Support and General Use > Hardware
Sansа Clip Zip - Improve battery life
saratoga:
Looking at the as3525 datasheet, I think we are clocking the DBOP too high due to increased PCLK, and the DBOP is accessed during LCD update, so lets try lowering it:
http://web.mit.edu/mgg6/www/rockbox-fuzev2_2.7z
saratoga:
Setting PCLK to 64MHz fixes the problem on my Clipv2.
Edit: Heres a Fuze v2 build with the lower clock. Would also be interesting to know if this one works:
http://web.mit.edu/mgg6/www/rockbox-fuzev2_64MHz.7z
Mihail Zenkov:
--- Quote from: saratoga on January 02, 2015, 01:36:56 AM ---Setting PCLK to 64MHz fixes the problem on my Clipv2.
--- End quote ---
Good. Did you try set bigger divider for DBOP with PCLK=96MHz?
--- Quote ---Edit: Heres a Fuze v2 build with the lower clock. Would also be interesting to know if this one works:
--- End quote ---
If I understood right, fuze v2 have problem only when boost = 0.
johnb:
--- Quote from: saratoga on January 01, 2015, 06:27:34 PM ---Constant CVDD1:
http://web.mit.edu/mgg6/www/rockbox-fuzev2.7z
--- End quote ---
Same behavior: scrolling through the main menu the screen freezes (to be more precise about 'freezing': screen doesn't change anymore, but could also be that the scroll wheel doesn't respond anymore. However, no other timeout kicks in, e.g. screen backlight or wheel light).
johnb:
--- Quote ---
If I understood right, fuze v2 have problem only when boost = 0.
--- End quote ---
For me, I have never seen it go to 0. In my report above in one case it always stayed at 1; when I saw the switching it was between 1 and 3.
frequency always at 192.
Edit: I just retested the 'Constant CVDD1' version: coming from the USB unplug, I am able to start a song from the Files menu. Going to Debug-> Frequency it is at 384 MHz and boost changes in a range from 0 to 5, but then after a while a crash with
SWI at 301c465c
pc: 301c465c sp: 300A6728
bt end
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