net:add get rssi api for esp8266_tc

net/tencent_firmware_module_wrapper/tencent_firmware_module_wrapper.c

@@ -215,3 +215,11 @@ int tos_tf_module_smartconfig_stop(void)
     }
     return -1;
 }
+
+int tos_tf_module_get_rssi(int *rssi)
+{
+    if (g_tencent_firmware_module && g_tencent_firmware_module->get_rssi) {
+        return g_tencent_firmware_module->get_rssi(rssi);
+    }
+    return -1;
+}

net/tencent_firmware_module_wrapper/tencent_firmware_module_wrapper.h

@@ -139,6 +139,8 @@ typedef struct tencent_firmware_module_st {
     int (*ota_read_fwinfo)(ota_fw_info_t *ota_fw_info);
     
     int (*ota_read_fwdata)(uint8_t *ota_fw_data_buffer,uint16_t buf_size);
+
+    int (*get_rssi)(int *rssi);
     
     int (*start_smartconfig)(void);
     
@@ -323,5 +325,14 @@ int tos_tf_module_smartconfig_start(void);
  */
 int tos_tf_module_smartconfig_stop(void);
 
+/**
+ * @brief Get the wifi rssi
+ *
+ * @param[in]   rssi   the pointer to rssi value
+ *
+ * @return  errcode
+ */
+int tos_tf_module_get_rssi(int *rssi);
+
 #endif