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Rockbox Ports are now being developed for various digital audio players!

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Author Topic: Sansа Clip Zip - Improve battery life  (Read 81917 times)

Offline saratoga

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Re: Sansа Clip Zip - Improve battery life
« Reply #75 on: December 15, 2014, 01:41:49 PM »
Quote from: 404_user_not_found on December 15, 2014, 01:17:12 PM
Looks strange, but "improve_battery_life.patch" improves sometimes decode time and lowers MHZ needed for decoding (look for example vorbis_500.ogg). I can't understand, why player decodes sometimes faster with energy saving patch.

Faster PCLK means that the memory is running faster even when the CPU is running slower.

By the way, I'm assuming those builds aren't really 3.13?  Probably that patch wouldn't apply to it. 
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Offline 404_user_not_found

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Re: Sansа Clip Zip - Improve battery life
« Reply #76 on: December 16, 2014, 09:30:01 AM »
Quote from: saratoga on December 15, 2014, 01:41:49 PM
By the way, I'm assuming those builds aren't really 3.13?
It's a really the old stable 3.13, not a development build. Downloaded from http://download.rockbox.org/release/3.13/rockbox-3.13.7z

Quote from: saratoga on December 15, 2014, 01:41:49 PM
Probably that patch wouldn't apply to it.
Applies without any problem.
« Last Edit: December 16, 2014, 11:24:32 AM by 404_user_not_found »
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Offline 404_user_not_found

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Re: Sansа Clip Zip - Improve battery life
« Reply #77 on: December 18, 2014, 10:47:28 AM »
Quote from: 404_user_not_found on December 13, 2014, 01:43:25 AM
So, to be fully sure I will try a battery test.
Finally, I completed the battery runtime test.
Sansa Clip+ with a connected headphone sony mdr-zx300. Repeat track, flac -q8, stored in internal memory, SD card not connected, default settings.
10h 36m - Untouched rockbox version 3.13 without "improve_battery_life.patch"
17h 44m - Rockbox version 3.13 with "improve_battery_life.patch" (Patch set 5)
« Last Edit: December 18, 2014, 10:53:42 AM by 404_user_not_found »
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Offline Mihail Zenkov

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Re: Sansа Clip Zip - Improve battery life
« Reply #78 on: December 18, 2014, 11:32:59 AM »
Good!
Can you check how your player work with sd card? We have report from one user clip+  - it have problem with stability only when sd card inserted. In all other report from clip+/zip user all ok (with and without sd card).

Also if you want you can try on CVDD2 setting on clip+ - just remove #ifdef SANSA_CLIPZIP before it and #endif after it. This should slightly improve battery time on hour or two.

EDIT : better use git version rockbox as 3.13 have problem - usb controller consume quite match if you disconnect player without restart.
« Last Edit: December 18, 2014, 11:42:41 AM by Mihail Zenkov »
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Offline 404_user_not_found

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Re: Sansа Clip Zip - Improve battery life
« Reply #79 on: December 18, 2014, 12:04:55 PM »
Quote from: Mihail Zenkov on December 18, 2014, 11:32:59 AM
Good!
Can you check how your player work with sd card?
I just performed a runtime test without SD card for a new fresh sansa clip+.
For an old player, I tried from 13 December with 64 GB SD card up to today.  Works fine without any crash. May be it can help to trace a problem. I don't use a database. Most files contains a FLAC with CD Audio quality, rarely a lossy files. DSP is not turned on except volume. Volume is about -40db. SD Card formatted with MBR with huge cluster size available for FAT32.

Quote from: Mihail Zenkov on December 18, 2014, 11:32:59 AM
Also if you want you can try on CVDD2 setting on clip+ - just remove #ifdef SANSA_CLIPZIP before it and #endif after it. This should slightly improve battery time on hour or two.
I will try that option.

