RW)
input.voltage
input.voltage.maximum
input.voltage.minimum
input.voltage.nominal
output.frequency
output.voltage
ups.beeper.status (RW) enabled/disabled/muted
ups.firmware
ups.load
ups.model
ups.power.nominal e.g. 800 for an 800VA system
ups.status
ups.temperature
ups.test.result
ups.delay.restart read-only: time to restart
ups.delay.shutdown read-only: time to shutdown
ups.type ONLINE/OFFLINE/LINEINT
COMMANDS:
beeper.disable
beeper.enable
beeper.mute
reset.input.minmax
shutdown.reboot shut down load immediately for 1-2 minutes
shutdown.reboot.graceful shut down load after 40 seconds for 1-2 minutes
shutdown.stayoff shut down load immediately and stay off
test.battery.start start 10-second battery test
test.battery.stop
test.failure.start start "deep" battery test
test.failure.stop
STATUS FLAGS:
OB load is on battery, including during tests
OFF load is off
OL load is online
ACFAIL AC failure
OVER overload
OVERHEAT overheat
COMMFAULT UPS Fault
LB low battery
CHRG charging
DEPLETED battery depleted
RB replace battery
*/
#include "main.h"
#include "serial.h"
#define DRIVER_NAME "Belkin 'Universal UPS' driver"
#define DRIVER_VERSION "0.07"
/* driver description structure */
upsdrv_info_t upsdrv_info = {
DRIVER_NAME,
DRIVER_VERSION,
"Peter Selinger <selinger@users.sourceforge.net>",
DRV_STABLE,
{ NULL }
};
/* somewhat arbitrary buffer size - the longest actually occuring
message is 18 bytes for the F6C800-UNV. But since message length is
arbitrary in principle, we allow for some extra bytes. */
#define MAXMSGSIZE 25
/* definitions of register numbers for Belkin UPS */
#define REG_VOLTRATING 0x01
#define REG_FREQRATING 0x02
#define REG_POWERRATING 0x03
#define REG_BATVOLTRATING 0x04
#define REG_XFER_LO 0x06
#define REG_XFER_LO_MAX 0x07
#define REG_XFER_LO_MIN 0x08
#define REG_XFER_HI 0x09
#define REG_XFER_HI_MAX 0x0a
#define REG_XFER_HI_MIN 0x0b
#define REG_VOLTSENS 0x0c
#define REG_UPSMODEL 0x0d
#define REG_UPSMODEL2 0x0e
#define REG_FIRMWARE 0x0f
#define REG_TESTSTATUS 0x10
#define REG_ALARMSTATUS 0x11
#define REG_SHUTDOWNTIMER 0x15
#define REG_RESTARTTIMER 0x16
#define REG_INPUTVOLT 0x18
#define REG_INPUTFREQ 0x19
#define REG_TEMPERATURE 0x1a
#define REG_OUTPUTVOLT 0x1b
#define REG_OUTPUTFREQ 0x1c
#define REG_LOAD 0x1e
#define REG_BATSTAT2 0x1f
#define REG_BATVOLT 0x20
#define REG_BATLEVEL 0x21
#define REG_UPSSTATUS 0x22
#define REG_BATSTATUS 0x23
#define REG_TIMELEFT 0x3f
/* flags for REG_UPSSTATUS */
#define US_ACFAILURE 0x0001
#define US_OVERLOAD 0x0010
#define US_OFF 0x0020
#define US_OVERHEAT 0x0040
#define US_UPSFAULT 0x0080
#define US_WAITING 0x2000
#define US_BUZZER 0x8000
/* flags for REG_BATSTATUS */
#define BS_LOW 0x04
#define BS_CHARGING 0x10
#define BS_ONBATTERY 0x20
#define BS_DEPLETED 0x40
#define BS_REPLACE 0x80
/* size of an array */
#define asize(x) ((int)(sizeof(x)/sizeof(x[0])))
const char *upstype[3] = {
"ONLINE",
"OFFLINE",
"LINEINT"
};
const char *voltsens[3] = {
"normal",
"medium",
"low"
};
const char *teststatus[6] = {
"no test performed",
"test passed",
"test failed",
"test failed",
"test aborted",
"test in progress"
};
#define ST_OFF 0
#define ST_ONLINE 1
#define ST_BATTERY 2
static const char *status[] = {
"UPS is off", /* ST_OFF */
"UPS is on AC power", /* ST_ONLINE */
"UPS is on battery" /* ST_BATTERY */
};
/* some useful strings */
#define ESC "\033"
#define COL0 ESC "[G" ESC "[K" /* terminal control: clear line */
static int minutil = -1;
static int maxutil = -1;
static int xfer_lo_min = -1;
static int xfer_lo_max = -1;
static int xfer_hi_min = -1;
static int xfer_hi_max = -1;
int instcmd(const char *cmdname, const char *extra);
