linuxOS_AP05/buildroot/package/rockchip/lvgl/0006-add-lv_conf.h.patch

From ccc851954418f9e99cf5ae98047edc36e7a288c0 Mon Sep 17 00:00:00 2001
From: Jinkun Hong <jinkun.hong@rock-chips.com>
Date: Mon, 6 Jun 2022 09:47:42 +0800
Subject: [PATCH 6/6] add lv_conf.h

Signed-off-by: Jinkun Hong <jinkun.hong@rock-chips.com>
---
 src/lv_conf.h | 564 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 564 insertions(+)
 create mode 100644 src/lv_conf.h

diff --git a/src/lv_conf.h b/src/lv_conf.h
new file mode 100644
index 0000000..7e85abf
--- /dev/null
+++ b/src/lv_conf.h
@@ -0,0 +1,564 @@
+/**
+ * @file lv_conf.h
+ * Configuration file for v8.1.0-dev
+ */
+
+/*
+ * Copy this file as `lv_conf.h`
+ * 1. simply next to the `lvgl` folder
+ * 2. or any other places and
+ *    - define `LV_CONF_INCLUDE_SIMPLE`
+ *    - add the path as include path
+ */
+
+/* clang-format off */
+#if 1 /*Set it to "1" to enable content*/
+
+#ifndef LV_CONF_H
+#define LV_CONF_H
+
+#include <stdint.h>
+
+/*====================
+   COLOR SETTINGS
+ *====================*/
+
+/*Color depth: 1 (1 byte per pixel), 8 (RGB332), 16 (RGB565), 32 (ARGB8888)*/
+#define LV_COLOR_DEPTH     32
+
+/*Swap the 2 bytes of RGB565 color. Useful if the display has a 8 bit interface (e.g. SPI)*/
+#define LV_COLOR_16_SWAP   0
+
+/*Enable more complex drawing routines to manage screens transparency.
+ *Can be used if the UI is above another layer, e.g. an OSD menu or video player.
+ *Requires `LV_COLOR_DEPTH = 32` colors and the screen's `bg_opa` should be set to non LV_OPA_COVER value*/
+#define LV_COLOR_SCREEN_TRANSP    1
+
+/*Images pixels with this color will not be drawn if they are  chroma keyed)*/
+#define LV_COLOR_CHROMA_KEY    lv_color_hex(0x00ff00)         /*pure green*/
+
+/*=========================
+   MEMORY SETTINGS
+ *=========================*/
+
+/*1: use custom malloc/free, 0: use the built-in `lv_mem_alloc()` and `lv_mem_free()`*/
+#define LV_MEM_CUSTOM      1
+#if LV_MEM_CUSTOM == 0
+/*Size of the memory available for `lv_mem_alloc()` in bytes (>= 2kB)*/
+#  define LV_MEM_SIZE    (32U * 1024U)          /*[bytes]*/
+
+/*Set an address for the memory pool instead of allocating it as a normal array. Can be in external SRAM too.*/
+#  define LV_MEM_ADR          0     /*0: unused*/
+#else       /*LV_MEM_CUSTOM*/
+#  define LV_MEM_CUSTOM_INCLUDE <stdlib.h>   /*Header for the dynamic memory function*/
+#  define LV_MEM_CUSTOM_ALLOC     malloc
+#  define LV_MEM_CUSTOM_FREE      free
+#  define LV_MEM_CUSTOM_REALLOC   realloc
+#endif     /*LV_MEM_CUSTOM*/
+
+/*Use the standard `memcpy` and `memset` instead of LVGL's own functions. (Might or might not be faster).*/
+#define LV_MEMCPY_MEMSET_STD    0
+
+/*====================
+   HAL SETTINGS
+ *====================*/
+
+/*Default display refresh period. LVG will redraw changed ares with this period time*/
+#define LV_DISP_DEF_REFR_PERIOD     10      /*[ms]*/
+
+/*Input device read period in milliseconds*/
+#define LV_INDEV_DEF_READ_PERIOD    10      /*[ms]*/
+
+/*Use a custom tick source that tells the elapsed time in milliseconds.
