RE: The way to install proper driver for 3G dongle in oFono
Hi Ying An,
>and what about the case when the SIM card is present, but PIN
locked?
>
>> According to the result, it might be interesting to send ATI when the
>> constructor plugin is probe by oFono.
>> Thus with +GCAP info we can decide which driver to use.
>
>Is sending +GCAP after ATI really a standard? Have we tried anything
>else besides Huawei or ZTE?
I tried with more dongles from different vendors, as attached table.
The scenarios include:
With valid sim card, sim card PIN locked, no sim card, sim card locked.
N(ROM) in table indicates the SIM in ROM already.
ATI command can always return GCAP content in all tests.
and what about other manufactures other than Huawei, ZTE and SpeedUp?
What about Sierra, Ericsson etc.?
>Also you do realize that the GAtChat object and thus the file
descriptor
>is owned by the modem plugin. The plugin itself is the only one that
>should do any kind of IO.
>
>So if we require to run ATI first to identify if we are GSM or CDMA,
>then this is a per modem manufacture specific detail. And we rather add
>a helper function like we did for CPIN polling that makes this easier.
>
In current code the 'driver' is hardcoded by comparing with vendor_list[].
So if it possible to break the step into several:
vendor_list[] in udevng just cares about vendor - by comparing vendor ID only,
and add all possible drivers according to that vendor - (for example add
WCDMA, CDMA2k, TDSCDMA, LTE ...drivers if Huawei dongle is plugged in),
and the probe interface in each driver does real probe work as to issue
ATI command to ensure only correct driver will be loaded?
As I said before, the only time IO can be started is when the ->enable()
callback of the modem plugin is called. Not a second earlier.
Regards
Marcel