Quote from: Mihail Zenkov on December 18, 2014, 11:32:59 AM
usb controller consume quite match if you disconnect player without restart.
It's good to know. For runtime test I just for case performed a restart.
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Offline saratoga

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Re: Sansа Clip Zip - Improve battery life
« Reply #80 on: December 18, 2014, 12:19:30 PM »
Its also a waste of time to test 3.13 in general since its so old.  That's why I assumed you weren't actually using it before.
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Offline 404_user_not_found

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Re: Sansа Clip Zip - Improve battery life
« Reply #81 on: December 18, 2014, 01:19:02 PM »
Quote
Its also a waste of time to test 3.13 in general since its so old.
That version is stable, so I used 3.13 as a check point. May be because of that I don't have a problems with SD card. Will try also a git version and yours test builds.
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Offline saratoga

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Re: Sansа Clip Zip - Improve battery life
« Reply #82 on: December 18, 2014, 03:29:39 PM »
For rockbox stable just means that its an old build, not actually that its likely to work better or have less problems. 
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Offline Mihail Zenkov

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Re: Sansа Clip Zip - Improve battery life
« Reply #83 on: December 21, 2014, 01:22:00 PM »
saratoga:
I received a positive response from the user with problematic clip+. To resolve this we should slightly rise CVDD1 in normal mode -  (0x80 | 20).
Also I receive report about CVDD2 on clip+ - no problem, all work, but user not measure battery time.
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Offline saratoga

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Re: Sansа Clip Zip - Improve battery life
« Reply #84 on: December 21, 2014, 09:31:00 PM »
I tested a lot on the clip + and once I had it get in such a state where the UI lagged quite a lot such that it seemed like buttons weren't working for a bit. Pausing playback fixed it. I guess it was some problem with thread scheduling.  Otherwise its been fine.
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Offline 404_user_not_found

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Re: Sansа Clip Zip - Improve battery life
« Reply #85 on: December 22, 2014, 09:43:10 AM »
Quote from: saratoga on December 18, 2014, 03:29:39 PM
For rockbox stable just means that its an old build, not actually that its likely to work better or have less problems. 
But why it's called stable instead of old? For me stable means less likely to crash.

Quote from: saratoga on December 21, 2014, 09:31:00 PM
I tested a lot on the clip + and once I had it get in such a state where the UI lagged quite a lot such that it seemed like buttons weren't working for a bit.
I can confirm this in my old and new sansa clip+ after changes on CVDD2. For me it's unusable.

Quote from: Mihail Zenkov on December 21, 2014, 01:22:00 PM
saratoga:
Also I receive report about CVDD2 on clip+ - no problem, all work, but user not measure battery time.
I started a new runtime test with SD card. Need two days to complete (before and after changes on CVDD2).
« Last Edit: December 22, 2014, 09:46:11 AM by 404_user_not_found »
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Offline saratoga

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Re: Sansа Clip Zip - Improve battery life
« Reply #86 on: December 22, 2014, 01:02:11 PM »
Stable meaning unchanging not free of bugs. We fixed lots of stuff since 3.13 which is why its not useful to test it.
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Offline 404_user_not_found

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Re: Sansа Clip Zip - Improve battery life
« Reply #87 on: December 24, 2014, 11:14:22 AM »
Quote from: Mihail Zenkov on December 21, 2014, 01:22:00 PM
Also I receive report about CVDD2 on clip+ - no problem, all work, but user not measure battery time.
I can't complete the runtime test. My sansa clip+ just freezes after some hours because I found several times that my device is turned off with full battery and total time with some hours.
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Offline Mihail Zenkov

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Re: Sansа Clip Zip - Improve battery life
« Reply #88 on: December 24, 2014, 12:38:38 PM »
404_user_not_found:
Can you try slightly rise CVDD2 (change 111 to 112 or 113) and test runtime again?
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Offline 404_user_not_found

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Re: Sansа Clip Zip - Improve battery life
« Reply #89 on: December 25, 2014, 08:37:55 PM »
Quote from: Mihail Zenkov on December 24, 2014, 12:38:38 PM
404_user_not_found:
Can you try slightly rise CVDD2 (change 111 to 112 or 113) and test runtime again?
Yes, I can try.

Slightly increased CVDD2. Now player just don't play a music after some hours and I can't navigate in menu. Pressing a button just enables an OLED display but nothing else. Will try to continue increasing a CVDD2.
« Last Edit: December 26, 2014, 08:54:19 AM by 404_user_not_found »
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