+ *It removes the need to manually update the tick with `lv_tick_inc()`)*/
+#define LV_TICK_CUSTOM     0
+#if LV_TICK_CUSTOM
+#define LV_TICK_CUSTOM_INCLUDE  "Arduino.h"         /*Header for the system time function*/
+#define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis())     /*Expression evaluating to current system time in ms*/
+#endif   /*LV_TICK_CUSTOM*/
+
+/*Default Dot Per Inch. Used to initialize default sizes such as widgets sized, style paddings.
+ *(Not so important, you can adjust it to modify default sizes and spaces)*/
+#define LV_DPI_DEF                  130     /*[px/inch]*/
+
+/*=======================
+ * FEATURE CONFIGURATION
+ *=======================*/
+
+/*-------------
+ * Drawing
+ *-----------*/
+
+/*Enable complex draw engine.
+ *Required to draw shadow, gradient, rounded corners, circles, arc, skew lines, image transformations or any masks*/
+#define LV_DRAW_COMPLEX 1
+#if LV_DRAW_COMPLEX != 0
+
+/*Allow buffering some shadow calculation.
+ *LV_SHADOW_CACHE_SIZE is the max. shadow size to buffer, where shadow size is `shadow_width + radius`
+ *Caching has LV_SHADOW_CACHE_SIZE^2 RAM cost*/
+#define LV_SHADOW_CACHE_SIZE    0
+
+/* Set number of maximally cached circle data.
+ * The circumference of 1/4 circle are saved for anti-aliasing
+ * radius * 4 bytes are used per circle (the most often used radiuses are saved)
+ * 0: to disable caching */
+#define LV_CIRCLE_CACHE_SIZE    4
+
+#endif /*LV_DRAW_COMPLEX*/
+
+/*Default image cache size. Image caching keeps the images opened.
+ *If only the built-in image formats are used there is no real advantage of caching. (I.e. if no new image decoder is added)
+ *With complex image decoders (e.g. PNG or JPG) caching can save the continuous open/decode of images.
+ *However the opened images might consume additional RAM.
+ *0: to disable caching*/
+#define LV_IMG_CACHE_DEF_SIZE       500
+
+/*Maximum buffer size to allocate for rotation. Only used if software rotation is enabled in the display driver.*/
+#define LV_DISP_ROT_MAX_BUF         (10*1024)
+
+/*-------------
+ * GPU
+ *-----------*/
+
+/*Use STM32's DMA2D (aka Chrom Art) GPU*/
+#define LV_USE_GPU_STM32_DMA2D  0
+#if LV_USE_GPU_STM32_DMA2D
+/*Must be defined to include path of CMSIS header of target processor
+e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
+#define LV_GPU_DMA2D_CMSIS_INCLUDE
+#endif
+
+/*Use NXP's PXP GPU iMX RTxxx platforms*/
+#define LV_USE_GPU_NXP_PXP      0
+#if LV_USE_GPU_NXP_PXP
+/*1: Add default bare metal and FreeRTOS interrupt handling routines for PXP (lv_gpu_nxp_pxp_osa.c)
+ *   and call lv_gpu_nxp_pxp_init() automatically during lv_init(). Note that symbol SDK_OS_FREE_RTOS
+ *   has to be defined in order to use FreeRTOS OSA, otherwise bare-metal implementation is selected.
+ *0: lv_gpu_nxp_pxp_init() has to be called manually before lv_init()
+ */
+#define LV_USE_GPU_NXP_PXP_AUTO_INIT 0
+#endif
+
+/*Use NXP's VG-Lite GPU iMX RTxxx platforms*/
+#define LV_USE_GPU_NXP_VG_LITE   0
+
+/*-------------
+ * Logging
+ *-----------*/
+
+/*Enable the log module*/
+#define LV_USE_LOG      0
+#if LV_USE_LOG
+
+/*How important log should be added:
+ *LV_LOG_LEVEL_TRACE       A lot of logs to give detailed information
+ *LV_LOG_LEVEL_INFO        Log important events
+ *LV_LOG_LEVEL_WARN        Log if something unwanted happened but didn't cause a problem
+ *LV_LOG_LEVEL_ERROR       Only critical issue, when the system may fail
+ *LV_LOG_LEVEL_USER        Only logs added by the user
+ *LV_LOG_LEVEL_NONE        Do not log anything*/
+#  define LV_LOG_LEVEL    LV_LOG_LEVEL_WARN
+
+/*1: Print the log with 'printf';
+ *0: User need to register a callback with `lv_log_register_print_cb()`*/
+#  define LV_LOG_PRINTF   0
+
+/*Enable/disable LV_LOG_TRACE in modules that produces a huge number of logs*/
+#  define LV_LOG_TRACE_MEM            1
+#  define LV_LOG_TRACE_TIMER          1
+#  define LV_LOG_TRACE_INDEV          1
+#  define LV_LOG_TRACE_DISP_REFR      1
+#  define LV_LOG_TRACE_EVENT          1
+#  define LV_LOG_TRACE_OBJ_CREATE     1
+#  define LV_LOG_TRACE_LAYOUT         1
+#  define LV_LOG_TRACE_ANIM           1
+
+#endif  /*LV_USE_LOG*/
+
+/*-------------
+ * Asserts
+ *-----------*/
+
+/*Enable asserts if an operation is failed or an invalid data is found.
