For SoftAP provisioning, if we start Wi-Fi connection as soon as the
apply config request is received, it has been observed that the clients
(Phone apps mostly) do not get the response for this as we switch the
Wi-Fi channel, causing a momentary disconnection.
Delaying the connection calls helps mitigate the issue.
Signed-off-by: Piyush Shah <piyush@espressif.com>
List of changes:
* Deprecated public API wifi_prov_mgr_event_handler() and added private function wifi_prov_mgr_event_handler_internal(), registered with the default event loop for catching WIFI and IP system events
List of changes in components/wifi_provisioning:
* Manager version is now v1.1
* .proto files and protocomm handler added for sending Wi-Fi scan command and receiving scan results
* Implemented handlers for wifi_scan protocomm endpoint
* Update manager context data structure to hold scan state and results
* scheme_softap now runs Wi-Fi in APSTA mode
* Wi-Fi is started in AP mode when provisioning is started. This is necessary for scan list to work
* Docs updates with information about new wifi_scan endpoint
List of changes in tools/esp_prov:
* Added functions for sending and receiving protobuf messages compatible with wifi_scan protocomm endpoint
* Added feature to display/refresh scan results and accept user selection at runtime
* New functions:
* get_version() : only returns the protocol version string
* has_capability() : check is a capability is present according to proto-ver response
* wifi_scan feature is provided only if the `wifi_scan` capability is present
Other changes:
* Replace recursive mutex with plain mutex
* assert on return value of mutex give / take calls
* replace all calls with macros ACQUIRE_LOCK and RELEASE_LOCK
* some checks added in scanning related private APIs
* free and nullify scanning context and state if service is stopped while ongoing scan
