Real time clock with Oleg's firmware

[hugo]

Hi,

I was wondering how I could get the hardware clock from my WL HDD using Oleg's latest firmwares. I can't see any /dev/rtc devices, but this is something in hardware. This would be very usefull for using the WL without any internet connection and still log correct timestamps.

Does it need a kernel module? I can find the one from WL-hdd root fs, but it doesn't create any devices (as splink_led)

[Oleg]

Yes, kernel module is required, but I've no idea how this works - probably they've changed something in the kernel.
The module itself contains bunch of code, which is providing I2C access via GPIO pins to the RTC.
Have you determined name of RTC chip?

BTW, I'm pretty sure, that this code is subject to GPL, but ASUS is violating it as USUAL.

[hugo]

Ok, here is the answer:

Use the module attached
insmod rtcdrv.o

then
mknod /dev/rtc c 12 0

Using cat /dev/rtc, you get the real time. Just have to set up some progs to use it, and maybe set this as an option in firmware?

[Alice]

should this work for wl-500g?

[root@WL500G:/]# insmod rtcdrv.o
rtcdrv.o: kernel-module version mismatch
rtcdrv.o was compiled for kernel version 2.4.5
while this kernel is version 2.4.20.
[root@WL500G:/]# insmod -f rtcdrv.o
Warning: kernel-module version mismatch
rtcdrv.o was compiled for kernel version 2.4.5
while this kernel is version 2.4.20
Warning: loading rtcdrv.o will taint the kernel: no license
See http://www.tux.org/lkml/#export-tainted for information about tainted modules
Warning: loading rtcdrv.o will taint the kernel: forced load
Module rtcdrv loaded, with warnings
[root@WL500G:/]# mknod /dev/rtc c 12 0
[root@WL500G:/]# cat /dev/rtc
20ff:7f:ff:ff:ff:ff:ff[root@WL500G:/]#

[Antiloop]

should this work for wl-500g?

no, the wl500g does not have a RTC

[hugo]

For the owners of Wl-HDD using Oleg firmwares, you don't have real time clock available. I still cannot set time (so you need to use normal Wl-hdd firmware for that), but here is an how -to to get your clock set on boot up if you are not connected to internet:

First read my previous post, and place the rtcdrv.o in a folder on hd.

You must also get the full busybox from the forum, or from the package (use ipkg.sh install busybox)
Check you can get awk working using busybox awk command.

Then edit your post-mount like this:

[admin@wl-hdd sbin]$ cat post-mount
#!/bin/sh
insmod /tmp/hd/wl-hdd/lib/modules/2.4.20/rtcdrv.o
mknod /dev/rtc c 12 0
date -s "`/tmp/hd/conf/bin/busybox awk 'BEGIN {FS=":"}; {print $2"/"$3"/"$1" "$5":"$6":"$7}' /dev/rtc`"

Be sure to change path to your module path.

I think date command is from the coreutils package. You might check compatibility with standard one.

Also, using sed might be lighter, not using the full busybox.
Also, use copy and paste, as i'm using 3 different quote types.