+ *If LV_USE_LOG is enabled an error message will be printed on failure*/
+#define LV_USE_ASSERT_NULL          1   /*Check if the parameter is NULL. (Very fast, recommended)*/
+#define LV_USE_ASSERT_MALLOC        1   /*Checks is the memory is successfully allocated or no. (Very fast, recommended)*/
+#define LV_USE_ASSERT_STYLE         0   /*Check if the styles are properly initialized. (Very fast, recommended)*/
+#define LV_USE_ASSERT_MEM_INTEGRITY 0   /*Check the integrity of `lv_mem` after critical operations. (Slow)*/
+#define LV_USE_ASSERT_OBJ           0   /*Check the object's type and existence (e.g. not deleted). (Slow)*/
+
+/*Add a custom handler when assert happens e.g. to restart the MCU*/
+#define LV_ASSERT_HANDLER_INCLUDE   <stdint.h>
+#define LV_ASSERT_HANDLER   while(1);   /*Halt by default*/
+
+/*-------------
+ * Others
+ *-----------*/
+
+/*1: Show CPU usage and FPS count in the right bottom corner*/
+#define LV_USE_PERF_MONITOR     0
+
+/*1: Show the used memory and the memory fragmentation  in the left bottom corner
+ * Requires LV_MEM_CUSTOM = 0*/
+#define LV_USE_MEM_MONITOR      0
+
+/*1: Draw random colored rectangles over the redrawn areas*/
+#define LV_USE_REFR_DEBUG       0
+
+/*Change the built in (v)snprintf functions*/
+#define LV_SPRINTF_CUSTOM   0
+#if LV_SPRINTF_CUSTOM
+#  define LV_SPRINTF_INCLUDE <stdio.h>
+#  define lv_snprintf     snprintf
+#  define lv_vsnprintf    vsnprintf
+#else   /*LV_SPRINTF_CUSTOM*/
+#  define LV_SPRINTF_USE_FLOAT 0
+#endif  /*LV_SPRINTF_CUSTOM*/
+
+#define LV_USE_USER_DATA      1
+
+/*Garbage Collector settings
+ *Used if lvgl is binded to higher level language and the memory is managed by that language*/
+#define LV_ENABLE_GC 0
+#if LV_ENABLE_GC != 0
+#  define LV_GC_INCLUDE "gc.h"                           /*Include Garbage Collector related things*/
+#endif /*LV_ENABLE_GC*/
+
+/*1: Enable API to take snapshot for object*/
+#define LV_USE_SNAPSHOT         1
+
+/*=====================
+ *  COMPILER SETTINGS
+ *====================*/
+
+/*For big endian systems set to 1*/
+#define LV_BIG_ENDIAN_SYSTEM    0
+
+/*Define a custom attribute to `lv_tick_inc` function*/
+#define LV_ATTRIBUTE_TICK_INC
+
+/*Define a custom attribute to `lv_timer_handler` function*/
+#define LV_ATTRIBUTE_TIMER_HANDLER
+
+/*Define a custom attribute to `lv_disp_flush_ready` function*/
+#define LV_ATTRIBUTE_FLUSH_READY
+
+/*Required alignment size for buffers*/
+#define LV_ATTRIBUTE_MEM_ALIGN_SIZE
+
+/*Will be added where memories needs to be aligned (with -Os data might not be aligned to boundary by default).
