Build system: Fix CONFIG_BUILD_KERNEL logic directories that have ubin and kbin subdirectories. Conditional logic was fine for CONFIG_BUILD_FLAT and CONFIG_BUILD_PROTECTED but generated useless dependencies if CONFIG_BUILD_KERNEL.

configs/stm32f429i-disco/README.txt

@@ -949,12 +949,20 @@ Where <subdir> is one of the following:
        2015-04-30
           Appears to be fully functional.
 
+  nx
+  --
+
+    This a simple test using the graphic example at apps/example/nx.  This
+    configuration illustrates the use of the LCD with the lower performance
+    SPI interface.
+
   nxwm
   ----
     This is a special configuration setup for the NxWM window manager
     UnitTest.
 
     NOTES:
+
     1. The NxWM window manager can be found here:
 
          nuttx-code/NxWidgets/nxwm
@@ -972,12 +980,15 @@ Where <subdir> is one of the following:
 
        1. Install the nxwm configuration
 
-          $ cd ~/nuttx-code/nuttx/tools
+          $ cd ~/nuttx-code/nuttx
-          $ ./configure.sh stm32f429i-disco/nxwm
+          $ tools/configure.sh -l stm32f429i-disco/nxwm
+
+          When the -l option on configure.sh indicates that you are
+          configuring for a Linux host build environment.   Try
+          'tools/configure.sh -h' for other options.
 
        2. Make the build context (only)
 
-          $ cd ..
           $ make context
           ...
 
@@ -986,8 +997,8 @@ Where <subdir> is one of the following:
           $ cd ~/nuttx-code/NxWidgets
           $ tools/install.sh ~/nuttx-code/apps nxwm
           Creating symbolic link
-        - To ~/nuttx-code/NxWidgets/UnitTests/nxwm
+           - To ~/nuttx-code/NxWidgets/UnitTests/nxwm
-        - At ~/nuttx-code/apps/external
+           - At ~/nuttx-code/apps/external
 
        4. Build the NxWidgets library
 
@@ -1006,19 +1017,25 @@ Where <subdir> is one of the following:
           $ cd ~/nuttx-code/nuttx
           $ make
 
-    3. Performance is not so good in this example configuration because it
-       uses the slower SPI interfaces.
-
     STATUS:
       17-01-08:  There are instabilities in this configuration that make it
-      not usable on this platform.  While the equivalent configuration works
+        not usable on this platform.  While the equivalent configuration works
-      on other platforms, this one does not:  The calculator display does
+        on other platforms, this one does not:  The calculator display does
-      not form properly.  There are fails in the NxTerm display, usually around
+        not form properly.  There are fails in the NxTerm display, usually
-      the point where the display should scroll up.
+        around the point where the display should scroll up.
 
-      Update:  With all optimizations disabled, the issue seems to go away.
+        Update:  With all optimizations disabled, the issue seems to go away.
-      So this is most likely due to using high levels of optimization with a
+        So this is most likely due to using high levels of optimization with a
-      bleeding edge GCC toolchain.
+        bleeding edge GCC toolchain.
+      17-11-15: The original configuration used the slower SPI LCD interface.
+        The configuration was converted to use the high performance LTDC frame
+        buffer interface.  Performance is now excellent and I see none of the
+        instabilities mentioned above even at high levels of optimization.
+
+        The difficulty that I experienced was touching the tiny icons on the
+        menus.  The touscreen controller (along with my fat fingers) does not
+        appear to have sufficient precision to work in this way.  Larger icons
+        would likely make the interface easier to use.
 
   usbnsh:
   ------

configs/stm32f429i-disco/fb/defconfig

@@ -54,7 +54,7 @@ CONFIG_START_MONTH=12
 CONFIG_START_YEAR=2011
 CONFIG_STM32_CCMEXCLUDE=y
 CONFIG_STM32_DISABLE_IDLE_SLEEP_DURING_DEBUG=y
-CONFIG_STM32_DMA2D_NLAYERS=4
+CONFIG_STM32_DMA2D_NLAYERS=1
 CONFIG_STM32_DMA2D=y
 CONFIG_STM32_FSMC_SRAM=y
 CONFIG_STM32_FSMC=y

