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

[asymsucon]

Experienced 3 dropouts with Opus today, usually at the end of tracks.

[Mihail Zenkov]

johnb, asymsucon:
Thanks for reports!

I update links in first post.

News:

UI freezes and sound dropouts should be complete eliminated.
Slightly lower power consumption.
New debug feature: you can check system > debug > sd retry stats. It show numbers of retry on data (read and write) and on reinit for internal flash and sd card.
If all ok, you should see all zeros except "SD card reinit" - it will be 1.

[asymsucon]

Thanks Mihail.
Loading IT modules with var. 5 takes much longer compared to both var. 4 and regular rockbox.
2 seconds with regular version, 5 seconds with var. 4 and over 15 seconds with var. 5

Got "125" SD Card reinits, all other values are 0

[Mihail Zenkov]

My mistake - I build v5 with values strongly optimized for my player. Upload v6 with more general/safe values.

[asymsucon]

It's not a problem. I can always use 2nd Clip+ for modules. As long as the tradeoff is better battery life, it's perfectly manageable. 
Did you manage to test the consumption at +6dB?

Thanks

[Mihail Zenkov]

It's not a problem. I can always use 2nd Clip+ for modules. As long as the tradeoff is better battery life, it's perfectly manageable. 

We will try tune consumption on each model later - after whole stabilization.

Did you manage to test the consumption at +6dB?

No, but I'll do it later. I want add more steps for scaling on high volume - so I'll return to measurements.

[asymsucon]

So values above +6dB are not entirely out of question? If so, I could just throw away my X3II  . As long as clip+ manages 1.5-1.6Vrms I don't need anything else for my high-impedance headphones.

I'll try var. 5 with other codecs once I return home

[Mihail Zenkov]

So values above +6dB are not entirely out of question?

No. It not possible without hardware modification.

Now in my patch I switch voltages once for each 3dB. But we can switch for each 1.5dB. So just more steps, better power saving, less delay on switching, but not more volume

I'll try var. 5 with other codecs once I return home

First try v6. Than we try tune it.

[asymsucon]

No change in loading IT modules, no other problems yet. Only I left it running inside my module folder and it drained the last 30% battery in very short time, but I guess that can be expected.

[Mihail Zenkov]

You still have many "SD Card reinits" ? Without sd card you have normal loading speed?

[asymsucon]

With SD card I still get 571 reinits on battery. On USB power none.
None also without SD card on battery.

[Mihail Zenkov]

http://knk.square7.ch/cvdd2/rockbox-clip+-cvdd2_scaling-7.zip
Probably we have some difference between clip+ and clip zip for PVDD2. I revert this changes,  but we should check it later.

[asymsucon]

Still 514 SD reinits on battery when playing IT.
Should I send you some files to check on your Zip?

[Mihail Zenkov]

You should send this player with sd card 
Can you check all others sd cards which you have?

[asymsucon]

OK, will do tomorrow.