+ * E.g. __attribute__((aligned(4)))*/
+#define LV_ATTRIBUTE_MEM_ALIGN
+
+/*Attribute to mark large constant arrays for example font's bitmaps*/
+#define LV_ATTRIBUTE_LARGE_CONST
+
+/*Complier prefix for a big array declaration in RAM*/
+#define LV_ATTRIBUTE_LARGE_RAM_ARRAY
+
+/*Place performance critical functions into a faster memory (e.g RAM)*/
+#define LV_ATTRIBUTE_FAST_MEM
+
+/*Prefix variables that are used in GPU accelerated operations, often these need to be placed in RAM sections that are DMA accessible*/
+#define LV_ATTRIBUTE_DMA
+
+/*Export integer constant to binding. This macro is used with constants in the form of LV_<CONST> that
+ *should also appear on LVGL binding API such as Micropython.*/
+#define LV_EXPORT_CONST_INT(int_value) struct _silence_gcc_warning /*The default value just prevents GCC warning*/
+
+/*Extend the default -32k..32k coordinate range to -4M..4M by using int32_t for coordinates instead of int16_t*/
+#define LV_USE_LARGE_COORD  1
+
+/*==================
+ *   FONT USAGE
+ *===================*/
+
+/*Montserrat fonts with ASCII range and some symbols using bpp = 4
+ *https://fonts.google.com/specimen/Montserrat*/
+#define LV_FONT_MONTSERRAT_8     0
+#define LV_FONT_MONTSERRAT_10    0
+#define LV_FONT_MONTSERRAT_12    1
+#define LV_FONT_MONTSERRAT_14    1
+#define LV_FONT_MONTSERRAT_16    1
+#define LV_FONT_MONTSERRAT_18    1
+#define LV_FONT_MONTSERRAT_20    1
+#define LV_FONT_MONTSERRAT_22    1
+#define LV_FONT_MONTSERRAT_24    1
+#define LV_FONT_MONTSERRAT_26    1
+#define LV_FONT_MONTSERRAT_28    1
+#define LV_FONT_MONTSERRAT_30    1
+#define LV_FONT_MONTSERRAT_32    1
+#define LV_FONT_MONTSERRAT_34    0
+#define LV_FONT_MONTSERRAT_36    0
+#define LV_FONT_MONTSERRAT_38    0
+#define LV_FONT_MONTSERRAT_40    0
+#define LV_FONT_MONTSERRAT_42    0
+#define LV_FONT_MONTSERRAT_44    0
+#define LV_FONT_MONTSERRAT_46    0
+#define LV_FONT_MONTSERRAT_48    0
+
+/*Demonstrate special features*/
+#define LV_FONT_MONTSERRAT_12_SUBPX      0
+#define LV_FONT_MONTSERRAT_28_COMPRESSED 0  /*bpp = 3*/
+#define LV_FONT_DEJAVU_16_PERSIAN_HEBREW 0  /*Hebrew, Arabic, Perisan letters and all their forms*/
+#define LV_FONT_SIMSUN_16_CJK            0  /*1000 most common CJK radicals*/
+
+/*Pixel perfect monospace fonts*/
+#define LV_FONT_UNSCII_8        0
+#define LV_FONT_UNSCII_16       0
+
+/*Optionally declare custom fonts here.
+ *You can use these fonts as default font too and they will be available globally.
+ *E.g. #define LV_FONT_CUSTOM_DECLARE   LV_FONT_DECLARE(my_font_1) LV_FONT_DECLARE(my_font_2)*/
+#define LV_FONT_CUSTOM_DECLARE
+
+/*Always set a default font*/
+#define LV_FONT_DEFAULT &lv_font_montserrat_14
+
+/*Enable handling large font and/or fonts with a lot of characters.
+ *The limit depends on the font size, font face and bpp.
+ *Compiler error will be triggered if a font needs it.*/
+#define LV_FONT_FMT_TXT_LARGE   1
+
+/*Enables/disables support for compressed fonts.*/
+#define LV_USE_FONT_COMPRESSED  0
+
+/*Enable subpixel rendering*/
+#define LV_USE_FONT_SUBPX       0
+#if LV_USE_FONT_SUBPX
+/*Set the pixel order of the display. Physical order of RGB channels. Doesn't matter with "normal" fonts.*/
+#define LV_FONT_SUBPX_BGR       0  /*0: RGB; 1:BGR order*/
+#endif
+
+/*=================
+ *  TEXT SETTINGS
+ *=================*/
+
+/**
+ * Select a character encoding for strings.
