Support and General Use > Hardware
iPod 5.5G w/CF card - bad battery or hardware issue?
LurkAzusa:
Forgive me for hijacking your thread to discuss the 4G, but maybe together we can get the ipod CF corrected.
These are the values set in firmware/target/arm/system-pp502x.c for the ipod 4G
#elif defined(IPOD_4G)
/* set minimum startup configuration */
DEV_EN = 0xc2020124;
DEV_EN2 = 0x00000000;
CACHE_PRIORITY = 0x0000003f;
GPO32_VAL = 0x02000000;
DEV_INIT1 = 0x00000000;
DEV_INIT2 = 0x40000000;
/* reset all allowed devices */
DEV_RS = 0x3ffdfef8;
DEV_RS2 = 0xffffffff;
DEV_RS = 0x00000000;
DEV_RS2 = 0x00000000;
The debug menu shows the following differences, with patch applied to remark out DEV_RS=0x3ffdfef8;
DEV_EN = C0031926
DEV_INIT1 = 00040000
DEV_RS = 00000000
DEV_RS2 = 00000000
With a patch applied to remark out the entire code above:
DEV_EN = C0831977
DEV_EN3 = 0007003F
DEV_INIT1=00040000
DEV_RS = 0000000
DEV_RS2 = 00000000
michaelc5047:
I put a 6gb microdrive in (as I don't have an original hard drive for this iPod) via the ZIF-to-CF connectior and ran a battery benchmark overnight using a fresh daily build and the same album on repeat that I used to test the iPod with the CF card. 9 hours 30 minutes with the microdrive, as compared to 9 hours 45 minutes with the CF card.
soap:
And with the original firmware you get...?
The best test of battery condition is still measuring life with the original firmware.
michaelc5047:
--- Quote from: soap on August 17, 2008, 01:59:49 PM ---And with the original firmware you get...?
The best test of battery condition is still measuring life with the original firmware.
--- End quote ---
Huh. I guess "not as much battery life as I think it should" is too subjective a statement, eh? Thanks. Will check it.
soap:
I agree 100% that the numbers you posted are lower than expected with a stock battery, much less a (supposedly) higher-capacity aftermarket one.
That being said:
1 - There are lots of **** quality aftermarket batteries floating around. Ones which aren't worth the postage they were shipped in.
2 - There are lots of fraudulently labeled, and plain ol' counterfit aftermarket batteries floating around.
3 - The only way to nail down the question (which I think is the underlying question here) "Is my battery dying already or has Rockbox regressed in terms of battery runtime?" is to test against a known benchmark - the Apple Original Firmware (R) (TM)
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