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How does charger detection get to the WPS?

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yapper:
On the 2G iPod, the charger connection doesn't appear to be detected. It was (still is?) a problem on the 4G (FS#5826 - no "charger status" in iPod 4g Gray) too.

I've worked out the GPIO inputs to monitor to detect external power, but I don't know what mechanism is used to pass this info to the WPS to allow the charger status to be displayed.

Can someone offer some pointers?

mcuelenaere:
Try firmware/target/arm/ipod/power-ipod.c

yapper:
Thanks for that. I've now got charger detection showing on the 2G WPS.

I also had to change config-ipod1g2g.h to #define CONFIG_CHARGING, but I'm not sure if CHARGING_MONITOR or CHARGING_SIMPLE is also required. Currently I'm using CHARGING_MONITOR.

What I can't find is a way to detect 'charging in progress' - again any pointers welcomed!  :)

mcuelenaere:

--- Quote from: yapper on August 17, 2008, 11:11:08 AM ---...
What I can't find is a way to detect 'charging in progress' - again any pointers welcomed!  :)

--- End quote ---
Did you already try 'bool charging_state(void)' in the same file?

BTW if you get it working, don't forget to post a patch in the Flyspray tracker so it can be committed to SVN.

yapper:

--- Quote from: mcuelenaere on August 17, 2008, 11:13:23 AM ---Did you already try 'bool charging_state(void)' in the same file?
--- End quote ---
Yes - I can force the 'charging' indication to appear on the WPS.
GPIOB bits 6 and 7, and GPIOC bit 7 all seem to indicate charger connected, but I can't see which GPIO bit indicates 'charging'.


--- Quote from: mcuelenaere on August 17, 2008, 11:13:23 AM ---BTW if you get it working, don't forget to post a patch in the Flyspray tracker so it can be committed to SVN.

--- End quote ---
Sure - I will.

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