Rockbox Development > New Ports

SanDisk Sansa c200v2, m200v4, clipv1, clipv2, clip+, and fuzev2

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funman:

--- Quote from: jago on May 31, 2009, 08:54:51 AM ---With recent revisions the radio of my e200 isn't working anymore.
If I switch to radio mode it shows only the status bar on top and freezes then.
After some investigation it seems that rev 21088 is messing something up.

--- End quote ---

r21088 changed the default cpufreq from 31 to 62, can you try to higher the delays in fmradio-i2c-as3525.c until radio works?

matsch:

--- Quote ---You should try earlier revisions (bissecting) until you get display working, or perhaps tweak the delays in firmware/target/arm/as3525/sansa-clip/lcd-ssd1303.c

--- End quote ---

Same result with r20834. I do not know what to tweak in lcd-ssd1303.c. This is
probably a HW issue.

Maybe my clip has a different OLED compared to others which needs a higher driver strength from SSD1303. How can I change the contrast or brightness to a higher value?
At least I can see the info on the screen with USB connected, but with very weak conatrast.

FlynDice:
jago:

I have an e280 and without the mmu operating the radio function works just fine.  When I enable the mmu I have the same problem you are having.  I have tried several values for fm_delay() with no luck yet.  Still trying.

sko:
Hmm... same problem as jago here: radio is not working on my e250v2 with clean r21151.

funman:

--- Quote from: matsch on May 31, 2009, 10:39:20 AM ---
--- Quote ---You should try earlier revisions (bissecting) until you get display working, or perhaps tweak the delays in firmware/target/arm/as3525/sansa-clip/lcd-ssd1303.c

--- End quote ---
Maybe my clip has a different OLED compared to others which needs a higher driver strength from SSD1303. How can I change the contrast or brightness to a higher value?
At least I can see the info on the screen with USB connected, but with very weak conatrast.

--- End quote ---

You can edit .rockbox/config.cfg and add a line:
contrast: 28


contrast value ranges from 0 to 50 (maximum)

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