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LVGL 在 GRUB2 上的移植

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wintoflash
发布时间: 2022-9-21 13:38

正文摘要:

本帖最后由 wintoflash 于 2022-10-1 13:39 编辑 效果测试： 1. 前言 LVGL 是一个适用于嵌入式设备的轻量级通用型图形库。 它使用纯 C 语言编写，无任何依赖，支持鼠标/键盘/触摸板等输入设备，支持 U ...

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财源茂盛 发表于 2024-6-23 15:02:42
提示: 作者被禁止或删除 内容自动屏蔽
财源茂盛 发表于 2024-6-23 13:24:50
提示: 作者被禁止或删除 内容自动屏蔽
财源茂盛 发表于 2024-6-23 13:24:33
提示: 作者被禁止或删除 内容自动屏蔽
myes001 发表于 2024-5-22 23:49:49
确实厉害，到哪一步了？
zash 发表于 2022-10-1 17:58:48
不明觉厉
wintoflash 发表于 2022-10-1 09:50:20
---占楼结束---
wintoflash 发表于 2022-10-1 09:08:47
---未完成---
11. lvgl 接管 grub2 gfxmenu
12. 实现鼠标支持
wintoflash 发表于 2022-10-1 09:07:32
---未完成---
10. 用lvgl实现grub2 boot_menu 和 terminal_box 组件
wintoflash 发表于 2022-9-21 13:52:27
本帖最后由 wintoflash 于 2022-10-1 13:37 编辑

4. 导入 LVGL 源码
在 grub-core 下建立 lvgl 文件夹
将 LVGL 源码目录下的 src 目录复制到 grub-core/lvgl/
将 LVGL 源码目录下的 lvgl.h 复制到 grub-core/lvgl/lvgl.h
创建文件夹 grub-core/lvgl/port
将 LVGL 源码目录下的 lv_conf_template.h 复制到 grub-core/lvgl/port/lv_conf.h
创建文件 grub-core/lvgl/port/module.c
  1. #include <grub/dl.h>
  2. GRUB_MOD_LICENSE ("GPLv3+");
复制代码

修改 conf/Makefile.common，添加
  1. CFLAGS_LVGL = -Wno-discarded-qualifiers -Wno-redundant-decls -Wno-nested-externs -Wno-suggest-attribute=format -Wno-shadow -Wno-incompatible-pointer-types $(CFLAGS_POSIX)
  2. CPPFLAGS_LVGL = -I$(top_builddir)/grub-core/lvgl/port -DLV_CONF_INCLUDE_SIMPLE $(CPPFLAGS_POSIX)

  4. CFLAGS_LVGLAPP = $(CFLAGS_POSIX)
  5. CPPFLAGS_LVGLAPP = $(CPPFLAGS_LVGL) -I$(top_builddir)/grub-core/lvgl
复制代码

修改 grub-core/Makefile.core.def，添加
  1. module = {
  2.   name = lvgl;
  3.   common = lvgl/port/module.c;

  5.   common = lvgl/src/core/lv_disp.c;
  6.   common = lvgl/src/core/lv_group.c;
  7.   common = lvgl/src/core/lv_indev.c;
  8.   common = lvgl/src/core/lv_indev_scroll.c;
  9.   common = lvgl/src/core/lv_obj.c;
  10.   common = lvgl/src/core/lv_obj_class.c;
  11.   common = lvgl/src/core/lv_obj_draw.c;
  12.   common = lvgl/src/core/lv_obj_pos.c;
  13.   common = lvgl/src/core/lv_obj_scroll.c;
  14.   common = lvgl/src/core/lv_obj_style.c;
  15.   common = lvgl/src/core/lv_obj_style_gen.c;
  16.   common = lvgl/src/core/lv_obj_tree.c;
  17.   common = lvgl/src/core/lv_event.c;
  18.   common = lvgl/src/core/lv_refr.c;
  19.   common = lvgl/src/core/lv_theme.c;

  21.   common = lvgl/src/draw/lv_draw_arc.c;
  22.   common = lvgl/src/draw/lv_draw.c;
  23.   common = lvgl/src/draw/lv_draw_img.c;
  24.   common = lvgl/src/draw/lv_draw_label.c;
  25.   common = lvgl/src/draw/lv_draw_line.c;
  26.   common = lvgl/src/draw/lv_draw_mask.c;
  27.   common = lvgl/src/draw/lv_draw_rect.c;
  28.   common = lvgl/src/draw/lv_draw_transform.c;
  29.   common = lvgl/src/draw/lv_draw_layer.c;
  30.   common = lvgl/src/draw/lv_draw_triangle.c;
  31.   common = lvgl/src/draw/lv_img_buf.c;
  32.   common = lvgl/src/draw/lv_img_cache.c;
  33.   common = lvgl/src/draw/lv_img_decoder.c;
  34.   common = lvgl/src/draw/sw/lv_draw_sw.c;
  35.   common = lvgl/src/draw/sw/lv_draw_sw_arc.c;
  36.   common = lvgl/src/draw/sw/lv_draw_sw_blend.c;
  37.   common = lvgl/src/draw/sw/lv_draw_sw_dither.c;
  38.   common = lvgl/src/draw/sw/lv_draw_sw_gradient.c;
  39.   common = lvgl/src/draw/sw/lv_draw_sw_img.c;
  40.   common = lvgl/src/draw/sw/lv_draw_sw_letter.c;
  41.   common = lvgl/src/draw/sw/lv_draw_sw_line.c;
  42.   common = lvgl/src/draw/sw/lv_draw_sw_polygon.c;
  43.   common = lvgl/src/draw/sw/lv_draw_sw_rect.c;
  44.   common = lvgl/src/draw/sw/lv_draw_sw_transform.c;
  45.   common = lvgl/src/draw/sw/lv_draw_sw_layer.c;

  47.   common = lvgl/src/font/lv_font.c;
  48.   common = lvgl/src/font/lv_font_fmt_txt.c;
  49.   common = lvgl/src/font/lv_font_loader.c;
  50.   common = lvgl/src/font/lv_font_dejavu_16_persian_hebrew.c;
  51.   common = lvgl/src/font/lv_font_montserrat_8.c;
  52.   common = lvgl/src/font/lv_font_montserrat_10.c;
  53.   common = lvgl/src/font/lv_font_montserrat_12.c;
  54.   common = lvgl/src/font/lv_font_montserrat_12_subpx.c;
  55.   common = lvgl/src/font/lv_font_montserrat_14.c;
  56.   common = lvgl/src/font/lv_font_montserrat_16.c;
  57.   common = lvgl/src/font/lv_font_montserrat_18.c;
  58.   common = lvgl/src/font/lv_font_montserrat_20.c;
  59.   common = lvgl/src/font/lv_font_montserrat_22.c;
  60.   common = lvgl/src/font/lv_font_montserrat_24.c;
  61.   common = lvgl/src/font/lv_font_montserrat_26.c;
  62.   common = lvgl/src/font/lv_font_montserrat_28.c;
  63.   common = lvgl/src/font/lv_font_montserrat_28_compressed.c;
  64.   common = lvgl/src/font/lv_font_montserrat_30.c;
  65.   common = lvgl/src/font/lv_font_montserrat_32.c;
  66.   common = lvgl/src/font/lv_font_montserrat_34.c;
  67.   common = lvgl/src/font/lv_font_montserrat_36.c;
  68.   common = lvgl/src/font/lv_font_montserrat_38.c;
  69.   common = lvgl/src/font/lv_font_montserrat_40.c;
  70.   common = lvgl/src/font/lv_font_montserrat_42.c;
  71.   common = lvgl/src/font/lv_font_montserrat_44.c;
  72.   common = lvgl/src/font/lv_font_montserrat_46.c;
  73.   common = lvgl/src/font/lv_font_montserrat_48.c;
  74.   common = lvgl/src/font/lv_font_simsun_16_cjk.c;
  75.   common = lvgl/src/font/lv_font_unscii_8.c;
  76.   common = lvgl/src/font/lv_font_unscii_16.c;

