examples: add component for protocol examples network functionality

* Original commit: espressif/esp-idf@22bef90bd3

examples/common_components/protocol_examples_common/Kconfig.projbuild

@@ -0,0 +1,153 @@
+menu "Example Connection Configuration"
+
+    choice EXAMPLE_CONNECT_INTERFACE
+        prompt "Connect using"
+        default EXAMPLE_CONNECT_WIFI
+        help
+            Protocol examples can use Wi-Fi or Ethernet to connect to the network.
+            Choose which interface to use.
+
+        config EXAMPLE_CONNECT_WIFI
+            bool "Wi-Fi"
+
+        config EXAMPLE_CONNECT_ETHERNET
+            bool "Ethernet"
+
+    endchoice
+
+    config EXAMPLE_WIFI_SSID
+        depends on EXAMPLE_CONNECT_WIFI
+        string "WiFi SSID"
+        default "myssid"
+        help
+            SSID (network name) for the example to connect to.
+
+    config EXAMPLE_WIFI_PASSWORD
+        depends on EXAMPLE_CONNECT_WIFI
+        string "WiFi Password"
+        default "mypassword"
+        help
+            WiFi password (WPA or WPA2) for the example to use.
+            Can be left blank if the network has no security set.
+
+
+    choice PHY_MODEL
+        prompt "Ethernet PHY"
+        depends on EXAMPLE_CONNECT_ETHERNET
+        default CONFIG_PHY_TLK110
+        help
+            Select the PHY driver to use for the example.
+
+        config PHY_IP101
+            bool "IP101"
+            help
+                IP101 is a single port 10/100 MII/RMII/TP/Fiber Fast Ethernet Transceiver.
+                Goto http://www.icplus.com.tw/pp-IP101G.html for more information about it.
+
+        config PHY_TLK110
+            bool "TI TLK110 PHY"
+            help
+                Select this to use the TI TLK110 PHY
+
+        config PHY_LAN8720
+            bool "Microchip LAN8720 PHY"
+            help
+                Select this to use the Microchip LAN8720 PHY
+
+    endchoice
+
+
+    config PHY_ADDRESS
+        int "PHY Address (0-31)"
+        depends on EXAMPLE_CONNECT_ETHERNET
+        default 31
+        range 0 31
+        help
+            Select the PHY Address (0-31) for the hardware configuration and PHY model.
+            TLK110 default 31
+            LAN8720 default 1 or 0
+
+
+    choice PHY_CLOCK_MODE
+        prompt "EMAC clock mode"
+        depends on EXAMPLE_CONNECT_ETHERNET
+        default PHY_CLOCK_GPIO0_IN
+        help
+            Select external (input on GPIO0) or internal (output on GPIO16 or GPIO17) clock
+
+
+        config PHY_CLOCK_GPIO0_IN
+            bool "GPIO0 input"
+            depends on EXAMPLE_CONNECT_ETHERNET
+            help
+                Input of 50MHz PHY clock on GPIO0.
+
+        config PHY_CLOCK_GPIO0_OUT
+            bool "GPIO0 Output"
+            help
+                Output the internal 50MHz RMII clock on GPIO0.
+
+        config PHY_CLOCK_GPIO16_OUT
+            bool "GPIO16 output"
+            depends on EXAMPLE_CONNECT_ETHERNET
+            help
+                Output the internal 50MHz APLL clock on GPIO16.
+
+        config PHY_CLOCK_GPIO17_OUT
+            bool "GPIO17 output (inverted)"
+            depends on EXAMPLE_CONNECT_ETHERNET
+            help
+                Output the internal 50MHz APLL clock on GPIO17 (inverted signal).
+
+    endchoice
+
+    config PHY_CLOCK_MODE
+        int
+        depends on EXAMPLE_CONNECT_ETHERNET
+        default 0 if PHY_CLOCK_GPIO0_IN
+        default 1 if PHY_CLOCK_GPIO0_OUT
+        default 2 if PHY_CLOCK_GPIO16_OUT
+        default 3 if PHY_CLOCK_GPIO17_OUT
+
+
+    config PHY_USE_POWER_PIN
+        bool "Use PHY Power (enable/disable) pin"
+        depends on EXAMPLE_CONNECT_ETHERNET
+        default y
+        help
+            Use a GPIO "power pin" to power the PHY on/off during operation.
+            Consult the example README for more details
+
+    config PHY_POWER_PIN
+        int "PHY Power GPIO"
+        depends on EXAMPLE_CONNECT_ETHERNET
+        default 17
+        range 0 33
+        depends on PHY_USE_POWER_PIN
+        help
+            GPIO number to use for powering on/off the PHY.
+
+    config PHY_SMI_MDC_PIN
+        int "SMI MDC Pin"
+        depends on EXAMPLE_CONNECT_ETHERNET
+        default 23
+        range 0 33
+        help
+            GPIO number to use for SMI clock output MDC to PHY.
+
+    config PHY_SMI_MDIO_PIN
+        int "SMI MDIO Pin"
+        depends on EXAMPLE_CONNECT_ETHERNET
+        default 18
+        range 0 33
+        help
+            GPIO number to use for SMI data pin MDIO to/from PHY.
+
+    config EXAMPLE_CONNECT_IPV6
+        bool "Obtain IPv6 link-local address"
+        default y
+        help
+            By default, examples will wait until IPv4 and IPv6 addresses are obtained.
+            Disable this option if the network does not support IPv6.
+
+endmenu