feat(wifi): Update wifi scan to support passive & active scan

wujiangang · wujiangang · commit 379e4d7447e1 · 2018-02-13T19:29:52.000+08:00
internal: 3cb655c7
diff --git a/include/espressif/esp_sta.h b/include/espressif/esp_sta.h
@@ -26,7 +26,7 @@
 #define __ESP_STA_H__
 
 #include "queue.h"
-
+#include "esp_wifi.h"
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -142,11 +142,32 @@ bool wifi_station_connect(void);
   */
 bool wifi_station_disconnect(void);
 
+typedef enum {
+    WIFI_SCAN_TYPE_ACTIVE = 0,  /**< active scan */
+    WIFI_SCAN_TYPE_PASSIVE,     /**< passive scan */
+} wifi_scan_type_t;
+
+/** @brief Range of active scan times per channel */
+typedef struct {
+    uint32_t min;  /**< minimum active scan time per channel, units: millisecond */
+    uint32_t max;  /**< maximum active scan time per channel, units: millisecond, values above 1500ms may
+                                          cause station to disconnect from AP and are not recommended.  */
+} wifi_active_scan_time_t;
+
+/** @brief Aggregate of active & passive scan time per channel */
+typedef union {
+    wifi_active_scan_time_t active;  /**< active scan time per channel, units: millisecond. */
+    uint32_t passive;                /**< passive scan time per channel, units: millisecond, values above 1500ms may
+                                          cause station to disconnect from AP and are not recommended. */
+} wifi_scan_time_t;
+
 struct scan_config {
-    uint8 *ssid;            /**< SSID of AP */
-    uint8 *bssid;           /**< MAC address of AP */
-    uint8 channel;          /**< channel, scan the specific channel */
-    uint8 show_hidden;      /**< enable to scan AP whose SSID is hidden */
+    uint8 *ssid;                 /**< SSID of AP */
+    uint8 *bssid;                /**< MAC address of AP */
+    uint8 channel;               /**< channel, scan the specific channel */
+    uint8 show_hidden;           /**< enable to scan AP whose SSID is hidden */
+    wifi_scan_type_t scan_type;  /**< scan type, active or passive */
+    wifi_scan_time_t scan_time;  /**< scan time per channel */
 };
 
 typedef enum {
