how to get battery status ?

[steffi]

Hi,
I am working on leopard board DM355 with 2.6.10 linux kernel.I jst wanna read the status of battery. How ll i do it using a c program??
If anyone knows plz help me.

Thanks

[Rubberman]

Most of this stuff is accessible easily in the /proc directory tree, such as in the /proc/acpi/battery directory. More than that I can't say right now since I am running from a workstation/server with no battery resources.

[jayd512]

For me, in Slackware:

$ cat /proc/acpi/battery/BAT0/state

$ cat /proc/acpi/battery/BAT0/info

All battery information is found there.

[steffi]

I already checked that but in /proc/ directory there is no acpi.

[jayd512]

What is the output of

ls /proc/

[steffi]

output of
ls proc

1 3 buddyinfo execdomains locks stat
10 4 bus fb meminfo swaps
1050 5 cmdline filesystems misc sys
1052 691 cmem fs modules sysvipc
1092 736 config.gz gio mounts tty
1094 754 cpu interrupts mtd uptime
1109 94 cpuinfo iomem net version
1111 95 crypto ioports partitions vmstat
1114 954 devices kallsyms scsi yaffs
19 96 diskstats kmsg self
2 97 driver loadavg slabinfo


Now battery is not connected to the board but it will be adding later.

[jayd512]

You might have to dig a bit...
What about

cd /proc
ls -l

I'm thinking that devices might be the directory that you need to look at.
Dig around in there... let us know what you come up with.

[steffi]

Now there is no battery connected to our board but later on will be adding .

output of
cd /proc
ls -l

# ls -l
dr-xr-xr-x 3 root root 0 Jan 3 05:47 1
dr-xr-xr-x 3 root root 0 Jan 3 05:47 10
dr-xr-xr-x 3 root root 0 Jan 3 05:47 1050
dr-xr-xr-x 3 root root 0 Jan 3 05:47 1052
dr-xr-xr-x 3 root root 0 Jan 3 05:48 1092
dr-xr-xr-x 3 root root 0 Jan 3 05:48 1094
dr-xr-xr-x 3 root root 0 Jan 3 05:48 1109
dr-xr-xr-x 3 root root 0 Jan 3 05:47 1111
dr-xr-xr-x 3 root root 0 Jan 3 06:02 1116
dr-xr-xr-x 3 root root 0 Jan 3 05:47 19
dr-xr-xr-x 3 root root 0 Jan 3 05:47 2
dr-xr-xr-x 3 root root 0 Jan 3 05:47 3
dr-xr-xr-x 3 root root 0 Jan 3 05:47 4
dr-xr-xr-x 3 root root 0 Jan 3 05:47 5
dr-xr-xr-x 3 root root 0 Jan 3 05:47 691
dr-xr-xr-x 3 root root 0 Jan 3 05:47 736
dr-xr-xr-x 3 root root 0 Jan 3 05:47 754
dr-xr-xr-x 3 root root 0 Jan 3 05:47 94
dr-xr-xr-x 3 root root 0 Jan 3 05:47 95
dr-xr-xr-x 3 root root 0 Jan 3 05:47 954
dr-xr-xr-x 3 root root 0 Jan 3 05:47 96
dr-xr-xr-x 3 root root 0 Jan 3 05:47 97
-r--r--r-- 1 root root 0 Jan 3 06:02 buddyinfo
dr-xr-xr-x 3 root root 0 Jan 3 06:02 bus
-r--r--r-- 1 root root 0 Jan 3 06:02 cmdline
-r--r--r-- 1 root root 0 Jan 3 06:02 cmem
-r--r--r-- 1 root root 6446 Jan 3 06:02 config.gz
dr-xr-xr-x 2 root root 0 Jan 3 06:02 cpu
-r--r--r-- 1 root root 0 Jan 3 06:02 cpuinfo
-r--r--r-- 1 root root 0 Jan 3 06:02 crypto
-r--r--r-- 1 root root 0 Jan 3 06:02 devices
-r--r--r-- 1 root root 0 Jan 3 06:02 diskstats
dr-xr-xr-x 2 root root 0 Jan 3 06:02 driver
-r--r--r-- 1 root root 0 Jan 3 06:02 execdomains
-r--r--r-- 1 root root 0 Jan 3 06:02 fb
-r--r--r-- 1 root root 0 Jan 3 06:02 filesystems
dr-xr-xr-x 3 root root 0 Jan 3 06:02 fs
dr-xr-xr-x 2 root root 0 Jan 3 06:02 gio
-r--r--r-- 1 root root 0 Jan 3 06:02 interrupts
-r--r--r-- 1 root root 0 Jan 3 06:02 iomem
-r--r--r-- 1 root root 0 Jan 3 06:02 ioports
-r--r--r-- 1 root root 0 Jan 3 06:02 kallsyms
-r-------- 1 root root 0 Jan 3 06:02 kmsg
-r--r--r-- 1 root root 0 Jan 3 06:02 loadavg
-r--r--r-- 1 root root 0 Jan 3 06:02 locks
-r--r--r-- 1 root root 0 Jan 3 06:02 meminfo
-r--r--r-- 1 root root 0 Jan 3 06:02 misc
-r--r--r-- 1 root root 0 Jan 3 06:02 modules
lrwxrwxrwx 1 root root 11 Jan 3 06:02 mounts -> self/mounts
-r--r--r-- 1 root root 0 Jan 3 06:02 mtd
dr-xr-xr-x 5 root root 0 Jan 3 06:02 net
-r--r--r-- 1 root root 0 Jan 3 06:02 partitions
dr-xr-xr-x 2 root root 0 Jan 3 06:02 scsi
lrwxrwxrwx 1 root root 64 Jan 3 05:47 self -> 1116
-rw-r--r-- 1 root root 0 Jan 3 06:02 slabinfo
-r--r--r-- 1 root root 0 Jan 3 06:02 stat
-r--r--r-- 1 root root 0 Jan 3 06:02 swaps
dr-xr-xr-x 10 root root 0 Jan 3 06:02 sys
dr-xr-xr-x 2 root root 0 Jan 3 06:02 sysvipc
dr-xr-xr-x 4 root root 0 Jan 3 06:02 tty
-r--r--r-- 1 root root 0 Jan 3 06:02 uptime
-r--r--r-- 1 root root 0 Jan 3 06:02 version
-r--r--r-- 1 root root 0 Jan 3 06:02 vmstat
-r--r--r-- 1 root root 0 Jan 3 06:02 yaffs
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