static int setvar(const char *varname, const char *val);
/* ---------------------------------------------------------------------- */
/* a general purpose Belkin-specific function: */
/* calculate a Belkin checksum, i.e., add buf[0]...buf[n-1] */
static unsigned char belkin_checksum(unsigned char *buf, int n) {
int i, res;
res = 0;
for (i=0; i<n; i++) {
res += buf[i];
}
return res & 0xff;
}
/* ---------------------------------------------------------------------- */
/* some private functions for talking to the UPS - "driver mode"
versions. The functions in this section have _nut_ in their name,
and they use standard NUT components (including NUT error handling)
for file i/o. Note that stand-alone versions of these functions are
provided in the next section. */
/* open serial port and switch to "smart" mode */
static void belkin_nut_open_tty(void)
{
upsfd = ser_open(device_path);
ser_set_speed(upsfd, device_path, B2400);
/* must clear DTR and set RTS for 1 second for UPS to go to
"smart" mode */
ser_set_dtr(upsfd, 0);
ser_set_rts(upsfd, 1);
sleep(1);
ser_flush_io(upsfd);
}
/* receive Belkin message from UPS, check for well-formedness (leading
byte, checksum). Return length of message, or -1 if not
well-formed */
static int belkin_nut_receive(unsigned char *buf, int bufsize) {
int r;
int n=0;
int len;
/* read 0x7e */
if (n+1 > bufsize) {
return -1;
}
r = ser_get_buf_len(upsfd, &buf[0], 1, 3, 0);
if (r<0) {
upslog_with_errno(LOG_ERR, "Error reading from UPS");
return -1;
} else if (r==0) {
upslogx(LOG_ERR, "No response from UPS");
return -1;
} else if (buf[0]!=0x7e) {
upslogx(LOG_ERR, "Garbage read from UPS");
return -1;
}
n+=r;
/* read instruction, size, and register */
if (n+3 > bufsize) {
return -1;
}
r = ser_get_buf_len(upsfd, &buf[1], 3, 3, 0);
if (r!=3) {
upslogx(LOG_ERR, "Short read from UPS");
return -1;
}
n+=r;
len = buf[2];
/* read data and checksum */
if (n+len > bufsize) {
return -1;
}
r = ser_get_buf_len(upsfd, &buf[4], len, 3, 0);
if (r!=len) {
upslogx(LOG_ERR, "Short read from UPS");
return -1;
}
n+=r;
/* check checksum */
if (belkin_checksum(buf, len+3) != buf[len+3]) {
upslogx(LOG_ERR, "Bad checksum from UPS");
return -1;
}
return n;
}
/* read the value of a string register from UPS. Return NULL on
failure, else an allocated string. */
static char *belkin_nut_read_str(int reg) {
unsigned char buf[MAXMSGSIZE];
int len, r;
char *str;
/* send the request */
buf[0] = 0x7e;
buf[1] = 0x03;
buf[2] = 0x02;
buf[3] = reg;
buf[4] = 0;
buf[5] = belkin_checksum(buf, 5);
r = ser_send_buf(upsfd, buf, 6);
if (r<0) {
upslogx(LOG_ERR, "Failed write to UPS");
return NULL;
}
/* receive the answer */
r = belkin_nut_receive(buf, MAXMSGSIZE);
if (r<0) {
return NULL;
}
if ((buf[1]!=0x05 && buf[1]!=0x01) || buf[3] != reg) {
upslogx(LOG_ERR, "Invalid response from UPS");
return NULL;
}
if (buf[1]==0x01) {
return NULL;
}
/* convert the answer to a string */
len = buf[2]-1;
str = (char *)xmalloc(len+1);
memcpy(str, &buf[4], len);
str[len]=0;
return str;
}
/* read the value of an integer register from UPS. Return -1 on
failure. */
static int belkin_nut_read_int(int reg) {
unsigned char buf[MAXMSGSIZE];
int len, r;
/* send the request */
buf[0] = 0x7e;
buf[1] = 0x03;
buf[2] = 0x02;
buf[3] = reg;
buf[4] = 0;
buf[5] = belkin_checksum(buf, 5);
r = ser_send_buf(upsfd, buf, 6);
if (r<0) {
upslogx(LOG_ERR, "Failed write to UPS");
return -1;
}
/* receive the answer */
r = belkin_nut_receive(buf, MAXMSGSIZE);
if (r<0) {
return -1;
}
if ((buf[1]!=0x05 && buf[1]!=0x01) || buf[3] != reg) {
upslogx(LOG_ERR, "Invalid response from UPS");
return -1;
}
if (buf[1]==0x01) {