  78.   common = lvgl/src/hal/lv_hal_disp.c;
  79.   common = lvgl/src/hal/lv_hal_indev.c;
  80.   common = lvgl/src/hal/lv_hal_tick.c;

  82.   common = lvgl/src/misc/lv_anim.c;
  83.   common = lvgl/src/misc/lv_anim_timeline.c;
  84.   common = lvgl/src/misc/lv_area.c;
  85.   common = lvgl/src/misc/lv_async.c;
  86.   common = lvgl/src/misc/lv_bidi.c;
  87.   common = lvgl/src/misc/lv_color.c;
  88.   common = lvgl/src/misc/lv_fs.c;
  89.   common = lvgl/src/misc/lv_gc.c;
  90.   common = lvgl/src/misc/lv_ll.c;
  91.   common = lvgl/src/misc/lv_log.c;
  92.   common = lvgl/src/misc/lv_lru.c;
  93.   common = lvgl/src/misc/lv_math.c;
  94.   common = lvgl/src/misc/lv_mem.c;
  95.   common = lvgl/src/misc/lv_printf.c;
  96.   common = lvgl/src/misc/lv_style.c;
  97.   common = lvgl/src/misc/lv_style_gen.c;
  98.   common = lvgl/src/misc/lv_timer.c;
  99.   common = lvgl/src/misc/lv_tlsf.c;
  100.   common = lvgl/src/misc/lv_txt.c;
  101.   common = lvgl/src/misc/lv_txt_ap.c;
  102.   common = lvgl/src/misc/lv_utils.c;

  104.   common = lvgl/src/widgets/lv_arc.c;
  105.   common = lvgl/src/widgets/lv_bar.c;
  106.   common = lvgl/src/widgets/lv_btn.c;
  107.   common = lvgl/src/widgets/lv_btnmatrix.c;
  108.   common = lvgl/src/widgets/lv_canvas.c;
  109.   common = lvgl/src/widgets/lv_checkbox.c;
  110.   common = lvgl/src/widgets/lv_dropdown.c;
  111.   common = lvgl/src/widgets/lv_img.c;
  112.   common = lvgl/src/widgets/lv_label.c;
  113.   common = lvgl/src/widgets/lv_line.c;
  114.   common = lvgl/src/widgets/lv_roller.c;
  115.   common = lvgl/src/widgets/lv_slider.c;
  116.   common = lvgl/src/widgets/lv_switch.c;
  117.   common = lvgl/src/widgets/lv_table.c;
  118.   common = lvgl/src/widgets/lv_textarea.c;

  120.   common = lvgl/src/extra/lv_extra.c;

  122.   common = lvgl/src/extra/layouts/flex/lv_flex.c;
  123.   common = lvgl/src/extra/layouts/grid/lv_grid.c;

  125.   common = lvgl/src/extra/libs/bmp/lv_bmp.c;
  126.   common = lvgl/src/extra/libs/gif/gifdec.c;
  127.   common = lvgl/src/extra/libs/gif/lv_gif.c;
  128.   common = lvgl/src/extra/libs/png/lodepng.c;
  129.   common = lvgl/src/extra/libs/png/lv_png.c;
  130.   common = lvgl/src/extra/libs/sjpg/lv_sjpg.c;
  131.   common = lvgl/src/extra/libs/sjpg/tjpgd.c;

  133.   common = lvgl/src/extra/others/fragment/lv_fragment_manager.c;
  134.   common = lvgl/src/extra/others/fragment/lv_fragment.c;
  135.   common = lvgl/src/extra/others/gridnav/lv_gridnav.c;
  136.   common = lvgl/src/extra/others/ime/lv_ime_pinyin.c;
  137.   common = lvgl/src/extra/others/imgfont/lv_imgfont.c;
  138.   common = lvgl/src/extra/others/monkey/lv_monkey.c;
  139.   common = lvgl/src/extra/others/msg/lv_msg.c;
  140.   common = lvgl/src/extra/others/snapshot/lv_snapshot.c;

  142.   common = lvgl/src/extra/themes/basic/lv_theme_basic.c;
  143.   common = lvgl/src/extra/themes/default/lv_theme_default.c;
  144.   common = lvgl/src/extra/themes/mono/lv_theme_mono.c;

  146.   common = lvgl/src/extra/widgets/animimg/lv_animimg.c;
  147.   common = lvgl/src/extra/widgets/calendar/lv_calendar_header_arrow.c;
  148.   common = lvgl/src/extra/widgets/calendar/lv_calendar_header_dropdown.c;
  149.   common = lvgl/src/extra/widgets/calendar/lv_calendar.c;
  150.   common = lvgl/src/extra/widgets/chart/lv_chart.c;
  151.   common = lvgl/src/extra/widgets/colorwheel/lv_colorwheel.c;
  152.   common = lvgl/src/extra/widgets/imgbtn/lv_imgbtn.c;
  153.   common = lvgl/src/extra/widgets/keyboard/lv_keyboard.c;
  154.   common = lvgl/src/extra/widgets/led/lv_led.c;
  155.   common = lvgl/src/extra/widgets/list/lv_list.c;
  156.   common = lvgl/src/extra/widgets/menu/lv_menu.c;
  157.   common = lvgl/src/extra/widgets/meter/lv_meter.c;
  158.   common = lvgl/src/extra/widgets/msgbox/lv_msgbox.c;
  159.   common = lvgl/src/extra/widgets/span/lv_span.c;
  160.   common = lvgl/src/extra/widgets/spinbox/lv_spinbox.c;
  161.   common = lvgl/src/extra/widgets/spinner/lv_spinner.c;
  162.   common = lvgl/src/extra/widgets/tabview/lv_tabview.c;
  163.   common = lvgl/src/extra/widgets/tileview/lv_tileview.c;
  164.   common = lvgl/src/extra/widgets/win/lv_win.c;

  166.   cflags = '$(CFLAGS_LVGL)';
  167.   cppflags = '$(CPPFLAGS_LVGL)';
  168. };
复制代码

编辑 grub-core/lvgl/port/lv_conf.h，参考编译配置：
  1. /**
  2. * @file lv_conf.h
  3. * Configuration file for v8.3.1
  4. */

