STM32F746-DISCO: Enable the NSH telnet sessions

configs/stm32f746g-disco/README.txt

@@ -45,6 +45,9 @@ STATUS
     console on USART6 and RS-232 shield.  Very few other drivers are in
     place yet.
 
+  2015-07-20:  STM32 F7 Ethernet appears to be functional, but has had
+    only light testing.
+
 Development Environment
 =======================
 
@@ -496,10 +499,50 @@ Configuration Directories
 
     NOTES:
 
-    1. Both IPv4 and IPv6 protocoals are enabled.
+    1. Both IPv4 and IPv6 protocoals are enabled.  Fixed IP addresses are
+       used.  The default configurationi target has these IP address:
+
+       IPv4: 10.0.0.2
+       IPv6: fc00::2
+
+       These are, of course, easily changes by reconfiguring via 'make
+       menuconfig'
 
     2. UDP, TCIP/IP, ARP, ICMP, and ICMPv6 are also enabled.
 
+    3. NSH offers several network oriented commands such as:  ipconfig,
+       ifup, ifdown, ping, and ping6.
+
+    4. Telnet sessions are supported.  You can start a Telnet session from
+       any host on the network using a command like:
+
+         $ telnet 10.0.0.2
+         Trying 10.0.0.2...
+         Connected to 10.0.0.2.
+         Escape character is '^]'.
+
+         NuttShell (NSH) NuttX-7.10
+         nsh> help
+         help usage:  help [-v] [<cmd>]
+
+           [           dd          hexdump     mb          ping6       sleep
+           ?           echo        ifconfig    mkdir       ps          test
+           break       exec        ifdown      mkfifo      pwd         true
+           cat         exit        ifup        mh          rm          uname
+           cd          false       kill        mv          rmdir       unset
+           cp          free        losetup     mw          set         usleep
+           cmp         help        ls          ping        sh          xd
+
+         Builtin Apps:
+         nsh>
+
+       Under either Linux or Cygwin
+
+    5. The PHY address is either 0 or 1, depending on the state of the
+       LAN8720 RXER/PHYAD0 when the hardware is reset.  That connects to the
+       STM32 F7 via PG2. PG2 is not controlled but appears to result in a
+       PHY address of 0.
+
   nsh:
   ---
     Configures the NuttShell (NSH) located at apps/examples/nsh.  The

configs/stm32f746g-disco/netnsh/defconfig

@@ -920,7 +920,7 @@ CONFIG_EXAMPLES_NSH_CXXINITIALIZE=y
 # CONFIG_NETUTILS_FTPC is not set
 # CONFIG_NETUTILS_JSON is not set
 # CONFIG_NETUTILS_SMTP is not set
-# CONFIG_NETUTILS_TELNETD is not set
+CONFIG_NETUTILS_TELNETD=y
 # CONFIG_NETUTILS_TFTPC is not set
 CONFIG_NETUTILS_NETLIB=y
 # CONFIG_NETUTILS_WEBCLIENT is not set
@@ -1021,7 +1021,6 @@ CONFIG_NSH_FILEIOSIZE=512
 # Console Configuration
 #
 CONFIG_NSH_CONSOLE=y
-# CONFIG_NSH_ALTCONDEV is not set
 # CONFIG_NSH_ARCHINIT is not set
 
 #
@@ -1080,6 +1079,18 @@ CONFIG_NSH_SWMAC=y
 CONFIG_NSH_MACADDR=0x00e0deadbeef
 CONFIG_NSH_MAX_ROUNDTRIP=20
 
+#
+# Telnet Configuration
+#
+CONFIG_NSH_TELNET=y
+CONFIG_NSH_TELNETD_PORT=23
+CONFIG_NSH_TELNETD_DAEMONPRIO=100
+CONFIG_NSH_TELNETD_DAEMONSTACKSIZE=2048
+CONFIG_NSH_TELNETD_CLIENTPRIO=100
+CONFIG_NSH_TELNETD_CLIENTSTACKSIZE=2048
+CONFIG_NSH_IOBUFFER_SIZE=512
+# CONFIG_NSH_TELNET_LOGIN is not set
+
 #
 # NxWidgets/NxWM
 #