return -1;
}
/* convert the answer to an integer */
len = buf[2]-1;
if (len==1) {
return buf[4];
} else if (len==2) {
return buf[4] + 256*buf[5];
} else {
upslogx(LOG_ERR, "Invalid response from UPS");
return -1;
}
}
/* write the value of an integer register to UPS. Return -1 on
failure, else 0 */
static int belkin_nut_write_int(int reg, int val) {
unsigned char buf[MAXMSGSIZE];
int r;
/* send the request */
buf[0] = 0x7e;
buf[1] = 0x04;
buf[2] = 0x03;
buf[3] = reg;
buf[4] = val & 0xff;
buf[5] = (val>>8) & 0xff;
buf[6] = belkin_checksum(buf, 6);
r = ser_send_buf(upsfd, buf, 7);
if (r<0) {
upslogx(LOG_ERR, "Failed write to UPS");
return -1;
}
/* receive the acknowledgement */
r = belkin_nut_receive(buf, MAXMSGSIZE);
if (r<0) {
return -1;
}
if ((buf[1]!=0x02 && buf[1]!=0x01) || buf[3] != reg) {
upslogx(LOG_ERR, "Invalid response from UPS");
return -1;
}
if (buf[1]==0x01) {
return -1;
}
return 0;
}
/* ---------------------------------------------------------------------- */
/* some private functions for talking to the UPS - "standalone"
versions. The functions in this section have _std_ in their name,
and they do not use default NUT error handling (this would not be
desirable during standalone operation, i.e., when the -x wait
option is given). These functions also take an additional file
descriptor argument. */
/* Open and prepare a serial port for communication with a Belkin
Universal UPS. DEVICE is the name of the serial port. It will be
opened in non-blocking read/write mode, and the appropriate
communications parameters will be set. The device will also be
sent a special signal (clear DTR, set RTS) to cause the UPS to
switch from "dumb" to "smart" mode, and any pending data (=garbage)
will be discarded. After this call, the device is ready for reading
and writing via read(2) and write(2). Return a valid file
descriptor on success, or else -1 with errno set. */
static int belkin_std_open_tty(const char *device) {
int fd;
struct termios tios;
struct flock flock;
char buf[128];
int r;
/* open the device */
fd = open(device, O_RDWR | O_NONBLOCK);
if (fd == -1) {
return -1;
}
/* set communications parameters: 2400 baud, 8 bits, 1 stop bit, no
parity, enable reading, hang up when done, ignore modem control
lines. */
memset(&tios, 0, sizeof(tios));
tios.c_cflag = B2400 | CS8 | CREAD | HUPCL | CLOCAL;
tios.c_cc[VMIN] = 1;
tios.c_cc[VTIME] = 0;
r = tcsetattr(fd, TCSANOW, &tios);
if (r == -1) {
close(fd);
return -1;
}
/* signal the UPS to enter "smart" mode. This is done by setting RTS
and dropping DTR for at least 0.25 seconds. RTS and DTR refer to
two specific pins in the 9-pin serial connector. Note: this must
be done for at least 0.25 seconds for the UPS to react. Ignore
any errors, as this probably means we are not on a "real" serial
port. */
ser_set_dtr(upsfd, 0);
ser_set_rts(upsfd, 1);
/* flush both directions of serial port: throw away all data in
transit */
r = ser_flush_io(fd);
if (r == -1) {
close(fd);
return -1;
}
/* lock the port */
memset(&flock, 0, sizeof(flock));
flock.l_type = F_RDLCK;
r = fcntl(fd, F_SETLK, &flock);
if (r == -1) {
close(fd);
return -1;
}
/* sleep at least 0.25 seconds for the UPS to wake up. Belkin's own
software sleeps 1 second, so that's what we do, too. */
usleep(1000000);
/* flush incoming data again, and read any remaining garbage
bytes. There should not be any. */
r = tcflush(fd, TCIFLUSH);
if (r == -1) {
close(fd);
return -1;
}
r = read(fd, buf, 127);
if (r == -1 && errno != EAGAIN) {
close(fd);
return -1;
}
/* leave port in non-blocking state */
return fd;
}
/* blocking read with 1-second timeout (use non-blocking i/o) */