  6. /*
  7. * Copy this file as `lv_conf.h`
  8. * 1. simply next to the `lvgl` folder
  9. * 2. or any other places and
  10. *    - define `LV_CONF_INCLUDE_SIMPLE`
  11. *    - add the path as include path
  12. */

  14. /* clang-format off */
  15. #if 1 /*Set it to "1" to enable content*/

  17. #ifndef LV_CONF_H
  18. #define LV_CONF_H

  20. #include <stdint.h>

  22. /*====================
  23.    COLOR SETTINGS
  24. *====================*/

  26. /*Color depth: 1 (1 byte per pixel), 8 (RGB332), 16 (RGB565), 32 (ARGB8888)*/
  27. #define LV_COLOR_DEPTH 32

  29. /*Swap the 2 bytes of RGB565 color. Useful if the display has an 8-bit interface (e.g. SPI)*/
  30. #define LV_COLOR_16_SWAP 0

  32. /*Enable features to draw on transparent background.
  33. *It's required if opa, and transform_* style properties are used.
  34. *Can be also used if the UI is above another layer, e.g. an OSD menu or video player.*/
  35. #define LV_COLOR_SCREEN_TRANSP 1

  37. /* Adjust color mix functions rounding. GPUs might calculate color mix (blending) differently.
  38. * 0: round down, 64: round up from x.75, 128: round up from half, 192: round up from x.25, 254: round up */
  39. #define LV_COLOR_MIX_ROUND_OFS 0

  41. /*Images pixels with this color will not be drawn if they are chroma keyed)*/
  42. #define LV_COLOR_CHROMA_KEY lv_color_hex(0x00ff00)         /*pure green*/

  44. /*=========================
  45.    MEMORY SETTINGS
  46. *=========================*/

  48. /*1: use custom malloc/free, 0: use the built-in `lv_mem_alloc()` and `lv_mem_free()`*/
  49. #define LV_MEM_CUSTOM 1
  50. #if LV_MEM_CUSTOM == 0
  51.     /*Size of the memory available for `lv_mem_alloc()` in bytes (>= 2kB)*/
  52.     #define LV_MEM_SIZE (48U * 1024U)          /*[bytes]*/

  54.     /*Set an address for the memory pool instead of allocating it as a normal array. Can be in external SRAM too.*/
  55.     #define LV_MEM_ADR 0     /*0: unused*/
  56.     /*Instead of an address give a memory allocator that will be called to get a memory pool for LVGL. E.g. my_malloc*/
  57.     #if LV_MEM_ADR == 0
  58.         #undef LV_MEM_POOL_INCLUDE
  59.         #undef LV_MEM_POOL_ALLOC
  60.     #endif

  62. #else       /*LV_MEM_CUSTOM*/
  63.     #define LV_MEM_CUSTOM_INCLUDE <stdlib.h>   /*Header for the dynamic memory function*/
  64.     #define LV_MEM_CUSTOM_ALLOC   malloc
  65.     #define LV_MEM_CUSTOM_FREE    free
  66.     #define LV_MEM_CUSTOM_REALLOC realloc
  67. #endif     /*LV_MEM_CUSTOM*/

  69. /*Number of the intermediate memory buffer used during rendering and other internal processing mechanisms.
  70. *You will see an error log message if there wasn't enough buffers. */
  71. #define LV_MEM_BUF_MAX_NUM 16

  73. /*Use the standard `memcpy` and `memset` instead of LVGL's own functions. (Might or might not be faster).*/
  74. #define LV_MEMCPY_MEMSET_STD 1

  76. /*====================
  77.    HAL SETTINGS
  78. *====================*/

  80. /*Default display refresh period. LVG will redraw changed areas with this period time*/
  81. #define LV_DISP_DEF_REFR_PERIOD 30      /*[ms]*/

  83. /*Input device read period in milliseconds*/
  84. #define LV_INDEV_DEF_READ_PERIOD 30     /*[ms]*/

  86. /*Use a custom tick source that tells the elapsed time in milliseconds.
  87. *It removes the need to manually update the tick with `lv_tick_inc()`)*/
  88. #define LV_TICK_CUSTOM 0
  89. #if LV_TICK_CUSTOM
  90.     #define LV_TICK_CUSTOM_INCLUDE "Arduino.h"         /*Header for the system time function*/
  91.     #define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis())    /*Expression evaluating to current system time in ms*/
  92. #endif   /*LV_TICK_CUSTOM*/

  94. /*Default Dot Per Inch. Used to initialize default sizes such as widgets sized, style paddings.
  95. *(Not so important, you can adjust it to modify default sizes and spaces)*/
  96. #define LV_DPI_DEF 130     /*[px/inch]*/

  98. /*=======================
  99. * FEATURE CONFIGURATION
  100. *=======================*/

  102. /*-------------
  103. * Drawing
  104. *-----------*/

  106. /*Enable complex draw engine.
  107. *Required to draw shadow, gradient, rounded corners, circles, arc, skew lines, image transformations or any masks*/
  108. #define LV_DRAW_COMPLEX 1
  109. #if LV_DRAW_COMPLEX != 0

  111.     /*Allow buffering some shadow calculation.
  112.     *LV_SHADOW_CACHE_SIZE is the max. shadow size to buffer, where shadow size is `shadow_width + radius`
  113.     *Caching has LV_SHADOW_CACHE_SIZE^2 RAM cost*/
  114.     #define LV_SHADOW_CACHE_SIZE 0

  116.     /* Set number of maximally cached circle data.
  117.     * The circumference of 1/4 circle are saved for anti-aliasing
  118.     * radius * 4 bytes are used per circle (the most often used radiuses are saved)
  119.     * 0: to disable caching */
  120.     #define LV_CIRCLE_CACHE_SIZE 4
  121. #endif /*LV_DRAW_COMPLEX*/

  123. /**
  124. * "Simple layers" are used when a widget has `style_opa < 255` to buffer the widget into a layer
  125. * and blend it as an image with the given opacity.
  126. * Note that `bg_opa`, `text_opa` etc don't require buffering into layer)
  127. * The widget can be buffered in smaller chunks to avoid using large buffers.
  128. *
  129. * - LV_LAYER_SIMPLE_BUF_SIZE: [bytes] the optimal target buffer size. LVGL will try to allocate it
  130. * - LV_LAYER_SIMPLE_FALLBACK_BUF_SIZE: [bytes]  used if `LV_LAYER_SIMPLE_BUF_SIZE` couldn't be allocated.
  131. *
  132. * Both buffer sizes are in bytes.
  133. * "Transformed layers" (where transform_angle/zoom properties are used) use larger buffers
  134. * and can't be drawn in chunks. So these settings affects only widgets with opacity.
  135. */
  136. #define LV_LAYER_SIMPLE_BUF_SIZE          (24 * 1024)
  137. #define LV_LAYER_SIMPLE_FALLBACK_BUF_SIZE (3 * 1024)

  139. /*Default image cache size. Image caching keeps the images opened.
  140. *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)
  141. *With complex image decoders (e.g. PNG or JPG) caching can save the continuous open/decode of images.
  142. *However the opened images might consume additional RAM.
  143. *0: to disable caching*/
  144. #define LV_IMG_CACHE_DEF_SIZE 1

