Changed Realtek RTL8195A wifi interface to inherit EMAC interface

This allows connection status callback build into EMAC interface class
to work with Realtek RTL8195A wifi.

Author: Mika Leppänen

targets/TARGET_Realtek/TARGET_AMEBA/RTWInterface.cpp

@@ -38,8 +38,6 @@ typedef struct _wifi_scan_hdl {
 
 #define MAX_SCAN_TIMEOUT (15000)
 
-static bool _inited = false;
-
 static rtw_result_t scan_result_handler( rtw_scan_handler_result_t* malloced_scan_result )
 {
     wifi_scan_hdl *scan_handler = (wifi_scan_hdl *)malloced_scan_result->user_data;
@@ -88,37 +86,17 @@ static rtw_result_t scan_result_handler( rtw_scan_handler_result_t* malloced_sca
 }
 
 RTWInterface::RTWInterface(RTW_EMAC &get_rtw_emac, OnboardNetworkStack &get_rtw_obn_stack) :
+        EMACInterface(get_rtw_emac, get_rtw_obn_stack),
         rtw_emac(get_rtw_emac),
-        rtw_obn_stack(get_rtw_obn_stack),
-        rtw_interface(NULL),
-        _dhcp(true), 
-        _ip_address(), 
-        _netmask(), 
-        _gateway(),
-        _mac_address()
+        rtw_obn_stack(get_rtw_obn_stack)
 {
     rtw_emac.power_up();
 }
 
 RTWInterface::~RTWInterface()
 {
     rtw_emac.wlan_emac_link_change(false);
-    rtw_interface->bringdown();
-}
-
-nsapi_error_t RTWInterface::set_network(const char *ip_address, const char *netmask, const char *gateway)
-{
-    _dhcp = false;
-    strncpy(_ip_address, ip_address ? ip_address : "", sizeof(_ip_address));
-    strncpy(_netmask, netmask ? netmask : "", sizeof(_netmask));
-    strncpy(_gateway, gateway ? gateway : "", sizeof(_gateway));
-    return NSAPI_ERROR_OK;
-}
-
-nsapi_error_t RTWInterface::set_dhcp(bool dhcp)
-{
-    _dhcp = dhcp;
-    return NSAPI_ERROR_OK;
+    EMACInterface::disconnect();
 }
 
 /*
@@ -190,20 +168,10 @@ nsapi_error_t RTWInterface::connect()
     }
 
     rtw_emac.wlan_emac_link_change(true);
-    if (!rtw_interface) {
-        nsapi_error_t err = rtw_obn_stack.add_ethernet_interface(rtw_emac, true, &rtw_interface);
-        if (err != NSAPI_ERROR_OK) {
-            rtw_interface = NULL;
-            return err;
-        }
-    }
 
-    int rtw_if_bringup = rtw_interface->bringup(_dhcp,
-                           _ip_address[0] ? _ip_address : 0,
-                           _netmask[0] ? _netmask : 0,
-                           _gateway[0] ? _gateway : 0,
-                           DEFAULT_STACK);
-    return rtw_if_bringup;
+    ret = EMACInterface::connect();
+
+    return ret;
 }
 
 nsapi_error_t RTWInterface::scan(WiFiAccessPoint *res, unsigned count)
@@ -257,7 +225,9 @@ nsapi_error_t RTWInterface::disconnect()
     char essid[33];
 
     rtw_emac.wlan_emac_link_change(false);
-    rtw_interface->bringdown();
+
+    EMACInterface::disconnect();
+
     if (wifi_is_connected_to_ap() != RTW_SUCCESS) {
         return NSAPI_ERROR_NO_CONNECTION;
     }
@@ -277,38 +247,6 @@ int RTWInterface::is_connected()
     return !wifi_is_connected_to_ap();
 }
 
-const char *RTWInterface::get_mac_address()
-{
-    if (rtw_interface->get_mac_address(_mac_address, sizeof _mac_address)) {
-        return _mac_address;
-    }
-    return 0;
-}
-
-const char *RTWInterface::get_ip_address()
-{
-    if (rtw_interface->get_ip_address(_ip_address, sizeof _ip_address)) {
-        return _ip_address;
-    }
-    return 0;
-}
-
-const char *RTWInterface::get_netmask()
-{
-    if (rtw_interface->get_netmask(_netmask, sizeof _netmask)) {
-        return _netmask;
-    }
-    return 0;
-}
-
-const char *RTWInterface::get_gateway()
-{
-    if (rtw_interface->get_gateway(_gateway, sizeof _gateway)) {
-        return _gateway;
-    }
-    return 0;
-}
-
 NetworkStack *RTWInterface::get_stack()
 {
     return &rtw_obn_stack;

targets/TARGET_Realtek/TARGET_AMEBA/RTWInterface.h

@@ -24,6 +24,7 @@
 #include "netif.h"
 #include "rtw_emac.h"
 #include "OnboardNetworkStack.h"
+#include "EMACInterface.h"
 #include "LWIPStack.h"
 
