Real time clock with Oleg's firmware

[Oleg]

Could you please share your source?

Seems like you've expected preconfigured scl/sda gpios, which is in fact should not be touched by watchdog...

[andi]

Could you please share your source?

Ok, here it is. Note that I've already modified the code to the best of my knowledge to comply with your changed function calls.

Seems like you've expected preconfigured scl/sda gpios, which is in fact should not be touched by watchdog...

That might be true. I stopped thinking about whether or not I've implemented it correct when I got the response that the driver was working.

[Oleg]

Thanks. BTW, which RTC chip is used by WL-HDD?

[Oleg]

Here is it. Someone should try it.

[simplyred]

Thanks Oleg, it works:

[admin@WL-HDD harddisk]$ /tmp/harddisk/hwclock.sh --hctosys
Sun Nov 11 20:51:49 MEZ 2007


is it possible, to get it in the next Update for WL-HDD ?

[Oleg]

Yes, perhaps. Well, tried on my WL-700gE and it also works (the only change is SDA gpio pin). It use the same ricoh chip.

Well, looks like we need to make general purpose: i.e. allow to specify sda/scl as module parameters.

Btw, does 24h switch destroys current clock setting completely? Or just hour value?

[Oleg]

Also, this driver should have automatic devfs registration...

[andi]

Well, looks like we need to make general purpose: i.e. allow to specify sda/scl as module parameters.

That shouldn't be a problem to implement. I assume you can do this yourself .

Btw, does 24h switch destroys current clock setting completely? Or just hour value?

The switch to 24h mode doesn't really destroy the setting. Depending on the current time, it just leads to invalid time values within the chip. And according to the data sheet: "Any carry from lower digits with the writing of non-existent time may cause the time counters to malfunction." In any case, I don't think it's worth optimizing this, as it is only relevant the very first time you load the module.

Also, this driver should have automatic devfs registration...

The driver uses misc_register(), which already does devfs registration.

BTW.: Did you need to make any adjustments to my code, or was it already correct?

[wengi]

Hi all,

thanks for your great work!

Yes, perhaps. Well, tried on my WL-700gE and it also works (the only change is SDA gpio pin). It use the same ricoh chip.

The WL-700gE has a RTC? I have to update my HowTo.
Can anybody tell me if the new driver will work with an older oleg firmware?
I am not able to test it atm.

wengi

[andi]

Thanks. BTW, which RTC chip is used by WL-HDD?

Ricoh RV 5C386A