Update README, some comments, and fix some spacing.

configs/stm32f429i-disco/README.txt

@@ -35,8 +35,10 @@ Contents
 
   - Development Environment
   - GNU Toolchain Options
+  - Setup and Programming Flash
   - LEDs
   - UARTs
+  - Ser
   - Timer Inputs/Outputs
   - FPU
   - FSMC SRAM
@@ -46,10 +48,27 @@ Contents
 Development Environment
 =======================
 
-  The Development environments for the STM32F429I-DISCO board are identical
+The Development environments for the STM32F429I-DISCO board are identical
-  to the environments for other STM32F boards.  For full details on the
+to the environments for other STM32F boards.  For full details on the
-  environment options and setup, see the README.txt file in the
+environment options and setup, see the README.txt file in the
-  config/stm32f4discovery directory.
+config/stm32f4discovery directory.
+
+Setup and Programming Flash
+===========================
+
+I use a USB cable to power and program it.  And I use a USB/Serial
+connected to pins PA9 and PA10 for the serial console.
+
+FLASH may be programmed:
+
+  - Via USB using STM32 ST-Link Utility
+
+  - Via USB using OpenOCD.  This command may be used to flash the
+    firmware using OpenOCD:
+
+    $ sudo openocd -f interface/stlink-v2.cfg -f target/stm32f4x.cfg -c init -c "reset halt" -c "flash write_image erase nuttx.bin 0x08000000"
+
+  - Via JTAG/SWD connected to the SWD connector CN2.
 
 LEDs
 ====
@@ -132,7 +151,7 @@ Default USART/UART Configuration
 --------------------------------
 
 USART1 is enabled in all configurations (see */defconfig).  RX and TX are
-configured on pins PA3 and PA2, respectively (see include/board.h).
+configured on pins PA10 and PA9, respectively (see include/board.h).
 
 Timer Inputs/Outputs
 ====================
@@ -240,7 +259,7 @@ the following lines in each Make.defs file:
 Configuration Changes
 ---------------------
 
-Below are all of the configuration changes that I had to make to configs/stm3240g-eval/nsh2
+Below are all of the configuration changes that I had to make to configs/stm32f429i-disco/nsh2
 in order to successfully build NuttX using the Atollic toolchain WITH FPU support:
 
   -CONFIG_ARCH_FPU=n                       : Enable FPU support
@@ -598,6 +617,30 @@ instead of configure.sh:
 
 Where <subdir> is one of the following:
 
+  extflash:
+  ---------
+
+    This is another NSH example.  If differs from other 'nsh' configurations
+    in that this configuration defines an external 8 MByte SPI FLASH (the
+    SST25VF064C part from Silicon Storage Technology, Inc.) which must be
+    be connected to the Discovery board's SPI4 pins on the expansion pins.
+    Additionally, this demo uses UART1 for the console
+
+    NOTES:
+
+    1. This configuration assumes an SST25VF064C 8Mbyte SPI FLASH is
+       connected to SPI4 on the following Discovery board Pins:
+
+       SCK:   Port PE2   Board Connector P1, Pin 15
+       MOSI:  Port PE6   Board Connector P1, Pin 11
+       MISO:  Port PE5   Board Connector P1, Pin 14
+       CS:    Port PE4   Board Connector P1, Pin 13
+
+    2. This configuration does have UART1 output enabled and set up as
+       the system logging device.  To use this UART, you must add an
+       external RS-232 line driver to the UART1 pins of the DISCO board
+       on PA9 and PA10 of connector P1.
+
   ltdc:
   ----
     STM32F429I-DISCO LTDC Framebuffer demo example.  See
@@ -843,29 +886,60 @@ Where <subdir> is one of the following:
        2015-04-30
           Appears to be fully functional.
 
-  extflash:
+  nxwm
-  ---------
+  ----
+    This is a special configuration setup for the NxWM window manager
+    UnitTest.  The NxWM window manager can be found here:
 
-    This is another NSH example.  If differs from other 'nsh' configurations
+      nuttx-code/NxWidgets/nxwm
-    in that this configuration defines an external 8 MByte SPI FLASH (the
-    SST25VF064C part from Silicon Storage Technology, Inc.) which must be
-    be connected to the Discovery board's SPI4 pins on the expansion pins.
-    Additionally, this demo uses UART1 for the console
 
-    NOTES:
+    The NxWM unit test can be found at:
 
-    1. This configuration assumes an SST25VF064C 8Mbyte SPI FLASH is
+      nuttx-code/NxWidgets/UnitTests/nxwm
-       connected to SPI4 on the following Discovery board Pins:
 
