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author | rodri <rgl@antares-labs.eu> | 2020-02-22 09:56:09 +0000 |
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committer | rodri <rgl@antares-labs.eu> | 2020-02-22 09:56:09 +0000 |
commit | a39951d8f69209cfea2b7051832b851914e662ef (patch) | |
tree | e4cd1c32e5d6f531b523f6fda558cc3a5f603547 /multibatt.c | |
download | brokentoys-a39951d8f69209cfea2b7051832b851914e662ef.tar.gz brokentoys-a39951d8f69209cfea2b7051832b851914e662ef.tar.bz2 brokentoys-a39951d8f69209cfea2b7051832b851914e662ef.zip |
now version controlled.
Diffstat (limited to 'multibatt.c')
-rw-r--r-- | multibatt.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/multibatt.c b/multibatt.c new file mode 100644 index 0000000..48d27c4 --- /dev/null +++ b/multibatt.c @@ -0,0 +1,30 @@ +#include <u.h> +#include <libc.h> + +char f[] = "/mnt/acpi/battery"; +char buf[512]; +char *s; +int nb = 0; + +void +main(void) +{ + int fd; + + fd = open(f, OREAD); + if(fd < 0) + sysfatal("open: %r"); + + read(fd, buf, sizeof buf); + + buf[strlen(buf)-1] = '\0'; + + print("%d\n", atoi(buf)); nb++; + for(s = buf; *s != '\0'; s++) + if(*s == '\n'){ + nb++; + print("%d\n", atoi(++s)); + } + print("batteries: %d\n", nb); + exits("done"); +} |