Update IDF to a0468b2 (#2108)

* Update IDF to a0468b2

* add missing ld file

* Fix PIO builds and change coex policy

tools/sdk/include/wifi_provisioning/wifi_provisioning/wifi_config.h

@@ -0,0 +1,120 @@
+// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _WIFI_PROV_CONFIG_H_
+#define _WIFI_PROV_CONFIG_H_
+
+#include <lwip/inet.h>
+
+/**
+ * @brief   WiFi STA status for conveying back to the provisioning master
+ */
+typedef enum {
+    WIFI_PROV_STA_CONNECTING,
+    WIFI_PROV_STA_CONNECTED,
+    WIFI_PROV_STA_DISCONNECTED
+} wifi_prov_sta_state_t;
+
+/**
+ * @brief   WiFi STA connection fail reason
+ */
+typedef enum {
+    WIFI_PROV_STA_AUTH_ERROR,
+    WIFI_PROV_STA_AP_NOT_FOUND
+} wifi_prov_sta_fail_reason_t;
+
+/**
+ * @brief   WiFi STA connected status information
+ */
+typedef struct {
+    /**
+     * IP Address received by station
+     */
+    char    ip_addr[IP4ADDR_STRLEN_MAX];
+
+    char    bssid[6];   /*!< BSSID of the AP to which connection was estalished */
+    char    ssid[33];   /*!< SSID of the to which connection was estalished */
+    uint8_t channel;    /*!< Channel of the AP */
+    uint8_t auth_mode;  /*!< Authorization mode of the AP */
+} wifi_prov_sta_conn_info_t;
+
+/**
+ * @brief   WiFi status data to be sent in response to `get_status` request from master
+ */
+typedef struct {
+    wifi_prov_sta_state_t wifi_state;    /*!< WiFi state of the station */
+    union {
+        /**
+         * Reason for disconnection (valid only when `wifi_state` is `WIFI_STATION_DISCONNECTED`)
+         */
+        wifi_prov_sta_fail_reason_t fail_reason;
+
+        /**
+         * Connection information (valid only when `wifi_state` is `WIFI_STATION_CONNECTED`)
+         */
+        wifi_prov_sta_conn_info_t   conn_info;
+    };
+} wifi_prov_config_get_data_t;
+
+/**
+ * @brief   WiFi config data received by slave during `set_config` request from master
+ */
+typedef struct {
+    char    ssid[33];       /*!< SSID of the AP to which the slave is to be connected */
+    char    password[65];   /*!< Password of the AP */
+    char    bssid[6];       /*!< BSSID of the AP */
+    uint8_t channel;        /*!< Channel of the AP */
+} wifi_prov_config_set_data_t;
+
+/**
+ * @brief   Internal handlers for receiving and responding to protocomm
+ *          requests from master
+ *
+ * This is to be passed as priv_data for protocomm request handler
+ * (refer to `wifi_prov_config_data_handler()`) when calling `protocomm_add_endpoint()`.
+ */
+typedef struct wifi_prov_config_handlers {
+    /**
+     * Handler function called when connection status
+     * of the slave (in WiFi station mode) is requested
+     */
+    esp_err_t (*get_status_handler)(wifi_prov_config_get_data_t *resp_data);
+
+    /**
+     * Handler function called when WiFi connection configuration
+     * (eg. AP SSID, password, etc.) of the slave (in WiFi station mode)
+     * is to be set to user provided values
+     */
+    esp_err_t (*set_config_handler)(const wifi_prov_config_set_data_t *req_data);
+
+    /**
+     * Handler function for applying the configuration that was set in
+     * `set_config_handler`. After applying the station may get connected to
+     * the AP or may fail to connect. The slave must be ready to convey the
+     * updated connection status information when `get_status_handler` is
+     * invoked again by the master.
+     */
+    esp_err_t (*apply_config_handler)(void);
+} wifi_prov_config_handlers_t;
+
+/**
+ * @brief   Handler for receiving and responding to requests from master
+ *
+ * This is to be registered as the `wifi_config` endpoint handler
+ * (protocomm `protocomm_req_handler_t`) using `protocomm_add_endpoint()`
+ */
+esp_err_t wifi_prov_config_data_handler(uint32_t session_id, const uint8_t *inbuf, ssize_t inlen,
+                                        uint8_t **outbuf, ssize_t *outlen, void *priv_data);
+
+#endif