-       SCK:   Port PE2   Board Connector P1, Pin 15
+    Documentation for installing the NxWM unit test can be found here:
-       MOSI:  Port PE6   Board Connector P1, Pin 11
-       MISO:  Port PE5   Board Connector P1, Pin 14
-       CS:    Port PE4   Board Connector P1, Pin 13
 
-    2. This configuration does have UART1 output enabled and set up as
+      nuttx-code/NxWidgets/UnitTests/README.txt
-       the system logging device.  To use this UART, you must add an
+
-       external RS-232 line driver to the UART1 pins of the DISCO board
+    Here is the quick summary of the build steps (Assuming that all of
-       on PA9 and PA10 of connector P1.
+    the required packages are available in a directory ~/nuttx-code):
+
+    1. Install the nxwm configuration
+
+       $ cd ~/nuttx-code/nuttx/tools
+       $ ./configure.sh stm32f429i-disco/nxwm
+
+    2. Make the build context (only)
+
+       $ cd ..
+       $ . ./setenv.sh
+       $ make context
+       ...
+
+    3. Install the nxwm unit test
+
+       $ cd ~/nuttx-code/NxWidgets
+       $ tools/install.sh ~/nuttx-code/apps nxwm
+       Creating symbolic link
+        - To ~/nuttx-code/NxWidgets/UnitTests/nxwm
+        - At ~/nuttx-code/apps/external
+
+    4. Build the NxWidgets library
+
+       $ cd ~/nuttx-code/NxWidgets/libnxwidgets
+       $ make TOPDIR=~/nuttx-code/nuttx
+       ...
+
+    5. Build the NxWM library
+
+       $ cd ~/nuttx-code/NxWidgets/nxwm
+       $ make TOPDIR=~/nuttx-code/nuttx
+       ...
+
+    6. Built NuttX with the installed unit test as the application
+
+       $ cd ~/nuttx-code/nuttx
+       $ make
 
   usbnsh:
   ------

configs/stm32f429i-disco/src/stm32_boot.c

@@ -70,6 +70,7 @@
 #   define HAVE_NXSTART
 #   include <nuttx/nx/nx.h>
 #endif
+
 /* Should we initialize the touchscreen for the NxWM (CONFIG_NXWM=y)?  This
  * is done if we have a touchscreen (CONFIG_INPUT_STMPE811=y), NxWM uses the
  * touchscreen (CONFIG_NXWM_TOUCHSCREEN=y), and if we were asked to
@@ -122,11 +123,6 @@
 #  endif
 #endif
 
-
-/************************************************************************************
- * Private Functions
- ************************************************************************************/
-
 /************************************************************************************
  * Public Functions
  ************************************************************************************/

libc/stdio/lib_dtoa.c

@@ -591,6 +591,7 @@ static int cmp(Bigint * a, Bigint * b)
           break;
         }
     }
+
   return 0;
 }
 
@@ -784,6 +785,7 @@ static Bigint *d2b(double d, int *e, int *bits)
     }
   while (!x[i])
     --i;
+
   b->wds = i + 1;
 #endif
   if (de)
@@ -855,6 +857,7 @@ static int quorem(Bigint * b, Bigint * S)
       lerr("ERROR: oversize b in quorem\n");
     }
 #endif
+`
   if (b->wds < n)
     {
       return 0;
@@ -867,15 +870,16 @@ static int quorem(Bigint * b, Bigint * S)
   q = *bxe / (*sxe + 1);        /* ensure q <= true quotient */
 #ifdef CONFIG_DEBUG_LIB
   if (q > 9)
-   {
+    {
-     lerr("ERROR: oversized quotient in quorem\n");
+      lerr("ERROR: oversized quotient in quorem\n");
-   }
+    }
 #endif
 
   if (q)
     {
       borrow = 0;
       carry = 0;
+
       do
         {
 #ifdef Pack_32
@@ -912,6 +916,7 @@ static int quorem(Bigint * b, Bigint * S)
           b->wds = n;
         }
     }
+
   if (cmp(b, S) >= 0)
     {
       q++;
@@ -919,6 +924,7 @@ static int quorem(Bigint * b, Bigint * S)
       carry = 0;
       bx = b->x;
       sx = S->x;
+
       do
         {
 #ifdef Pack_32
@@ -943,6 +949,7 @@ static int quorem(Bigint * b, Bigint * S)
 #endif
         }
       while (sx <= sxe);
+
       bx = b->x;
       bxe = bx + n;
       if (!*bxe)

libnx/nxfonts/nxfonts_cache.c

@@ -52,6 +52,7 @@
 /****************************************************************************
  * Private Types
  ****************************************************************************/
+
 /* This describes a rendering function */
 
 typedef CODE int (*nxf_renderer_t)(FAR nxgl_mxpixel_t *dest, uint16_t height,