As per 3GPP TS 24.301:
If the UE supports NB-S1 mode, Non-IP PDN type, or N1 mode,
then the UE shall support the extended protocol configuration options IE.
...
If the UE supports the extended protocol configuration options IE,
then the UE shall set the ePCO bit to extended protocol configuration options supported
in the UE network capability IE of the ATTACH REQUEST message.
Some external modems have an internal TLSSocket implementation which can be used
instead of mbedtls based TLSSocket. Using offloaded TLSSocket can result in
significantly reduced ROM usage.
Offloaded TLSSocket can be enabled by enabling "nsapi.offload-tlssocket" and the used
network stack (e.g. cellular modem's CellularStack class) must support the setsockopt's
defined in nsapi_types.h.
Compared to original mbedtls based TLSSocket, offloaded TLSSocket brings in one significant
API limitation. Offloaded TLSSocket requires setting of certificates and keys after open()
and before connect() calls, where mbedtls based TLSSocket allows setting these before open()
call.
QISEND command can respond either SEND OK, SEND FAIL or ERROR.
If response is not SEND OK, sent bytes should not be checked but
error should be reported.
Possible responses for send command are SEND OK<cr><ln>, SEND FAIL<cr><ln> or ERROR<cr><ln>
so normal OK<cr><ln> response check does not work properly.
New ATHandler functions taken into use for rest of the targets (BG96 was updated initially) to reduce code size. This means basically that new functions using variadic list approach are taken into use and with those one can usually write AT commands in single line instead of multiple lines.
Only internal changes and API's are not modified.
IPV6 and IPV6V4 support is also network dependent not only modem.
Having these properties enabled for a modem requires a fallback
mechanism during PDP context activation. This mechanism is missing
at the moment and that can result in imposibility to establish
succesfull connection when network only supports IPV4 contexts.
Deprecate wait() in favour of acquire(), try_acquire(),
try_acquire_for() and try_acquire_until().
Brings Semaphore more into line with CMSIS-RTOS 2 (which uses "acquire"),
itself (as it has "release"), and other classes having "try", "try for"
and "try until".
Also steps away from vague "wait" term - the primary operation here is
to acquire the semaphore, and this will of course sleep.
This modem is a special case. It uses a given socket ID value rather
than providing one. A naive solution here would be to directly map the
index of a CellularSocket object in the CellularSocket container. But
considering the case where there are multiple sockets being opened (some
sockets being already created at the modem and some yet not created), direct mapping
to indices will not work. As it can happen that the CellularSocket
object is allocated but the socket id is not assigned yet as it is not
actually created on the modem.
In such a case, we check the container and assign the socket id from the
pool if an empty slot was found.
Adrien CABARBAYE
Ari Parkkila
Mirela Chirica
Martin Kojtal
Ilia Penev
Kimmo Vaisanen
Hugues Kamba
Antti Kauppila
Anna Bridge
Kevin Bracey
Hasnain Virk
Daniel Lee