 // Forward declaration
@@ -32,7 +33,7 @@ class NetworkStack;
 /** Realtek Wlan (RTW) interface class
  *  Implementation of the NetworkStack for Ameba
  */
-class RTWInterface: public WiFiInterface
+class RTWInterface: public WiFiInterface, public EMACInterface
 {
 public:
     /** RTWWlanInterface lifetime
@@ -43,28 +44,6 @@ class RTWInterface: public WiFiInterface
 
     ~RTWInterface();
 
-    /** Set a static IP address
-     *
-     *  Configures this network interface to use a static IP address.
-     *  Implicitly disables DHCP, which can be enabled in set_dhcp.
-     *  Requires that the network is disconnected.
-     *
-     *  @param address  Null-terminated representation of the local IP address
-     *  @param netmask  Null-terminated representation of the local network mask
-     *  @param gateway  Null-terminated representation of the local gateway
-     *  @return         0 on success, negative error code on failure
-     */
-    virtual nsapi_error_t set_network(const char *ip_address, const char *netmask, const char *gateway);
-
-    /** Enable or disable DHCP on the network
-     *
-     *  Requires that the network is disconnected
-     *
-     *  @param dhcp     False to disable dhcp (defaults to enabled)
-     *  @return         0 on success, negative error code on failure
-     */
-    virtual nsapi_error_t set_dhcp(bool dhcp);
-
     /** Set the WiFi network credentials
      *
      *  @param ssid      Name of the network to connect to
@@ -112,42 +91,10 @@ class RTWInterface: public WiFiInterface
      *  @return          Number of entries in @a, or if @a count was 0 number of available networks, negative on error
      *  see @a nsapi_error
      */
-     virtual nsapi_size_or_error_t scan(WiFiAccessPoint *res, unsigned count);
-
-     virtual nsapi_error_t set_channel(uint8_t channel);
-     virtual int8_t get_rssi();
-
-    /** Get the local MAC address
-     *
-     *  Provided MAC address is intended for info or debug purposes and
-     *  may not be provided if the underlying network interface does not
-     *  provide a MAC address
-     *  
-     *  @return         Null-terminated representation of the local MAC address
-     *                  or null if no MAC address is available
-     */
-    virtual const char *get_mac_address();
-
-    /** Get the local IP address
-     *
-     *  @return         Null-terminated representation of the local IP address
-     *                  or null if no IP address has been recieved
-     */
-    virtual const char *get_ip_address();
+    virtual nsapi_size_or_error_t scan(WiFiAccessPoint *res, unsigned count);
 
-    /** Get the local network mask
-     *
-     *  @return         Null-terminated representation of the local network mask 
-     *                  or null if no network mask has been recieved
-     */
-    virtual const char *get_netmask();
-
-    /** Get the local gateways
-     *
-     *  @return         Null-terminated representation of the local gateway
-     *                  or null if no network mask has been recieved
-     */
-    virtual const char *get_gateway();
+    virtual nsapi_error_t set_channel(uint8_t channel);
+    virtual int8_t get_rssi();
 
     RTW_EMAC &get_emac() const { return rtw_emac; }
 
@@ -161,15 +108,9 @@ class RTWInterface: public WiFiInterface
     virtual NetworkStack *get_stack();
     RTW_EMAC &rtw_emac;
     OnboardNetworkStack &rtw_obn_stack;
-    OnboardNetworkStack::Interface *rtw_interface;
-    bool _dhcp;
     char _ssid[256];
     char _pass[256];
     nsapi_security_t _security;
     uint8_t _channel;
-    char _ip_address[IPADDR_STRLEN_MAX];
-    char _netmask[NSAPI_IPv4_SIZE];
-    char _gateway[NSAPI_IPv4_SIZE];  
-    char _mac_address[NSAPI_MAC_SIZE];
 };
 #endif