static int belkin_std_upsread(int fd, unsigned char *buf, int n) {
int count = 0;
int r;
int tries = 0;
while (count < n) {
r = read(fd, &buf[count], n-count);
if (r==-1 && errno==EAGAIN) {
/* non-blocking i/o, no data available */
usleep(100000);
tries++;
} else if (r == -1) {
return -1;
} else {
count += r;
}
if (tries > 10) {
return -1;
}
}
return count;
}
/* blocking write with 1-second timeout (use non-blocking i/o) */
static int belkin_std_upswrite(int fd, unsigned char *buf, int n) {
int count = 0;
int r;
int tries = 0;
while (count < n) {
r = write(fd, &buf[count], n-count);
if (r==-1 && errno==EAGAIN) {
/* non-blocking i/o, no data available */
usleep(100000);
tries++;
} else if (r == -1) {
return -1;
} else {
count += r;
}
if (tries > 10) {
return -1;
}
}
return count;
}
/* receive Belkin message from UPS, check for well-formedness (leading
byte, checksum). Return length of message, or -1 if not
well-formed */
static int belkin_std_receive(int fd, unsigned char *buf, int bufsize) {
int r;
int n=0;
int len;
/* read 0x7e */
if (n+1 > bufsize) {
return -1;
}
r = belkin_std_upsread(fd, &buf[0], 1);
if (r==-1 || buf[0]!=0x7e) {
return -1;
}
n+=r;
/* read instruction, size, and register */
if (n+3 > bufsize) {
return -1;
}
r = belkin_std_upsread(fd, &buf[1], 3);
if (r!=3) {
return -1;
}
n+=r;
len = buf[2];
/* read data and checksum */
if (n+len > bufsize) {
return -1;
}
r = belkin_std_upsread(fd, &buf[4], len);
if (r!=len) {
return -1;
}
n+=r;
/* check checksum */
if (belkin_checksum(buf, len+3) != buf[len+3]) {
return -1;
}
return n;
}
/* read the value of an integer register from UPS. Return -1 on
failure. */
static int belkin_std_read_int(int fd, int reg) {
unsigned char buf[MAXMSGSIZE];
int len, r;
/* send the request */
buf[0] = 0x7e;
buf[1] = 0x03;
buf[2] = 0x02;
buf[3] = reg;
buf[4] = 0;
buf[5] = belkin_checksum(buf, 5);
r = belkin_std_upswrite(fd, buf, 6);
if (r<0) {
return -1;
}
/* receive the answer */
r = belkin_std_receive(fd, buf, MAXMSGSIZE);
if (r<0) {
return -1;
}
if ((buf[1]!=0x05 && buf[1]!=0x01) || buf[3] != reg) {
return -1;
}
if (buf[1]==0x01) {
return -1;
}
/* convert the answer to an integer */
len = buf[2]-1;
if (len==1) {
return buf[4];
} else if (len==2) {
return buf[4] + 256*buf[5];
} else {
return -1;
}
}
/* write the value of an integer register to UPS. Return -1 on
failure, else 0 */
static int belkin_std_write_int(int fd, int reg, int val) {
unsigned char buf[MAXMSGSIZE];
int r;
/* send the request */
buf[0] = 0x7e;
buf[1] = 0x04;
buf[2] = 0x03;
buf[3] = reg;
buf[4] = val & 0xff;
buf[5] = (val>>8) & 0xff;
buf[6] = belkin_checksum(buf, 6);
r = belkin_std_upswrite(fd, buf, 7);
if (r<0) {
return -1;
}
/* receive the acknowledgement */
r = belkin_std_receive(fd, buf, MAXMSGSIZE);
if (r<0) {
return -1;
}
if ((buf[1]!=0x02 && buf[1]!=0x01) || buf[3] != reg) {
return -1;
}
if (buf[1]==0x01) {
return -1;
}
return 0;
}
/* ---------------------------------------------------------------------- */
/* "standalone" program executed when driver is called with the '-x
wait' or '-x wait=<level>' flag or option */
/* this function updates the status line, as specified by the smode
parameter (0=silent, 1=normal, 2=dumbterminal). This is only done
if the status has not changed from the previous call */
static void updatestatus(int smode, const char *fmt, ...) {
char buf[1024]; /* static string limit is OK */
static char oldbuf[1024] = { 0 };
static int init = 1;
va_list ap;
if (smode==0) {
return;
}
if (init) {
init = 0;
oldbuf[0] = 0;
}
/* read formatted argument string */
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
