Add David Hewson's corrections to the LPC214x USB device driver; Add LPC214x configuration to test the USB composite device

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4359 42af7a65-404d-4744-a932-0658087f49c3

examples/README.txt

@@ -139,8 +139,8 @@ examples/composite
 
   CONFIG_NSH_BUILTIN_APPS
     This example can be built as two NSH "built-in" commands if this option
-    is selected: 'msconn' will connect the USB mass storage device; 'msdis'
-    will disconnect the USB storage device.
+    is selected: 'conn' will connect the USB composite device; 'msdis'
+    will disconnect the USB composite device.
 
   Configuration options unique to this example:
 
@@ -970,7 +970,7 @@ examples/thttpd
     CONFIG_EXAMPLE_THTTPD_NETMASK  - Network mask
 
   Applications using this example will need to provide an appconfig
-  file in the configuration driver with instruction to build applications
+  file in the configuration directory with instruction to build applications
   like:
 
     CONFIGURED_APPS += uiplib

examples/composite/composite_main.c

@@ -373,6 +373,9 @@ static int dumptrace(void)
 static int open_serial(void)
 {
   int errcode;
+#ifdef CONFIG_USBDEV_TRACE
+  int ret;
+#endif
 
   /* Open the USB serial device for writing (blocking) */
 
@@ -402,13 +405,15 @@ static int open_serial(void)
             }
         }
 
-      /* If USB tracing is enabled, then dump all collected trace data to stdout */
+      /* If USB tracing is enabled, then dump all collected trace data to
+       * stdout.
+       */
 
 #ifdef CONFIG_USBDEV_TRACE
       ret = dumptrace();
       if (ret < 0)
         {
-          goto errout;
+          return ret;
         }
 #endif
     }

netutils/README.txt

@@ -1,34 +1,88 @@
 netutils
 ^^^^^^^^
 
+Contents
+--------
+
+  - uIP Applications
+  - Other Network Applications
+  - Tips for Using Telnetd
+  - Tips for Using DHCPC
+
+uIP Applications
+^^^^^^^^^^^^^^^^
+
 This directory contains most of the network applications contained
 under the uIP-1.0 apps directory.  As the uIP apps/README says,
 these applications "are not all heavily tested."  These uIP apps
 include:
 
-  dhcpc     - Dynamic Host Configuration Protocol (DHCP) client
-  resolv    - uIP DNS resolver
-  smtp      - Simple Mail Transfer Protocol (SMTP) client
-  webclient - HTTP web client
-  webserver - HTTP web server
+  dhcpc     - Dynamic Host Configuration Protocol (DHCP) client.  See
+              apps/include/netutils/dhcpc.h for interface information.
+  resolv    - uIP DNS resolver.  See apps/include/netutils/resolv.h
+              for interface information.
+  smtp      - Simple Mail Transfer Protocol (SMTP) client.  See
+              apps/include/netutils/smtp.h for interface information.
+  webclient - HTTP web client.  See apps/include/netutils/webclient.h
+              for interface information.
+  webserver - HTTP web server.  See apps/include/netutils/httpd.h
+              for interface information.
 
 You may find additional information on these apps in the uIP forum
 accessible through: http://www.sics.se/~adam/uip/index.php/Main_Page 
 
+Other Network Applications
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
 Additional applications that were not part of uIP (but which are
 highly influenced by uIP) include:
 
-  dhcpd     - Dynamic Host Configuration Protocol (DHCP) server
-  tftpc     - TFTP client
+  dhcpd     - Dynamic Host Configuration Protocol (DHCP) server.  See
+              apps/include/netutils/dhcpd.h for interface information.
+  tftpc     - TFTP client.  See apps/include/netutils/tftp.h
+              for interface information.
   telnetd   - TELNET server.  This is the Telnet logic adapted from
               uIP and generalized for use as the front end to any
               shell.  The telnet daemon creates sessions that are
               "wrapped" as character devices and mapped to stdin,
               stdout, and stderr.  Now the telnet session can be
               inherited by spawned tasks.
-  ftpc      - FTP client
+  ftpc      - FTP client.  See apps/include/ftpc.h for interface
+              information.
   thttpd    - This is a port of Jef Poskanzer's THTTPD HTPPD server.
-              See http://acme.com/software/thttpd/.
+              See http://acme.com/software/thttpd/ for general THTTPD
+              information.  See apps/include/netutils/thttpd.h
+              for interface information. Applications using this thttpd
+              will need to provide an appconfig file in the configuration
+              directory with instruction to build applications like:
+
+               CONFIGURED_APPS += uiplib
+               CONFIGURED_APPS += thttpd
+
+Tips for Using Telnetd
+^^^^^^^^^^^^^^^^^^^^^^
+
+Telnetd is set up to be the front end for a shell.  The primary use of
+Telnetd in NuttX is to support the NuttShell (NSH) Telnet front end.  See
+apps/include/netutils/telnetd.h for information about how to incorporate
+Telnetd into your custom applications.
+
+To enable and link the Telnetd daemon, you need to include the following in 
+in your appconfig (apps/.config) file:
+
+  CONFIGURED_APPS += uiplib
+  CONFIGURED_APPS += netutils/telnetd
+
+Also if the Telnet console is enabled, make sure that you have the following
+set in the NuttX configuration file or else the performance will be very bad
+(because there will be only one character per TCP transfer):
+  
+  CONFIG_STDIO_BUFFER_SIZE   Some value >= 64
+  CONFIG_STDIO_LINEBUFFER=y  Since Telnetd is line oriented, line buffering
+                             is optimal.
+
+Tips for Using DHCPC
+^^^^^^^^^^^^^^^^^^^^
 
 If you use DHCPC/D, then some special configuration network options are
 required.  These include:
@@ -43,3 +97,4 @@ required.  These include:
   CONFIG_NET_BUFSIZE=650     The client must be prepared to receive
   (or larger)                DHCP messages of up to 576 bytes (excluding
                              Ethernet, IP, or UDP headers and FCS).
+