  146. /*Number of stops allowed per gradient. Increase this to allow more stops.
  147. *This adds (sizeof(lv_color_t) + 1) bytes per additional stop*/
  148. #define LV_GRADIENT_MAX_STOPS 2

  150. /*Default gradient buffer size.
  151. *When LVGL calculates the gradient "maps" it can save them into a cache to avoid calculating them again.
  152. *LV_GRAD_CACHE_DEF_SIZE sets the size of this cache in bytes.
  153. *If the cache is too small the map will be allocated only while it's required for the drawing.
  154. *0 mean no caching.*/
  155. #define LV_GRAD_CACHE_DEF_SIZE 4096

  157. /*Allow dithering the gradients (to achieve visual smooth color gradients on limited color depth display)
  158. *LV_DITHER_GRADIENT implies allocating one or two more lines of the object's rendering surface
  159. *The increase in memory consumption is (32 bits * object width) plus 24 bits * object width if using error diffusion */
  160. #define LV_DITHER_GRADIENT 1
  161. #if LV_DITHER_GRADIENT
  162.     /*Add support for error diffusion dithering.
  163.      *Error diffusion dithering gets a much better visual result, but implies more CPU consumption and memory when drawing.
  164.      *The increase in memory consumption is (24 bits * object's width)*/
  165.     #define LV_DITHER_ERROR_DIFFUSION 1
  166. #endif

  168. /*Maximum buffer size to allocate for rotation.
  169. *Only used if software rotation is enabled in the display driver.*/
  170. #define LV_DISP_ROT_MAX_BUF (10*1024)

  172. /*-------------
  173. * GPU
  174. *-----------*/

  176. /*Use Arm's 2D acceleration library Arm-2D */
  177. #define LV_USE_GPU_ARM2D 0

  179. /*Use STM32's DMA2D (aka Chrom Art) GPU*/
  180. #define LV_USE_GPU_STM32_DMA2D 0
  181. #if LV_USE_GPU_STM32_DMA2D
  182.     /*Must be defined to include path of CMSIS header of target processor
  183.     e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
  184.     #define LV_GPU_DMA2D_CMSIS_INCLUDE
  185. #endif

  187. /*Use SWM341's DMA2D GPU*/
  188. #define LV_USE_GPU_SWM341_DMA2D 0
  189. #if LV_USE_GPU_SWM341_DMA2D
  190.     #define LV_GPU_SWM341_DMA2D_INCLUDE "SWM341.h"
  191. #endif

  193. /*Use NXP's PXP GPU iMX RTxxx platforms*/
  194. #define LV_USE_GPU_NXP_PXP 0
  195. #if LV_USE_GPU_NXP_PXP
  196.     /*1: Add default bare metal and FreeRTOS interrupt handling routines for PXP (lv_gpu_nxp_pxp_osa.c)
  197.     *   and call lv_gpu_nxp_pxp_init() automatically during lv_init(). Note that symbol SDK_OS_FREE_RTOS
  198.     *   has to be defined in order to use FreeRTOS OSA, otherwise bare-metal implementation is selected.
  199.     *0: lv_gpu_nxp_pxp_init() has to be called manually before lv_init()
  200.     */
  201.     #define LV_USE_GPU_NXP_PXP_AUTO_INIT 0
  202. #endif

  204. /*Use NXP's VG-Lite GPU iMX RTxxx platforms*/
  205. #define LV_USE_GPU_NXP_VG_LITE 0

  207. /*Use SDL renderer API*/
  208. #define LV_USE_GPU_SDL 0
  209. #if LV_USE_GPU_SDL
  210.     #define LV_GPU_SDL_INCLUDE_PATH <SDL2/SDL.h>
  211.     /*Texture cache size, 8MB by default*/
  212.     #define LV_GPU_SDL_LRU_SIZE (1024 * 1024 * 8)
  213.     /*Custom blend mode for mask drawing, disable if you need to link with older SDL2 lib*/
  214.     #define LV_GPU_SDL_CUSTOM_BLEND_MODE (SDL_VERSION_ATLEAST(2, 0, 6))
  215. #endif

  217. /*-------------
  218. * Logging
  219. *-----------*/

  221. /*Enable the log module*/
  222. #define LV_USE_LOG 0
  223. #if LV_USE_LOG

  225.     /*How important log should be added:
  226.     *LV_LOG_LEVEL_TRACE       A lot of logs to give detailed information
  227.     *LV_LOG_LEVEL_INFO        Log important events
  228.     *LV_LOG_LEVEL_WARN        Log if something unwanted happened but didn't cause a problem
  229.     *LV_LOG_LEVEL_ERROR       Only critical issue, when the system may fail
  230.     *LV_LOG_LEVEL_USER        Only logs added by the user
  231.     *LV_LOG_LEVEL_NONE        Do not log anything*/
  232.     #define LV_LOG_LEVEL LV_LOG_LEVEL_WARN

  234.     /*1: Print the log with 'printf';
  235.     *0: User need to register a callback with `lv_log_register_print_cb()`*/
  236.     #define LV_LOG_PRINTF 0

  238.     /*Enable/disable LV_LOG_TRACE in modules that produces a huge number of logs*/
  239.     #define LV_LOG_TRACE_MEM        1
  240.     #define LV_LOG_TRACE_TIMER      1
  241.     #define LV_LOG_TRACE_INDEV      1
  242.     #define LV_LOG_TRACE_DISP_REFR  1
  243.     #define LV_LOG_TRACE_EVENT      1
  244.     #define LV_LOG_TRACE_OBJ_CREATE 1
  245.     #define LV_LOG_TRACE_LAYOUT     1
  246.     #define LV_LOG_TRACE_ANIM       1

  248. #endif  /*LV_USE_LOG*/

  250. /*-------------
  251. * Asserts
  252. *-----------*/

  254. /*Enable asserts if an operation is failed or an invalid data is found.
  255. *If LV_USE_LOG is enabled an error message will be printed on failure*/
  256. #define LV_USE_ASSERT_NULL          1   /*Check if the parameter is NULL. (Very fast, recommended)*/
  257. #define LV_USE_ASSERT_MALLOC        1   /*Checks is the memory is successfully allocated or no. (Very fast, recommended)*/
  258. #define LV_USE_ASSERT_STYLE         1   /*Check if the styles are properly initialized. (Very fast, recommended)*/
  259. #define LV_USE_ASSERT_MEM_INTEGRITY 0   /*Check the integrity of `lv_mem` after critical operations. (Slow)*/
  260. #define LV_USE_ASSERT_OBJ           0   /*Check the object's type and existence (e.g. not deleted). (Slow)*/

  262. /*Add a custom handler when assert happens e.g. to restart the MCU*/
  263. #define LV_ASSERT_HANDLER_INCLUDE <stdint.h>
  264. #define LV_ASSERT_HANDLER while(1);   /*Halt by default*/

  266. /*-------------
  267. * Others
  268. *-----------*/

  270. /*1: Show CPU usage and FPS count*/
  271. #define LV_USE_PERF_MONITOR 0
  272. #if LV_USE_PERF_MONITOR
  273.     #define LV_USE_PERF_MONITOR_POS LV_ALIGN_BOTTOM_RIGHT
  274. #endif

