Add generic IP utilities

Add:
broadcastIP() => Retrieve the network id (e.g. 192.168.0.0)
networkID() => Retrieve the broadcast IP (e.g. 192.168.0.255)
subnetCIDR() => Retrieve the subnet CIDR (e.g. 24)

Author: a7md0

libraries/WiFi/src/WiFiSTA.cpp

@@ -492,6 +492,48 @@ IPAddress WiFiSTAClass::dnsIP(uint8_t dns_no)
     return IPAddress(dns_ip.u_addr.ip4.addr);
 }
 
+/**
+ * Get the broadcast ip address.
+ * @return IPAddress broadcastIP
+ */
+IPAddress WiFiSTAClass::broadcastIP()
+{
+    if(WiFiGenericClass::getMode() == WIFI_MODE_NULL){
+        return IPAddress();
+    }
+    tcpip_adapter_ip_info_t ip;
+    tcpip_adapter_get_ip_info(TCPIP_ADAPTER_IF_STA, &ip);
+    return WiFiGenericClass::calculateBroadcast(IPAddress(ip.gw.addr), IPAddress(ip.netmask.addr));
+}
+
+/**
+ * Get the network id.
+ * @return IPAddress netwrokID
+ */
+IPAddress WiFiSTAClass::netwrokID()
+{
+    if(WiFiGenericClass::getMode() == WIFI_MODE_NULL){
+        return IPAddress();
+    }
+    tcpip_adapter_ip_info_t ip;
+    tcpip_adapter_get_ip_info(TCPIP_ADAPTER_IF_STA, &ip);
+    return WiFiGenericClass::calculateNetworkID(IPAddress(ip.gw.addr), IPAddress(ip.netmask.addr));
+}
+
+/**
+ * Get the network id.
+ * @return uint8_t netwrokID
+ */
+uint8_t WiFiSTAClass::subnetCIDR()
+{
+    if(WiFiGenericClass::getMode() == WIFI_MODE_NULL){
+        return (uint8_t)0;
+    }
+    tcpip_adapter_ip_info_t ip;
+    tcpip_adapter_get_ip_info(TCPIP_ADAPTER_IF_STA, &ip);
+    return WiFiGenericClass::calculateSubnetCIDR(IPAddress(ip.netmask.addr));
+}
+
 /**
  * Return the current SSID associated with the network
  * @return SSID

libraries/WiFi/src/WiFiSTA.h

@@ -64,6 +64,10 @@ class WiFiSTAClass
     IPAddress subnetMask();
     IPAddress gatewayIP();
     IPAddress dnsIP(uint8_t dns_no = 0);
+
+    IPAddress broadcastIP();
+    IPAddress netwrokID();
+    uint8_t subnetCIDR();
 
     bool enableIpV6();
     IPv6Address localIPv6();