configs/stm32f429i-disco/nxwm/defconfig

@@ -1,6 +1,4 @@
 # CONFIG_ARCH_FPU is not set
-# CONFIG_NSH_DISABLE_IFCONFIG is not set
-# CONFIG_NSH_DISABLE_PS is not set
 # CONFIG_NX_DISABLE_16BPP is not set
 # CONFIG_NXTK_DEFAULT_BORDERCOLORS is not set
 # CONFIG_STM32_FLASH_PREFETCH is not set
@@ -22,20 +20,17 @@ CONFIG_DISABLE_POLL=y
 CONFIG_FAT_LCNAMES=y
 CONFIG_FAT_LFN=y
 CONFIG_FS_FAT=y
+CONFIG_FS_PROCFS=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
-CONFIG_HEAP2_BASE=0xD0000000
+CONFIG_HEAP2_BASE=0xd0000000
-CONFIG_HEAP2_SIZE=8388608
+CONFIG_HEAP2_SIZE=8081408
-CONFIG_I2C_POLLED=y
 CONFIG_INPUT_STMPE811=y
 CONFIG_INPUT=y
 CONFIG_INTELHEX_BINARY=y
-CONFIG_LCD_ILI9341_IFACE0=y
-CONFIG_LCD_ILI9341=y
-CONFIG_LCD=y
 CONFIG_MAX_TASKS=16
 CONFIG_MAX_WDOGPARMS=2
-CONFIG_MM_REGIONS=3
+CONFIG_MM_REGIONS=2
 CONFIG_MQ_MAXMSGSIZE=64
 CONFIG_NFILE_DESCRIPTORS=8
 CONFIG_NFILE_STREAMS=8
@@ -69,10 +64,12 @@ CONFIG_NXWIDGETS_DEFAULT_SHADOWEDGECOLOR=0x21e9
 CONFIG_NXWIDGETS_DEFAULT_SHINEEDGECOLOR=0xffdf
 CONFIG_NXWIDGETS_SIZEOFCHAR=1
 CONFIG_NXWIDGETS=y
+CONFIG_NXWM_CALIBRATION_MESSAGES=y
+CONFIG_NXWM_CALIBRATION_AVERAGE=y
+CONFIG_NXWM_CALIBRATION_NSAMPLES=2
 CONFIG_NXWM_HEXCALCULATOR_CUSTOM_FONTID=y
 CONFIG_NXWM_HEXCALCULATOR_FONTID=5
 CONFIG_NXWM_KEYBOARD=y
-CONFIG_NXWM_STARTWINDOW_MQNAME="nxwm"
 CONFIG_NXWM_TASKBAR_LEFT=y
 CONFIG_NXWM_TASKBAR_VSPACING=4
 CONFIG_NXWM_TOUCHSCREEN_LISTENERSTACK=1596
@@ -92,15 +89,20 @@ CONFIG_SDCLONE_DISABLE=y
 CONFIG_START_DAY=6
 CONFIG_START_MONTH=12
 CONFIG_START_YEAR=2011
+CONFIG_STM32_CCMEXCLUDE=y
 CONFIG_STM32_DISABLE_IDLE_SLEEP_DURING_DEBUG=y
+CONFIG_STM32_DMA2D_NLAYERS=1
+CONFIG_STM32_DMA2D=y
 CONFIG_STM32_FSMC_SRAM=y
 CONFIG_STM32_FSMC=y
 CONFIG_STM32_I2C3=y
 CONFIG_STM32_JTAG_SW_ENABLE=y
+CONFIG_STM32_LTDC_FB_BASE=0xd07b5000
+CONFIG_STM32_LTDC_FB_SIZE=307200
+CONFIG_STM32_LTDC_INTERFACE=y
+CONFIG_STM32_LTDC=y
 CONFIG_STM32_PWR=y
 CONFIG_STM32_USART1=y
-CONFIG_STM32F429I_DISCO_ILI9341_SPIBITS16=y
-CONFIG_STM32F429I_DISCO_ILI9341_SPIFREQUENCY=20000000
 CONFIG_STM32F429I_DISCO_ILI9341=y
 CONFIG_STMPE811_ACTIVELOW=y
 CONFIG_STMPE811_EDGE=y