configs/lpcxpresso-lpc54628/lvgl: Add LittlevGL graphics demo configuration.

configs/lpcxpresso-lpc54628/README.txt

@@ -229,6 +229,27 @@ Configurations
       interrupts are not supported on P4.  So polled mode only for this
       puppy.
 
+  lvgl
+  ----
+    This is a demonstration of the LittlevGL graphics library running on
+    the NuttX frame buffer driver (as in the fb configuration).  You can
+    find LittlevGL here:
+
+      https://littlevgl.com/
+      https://github.com/littlevgl
+
+    This configuration uses the LittlevGL demonstration at apps/examples/lvgldemo.
+
+    NOTES:
+
+    1. The LittlevGL demonstration is quit large, due mostly to some large
+       graphic images.  So memory is tight in the LPC54628's 512Kb FLASH.  In
+       fact, if you disable optimization, the demo will not fit into FLASH
+       memory (at least not with debug output also enabled).
+
+       A longer term solution might load the large images into the abundant
+       SDRAM at runtime instead of linking it statically in FLASH.
+
   netnsh:
   ------
     This is a special version of the NuttShell (nsh) configuration that is

configs/lpcxpresso-lpc54628/lvgl/defconfig

+# CONFIG_ARCH_FPU is not set
+# CONFIG_LV_FONT_ANTIALIAS is not set
+CONFIG_ARCH_BOARD_LPCXPRESSO_LPC54628=y
+CONFIG_ARCH_BOARD="lpcxpresso-lpc54628"
+CONFIG_ARCH_CHIP_LPC54628=y
+CONFIG_ARCH_CHIP_LPC54XX=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_STDARG_H=y
+CONFIG_ARCH="arm"
+CONFIG_BOARD_LOOPSPERMSEC=21082
+CONFIG_BUILTIN=y
+CONFIG_DRIVERS_VIDEO=y
+CONFIG_EXAMPLES_LVGLDEMO=y
+CONFIG_FS_PROCFS=y
+CONFIG_FT5X06_POLLMODE=y
+CONFIG_FT5X06_SINGLEPOINT=y
+CONFIG_FT5X06_SWAPXY=y
+CONFIG_GRAPHICS_LVGL=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_HOST_WINDOWS=y
+CONFIG_INPUT_FT5X06=y
+CONFIG_INPUT=y
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIB_BOARDCTL=y
+CONFIG_LPC54_EMC_DYNAMIC_CS0_OFFSET=0x00080000
+CONFIG_LPC54_EMC_DYNAMIC_CS0_SIZE=0x00f80000
+CONFIG_LPC54_EMC_DYNAMIC_CS0=y
+CONFIG_LPC54_EMC=y
+CONFIG_LPC54_GPIOIRQ=y
+CONFIG_LPC54_I2C2_MASTER=y
+CONFIG_LPC54_LCD_BGR=y
+CONFIG_LPC54_LCD_BPP16_565=y
+CONFIG_LPC54_LCD_HBACKPORCH=43
+CONFIG_LPC54_LCD_HFRONTPORCH=8
+CONFIG_LPC54_LCD_VBACKPORCH=12
+CONFIG_LPC54_LCD_VFRONTPORCH=4
+CONFIG_LPC54_LCD_VPULSE=10
+CONFIG_LPC54_LCD_VRAMBASE=0xa0000000
+CONFIG_LPC54_LCD=y
+CONFIG_LPC54_USART0=y
+CONFIG_LV_HOR_RES=480
+CONFIG_LV_VER_RES=272
+CONFIG_MAX_TASKS=16
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_MM_REGIONS=2
+CONFIG_NFILE_DESCRIPTORS=8
+CONFIG_NFILE_STREAMS=8
+CONFIG_PREALLOC_MQ_MSGS=4
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_RAM_SIZE=163840
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_HPWORK=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_TASK_NAME_SIZE=32
+CONFIG_USART0_SERIAL_CONSOLE=y
+CONFIG_USE_LV_FONT_DEJAVU_40_CYRILLIC=y
+CONFIG_USE_LV_FONT_DEJAVU_40_LATIN_EXT_A=y
+CONFIG_USE_LV_FONT_DEJAVU_40_LATIN_EXT_B=y
+CONFIG_USE_LV_FONT_DEJAVU_40_SUP=y
+CONFIG_USE_LV_FONT_SYMBOL_40_BASIC=y
+CONFIG_USE_LV_FONT_SYMBOL_40_FEEDBACK=y
+CONFIG_USE_LV_FONT_SYMBOL_40_FILE=y
+CONFIG_USER_ENTRYPOINT="lvgldemo_main"
+CONFIG_VIDEO_FB=y
+CONFIG_WDOG_INTRESERVE=0