buf[sizeof(buf)-1] = 0;
va_end(ap);
if (strcmp(oldbuf, buf)==0) {
return;
}
strcpy(oldbuf, buf);
if (smode==2) {
/* "dumbterm" version just prints a new line each time */
printf("%s\n", buf);
} else {
/* "normal" version overwrites same line each time */
printf(COL0 "%s", buf);
}
fflush(stdout);
}
/* switch from status line display to normal output mode */
static void endstatus(int smode) {
if (smode==1) {
fprintf(stdout, "\n");
fflush(stdout);
}
}
static int belkin_wait(void)
{
int level = 0; /* battery level to wait for */
int smode = 1; /* statusline mode: 0=silent, 1=normal, 2=dumbterm */
int nohang = 0; /* nohang flag */
int flash = 0; /* flash flag */
char *val;
int failcount = 0; /* count consecutive failed connection attempts */
int failerrno = 0;
int fd;
int r;
int bs, ov, bl, st;
/* read command line '-x' options */
val = getval("wait");
if (val) {
level = atoi(val);
}
if (dstate_getinfo("driver.flag.nohang")) {
nohang = 1;
}
if (dstate_getinfo("driver.flag.flash")) {
flash = 1;
}
if (dstate_getinfo("driver.flag.silent")) {
smode = 0;
} else if (dstate_getinfo("driver.flag.dumbterm")) {
smode = 2;
}
updatestatus(smode, "Connecting to UPS...");
failcount = 0;
fd = -1;
while (1) {
if (failcount >= 3 && nohang) {
endstatus(smode);
printf("UPS is not responding: %s\n", strerror(failerrno));
return 1;
} else if (failcount >= 3) {
updatestatus(smode, "UPS is not responding, will keep trying: %s", strerror(failerrno));
}
if (fd == -1) {
fd = belkin_std_open_tty(device_path);
}
if (fd == -1) {
failcount++;
failerrno = errno;
sleep(1);
continue;
}
/* wait until the UPS is online and the battery level
is >= level */
bs = belkin_std_read_int(fd, REG_BATSTATUS); /* battery status */
if (bs==-1) {
failcount++;
failerrno = errno;
close(fd);
fd = -1;
sleep(1);
continue;
}
ov = belkin_std_read_int(fd, REG_OUTPUTVOLT); /* output voltage */
if (ov==-1) {
failcount++;
failerrno = errno;
close(fd);
fd = -1;
sleep(1);
continue;
}
bl = belkin_std_read_int(fd, REG_BATLEVEL); /* battery level */
if (bl==-1) {
failcount++;
failerrno = errno;
close(fd);
fd = -1;
sleep(1);
continue;
}
/* successfully got data from UPS */
failcount = 0;
if (bs & BS_ONBATTERY) {
st = ST_BATTERY;
} else if (ov>0) {
st = ST_ONLINE;
} else {
st = ST_OFF;
}
updatestatus(smode, "%s, battery level: %d%%", status[st], bl);
if (st == ST_ONLINE && bl >= level) {
break;
}
sleep(1);
}
/* termination condition reached */
endstatus(smode);
if (flash) {
printf("Interrupting UPS load for ca. 2 minutes.\n");
r = belkin_std_write_int(fd, REG_RESTARTTIMER, 2);
if (r==0) {
r = belkin_std_write_int(fd, REG_SHUTDOWNTIMER, 1);
}
if (r) {
printf("Timed shutdown operation failed.\n");
close(fd);
return 2;
}
}
close(fd);
return 0;
}
/* ---------------------------------------------------------------------- */
/* functions which interface with main.c */
/* read all hardcoded info about this UPS */
void upsdrv_initinfo(void)
{
char *str;
int val;
int i;
/* read hard-wired values */
val = belkin_nut_read_int(REG_VOLTRATING);
if (val!=-1) {
dstate_setinfo("input.voltage.nominal", "%d", val);
}
val = belkin_nut_read_int(REG_FREQRATING);
if (val!=-1) {
dstate_setinfo("input.frequency.nominal", "%d", val);
}
val = belkin_nut_read_int(REG_POWERRATING);
if (val!=-1) {
dstate_setinfo("ups.power.nominal", "%d", val);
}
val = belkin_nut_read_int(REG_BATVOLTRATING);
if (val!=-1) {
dstate_setinfo("battery.voltage.nominal", "%d", val);
}
xfer_lo_max = belkin_nut_read_int(REG_XFER_LO_MAX);
xfer_lo_min = belkin_nut_read_int(REG_XFER_LO_MIN);
xfer_hi_max = belkin_nut_read_int(REG_XFER_HI_MAX);
xfer_hi_min = belkin_nut_read_int(REG_XFER_HI_MIN);