+ * Your IDE or editor should have the same character encoding
+ * - LV_TXT_ENC_UTF8
+ * - LV_TXT_ENC_ASCII
+ */
+#define LV_TXT_ENC LV_TXT_ENC_UTF8
+
+ /*Can break (wrap) texts on these chars*/
+#define LV_TXT_BREAK_CHARS                  " ,.;:-_"
+
+/*If a word is at least this long, will break wherever "prettiest"
+ *To disable, set to a value <= 0*/
+#define LV_TXT_LINE_BREAK_LONG_LEN          0
+
+/*Minimum number of characters in a long word to put on a line before a break.
+ *Depends on LV_TXT_LINE_BREAK_LONG_LEN.*/
+#define LV_TXT_LINE_BREAK_LONG_PRE_MIN_LEN  3
+
+/*Minimum number of characters in a long word to put on a line after a break.
+ *Depends on LV_TXT_LINE_BREAK_LONG_LEN.*/
+#define LV_TXT_LINE_BREAK_LONG_POST_MIN_LEN 3
+
+/*The control character to use for signalling text recoloring.*/
+#define LV_TXT_COLOR_CMD "#"
+
+/*Support bidirectional texts. Allows mixing Left-to-Right and Right-to-Left texts.
+ *The direction will be processed according to the Unicode Bidirectioanl Algorithm:
+ *https://www.w3.org/International/articles/inline-bidi-markup/uba-basics*/
+#define LV_USE_BIDI         0
+#if LV_USE_BIDI
+/*Set the default direction. Supported values:
+ *`LV_BASE_DIR_LTR` Left-to-Right
+ *`LV_BASE_DIR_RTL` Right-to-Left
+ *`LV_BASE_DIR_AUTO` detect texts base direction*/
+#define LV_BIDI_BASE_DIR_DEF  LV_BASE_DIR_AUTO
+#endif
+
+/*Enable Arabic/Persian processing
+ *In these languages characters should be replaced with an other form based on their position in the text*/
+#define LV_USE_ARABIC_PERSIAN_CHARS 0
+
+/*==================
+ *  WIDGET USAGE
+ *================*/
+
+/*Documentation of the widgets: https://docs.lvgl.io/latest/en/html/widgets/index.html*/
+
+#define LV_USE_ARC          1
+
+#define LV_USE_ANIMIMG	    1
+
+#define LV_USE_BAR          1
+
+#define LV_USE_BTN          1
+
+#define LV_USE_BTNMATRIX    1
+
+#define LV_USE_CANVAS       1
+
+#define LV_USE_CHECKBOX     1
+
+#define LV_USE_DROPDOWN     1   /*Requires: lv_label*/
+
+#define LV_USE_IMG          1   /*Requires: lv_label*/
+
+#define LV_USE_LABEL        1
+#if LV_USE_LABEL
+#  define LV_LABEL_TEXT_SELECTION         1   /*Enable selecting text of the label*/
+#  define LV_LABEL_LONG_TXT_HINT    1   /*Store some extra info in labels to speed up drawing of very long texts*/
+#endif
+
+#define LV_USE_LINE         1
+
+#define LV_USE_ROLLER       1   /*Requires: lv_label*/
+#if LV_USE_ROLLER
+#  define LV_ROLLER_INF_PAGES       7   /*Number of extra "pages" when the roller is infinite*/
+#endif
+
+#define LV_USE_SLIDER       1   /*Requires: lv_bar*/
+
+#define LV_USE_SWITCH    1
+
+#define LV_USE_TEXTAREA   1     /*Requires: lv_label*/
+#if LV_USE_TEXTAREA != 0
+#  define LV_TEXTAREA_DEF_PWD_SHOW_TIME     1500    /*ms*/
+#endif
+
+#define LV_USE_TABLE  1
+
+/*==================
+ * EXTRA COMPONENTS
+ *==================*/
+
+/*-----------
+ * Widgets
+ *----------*/
+#define LV_USE_CALENDAR     1
+#if LV_USE_CALENDAR
+# define LV_CALENDAR_WEEK_STARTS_MONDAY 0
+# if LV_CALENDAR_WEEK_STARTS_MONDAY
+#  define LV_CALENDAR_DEFAULT_DAY_NAMES {"Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"}
+# else
