Update documentation to describe customization of NSH; Add the framework for a LPC43xx USB0 driver (not functional)

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@5015 7fd9a85b-ad96-42d3-883c-3090e2eb8679

nuttx/ChangeLog

@@ -3131,4 +3131,11 @@
 	  point numbers.
 	* lib/stdio/lib_libdtoa.c and lib_libvsprintf.c:  Correct some floating
 	  point options.
+	* arch/arm/lpc43xx/lpc32_usb0dev.c:  Add framework for development of
+	  an USB0, device-side driver for the LPC43XX.  The initial check-in,
+	  however, is simply for the LPC31xx driver with name changes.  The
+	  LPC31xx has the same USB IP, but will require some additional initialization
+	  (and lots of testing) before it can be used with the LPC43xx.
+	* nuttx/Documentation/NuttShell.html:  Added a section covering ways to
+	  customize the behavior or NSH.
 

nuttx/Documentation/NuttX.html

@@ -256,14 +256,6 @@
   </td>
 </tr>
 
-<tr>
-  <td><br></td>
-  <td>
-    <p>
-      <li>Modular, micro-kernel</li>
-    </p>
-</tr>
-
 <tr>
   <td><br></td>
   <td>
@@ -365,7 +357,7 @@
 <tr>
   <td><br></td>
   <td>
-    <p>System logging.</li>
+    <li>System logging.</li>
     </p>
 </tr>
 
@@ -677,7 +669,7 @@
   <td><br></td>
   <td>
     <p>
-      <li>USB device controller drivers available for the NXP LPC17xx, LPC214x, LPC313x, STMicro STM32 and TI DM320.</li>
+      <li>USB device controller drivers available for the PIC32, NXP LPC17xx, LPC214x, LPC313x, LPC43xx, STMicro STM32 and TI DM320.</li>
     </p>
 </tr>
 <tr>
@@ -776,7 +768,7 @@
   <td><br></td>
   <td>
     <p>
-      <li>Support for Analog-to-Digital conversion (ADC) and Digital-to-Analog conversion (DAC).</li>
+      <li>Support for Analog-to-Digital conversion (ADC), Digital-to-Analog conversion (DAC), multiplexers, and amplifiers.</li>
     </p>
 </tr>
 

nuttx/TODO

@@ -1,4 +1,4 @@
-NuttX TODO List (Last updated August 3, 2012)
+NuttX TODO List (Last updated August 7, 2012)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 This file summarizes known NuttX bugs, limitations, inconsistencies with 
@@ -22,7 +22,7 @@ nuttx/
   (1)  Documentation (Documentation/)
   (6)  Build system / Toolchains
   (5)  Linux/Cywgin simulation (arch/sim)
-  (5)  ARM (arch/arm/)
+  (6)  ARM (arch/arm/)
   (1)  ARM/C5471 (arch/arm/src/c5471/)
   (3)  ARM/DM320 (arch/arm/src/dm320/)
   (2)  ARM/i.MX (arch/arm/src/imx/)
@@ -919,7 +919,7 @@ o Build system
   Status:      Open
   Priority:    Low.
 
-  Title:       KERNEL BUILD MODE ISSUES
+  Title:       KERNEL BUILD MODE ISSUES - GRAPHICS/NSH PARTITIONING.
   Description: In the kernel build mode (where NuttX is built as a monlithic
                kernel and user code must trap into the protected kernel via
                syscalls), the single user mode cannot be supported.  In this
@@ -928,6 +928,9 @@ o Build system
                this case, most of the user end functions in graphics/nxmu
                must be moved to lib/nx and those functions must be built into
                libuser.a to be linked with the user-space code.
+               A similar issue exists in NSH that uses some internal OS
+               interfaces that would not be available in a kernel build
+               (such as foreach_task, foreach_mountpoint, etc.).
   Status:      Open
   Priority:    Low -- the kernel build configuration is not fully fielded
                yet.
@@ -1077,7 +1080,21 @@ o ARM (arch/arm/)
   Priority:    Low.  The conditions of continous interrupts is really the problem.
                If your design needs continous interrupts like this, please try
                the above change and, please, submit a patch with the working fix.
- 
+
+  Title:       KERNEL MODE ISSUES - HANDLERS
+  Description: The is a design flaw in the ARM/Cortex trap handlers.  Currently,
+               they try to process the SYSCALL within the trap handler.  That
+               cannot work.  There are two possibilities to fix this.
+               1) Just enable interrupts in the trap handler and make sure that
+                  that sufficient protection is in place to handler the nested
+                  interrupts, or
+               3) Return from the exception via a trampoline (such as is
+                  currently done for signal handlers).  In the trampoline,
+                  the trap would processed in supervisor mode with interrupts
+                  enabled.
+  Status:      Open
+  Priority:    medium-high.
+
 o ARM/C5471 (arch/arm/src/c5471/)
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 

nuttx/arch/arm/src/lpc43xx/Make.defs

@@ -117,3 +117,10 @@ ifeq ($(CONFIG_LPC43_DAC),y)
 CHIP_CSRCS += lpc43_adc.c
 endif
 endif
+
+ifeq ($(CONFIG_LPC43_USB0),y)
+ifeq ($(CONFIG_USBDEV),y)
+CHIP_CSRCS	+= lpc31_usb0dev.c
+endif
+endif
+