str = belkin_nut_read_str(REG_UPSMODEL);
if (str) {
dstate_setinfo("ups.model", "%s", str);
free(str);
}
val = belkin_nut_read_int(REG_FIRMWARE);
if (val!=-1) {
dstate_setinfo("ups.firmware", "%d", (val>>4) & 0xf);
dstate_setinfo("ups.type", "%s", upstype[(val & 0x0f) % 3]);
}
/* read writable values and declare them writable */
val = belkin_nut_read_int(REG_VOLTSENS);
if (val!=-1) {
dstate_setinfo("input.sensitivity", "%s", (val>=0 && val<asize(voltsens)) ? voltsens[val] : "?");
/* declare variable writable */
/* note: enumerated variables apparently don't need the ST_FLAG_STRING flag */
dstate_setflags("input.sensitivity", ST_FLAG_RW);
for (i=0; i<asize(voltsens); i++) {
dstate_addenum("input.sensitivity", "%s", voltsens[i]);
}
}
val = belkin_nut_read_int(REG_ALARMSTATUS);
if (val!=-1) {
dstate_setinfo("ups.beeper.status", "%s", val==1 ? "disabled" : val&1 ? "muted" : "enabled");
/* declare variable writable */
dstate_setflags("ups.beeper.status", ST_FLAG_RW);
dstate_addenum("ups.beeper.status", "enabled");
dstate_addenum("ups.beeper.status", "disabled");
dstate_addenum("ups.beeper.status", "muted");
}
val = belkin_nut_read_int(REG_XFER_LO);
if (val!=-1) {
dstate_setinfo("input.transfer.low", "%d", val);
/* declare variable writable */
dstate_setflags("input.transfer.low", ST_FLAG_RW);
if (xfer_lo_min != -1 && xfer_lo_max != -1) {
/* make it enumerated */
for (i=xfer_lo_min; i<=xfer_lo_max; i++) {
dstate_addenum("input.transfer.low", "%d", i);
}
}
}
val = belkin_nut_read_int(REG_XFER_HI);
if (val!=-1) {
dstate_setinfo("input.transfer.high", "%d", val);
/* declare variable writable */
dstate_setflags("input.transfer.high", ST_FLAG_RW);
if (xfer_hi_min != -1 && xfer_hi_max != -1) {
/* make it enumerated */
for (i=xfer_hi_min; i<=xfer_hi_max; i++) {
dstate_addenum("input.transfer.high", "%d", i);
}
}
}
/* declare handlers for instand commands and writable variables */
upsh.instcmd = instcmd;
upsh.setvar = setvar;
/* declare instant commands */
dstate_addcmd("test.failure.start");
dstate_addcmd("test.failure.stop");
dstate_addcmd("test.battery.start");
dstate_addcmd("test.battery.stop");
dstate_addcmd("beeper.disable");
dstate_addcmd("beeper.enable");
dstate_addcmd("beeper.mute");
dstate_addcmd("beeper.on");
dstate_addcmd("beeper.off");
dstate_addcmd("shutdown.stayoff");
dstate_addcmd("shutdown.reboot");
dstate_addcmd("shutdown.reboot.graceful");
dstate_addcmd("reset.input.minmax");
}
/* update whatever info we can */
void upsdrv_updateinfo(void)
{
int val, bs, us, ov;
/* first read "vital" flags */
us = belkin_nut_read_int(REG_UPSSTATUS); /* UPS status */
bs = belkin_nut_read_int(REG_BATSTATUS); /* battery status */
ov = belkin_nut_read_int(REG_OUTPUTVOLT); /* output voltage */
if (us==-1 || bs==-1 || ov==-1) {
upslogx(LOG_ERR, "Cannot read from UPS");
dstate_datastale();
return;
}
dstate_setinfo("output.voltage", "%.1f", 0.1*ov);
status_init();
if (bs & BS_ONBATTERY) {
status_set("OB"); /* on battery, including tests */
} else if (ov > 0) {
status_set("OL"); /* online */
} else {
status_set("OFF"); /* off */
}
if (us & US_ACFAILURE) {
status_set("ACFAIL"); /* AC failure, self-invented */
/* Note: this is not the same as "on battery", because this
flag makes sense even during a test, or when the load is
off. It simply reflects the status of utility power. A
"critical" situation should be OB && BL && ACFAIL. */
}
if (us & US_OVERLOAD) {
status_set("OVER"); /* overload */
}
if (us & US_OVERHEAT) {
status_set("OVERHEAT"); /* overheat, self-invented */
}
if (us & US_UPSFAULT) {
status_set("COMMFAULT"); /* UPS Fault */
}
if (bs & BS_LOW) {
