iriver h1x0 - RTC (real time clock) mod

[Davide-NYC]

Good news: driver with runtime detection is now in svn! No more patching rquired.

Sorry Mmmm - that means you need to adapt the REP again. Should be a simple fix though.

EDIT:

I have changed the wiki page a bit to clarify the two options and add the fact that the code is now in SVN. Please feel free to correct or improve it if you think something is not clear.

I just loaded the latest current build onto my Modded H120 and it is not showing me a RTC.

I cleared settings. It was working with a patched REP build. FYI.

[Llorean]

The code is in SVN now, but not in the default builds (since it adds 4k to the binary size).

If you compile yourself though, it's I believe just a case of changing a define in the target .h file from #if 0 to #if 1.

[Davide-NYC]

Just noticed:

1 Mar 12:47   Linus Nielsen Feltzing    firmware/export/config-h120.h  [diff]
   H100: Disable RTC support by default, for now

Ooops  

My dev environment went poof a while back so I'll just an old custom build I got from roolku.

Sorry for the false alarm!  

[pixelma]

The code is in CVS now, but not in the default builds (since it adds 4k to the binary size).

First it was 6k but... I think the more important reason was that all H1x0 (regardless of mod) had gotten the clock plugin for example.

[Llorean]

Yeah, that is an important point, people ending up with plugins they can't use.

[luminol]

I installed DS3231 on H120.
It was a pleasant work process to be excited at!

This RTC is very precise.
(Is influence to battery slight?)

I thank roolku, jmdearras and people of "Team RTC".  

[syrou]

I have also installed the RTC chip, pretty easy stuff if you have ever modded a PS2  

Just recommend to any of you that are going to mod the player that you use AWG30 wrapping wire to solder connections between chip and motherboard. Don't have to worry about Vcc/GND pins because it has an active current (Icc) of just 0.1mA  

I have use double sided fixing tape to "glue" the chip to the motherboard, and have put it upwards (as recommended in the wiki). It's a pity that autodetection code has been taken out from the code.

[roolku]

Congratulations to the two new successful modders. I have added you to the wiki table:

http://www.rockbox.org/twiki/bin/view/Main/RTCModH1x0#User_Experiences

(if anyone is misrepresented, please correct the entry)

Roolku

[TaperChuck]

Don't forget to move your clocks ahead one hour for Daylight Savings Time, which started at 2:00 am in most US cities.

[syrou]

Don't forget to move your clocks ahead one hour for Daylight Savings Time, which started at 2:00 am in most US cities.

Not yet here in Europe!   We move our clocks last sunday of March.

[TaperChuck]

Yeah, our politicians decided to move the date up a bit  

[Peter200lx]

Just wanted to report a successful upgrade from the old RTC chip to the new one. ie, Now I don't have to worry about the play button lockup bug. Went quite smoothly, everything working great.

[crypt@]

I won't call it smoothly performed, as it took 8hrs and killed 4 * DS3231(SN#). 24AWG wires are still unmanagable on these weak SOIC legs. All 4 chips sustained broken pins while trying to fit the chip into position on the motherboard.

The successfully installed chip is a DS3231S#.

Instead of completely straighten the legs, I only straighten the ends such that it is still angled to the body, but when placed on the board, the legs do not touch the surface. And also it is installed face upwards.

After jamming the fifth chip into the iHP-140, and closed out, it could not power up on battery. It was fixed by plugging in the charger, then powered on.

[TaperChuck]

But, success in the end! Congrats!

[crypt@]

Just a thought, shuffle is seeded by Mersenne Twister dued to lack of RTC on h1X0. Now that RTC on iriver is possible, is there a chance that the RTC can be used to seed the shuffle list?