Files
neutrino/src/shutdown_helper.c
svenhoefer c5b6543dee - shutdown_helper: better explanation of what the tool does; ...
small code re-formatting

Signed-off-by: Thilo Graf <dbt@novatux.de>
2017-11-27 20:37:27 +01:00

77 lines
1.5 KiB
C

/*
* shutdown_helper - send current time, wakeup time,
* led and bright settings to coolstream's frontpanel
* and switch off the box
*
* (C) 2013-2014 Stefan Seyfried
*
* License: GPLv2+
*/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <time.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <cs_frontpanel.h>
int main(int argc, char **argv)
{
int fd;
int leds;
int brightness;
fp_standby_data_t fp;
time_t timer_seconds;
time_t now = time(NULL);
struct tm *tmnow = localtime(&now);
time_t fp_timer = 0;
if (argc < 3)
{
fprintf(stderr, "need timer_seconds, led and brightness values\n");
return 1;
}
timer_seconds = atol(argv[1]);
leds = atoi(argv[2]);
brightness = atoi(argv[3]);
if (timer_seconds)
{
fp_timer = (timer_seconds - now) / 60;
if (fp_timer < 1)
{
fprintf(stderr, "warning: interval less than 1 minute (%d s) correcting\n", (int)(timer_seconds - now));
fp_timer = 1;
}
}
fprintf(stderr, "now: %ld, timer %ld, FP timer %ldmin\n", now / 60, timer_seconds / 60, fp_timer);
fp.brightness = brightness;
fp.flags = leds;
fp.current_hour = tmnow->tm_hour;
fp.current_minute = tmnow->tm_min;
fp.timer_minutes_hi = fp_timer >> 8;;
fp.timer_minutes_lo = fp_timer & 0xFF;
fd = open("/dev/display", O_RDONLY);
if (fd >= 0)
{
if (ioctl(fd, IOC_FP_STANDBY, (fp_standby_data_t *) &fp) == 0)
{
fprintf(stderr, "halt now\n");
while (1)
sleep(1);
}
else
perror("IOC_FP_STANDBY");
}
else
perror("/dev/display");
return 1;
}