fix rndis response to get mac address

- remove cflags -fshort-enums
- clean up webserver descriptor

examples/device/net_lwip_webserver/src/usb_descriptors.c

@@ -155,15 +155,16 @@ static uint16_t _desc_str[32];
 // Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
 uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
-  (void)langid;
+  (void) langid;
 
-  unsigned chr_count = 0;
+  uint8_t chr_count = 0;
 
   if (STR_LANGID == index)
   {
     memcpy(&_desc_str[1], string_desc_arr[0], 2);
     chr_count = 1;
   }
+#if CFG_TUD_NET == OPT_NET_ECM
   else if (STR_MAC == index)
   {
     // Convert MAC address into UTF-16
@@ -174,6 +175,7 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
       _desc_str[1+chr_count++] = "0123456789ABCDEF"[(tud_network_mac_address[i] >> 0) & 0xf];
     }
   }
+#endif
   else
   {
     // Convert ASCII string into UTF-16
@@ -186,7 +188,7 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
     chr_count = strlen(str);
     if ( chr_count > (TU_ARRAY_SIZE(_desc_str) - 1)) chr_count = TU_ARRAY_SIZE(_desc_str) - 1;
 
-    for (unsigned i=0; i<chr_count; i++)
+    for (uint8_t i=0; i<chr_count; i++)
     {
       _desc_str[1+i] = str[i];
     }

examples/rules.mk

@@ -30,7 +30,7 @@ INC += $(TOP)/src
 
 #
 CFLAGS += $(addprefix -I,$(INC))
-LDFLAGS += $(CFLAGS) -fshort-enums -Wl,-T,$(TOP)/$(LD_FILE) -Wl,-Map=$@.map -Wl,-cref -Wl,-gc-sections -specs=nosys.specs -specs=nano.specs
+LDFLAGS += $(CFLAGS) -Wl,-T,$(TOP)/$(LD_FILE) -Wl,-Map=$@.map -Wl,-cref -Wl,-gc-sections -specs=nosys.specs -specs=nano.specs
 ASFLAGS += $(CFLAGS)
 
 # Assembly files can be name with upper case .S, convert it to .s 

lib/networking/rndis_reports.c

@@ -120,8 +120,8 @@ static void rndis_query(void)
   {
     case OID_GEN_SUPPORTED_LIST:         rndis_query_cmplt(RNDIS_STATUS_SUCCESS, OIDSupportedList, 4 * OID_LIST_LENGTH); return;
     case OID_GEN_VENDOR_DRIVER_VERSION:  rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 0x00001000);  return;
-    case OID_802_3_CURRENT_ADDRESS:      rndis_query_cmplt(RNDIS_STATUS_SUCCESS, &station_hwaddr, 6); return;
-    case OID_802_3_PERMANENT_ADDRESS:    rndis_query_cmplt(RNDIS_STATUS_SUCCESS, &permanent_hwaddr, 6); return;
+    case OID_802_3_CURRENT_ADDRESS:      rndis_query_cmplt(RNDIS_STATUS_SUCCESS, station_hwaddr, 6); return;
+    case OID_802_3_PERMANENT_ADDRESS:    rndis_query_cmplt(RNDIS_STATUS_SUCCESS, permanent_hwaddr, 6); return;
     case OID_GEN_MEDIA_SUPPORTED:        rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, NDIS_MEDIUM_802_3); return;
     case OID_GEN_MEDIA_IN_USE:           rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, NDIS_MEDIUM_802_3); return;
     case OID_GEN_PHYSICAL_MEDIUM:        rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, NDIS_MEDIUM_802_3); return;