AT_CellularContext::do_connect() is a virtual API and therefore can be overwritten in
inherited class. The problem was that it sets AT_CellularContext::_is_connected flag but
earlier it was set as private member making it impossible to set in overwritten do_connect()
method.
This commit fixes the problem by changing _is_connected as protected enabling its use
in inherited class.
CellularContext now tries to get an IP address after connect and before
sending NSAPI_STATUS_GLOBAL_UP. Even if we don't the IP address from
the modem we will send NSAPI_STATUS_GLOBAL_UP and return success.
Modem has an ip address but for some reason some modems don't
give it to us.
If delete fails there is nothing we or application can do. There is no point
returning an error for this. This affects to AT_CellularContext::disconnect
not returning an error if context delete fails.
Disconnect was sent to all CellularContext classes even it concerned
one specific context. Some disconnect events are still sent to all
context classes. These event are coming from network and ment for all
context classes or event did not specify cid.
State machine has retry logic until device is attached to network.
After this CellularContext does the context activation e.g. connect.
There was no retry logic for context activation. Added logic to
CellularContext level so it's available for at and (upcoming)ril layers.
When using NetworkInterface::get_default_instance() application gets handle
to CellularInterface which is actually CellularContext derived from CellularInterface.
Application needs also handle to CellularDevice to open other interfaces.
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.
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.
Kimmo Vaisanen
Ari Parkkila
Martin Kojtal
Anna Bridge
Teppo Järvelin
Chris Trowbridge
Mirela Chirica
Nir Sonnenschein
Oscar Hellström