  276. /*1: Show the used memory and the memory fragmentation
  277. * Requires LV_MEM_CUSTOM = 0*/
  278. #define LV_USE_MEM_MONITOR 0
  279. #if LV_USE_MEM_MONITOR
  280.     #define LV_USE_MEM_MONITOR_POS LV_ALIGN_BOTTOM_LEFT
  281. #endif

  283. /*1: Draw random colored rectangles over the redrawn areas*/
  284. #define LV_USE_REFR_DEBUG 0

  286. /*Change the built in (v)snprintf functions*/
  287. #define LV_SPRINTF_CUSTOM 0
  288. #if LV_SPRINTF_CUSTOM
  289.     #define LV_SPRINTF_INCLUDE <stdio.h>
  290.     #define lv_snprintf  snprintf
  291.     #define lv_vsnprintf vsnprintf
  292. #else   /*LV_SPRINTF_CUSTOM*/
  293.     #define LV_SPRINTF_USE_FLOAT 0
  294. #endif  /*LV_SPRINTF_CUSTOM*/

  296. #define LV_USE_USER_DATA 1

  298. /*Garbage Collector settings
  299. *Used if lvgl is bound to higher level language and the memory is managed by that language*/
  300. #define LV_ENABLE_GC 0
  301. #if LV_ENABLE_GC != 0
  302.     #define LV_GC_INCLUDE "gc.h"                           /*Include Garbage Collector related things*/
  303. #endif /*LV_ENABLE_GC*/

  305. /*=====================
  306. *  COMPILER SETTINGS
  307. *====================*/

  309. /*For big endian systems set to 1*/
  310. #ifdef GRUB_CPU_WORDS_BIGENDIAN
  311. #define LV_BIG_ENDIAN_SYSTEM 1
  312. #else
  313. #define LV_BIG_ENDIAN_SYSTEM 0
  314. #endif

  316. /*Define a custom attribute to `lv_tick_inc` function*/
  317. #define LV_ATTRIBUTE_TICK_INC

  319. /*Define a custom attribute to `lv_timer_handler` function*/
  320. #define LV_ATTRIBUTE_TIMER_HANDLER

  322. /*Define a custom attribute to `lv_disp_flush_ready` function*/
  323. #define LV_ATTRIBUTE_FLUSH_READY

  325. /*Required alignment size for buffers*/
  326. #define LV_ATTRIBUTE_MEM_ALIGN_SIZE 1

  328. /*Will be added where memories needs to be aligned (with -Os data might not be aligned to boundary by default).
  329. * E.g. __attribute__((aligned(4)))*/
  330. #define LV_ATTRIBUTE_MEM_ALIGN

  332. /*Attribute to mark large constant arrays for example font's bitmaps*/
  333. #define LV_ATTRIBUTE_LARGE_CONST

  335. /*Compiler prefix for a big array declaration in RAM*/
  336. #define LV_ATTRIBUTE_LARGE_RAM_ARRAY

  338. /*Place performance critical functions into a faster memory (e.g RAM)*/
  339. #define LV_ATTRIBUTE_FAST_MEM

  341. /*Prefix variables that are used in GPU accelerated operations, often these need to be placed in RAM sections that are DMA accessible*/
  342. #define LV_ATTRIBUTE_DMA

  344. /*Export integer constant to binding. This macro is used with constants in the form of LV_<CONST> that
  345. *should also appear on LVGL binding API such as Micropython.*/
  346. #define LV_EXPORT_CONST_INT(int_value) struct _silence_gcc_warning /*The default value just prevents GCC warning*/

  348. /*Extend the default -32k..32k coordinate range to -4M..4M by using int32_t for coordinates instead of int16_t*/
  349. #define LV_USE_LARGE_COORD 0

  351. /*==================
  352. *   FONT USAGE
  353. *===================*/

  355. /*Montserrat fonts with ASCII range and some symbols using bpp = 4
  356. *https://fonts.google.com/specimen/Montserrat*/
  357. #define LV_FONT_MONTSERRAT_8  1
  358. #define LV_FONT_MONTSERRAT_10 0
  359. #define LV_FONT_MONTSERRAT_12 1
  360. #define LV_FONT_MONTSERRAT_14 1
  361. #define LV_FONT_MONTSERRAT_16 1
  362. #define LV_FONT_MONTSERRAT_18 1
  363. #define LV_FONT_MONTSERRAT_20 0
  364. #define LV_FONT_MONTSERRAT_22 0
  365. #define LV_FONT_MONTSERRAT_24 1
  366. #define LV_FONT_MONTSERRAT_26 0
  367. #define LV_FONT_MONTSERRAT_28 1
  368. #define LV_FONT_MONTSERRAT_30 0
  369. #define LV_FONT_MONTSERRAT_32 1
  370. #define LV_FONT_MONTSERRAT_34 0
  371. #define LV_FONT_MONTSERRAT_36 1
  372. #define LV_FONT_MONTSERRAT_38 0
  373. #define LV_FONT_MONTSERRAT_40 0
  374. #define LV_FONT_MONTSERRAT_42 0
  375. #define LV_FONT_MONTSERRAT_44 0
  376. #define LV_FONT_MONTSERRAT_46 0
  377. #define LV_FONT_MONTSERRAT_48 1

  379. /*Demonstrate special features*/
  380. #define LV_FONT_MONTSERRAT_12_SUBPX      1
  381. #define LV_FONT_MONTSERRAT_28_COMPRESSED 1  /*bpp = 3*/
  382. #define LV_FONT_DEJAVU_16_PERSIAN_HEBREW 1  /*Hebrew, Arabic, Persian letters and all their forms*/
  383. #define LV_FONT_SIMSUN_16_CJK            1  /*1000 most common CJK radicals*/

  385. /*Pixel perfect monospace fonts*/
  386. #define LV_FONT_UNSCII_8  1
  387. #define LV_FONT_UNSCII_16 1

  389. /*Optionally declare custom fonts here.
  390. *You can use these fonts as default font too and they will be available globally.
  391. *E.g. #define LV_FONT_CUSTOM_DECLARE   LV_FONT_DECLARE(my_font_1) LV_FONT_DECLARE(my_font_2)*/
  392. #define LV_FONT_CUSTOM_DECLARE

  394. /*Always set a default font*/
  395. #define LV_FONT_DEFAULT &lv_font_montserrat_16

  397. /*Enable handling large font and/or fonts with a lot of characters.
  398. *The limit depends on the font size, font face and bpp.
  399. *Compiler error will be triggered if a font needs it.*/
  400. #define LV_FONT_FMT_TXT_LARGE 1

  402. /*Enables/disables support for compressed fonts.*/
  403. #define LV_USE_FONT_COMPRESSED 1

  405. /*Enable subpixel rendering*/
  406. #define LV_USE_FONT_SUBPX 0
  407. #if LV_USE_FONT_SUBPX
  408.     /*Set the pixel order of the display. Physical order of RGB channels. Doesn't matter with "normal" fonts.*/
  409.     #define LV_FONT_SUBPX_BGR 0  /*0: RGB; 1:BGR order*/
  410. #endif