status_set("LB"); /* low battery */
}
if (bs & BS_CHARGING) {
status_set("CHRG"); /* charging */
}
if (bs & BS_DEPLETED) {
status_set("DEPLETED"); /* battery depleted, self-invented */
}
if (bs & BS_REPLACE) {
status_set("RB"); /* replace battery */
}
status_commit();
/* new read everything else */
val = belkin_nut_read_int(REG_XFER_LO);
if (val!=-1) {
dstate_setinfo("input.transfer.low", "%d", val);
}
val = belkin_nut_read_int(REG_XFER_HI);
if (val!=-1) {
dstate_setinfo("input.transfer.high", "%d", val);
}
val = belkin_nut_read_int(REG_VOLTSENS);
if (val!=-1) {
dstate_setinfo("input.sensitivity", "%s", (val>=0 && val<asize(voltsens)) ? voltsens[val] : "?");
}
val = belkin_nut_read_int(REG_TESTSTATUS);
if (val!=-1) {
dstate_setinfo("ups.test.result", "%s", (val>=0 && val<asize(teststatus)) ? teststatus[val] : "?");
}
val = belkin_nut_read_int(REG_ALARMSTATUS);
if (val!=-1) {
dstate_setinfo("ups.beeper.status", "%s", val==1 ? "disabled" : val&1 ? "muted" : "enabled");
}
val = belkin_nut_read_int(REG_SHUTDOWNTIMER);
if (val!=-1) {
dstate_setinfo("ups.delay.shutdown", "%d", val);
}
val = belkin_nut_read_int(REG_RESTARTTIMER);
if (val!=-1) {
dstate_setinfo("ups.delay.restart", "%d", 60*val);
}
val = belkin_nut_read_int(REG_INPUTVOLT);
if (val!=-1) {
dstate_setinfo("input.voltage", "%.1f", 0.1*val);
/* UPS does not keep track of min/maxutil, but we can */
if (val>0 && (maxutil==-1 || val>maxutil)) {
maxutil = val;
}
if (val>0 && (minutil==-1 || val<minutil)) {
minutil = val;
}
dstate_setinfo("input.voltage.maximum", "%.1f", 0.1*maxutil);
dstate_setinfo("input.voltage.minimum", "%.1f", 0.1*minutil);
}
val = belkin_nut_read_int(REG_INPUTFREQ);
if (val!=-1) {
dstate_setinfo("input.frequency", "%.1f", 0.1*val);
}
val = belkin_nut_read_int(REG_TEMPERATURE);
if (val!=-1) {
dstate_setinfo("ups.temperature", "%d", val);
}
val = belkin_nut_read_int(REG_OUTPUTFREQ);
if (val!=-1) {
dstate_setinfo("output.frequency", "%.1f", 0.1*val);
}
val = belkin_nut_read_int(REG_LOAD);
if (val!=-1) {
dstate_setinfo("ups.load", "%d", val);
}
val = belkin_nut_read_int(REG_BATVOLT);
if (val!=-1) {
dstate_setinfo("battery.voltage", "%.1f", 0.1*val);
}
val = belkin_nut_read_int(REG_BATLEVEL);
if (val!=-1) {
dstate_setinfo("battery.charge", "%d", val);
}
val = belkin_nut_read_int(REG_TIMELEFT);
if (val!=-1) {
dstate_setinfo("battery.runtime", "%d", 60*val);
}
dstate_dataok();
}
/* tell the UPS to shut down, then return - DO NOT SLEEP HERE */
void upsdrv_shutdown(void)
{
/* Note: this UPS cannot (apparently) be put into "soft
shutdown" mode; thus the -k option should not normally be
used; instead, a workaround using the "-x wait" option
should be used; see belkinunv(8) for details.
In case somebody uses the -k option, the best we can do
here is a timed shutdown; this will wake up the attached
load after 10 minutes, come rain come shine. If AC power
does not return, this will probably lead to a few
shutdown/reboot cycles, until the batteries finally die and
possibly cause a system crash.
Don't use this! Use the solution involving the "-x wait"
option instead, as suggested on the belkinunv(8) man
page. */
upslogx(LOG_WARNING, "You are using the -k option, which is broken for this driver.\nShutting down for 10 minutes and hoping for the best");
belkin_nut_write_int(REG_RESTARTTIMER, 10); /* 10 minutes */
belkin_nut_write_int(REG_SHUTDOWNTIMER, 1); /* 1 second */
}
int instcmd(const char *cmdname, const char *extra)
{
int r;
/* We use test.failure.start to initiate a "deep battery test".
This does not really simulate a 'power failure', because we
won't start shutdown procedures during a test.
