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Calypso modem usage
===================
On the Openmoko Freerunner phone, the Calypso modem is presented by
the kernel as serial device /dev/ttySAC0. To allow oFono to
autodetect and use this, a simple udev rule is needed:
KERNEL=="ttySAC0", ENV{OFONO_DRIVER}="calypso"
You can put this in any file in /lib/udev/rules.d. A logical choice
is the "55-openmoko-gta01-gta02.rules" file, if it exists in your
Freerunner distribution.
With this rule in place:
- oFono will detect the Calypso modem when it starts up, and the
`list-modems' test script will show this, but will not power it up
- the `enable-modem' test script can be used to power it up
- a subsequent `list-modems' will show lots of information, including
network registration.
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