  412. /*Enable drawing placeholders when glyph dsc is not found*/
  413. #define LV_USE_FONT_PLACEHOLDER 1

  415. /*=================
  416. *  TEXT SETTINGS
  417. *=================*/

  419. /**
  420. * Select a character encoding for strings.
  421. * Your IDE or editor should have the same character encoding
  422. * - LV_TXT_ENC_UTF8
  423. * - LV_TXT_ENC_ASCII
  424. */
  425. #define LV_TXT_ENC LV_TXT_ENC_UTF8

  427. /*Can break (wrap) texts on these chars*/
  428. #define LV_TXT_BREAK_CHARS " ,.;:-_"

  430. /*If a word is at least this long, will break wherever "prettiest"
  431. *To disable, set to a value <= 0*/
  432. #define LV_TXT_LINE_BREAK_LONG_LEN 0

  434. /*Minimum number of characters in a long word to put on a line before a break.
  435. *Depends on LV_TXT_LINE_BREAK_LONG_LEN.*/
  436. #define LV_TXT_LINE_BREAK_LONG_PRE_MIN_LEN 3

  438. /*Minimum number of characters in a long word to put on a line after a break.
  439. *Depends on LV_TXT_LINE_BREAK_LONG_LEN.*/
  440. #define LV_TXT_LINE_BREAK_LONG_POST_MIN_LEN 3

  442. /*The control character to use for signalling text recoloring.*/
  443. #define LV_TXT_COLOR_CMD "#"

  445. /*Support bidirectional texts. Allows mixing Left-to-Right and Right-to-Left texts.
  446. *The direction will be processed according to the Unicode Bidirectional Algorithm:
  447. *https://www.w3.org/International/articles/inline-bidi-markup/uba-basics*/
  448. #define LV_USE_BIDI 1
  449. #if LV_USE_BIDI
  450.     /*Set the default direction. Supported values:
  451.     *`LV_BASE_DIR_LTR` Left-to-Right
  452.     *`LV_BASE_DIR_RTL` Right-to-Left
  453.     *`LV_BASE_DIR_AUTO` detect texts base direction*/
  454.     #define LV_BIDI_BASE_DIR_DEF LV_BASE_DIR_AUTO
  455. #endif

  457. /*Enable Arabic/Persian processing
  458. *In these languages characters should be replaced with an other form based on their position in the text*/
  459. #define LV_USE_ARABIC_PERSIAN_CHARS 1

  461. /*==================
  462. *  WIDGET USAGE
  463. *================*/

  465. /*Documentation of the widgets: https://docs.lvgl.io/latest/en/html/widgets/index.html*/

  467. #define LV_USE_ARC        1

  469. #define LV_USE_BAR        1

  471. #define LV_USE_BTN        1

  473. #define LV_USE_BTNMATRIX  1

  475. #define LV_USE_CANVAS     1

  477. #define LV_USE_CHECKBOX   1

  479. #define LV_USE_DROPDOWN   1   /*Requires: lv_label*/

  481. #define LV_USE_IMG        1   /*Requires: lv_label*/

  483. #define LV_USE_LABEL      1
  484. #if LV_USE_LABEL
  485.     #define LV_LABEL_TEXT_SELECTION 1 /*Enable selecting text of the label*/
  486.     #define LV_LABEL_LONG_TXT_HINT 1  /*Store some extra info in labels to speed up drawing of very long texts*/
  487. #endif

  489. #define LV_USE_LINE       1

  491. #define LV_USE_ROLLER     1   /*Requires: lv_label*/
  492. #if LV_USE_ROLLER
  493.     #define LV_ROLLER_INF_PAGES 7 /*Number of extra "pages" when the roller is infinite*/
  494. #endif

  496. #define LV_USE_SLIDER     1   /*Requires: lv_bar*/

  498. #define LV_USE_SWITCH     1

  500. #define LV_USE_TEXTAREA   1   /*Requires: lv_label*/
  501. #if LV_USE_TEXTAREA != 0
  502.     #define LV_TEXTAREA_DEF_PWD_SHOW_TIME 1500    /*ms*/
  503. #endif

  505. #define LV_USE_TABLE      1

  507. /*==================
  508. * EXTRA COMPONENTS
  509. *==================*/

  511. /*-----------
  512. * Widgets
  513. *----------*/
  514. #define LV_USE_ANIMIMG    1

  516. #define LV_USE_CALENDAR   1
  517. #if LV_USE_CALENDAR
  518.     #define LV_CALENDAR_WEEK_STARTS_MONDAY 0
  519.     #if LV_CALENDAR_WEEK_STARTS_MONDAY
  520.         #define LV_CALENDAR_DEFAULT_DAY_NAMES {"Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"}
  521.     #else
  522.         #define LV_CALENDAR_DEFAULT_DAY_NAMES {"Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"}
  523.     #endif

  525.     #define LV_CALENDAR_DEFAULT_MONTH_NAMES {"January", "February", "March",  "April", "May",  "June", "July", "August", "September", "October", "November", "December"}
  526.     #define LV_USE_CALENDAR_HEADER_ARROW 1
  527.     #define LV_USE_CALENDAR_HEADER_DROPDOWN 1
  528. #endif  /*LV_USE_CALENDAR*/

  530. #define LV_USE_CHART      1

  532. #define LV_USE_COLORWHEEL 1

  534. #define LV_USE_IMGBTN     1

  536. #define LV_USE_KEYBOARD   1

  538. #define LV_USE_LED        1

  540. #define LV_USE_LIST       1

  542. #define LV_USE_MENU       1

  544. #define LV_USE_METER      1

  546. #define LV_USE_MSGBOX     1

  548. #define LV_USE_SPAN       1
  549. #if LV_USE_SPAN
  550.     /*A line text can contain maximum num of span descriptor */
  551.     #define LV_SPAN_SNIPPET_STACK_SIZE 64
  552. #endif

  554. #define LV_USE_SPINBOX    1

  556. #define LV_USE_SPINNER    1

  558. #define LV_USE_TABVIEW    1

  560. #define LV_USE_TILEVIEW   1

  562. #define LV_USE_WIN        1

  564. /*-----------
  565. * Themes
  566. *----------*/

  568. /*A simple, impressive and very complete theme*/
  569. #define LV_USE_THEME_DEFAULT 1
  570. #if LV_USE_THEME_DEFAULT

  572.     /*0: Light mode; 1: Dark mode*/
  573.     #define LV_THEME_DEFAULT_DARK 0

  575.     /*1: Enable grow on press*/
  576.     #define LV_THEME_DEFAULT_GROW 1

  578.     /*Default transition time in [ms]*/
  579.     #define LV_THEME_DEFAULT_TRANSITION_TIME 80
  580. #endif /*LV_USE_THEME_DEFAULT*/

  582. /*A very simple theme that is a good starting point for a custom theme*/
  583. #define LV_USE_THEME_BASIC 1

  585. /*A theme designed for monochrome displays*/
  586. #define LV_USE_THEME_MONO 1

