Current Bootchart / GSM power

Werner Almesberger werner at
Fri Jul 11 14:52:41 CEST 2008

Andy Green wrote:
> On GTA01 IIRC and certainly 02 there is a) what claims to be some kind
> of logical on / off switch in the form of an NPN transistor that goes
> into the GSM chipset,

This is quite literally the "on" button of the GSM subsystem. That
chipset is designed to be an entire feature phone, so you wouldn't
have that additional MCU. In this sort of standalone configuration,
PWON (which is where our NPN connects) would just be wired to the
phone's power button.

- Werner

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