access_point example: Print parts of station_info output to telnet client

See #51 for relevant discussions

core/include/sdk_internal.h

@@ -81,8 +81,8 @@ struct sdk_g_ic_volatile_st {
 
     void *_unknown180;
     void *_unknown184;
-    struct station_info *station_info_head;
+    struct sdk_station_info *station_info_head;
-    struct station_info *station_info_tail;
+    struct sdk_station_info *station_info_tail;
     uint32_t _unknown190;
     uint32_t _unknown194;
 

examples/access_point/access_point.c

@@ -10,6 +10,7 @@
 
 #include <espressif/esp_common.h>
 #include <espressif/sdk_private.h>
+#include <sdk_internal.h>
 #include <FreeRTOS.h>
 #include <task.h>
 #include <queue.h>
@@ -88,10 +89,36 @@ static void telnetTask(void *pvParameters)
     netconn_write(client, buf, strlen(buf), NETCONN_COPY);
     snprintf(buf, sizeof(buf), "Free heap %d bytes\r\n", (int)xPortGetFreeHeapSize());
     netconn_write(client, buf, strlen(buf), NETCONN_COPY);
-    snprintf(buf, sizeof(buf), "Your address is %d.%d.%d.%d\r\n\r\n",
+    snprintf(buf, sizeof(buf), "Your address is %d.%d.%d.%d\n\n",
              ip4_addr1(&client_addr), ip4_addr2(&client_addr),
              ip4_addr3(&client_addr), ip4_addr4(&client_addr));
     netconn_write(client, buf, strlen(buf), NETCONN_COPY);
+
+    snprintf(buf, sizeof(buf), "Structures head %p tail %p \n",
+           sdk_g_ic.v.station_info_head, sdk_g_ic.v.station_info_tail);
+    netconn_write(client, buf, strlen(buf), NETCONN_COPY);
+
+    if(sdk_g_ic.v.station_info_tail) {
+        snprintf(buf, sizeof(buf), "Tail BSSID %02x:%02x:%02x IP %d NEXT %p\n",
+               sdk_g_ic.v.station_info_tail->bssid[0],
+               sdk_g_ic.v.station_info_tail->bssid[1],
+               sdk_g_ic.v.station_info_tail->bssid[2],
+               ip4_addr1(&sdk_g_ic.v.station_info_tail->ip),
+               STAILQ_NEXT(sdk_g_ic.v.station_info_tail, next));
+        netconn_write(client, buf, strlen(buf), NETCONN_COPY);
+    }
+
+    struct sdk_station_info *station = sdk_wifi_softap_get_station_info();
+    while(station) {
+        snprintf(buf, sizeof(buf), "Client %02x:%02x:%02x:%02x:%02x:%02x IP %d.%d.%d.%d\n",
+               station->bssid[0], station->bssid[1], station->bssid[2],
+               station->bssid[3], station->bssid[4], station->bssid[5],
+               ip4_addr1(&station->ip), ip4_addr2(&station->ip),
+               ip4_addr3(&station->ip), ip4_addr4(&station->ip));
+        netconn_write(client, buf, strlen(buf), NETCONN_COPY);
+        station = STAILQ_NEXT(station, next);
+    }
+
     netconn_delete(client);
   }
 }

include/espressif/esp_softap.h

@@ -6,6 +6,10 @@
 #ifndef __ESP_SOFTAP_H__
 #define __ESP_SOFTAP_H__
 
+#include <stdint.h>
+#include "lwip/ip_addr.h"
+#include "espressif/queue.h"
+
 #ifdef	__cplusplus
 extern "C" {
 #endif
@@ -24,6 +28,15 @@ struct sdk_softap_config {
 bool sdk_wifi_softap_get_config(struct sdk_softap_config *config);
 bool sdk_wifi_softap_set_config(struct sdk_softap_config *config);
 
+struct sdk_station_info {
+    STAILQ_ENTRY(sdk_station_info) next;
+    uint8_t bssid[6];
+    struct ip_addr ip;
+};
+
+struct sdk_station_info* sdk_wifi_softap_get_station_info();
+bool sdk_wifi_softap_free_station_info();
+
 #ifdef	__cplusplus
 }
 #endif