We use test.battery.start to initiate a "10-second battery test". */
if (!strcasecmp(cmdname, "beeper.off")) {
/* compatibility mode for old command */
upslogx(LOG_WARNING,
"The 'beeper.off' command has been renamed to 'beeper.disable'");
return instcmd("beeper.disable", NULL);
}
if (!strcasecmp(cmdname, "beeper.on")) {
/* compatibility mode for old command */
upslogx(LOG_WARNING,
"The 'beeper.on' command has been renamed to 'beeper.enable'");
return instcmd("beeper.enable", NULL);
}
if (!strcasecmp(cmdname, "test.failure.start")) {
r = belkin_nut_write_int(REG_TESTSTATUS, 2);
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "test.failure.stop")) {
r = belkin_nut_write_int(REG_TESTSTATUS, 3);
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "test.battery.start")) {
r = belkin_nut_write_int(REG_TESTSTATUS, 1);
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "test.battery.stop")) {
r = belkin_nut_write_int(REG_TESTSTATUS, 3);
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "beeper.disable")) {
r = belkin_nut_write_int(REG_ALARMSTATUS, 1);
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "beeper.enable")) {
r = belkin_nut_write_int(REG_ALARMSTATUS, 2);
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "beeper.mute")) {
r = belkin_nut_write_int(REG_ALARMSTATUS, 3);
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "shutdown.stayoff")) {
r = belkin_nut_write_int(REG_RESTARTTIMER, 0);
r |= belkin_nut_write_int(REG_SHUTDOWNTIMER, 1); /* 1 second */
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "shutdown.reboot")) {
/* restarttimer is in minutes, shutdowntimer is in
seconds. Still, restarttimer=1 is not safe,
because it might be decremented before
shutdowntimer is set, which would cause the UPS to
stay off. So we need restarttimer=2, which means,
the UPS will stay off between 60 and 120 seconds */
r = belkin_nut_write_int(REG_RESTARTTIMER, 2); /* 2 minutes */
r |= belkin_nut_write_int(REG_SHUTDOWNTIMER, 1); /* 1 second */
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "shutdown.reboot.graceful")) {
r = belkin_nut_write_int(REG_RESTARTTIMER, 2); /* 2 minutes */
r |= belkin_nut_write_int(REG_SHUTDOWNTIMER, 40); /* 40 seconds */
return STAT_INSTCMD_HANDLED; /* Future: failure if r==-1 */
}
if (!strcasecmp(cmdname, "reset.input.minmax")) {
minutil = maxutil = -1;
dstate_setinfo("input.voltage.maximum", "none");
dstate_setinfo("input.voltage.minimum", "none");
return STAT_INSTCMD_HANDLED;
}
upslogx(LOG_NOTICE, "instcmd: unknown command [%s]", cmdname);
return STAT_INSTCMD_UNKNOWN;
}
/* set a variable */
static int setvar(const char *varname, const char *val)
{
int i, r;
if (!strcasecmp(varname, "input.sensitivity")) {
for (i=0; i<asize(voltsens); i++) {
if (!strcasecmp(val, voltsens[i])) {
r = belkin_nut_write_int(REG_VOLTSENS, i);
return STAT_SET_HANDLED; /* Future: failure if r==-1 */
}
}
return STAT_SET_HANDLED; /* Future: failure */
} else if (!strcasecmp(varname, "ups.beeper.status")) {
if (!strcasecmp(val, "disabled")) {
i=1;
} else if (!strcasecmp(val, "on") ||
!strcasecmp(val, "enabled")) {
i=2;
} else if (!strcasecmp(val, "off") ||
!strcasecmp(val, "muted")) {
i=3;
} else {
i=atoi(val);
}
r = belkin_nut_write_int(REG_ALARMSTATUS, i);
return STAT_SET_HANDLED; /* Future: failure if r==-1 */
} else if (!strcasecmp(varname, "input.transfer.low")) {
r = belkin_nut_write_int(REG_XFER_LO, atoi(val));
return STAT_SET_HANDLED; /* Future: failure if r==-1 */
} else if (!strcasecmp(varname, "input.transfer.high")) {
r = belkin_nut_write_int(REG_XFER_HI, atoi(val));
return STAT_SET_HANDLED; /* Future: failure if r==-1 */
}
upslogx(LOG_NOTICE, "setvar: unknown var [%s]", varname);
return STAT_SET_UNKNOWN;
}
/* extra help text for "-h" option */
void upsdrv_help(void)
{
printf("\n");
printf("Writable variables:\n");
printf(" input.sensitivity: normal, medium, low\n");
printf(" ups.beeper.status: enabled, disabled, muted\n");
printf(" input.transfer.low: (in V)\n");
printf(" input.transfer.high: (in V)\n");
}
/* list flags and values that you want to receive via -x */
void upsdrv_makevartable(void)
{
/* allow '-x wait' and '-x wait=<level>' */
addvar(VAR_FLAG, "wait", "Wait for AC power ");
addvar(VAR_VALUE, "wait", "Wait for AC power and battery level");
/* allow '-x nohang' */
addvar(VAR_FLAG, "nohang", "In wait mode: quit if UPS dead ");
/* allow '-x flash' */
addvar(VAR_FLAG, "flash", "In wait mode: do brief shutdown ");
/* allow '-x silent' */
addvar(VAR_FLAG, "silent", "In wait mode: suppress status line ");
/* allow '-x dumbterm' */
addvar(VAR_FLAG, "dumbterm", "In wait mode: simpler status line ");
}
/* prep the serial port */
void upsdrv_initups(void)
{
/* If '-x wait' or '-x wait=<level>' option given, branch into
standalone behavior. */
if (getval("wait") || dstate_getinfo("driver.flag.wait")) {
exit(belkin_wait());
}
belkin_nut_open_tty();
}
void upsdrv_cleanup(void)
{
ser_close(upsfd, device_path);
}
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