Rockbox Development > New Ports
SanDisk Sansa c200v2, m200v4, clipv1, clipv2, clip+, and fuzev2
kugel.:
--- Quote from: FlynDice on February 11, 2009, 10:44:05 PM ---Does this bolster the LCD driver as the culprit?
--- End quote ---
Possibly. If the Fuze uses the same code, without problems, it really seems to be some lcd driver issue.
bertrik:
I enabled battery charging on the sansa clip today. The ams sansas use the same charge controller as the v1 sansas, so it wasn't actually that hard to add it. I didn't enable charging for other ams sansas yet, because each player probably needs its own settings (max. charge current and voltage), but it should be relatively easy to add once we have sufficient information.
What is needed for other ams sansa targets is the following:
* max charge current, this can be determined by measuring the current through the USB cable while it is charging in the OF (and the battery is still less than half full).
* max charge voltage, this can be determined by looking at the battery voltage in the battery debug menu, just after the OF has fully charged the battery.
* battery capacity, this can probably be determined by looking at the battery itself (there's probably already pictures of it in the wiki), from sandisk specifications or from the battery manufacturer.
FlynDice:
e280v2 Read off of battery label
P/N: 54-57-00046
3.7V
750mAh
saratoga:
--- Quote from: FlynDice on February 14, 2009, 09:20:09 PM ---e280v2 Read off of battery label
P/N: 54-57-00046
3.7V
750mAh
--- End quote ---
Thats the same battery as used in the V1.
--- Quote --- I didn't enable charging for other ams sansas yet, because each player probably needs its own settings (max. charge current and voltage), but it should be relatively easy to add once we have sufficient information.
--- End quote ---
The fuze uses another ATL battery, but the exact model appears to be custom. All ATL batteries are 0.5C recommended for charging, but I'm not sure what the capacity is. Based on volume, its about 600mAh, so maybe 150 mA would be safe until we find out the exact capacity.
bertrik:
I updated the SansaCharging page on the wiki with a table that summarises the battery properties / charge settings of the various sansa targets. Please update this as you find out new information.
I forgot one other thing: the battery voltage can be read back through several ADC channels, but some are more useful than others, for example on the c200 the true battery voltage cannot be read back at all (way too high), same problem on e200 but we can read the RTCSUP ADC channel there. So please experiment a bit with this too to find the most representative ADC channel for the battery voltage.
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