view doc/Modem-operation @ 244:96784b8974eb

Switch_ON(): detect charging mode by CHGPRES bit Consider the following scenario: the phone is on, the user plugs in the charger, and then executes the power-off operation. In the Iota VRPC this sequence translates to a switch-off immediately followed by another switch-on - but the CHGSTS bit doesn't get set on the second switch-on cycle! Disassembly of Pirelli's fw shows that they check the CHGPRES bit, and furthermore, if both CHGPRES and ONBSTS are set, the code they pass to their modified Power_ON_Button() function is the one for charging - so let's adopt the same CHGPRES check and the same priority order for switch-on causes.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 03 May 2021 06:51:29 +0000
parents a62e5bf88434
children
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FC Tourmaline stdmodem functional configuration is equivalent to Magnetite
hybrid.  The only intentional diff from Magnetite to Tourmaline in the modem
configuration is the change of Nucleus: Magnetite uses the blob version of
Nucleus which came with TCS211-20070608, whereas Tourmaline uses the source
version of Nucleus by Comrade XVilka.  It is essentially a change from an
unknown version of Nucleus to a known one, thus it should generally be
considered an improvement - but as always with such changes, extensive
verification and testing needs to be done in order to ensure that nothing got
broken.

Aside from the one intentional change of Nucleus version, FC Tourmaline is an
entirely new firmware source tree, thus it is always possible that something
could have got broken unintentionally, particularly in rarely-tested areas of
the firmware.  Therefore, extensive testing will need to be done before we can
declare Tourmaline stdmodem as officially replacing Magnetite hybrid for stable
modem products.