Change the callback `get_ongoing_call()` of the AG from synchronous to
asynchronous mode. It will help to avoid the Bluetooth host stack be
blocked in the context of callback `get_ongoing_call()`.
Add a function `bt_hfp_ag_ongoing_calls()` to set the ongoing calls and
reply the AT command `AT+CIND?` after the callback `get_ongoing_call()`
has been notified.
Add a delayable worker to avoid the AT command `AT+CIND?` never being
replied. After the time exceeds
@kconfig{CONFIG_BT_HFP_AG_GET_ONGOING_CALL_TIMEOUT}, the response of
the AT command `AT+CIND?` will be replied.
Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>
If the SLC is broken, all saved calls should be cleared.
Clear all calls in the callback `hf_disconnected()` and
`ag_disconnected()`.
Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>
If the AG works as Data Channel Acceptor, the ACL conn cannot be known
by the application of AG. Similar with HF, add ACL conn as the first
parameter to the `connected` callback of AG.
Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>