diff options
Diffstat (limited to 'package/base-files/files')
| -rw-r--r-- | package/base-files/files/lib/functions/caldata.sh | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/package/base-files/files/lib/functions/caldata.sh b/package/base-files/files/lib/functions/caldata.sh index 5e969e3409..6862da7164 100644 --- a/package/base-files/files/lib/functions/caldata.sh +++ b/package/base-files/files/lib/functions/caldata.sh @@ -68,6 +68,21 @@ caldata_from_file() { caldata_die "failed to extract calibration data from $source" } +caldata_sysfsload_from_file() { + local source=$1 + local offset=$(($2)) + local count=$(($3)) + + # test extract to /dev/null first + dd if=$source of=/dev/null iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \ + caldata_die "failed to extract calibration data from $source" + + # can't fail now + echo 1 > /sys/$DEVPATH/loading + dd if=$source of=/sys/$DEVPATH/data iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null + echo 0 > /sys/$DEVPATH/loading +} + caldata_valid() { local expected="$1" local target=$2 |