esp_netif_init() returns standard esp_err_t error code (unlike tcpip_adapter init), so shall be checked for the return value
Also to make the initialization code more consistent.
The build system automatically determines offsets of partitions from
the partition table, so no manual changes are needed. Instead, add a
note that partition offsets may need to be updated when increasing
the bootloader size.
Other changes:
* Command line argument name and descriptions updated and formatted
* Some exception messages updated for clarity
* READMEs updated for tool and all provisioning examples
* Minor update in example test scripts due to change in esp_prov.get_transport() API
* Transport_HTTP now forces connect on initialization
- Adds NimBLE stack support to existing BLE variant of unified provisioning.
- Uses scan response to send device name, 128 bit custom UUIDs based on service
UUID.
- Minimal changes to `app_prov.c`, component.mk, CMakeLists.txt and
`protocomm_ble.h` to accomodate NimBLE stack for provisioning.
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
Removed all other instances of call to esp_wifi_init(), because every time this is called it
will override its previously set default event handler and hence cause numerous warnings.
Also, call nvs_flash_init() only once, that is before calling esp_wifi_init() in main function
Note : Examples have been updated to prevent invocation of bluedroid/wifi APIs from inside timer callback when stopping provisioning. Workaround is to spawn new task from inside the timer callback.