  588. /*-----------
  589. * Layouts
  590. *----------*/

  592. /*A layout similar to Flexbox in CSS.*/
  593. #define LV_USE_FLEX 1

  595. /*A layout similar to Grid in CSS.*/
  596. #define LV_USE_GRID 1

  598. /*---------------------
  599. * 3rd party libraries
  600. *--------------------*/

  602. /*File system interfaces for common APIs */

  604. /*API for fopen, fread, etc*/
  605. #define LV_USE_FS_STDIO 0
  606. #if LV_USE_FS_STDIO
  607.     #define LV_FS_STDIO_LETTER '\0'     /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/
  608.     #define LV_FS_STDIO_PATH ""         /*Set the working directory. File/directory paths will be appended to it.*/
  609.     #define LV_FS_STDIO_CACHE_SIZE 0    /*>0 to cache this number of bytes in lv_fs_read()*/
  610. #endif

  612. /*API for open, read, etc*/
  613. #define LV_USE_FS_POSIX 0
  614. #if LV_USE_FS_POSIX
  615.     #define LV_FS_POSIX_LETTER '\0'     /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/
  616.     #define LV_FS_POSIX_PATH ""         /*Set the working directory. File/directory paths will be appended to it.*/
  617.     #define LV_FS_POSIX_CACHE_SIZE 0    /*>0 to cache this number of bytes in lv_fs_read()*/
  618. #endif

  620. /*API for CreateFile, ReadFile, etc*/
  621. #define LV_USE_FS_WIN32 0
  622. #if LV_USE_FS_WIN32
  623.     #define LV_FS_WIN32_LETTER '\0'     /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/
  624.     #define LV_FS_WIN32_PATH ""         /*Set the working directory. File/directory paths will be appended to it.*/
  625.     #define LV_FS_WIN32_CACHE_SIZE 0    /*>0 to cache this number of bytes in lv_fs_read()*/
  626. #endif

  628. /*API for FATFS (needs to be added separately). Uses f_open, f_read, etc*/
  629. #define LV_USE_FS_FATFS 0
  630. #if LV_USE_FS_FATFS
  631.     #define LV_FS_FATFS_LETTER '\0'     /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/
  632.     #define LV_FS_FATFS_CACHE_SIZE 0    /*>0 to cache this number of bytes in lv_fs_read()*/
  633. #endif

  635. /*PNG decoder library*/
  636. #define LV_USE_PNG 1

  638. /*BMP decoder library*/
  639. #define LV_USE_BMP 1

  641. /* JPG + split JPG decoder library.
  642. * Split JPG is a custom format optimized for embedded systems. */
  643. #define LV_USE_SJPG 1

  645. /*GIF decoder library*/
  646. #define LV_USE_GIF 1

  648. /*QR code library*/
  649. #define LV_USE_QRCODE 0

  651. /*FreeType library*/
  652. #define LV_USE_FREETYPE 0
  653. #if LV_USE_FREETYPE
  654.     /*Memory used by FreeType to cache characters [bytes] (-1: no caching)*/
  655.     #define LV_FREETYPE_CACHE_SIZE (16 * 1024)
  656.     #if LV_FREETYPE_CACHE_SIZE >= 0
  657.         /* 1: bitmap cache use the sbit cache, 0:bitmap cache use the image cache. */
  658.         /* sbit cache:it is much more memory efficient for small bitmaps(font size < 256) */
  659.         /* if font size >= 256, must be configured as image cache */
  660.         #define LV_FREETYPE_SBIT_CACHE 0
  661.         /* Maximum number of opened FT_Face/FT_Size objects managed by this cache instance. */
  662.         /* (0:use system defaults) */
  663.         #define LV_FREETYPE_CACHE_FT_FACES 0
  664.         #define LV_FREETYPE_CACHE_FT_SIZES 0
  665.     #endif
  666. #endif

  668. /*Rlottie library*/
  669. #define LV_USE_RLOTTIE 0

  671. /*FFmpeg library for image decoding and playing videos
  672. *Supports all major image formats so do not enable other image decoder with it*/
  673. #define LV_USE_FFMPEG 0
  674. #if LV_USE_FFMPEG
  675.     /*Dump input information to stderr*/
  676.     #define LV_FFMPEG_DUMP_FORMAT 0
  677. #endif

  679. /*-----------
  680. * Others
  681. *----------*/

  683. /*1: Enable API to take snapshot for object*/
  684. #define LV_USE_SNAPSHOT 1

  686. /*1: Enable Monkey test*/
  687. #define LV_USE_MONKEY 0

  689. /*1: Enable grid navigation*/
  690. #define LV_USE_GRIDNAV 1

  692. /*1: Enable lv_obj fragment*/
  693. #define LV_USE_FRAGMENT 1

  695. /*1: Support using images as font in label or span widgets */
  696. #define LV_USE_IMGFONT 1

  698. /*1: Enable a published subscriber based messaging system */
  699. #define LV_USE_MSG 1

  701. /*1: Enable Pinyin input method*/
  702. /*Requires: lv_keyboard*/
  703. #define LV_USE_IME_PINYIN 1
  704. #if LV_USE_IME_PINYIN
  705.     /*1: Use default thesaurus*/
  706.     /*If you do not use the default thesaurus, be sure to use `lv_ime_pinyin` after setting the thesauruss*/
  707.     #define LV_IME_PINYIN_USE_DEFAULT_DICT 1
  708.     /*Set the maximum number of candidate panels that can be displayed*/
  709.     /*This needs to be adjusted according to the size of the screen*/
  710.     #define LV_IME_PINYIN_CAND_TEXT_NUM 6

  712.     /*Use 9 key input(k9)*/
  713.     #define LV_IME_PINYIN_USE_K9_MODE      0
  714.     #if LV_IME_PINYIN_USE_K9_MODE == 1
  715.         #define LV_IME_PINYIN_K9_CAND_TEXT_NUM 3
  716.     #endif // LV_IME_PINYIN_USE_K9_MODE
  717. #endif

  719. /*==================
  720. * EXAMPLES
  721. *==================*/

  723. /*Enable the examples to be built with the library*/
  724. #define LV_BUILD_EXAMPLES 0

  726. /*===================
  727. * DEMO USAGE
  728. ====================*/

  730. /*Show some widget. It might be required to increase `LV_MEM_SIZE` */
  731. #define LV_USE_DEMO_WIDGETS 0
  732. #if LV_USE_DEMO_WIDGETS
  733. #define LV_DEMO_WIDGETS_SLIDESHOW 0
  734. #endif

  736. /*Demonstrate the usage of encoder and keyboard*/
  737. #define LV_USE_DEMO_KEYPAD_AND_ENCODER 0

  739. /*Benchmark your system*/
  740. #define LV_USE_DEMO_BENCHMARK 0
  741. #if LV_USE_DEMO_BENCHMARK
  742. /*Use RGB565A8 images with 16 bit color depth instead of ARGB8565*/
  743. #define LV_DEMO_BENCHMARK_RGB565A8 0
  744. #endif

