GTA02 is now an expensive brick

Gothnet openmoko at nastylittlehorse.net
Tue Jan 6 14:55:00 CET 2009



Mike Montour wrote:
> 
> If you program the PCF50633 as:
>   - charger enabled
>   - 100mA current limit
>   - do not wake on USB insertion (avoids the brownout issue)
> 
> then it will have the behaviour that you want - even with a 
> completely-dead battery, you can plug it in and it will slow-charge the 
> battery in hardware. I think it still technically violates one of the 
> USB standards by drawing current without talking to the host, but IMHO 
> it's unlikely to cause any real-world problems.
> 

1. This really ought to be default behaviour, the current way is really
*really* bad.

2. Why stick to 100mA? I thought the USB standard was for ports to support
500mA?

3. I'm sure the FR doesn't need to negotiate with its charger.

4. How easy is it to make this change?

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