_sim_pin was changed to pointer from array and length was checked with
strlen. If _sim_pin was null it caused crash. Fix by checking _sim_pin against NULL.
Power class could have been called without checking if power is NULL. Fix by checking
that power class is not null.
Fix state machine to return correct states when queried.
Generic cellular module (GENERIC_AT3GPP) can by used as a default
module when porting new cellular module. It's a good starting point
and eases porting of new modules. GENERIC_AT3GPP uses only standard
3GPP AT commands when communicating with the modem.
Change usage of AT_CellularContext::stack_type_supported to
AT_CellularBase::get_property. This way we can rid of
targets overriding stack_type_supported and delete
unnecessary classes and simplify new targets.
After AT_CellularNetwork::has_registration was replaced with
CellularProperties and better
AT_CellularNetwork::set_access_technology_impl default
implementation we can delete most of the target specific classes
that inherit AT_CellularNetwork.
-added an API for checking network eps ciot optimization support
-renamed the API for getting the UE parameters
-the API for setting the UE parameters includes now a callback, which
will be called once network support for eps ciot optimization is known
Moved methods to classes CellularDevice and CellularInformation.
SIM interface was removed to simplify cellular usage and
methods better suite new classes.
Updated greentea and unit tests.
The helper method call_network_cb, actually does a lot more than calling
the callback. The method has a check that the network status supplied
for the callback is different compared to the internal one. It also sets
the class member if it is changed. This is a bit surprising, given the
name of the method. It also means that it doesn't work in this call, as
the member is already set.
Add override for the virtual method get_connection_status() inherited
from NetworkInterface. The method in the base class returns
NSAPI_STATUS_ERROR_UNSUPPORTED. The CellularContext has the member
_connection_status, which means that we could return this.