led.c

   1 /*
   2  *   This program is free software; you can redistribute it and/or modify
   3  *   it under the terms of the GNU General Public License as published by
   4  *   the Free Software Foundation; either version 2 of the License, or
   5  *   (at your option) any later version.
   6  *
   7  *   This program is distributed in the hope that it will be useful,
   8  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *   GNU General Public License for more details.
  11  *
  12  *   You should have received a copy of the GNU General Public License
  13  *   along with this program; if not, write to the Free Software
  14  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  15  *
  16  *   Provided by fon.com
  17  *   Copyright (C) 2009 John Crispin <blogic@openwrt.org>
  18  */
  19
  20
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <syslog.h>
  24 #include <unistd.h>
  25 #include "include/ucix.h"
  26 #include "include/log.h"
  27 #include "include/timer.h"
  28 #include "include/led.h"
  29
  30 char usbled[16];
  31
  32 void led_ping(void)
  33 {
  34         FILE *fp;
  35         static int last = 0;
  36         static struct uci_context *ctx;
  37         int mounted, count;
  38         int led = 1;
  39         char path[256];
  40         ctx = ucix_init("mountd");
  41         mounted = ucix_get_option_int(ctx, "mountd", "mountd", "mounted", 0);
  42         count = ucix_get_option_int(ctx, "mountd", "mountd", "count", 0);
  43         ucix_cleanup(ctx);
  44         if(!count)
  45                 led = 0;
  46         if(count && !mounted)
  47                 led = 1;
  48         if(count && mounted)
  49                 last = led = (last + 1) % 2;
  50         snprintf(path, 256, "/sys/class/leds/%s/brightness", usbled);
  51         fp = fopen(path, "w");
  52         if(fp)
  53         {
  54                 fprintf(fp, "%d", led);
  55                 fclose(fp);
  56         }
  57 }
  58
  59 void led_init(char *led)
  60 {
  61         if(led)
  62         {
  63                 strncpy(usbled, led, 16);
  64                 timer_add(led_ping, 1);
  65         }
  66 }