+#  define LV_CALENDAR_DEFAULT_DAY_NAMES {"Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"}
+# endif
+
+# define LV_CALENDAR_DEFAULT_MONTH_NAMES {"January", "February", "March",  "April", "May",  "June", "July", "August", "September", "October", "November", "December"}
+# define LV_USE_CALENDAR_HEADER_ARROW       1
+# define LV_USE_CALENDAR_HEADER_DROPDOWN    1
+#endif  /*LV_USE_CALENDAR*/
+
+#define LV_USE_CHART        1
+
+#define LV_USE_COLORWHEEL   1
+
+#define LV_USE_IMGBTN       1
+
+#define LV_USE_KEYBOARD     1
+
+#define LV_USE_LED          1
+
+#define LV_USE_LIST         1
+
+#define LV_USE_METER        1
+
+#define LV_USE_MSGBOX       1
+
+#define LV_USE_SPINBOX      1
+
+#define LV_USE_SPINNER      1
+
+#define LV_USE_TABVIEW      1
+
+#define LV_USE_TILEVIEW     1
+
+#define LV_USE_WIN          1
+
+#define LV_USE_SPAN         1
+#if LV_USE_SPAN
+/*A line text can contain maximum num of span descriptor */
+#  define LV_SPAN_SNIPPET_STACK_SIZE   64
+#endif
+
+/*-----------
+ * Themes
+ *----------*/
+
+/*A simple, impressive and very complete theme*/
+#define LV_USE_THEME_DEFAULT    1
+#if LV_USE_THEME_DEFAULT
+
+/*0: Light mode; 1: Dark mode*/
+# define LV_THEME_DEFAULT_DARK     0
+
+/*1: Enable grow on press*/
+# define LV_THEME_DEFAULT_GROW              1
+
+/*Default transition time in [ms]*/
+# define LV_THEME_DEFAULT_TRANSITON_TIME    80
+#endif /*LV_USE_THEME_DEFAULT*/
+
+/*An very simple them that is a good starting point for a custom theme*/
+ #define LV_USE_THEME_BASIC    1
+
+/*A theme designed for monochrome displays*/
+#define LV_USE_THEME_MONO       1
+
+/*-----------
+ * Layouts
+ *----------*/
+
+/*A layout similar to Flexbox in CSS.*/
+#define LV_USE_FLEX     1
+
+/*A layout similar to Grid in CSS.*/
+#define LV_USE_GRID     1
+
+/*==================
+* EXAMPLES
+*==================*/
+
+/*Enable the examples to be built with the library*/
+#define LV_BUILD_EXAMPLES   1
+
+
+/*===================
+ * DEMO USAGE
+ ====================*/
+/*Show some widget. It might be required to increase `LV_MEM_SIZE` */
+#define LV_USE_DEMO_WIDGETS        1
+#define LV_DEMO_WIDGETS_SLIDESHOW  1
+
+/*Demonstrate the usage of encoder and keyboard*/
+#define LV_USE_DEMO_KEYPAD_AND_ENCODER     0
+
+/*Benchmark your system*/
+#define LV_USE_DEMO_BENCHMARK   0
+
+/*Stress test for LVGL*/
+#define LV_USE_DEMO_STRESS      0
+
+/*Music player demo*/
+#define LV_USE_DEMO_MUSIC          1
+#define LV_DEMO_MUSIC_SQUARE       0
+#define LV_DEMO_MUSIC_LANDSCAPE    0
+#define LV_DEMO_MUSIC_ROUND        0
+#define LV_DEMO_MUSIC_LARGE        0
+#define LV_DEMO_MUSIC_AUTO_PLAY    0
+
+#define LV_USE_SJPG 1
+#define LV_USE_GIF  1
+#define LV_USE_BMP  1
+#define LV_USE_PNG  1
+
+#define LV_GIF_CACHE  1
+
+#define LV_USE_FS_STDIO 1
+#if LV_USE_FS_STDIO
+    #define LV_FS_STDIO_LETTER 'S'     /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/
+    #define LV_FS_STDIO_PATH ""         /*Set the working directory. File/directory paths will be appended to it.*/
+    #define LV_FS_STDIO_CACHE_SIZE  0   /*>0 to cache this number of bytes in lv_fs_read()*/
+#endif
+/*--END OF LV_CONF_H--*/
+
+#endif /*LV_CONF_H*/
+
+#endif /*End of "Content enable"*/
-- 
2.7.4