[Clip+, Clip Zip, ClipV2, FuzeV2] Improve battery life, part 2

[asymsucon]

Results (v12):
1st (var. 1) Clip+
XM playback - crashes at 85 during load into dc_write_callback
86 works OK
Other formats (512k Opus and FLAC) crash at 85, but later, at about 2 mins into track
No reinits so far (0,0,0,0) on 86

2nd (var. 1) Clip+
Plays XM at 84, Opus/FLAC fails up until 87 with either dc_write_callback or:

Upon restart (and reset to 90), internal flash reinit on 6. May need more than 90 for stable operation.

3rd (var. 1) Clip+
At 82 no panic, but couldn't load XM (returned to menu) and logged
42 internal flash reinits
3 retry data
Unstable until 88, but at that level no reinits.

Should I test more Clips?

[johnb]

Reporting back on the clip+ variant 0:
It has run now for more than 12h @ 76, stats still at 0,0,0,0!

I then switched to 75. The display starts to flicker slightly (too low refresh rate?), but it is running now for 80min stats still @ 0,0,0,0.

[asymsucon]

johnb
What's the format of your files?

[johnb]

My interactive tests: flac, mp3 320kbit, opus 128kbit, some aac 128kbit.
The long playlist is mp3.

[asymsucon]

Could you try these in spare time?
http://www26.zippyshare.com/v/9VqYDNSp/file.html

Both may take a while to load (30-90 seconds)

[Mihail Zenkov]

Upon restart (and reset to 90), internal flash reinit on 6. May need more than 90 for stable operation.

Can you check what we should set (91-95) for this player?

Should I test more Clips?

We should find worst case for each player (name+variant). So first check player that need more than 90 and than check others with this value.
If you have clip+ variant 0 - try 76.

[Mihail Zenkov]

Reporting back on the clip+ variant 0:
It has run now for more than 12h @ 76, stats still at 0,0,0,0!

Good!

I then switched to 75. The display starts to flicker slightly (too low refresh rate?), but it is running now for 80min stats still @ 0,0,0,0.

With very low voltages we can have problem not only with internal flash but also with RAM (panics, freezes, screen corruption time to time).

Can you check other your players?

[johnb]

Mihail, I will test others (started clip+ var1), but I am visiting relatives and only have a few with me ;-)
I will stop trying with the var0 for now.

asymsucon
the files play fine with clip+ var0 @ 76. Stats @ 0.

[asymsucon]

Can you check what we should set (91-95) for this player?

Unfortunately, it won't be that easy. Now I can't access its internal flash at all.
All attempts on connecting it to PC end with this:

regardless on CVDD2 setting (tried 100 and 105)
Any idea what to do?

[Mihail Zenkov]

asymsucon
Is usb from bootloader (when player off - try hold select (middle button) and connect it to usb)  works?

[asymsucon]

asymsucon
Is usb from bootloader (when player off - try hold select (middle button) and connect it to usb)  works?

Yes, that work. "USB Input device" connected, but I can't access its flash.

[Mihail Zenkov]

Are you on linux?

[asymsucon]

Nope, on Win7 32bit.

[johnb]

My son's clip+ var1:
Played for hours without re-inits @ 87.
With 86 played for a while, but then got stuck when I tried to load a different song in the file browser.

A single event @ 87: crash (see pic4)

[Mihail Zenkov]

Nope, on Win7 32bit.

Can you see usb disk size? Original firmware also don't work?