Installation / Removal > Apple - Installation/Removal
Regarding ipodpatcher on a 5.5 iPod Video
torne:
I mean it takes 40 minutes in the Apple firmware, versus 8-10 hours in rockbox :)
Chauncellor:
uh.... I seriously don't think it's taken me that long ever. It's always been at most an hour. I haven't used the Apple firmware in forever.
I don't doubt that the problem is there, but I can't honestly look at my experiences and say that it's taken ten hours to charge the ipod. I've sat down at my computer between classes, plugged in the module with low battery, and by the time I leave again, it's near full.
Well, it doesn't matter. It'll get better for certain, so there's no use arguing how it is right now as it works fine for me!
torne:
No, if it works differently for you then that is *interesting* because that's a data point of it behaving differently. This is not an argument, this is me trying to find out if your device is behaving differently for some reason, so that I can take this into account when I work on fixing the (very real) issue with iPod USB charging :)
The behaviour I expect on the iPod Video is that when connected via USB it only draws 100mA at 5V from the host, regardless of whether that is a PC or a dumb USB charger. This is 500mW, not very much. The actual power required to run the player is then subtracted from that: this depends what you are doing with the player, and what the settings are, but if the player is just sitting there in Rockbox idle, it will draw 30-40mA. This only leaves at most 70mA (350mW) to charge the battery, which means it *should* take a very long time, a lot more than an hour. The original firmware instructs the power controller to draw 500mA, the full USB power, instead, which means that there is ~470mA left to charge with, a much more respectable 2.35W.
The Video has a current meter, which is available in the debug screen. Can you connect your ipod in charging-only mode (hold MENU) and then go into debug -> view battery, then scroll down with the wheel once? You should find a number labelled "Ibat" which is the amount of current currently flowing into (or out of, when not charging) the battery. What is that value for you while charging?
gevaerts:
--- Quote from: Chauncellor on January 14, 2010, 03:33:45 AM ---uh.... I seriously don't think it's taken me that long ever. It's always been at most an hour. I haven't used the Apple firmware in forever.
--- End quote ---
Which rockbox revision are you using? If it's one of the stable releases (3.x), it will switch to the Apple in-rom disk mode when plugged in, so the rockbox charging code is not used.
torne:
Forgot about that :)
If that's why then that's also why you don't notice USB transfers being slower, because you aren't using the Rockbox code for that either :)
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