  746. /*Stress test for LVGL*/
  747. #define LV_USE_DEMO_STRESS 0

  749. /*Music player demo*/
  750. #define LV_USE_DEMO_MUSIC 0
  751. #if LV_USE_DEMO_MUSIC
  752.     #define LV_DEMO_MUSIC_SQUARE    0
  753.     #define LV_DEMO_MUSIC_LANDSCAPE 0
  754.     #define LV_DEMO_MUSIC_ROUND     0
  755.     #define LV_DEMO_MUSIC_LARGE     0
  756.     #define LV_DEMO_MUSIC_AUTO_PLAY 0
  757. #endif

  759. /*--END OF LV_CONF_H--*/

  761. #endif /*LV_CONF_H*/

  763. #endif /*End of "Content enable"*/
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5. 创建测试模块
grub-core/Makefile.core.def
  1. module = {
  2.   name = lvgltest;
  3.   common = commands/lvgltest.c;
  4.   cflags = '$(CFLAGS_LVGLAPP)';
  5.   cppflags = '$(CPPFLAGS_LVGLAPP)';
  6. };
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grub-core/commands/lvgltest.c
  1. /*
  2. *  GRUB  --  GRand Unified Bootloader
  3. *  Copyright (C) 2022  A1ive
  4. *
  5. *  GRUB is free software: you can redistribute it and/or modify
  6. *  it under the terms of the GNU General Public License as published by
  7. *  the Free Software Foundation, either version 3 of the License, or
  8. *  (at your option) any later version.
  9. *
  10. *  GRUB is distributed in the hope that it will be useful,
  11. *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13. *  GNU General Public License for more details.
  14. *
  15. *  You should have received a copy of the GNU General Public License
  16. *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17. */

  19. #include <grub/types.h>
  20. #include <grub/misc.h>
  21. #include <grub/mm.h>
  22. #include <grub/err.h>
  23. #include <grub/dl.h>
  24. #include <grub/extcmd.h>
  25. #include <grub/i18n.h>

  27. #include <lvgl.h>

  29. GRUB_MOD_LICENSE ("GPLv3+");

  31. static grub_err_t
  32. grub_cmd_lvgl (grub_extcmd_context_t ctxt __attribute__ ((unused)),
  33.                int argc __attribute__ ((unused)),
  34.                char **args __attribute__ ((unused)))
  35. {
  36.   lv_init ();
  37.   grub_printf ("lv_init OK.\n");
  38.   return 0;
  39. }

  41. static grub_extcmd_t cmd;

  43. GRUB_MOD_INIT(lvgltest)
  44. {
  45.   cmd = grub_register_extcmd ("lvgltest", grub_cmd_lvgl, 0, 0,
  46.                               N_("LVGL test."), 0);
  47. }

  49. GRUB_MOD_FINI(lvgltest)
  50. {
  51.   grub_unregister_extcmd (cmd);
  52. }
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wintoflash 发表于 2022-9-21 13:43:38
本帖最后由 wintoflash 于 2022-10-1 13:38 编辑

2. 改造 GRUB2 posix_wrap 库
修改 grub-core/lib/posix_wrap/sys/types.h，添加以下内容：
  1. typedef grub_uint64_t uintmax_t;
  2. typedef grub_int64_t intmax_t;
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修改 grub-core/lib/posix_wrap/limits.h，添加以下内容：
  1. #define INT8_MIN GRUB_SCHAR_MIN
  2. #define INT8_MAX GRUB_SCHAR_MAX
  3. #define INT16_MIN GRUB_SHRT_MIN
  4. #define INT16_MAX GRUB_SHRT_MAX
  5. #define INT32_MIN GRUB_INT32_MIN
  6. #define INT32_MAX GRUB_INT32_MAX

  8. #define UINT8_MAX GRUB_UCHAR_MAX
  9. #define UINT16_MAX GRUB_USHRT_MAX
  10. #define UINT32_MAX GRUB_UINT_MAX
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修改 grub-core/lib/posix_wrap/inttypes.h：
  1. #ifndef GRUB_POSIX_INTTYPES_H
  2. #define GRUB_POSIX_INTTYPES_H

  4. #include <sys/types.h>

  6. #define PRId32 PRIdGRUB_INT32_T
  7. #define PRIu32 PRIuGRUB_UINT32_T
  8. #define PRIx32 PRIxGRUB_UINT32_T

  10. #define PRId64 PRIdGRUB_INT64_T
  11. #define PRIu64 PRIdGRUB_UINT64_T
  12. #define PRIx64 PRIdGRUB_UINT64_T

  14. #endif
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修改 grub-core/lib/posix_wrap/stdint.h，添加以下内容：
  1. #include <limits.h>
复制代码

修改 grub-core/lib/posix_wrap/string.h， 添加以下函数：
  1. static inline int
  2. strncmp (const char *s1, const char *s2, grub_size_t n)
  3. {
  4.   return grub_strncmp (s1, s2, n);
  5. }

  7. static inline char *
  8. strcat (char *dest, const char *src)
  9. {
  10.   grub_strcpy (dest + grub_strlen (dest), src);
  11.   return dest;
  12. }
复制代码

3. 修改 GRUB2 compiler-rt
由于 LVGL 中使用到了 64 位整数除法，因此要在 i386 架构下添加 __udivmoddi4 和 __divmoddi4 这两个符号。
修改 include/grub/misc.h：
  1. #if !defined(GRUB_MACHINE_EMU) && (defined(__arm__) || defined(__ia64__) || \
  2.     (defined(__riscv) && (__riscv_xlen == 32)))
  3. #define GRUB_DIVISION_IN_SOFTWARE 1
复制代码

改为
  1. #if !defined(GRUB_MACHINE_EMU) && (defined(__arm__) || defined(__ia64__) || \
  2.     defined(__i386__) || (defined(__riscv) && (__riscv_xlen == 32)))
  3. #define GRUB_DIVISION_IN_SOFTWARE 1
复制代码

修改 gentpl.py：
  1. GROUPS["softdiv"] = GROUPS["arm"] + ["ia64_efi"] + GROUPS["riscv32"]
复制代码

改为
  1. GROUPS["softdiv"] = GROUPS["arm"] + ["ia64_efi"] + GROUPS["i386"] + GROUPS["riscv32"]
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修改 include/grub/compiler-rt.h，在 #if defined(GRUB_DIVISION_IN_SOFTWARE) && GRUB_DIVISION_IN_SOFTWARE 条件里面加入
  1. grub_uint64_t
  2. EXPORT_FUNC (__udivmoddi4) (grub_uint64_t n, grub_uint64_t d, grub_uint64_t *r);

  4. grub_int64_t
  5. EXPORT_FUNC(__divmoddi4) (grub_int64_t n, grub_int64_t d, grub_int64_t *r);
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修改 grub-core/kern/compiler-rt.c，在对应条件下加入
  1. grub_uint64_t
  2. __udivmoddi4 (grub_uint64_t n, grub_uint64_t d, grub_uint64_t *r)
  3. {
  4.   return grub_divmod64 (n, d, r);
  5. }

  7. grub_int64_t
  8. __divmoddi4 (grub_int64_t n, grub_int64_t d, grub_int64_t *r)
  9. {
  10.   return grub_divmod64s (n, d, r);
  11. }
复制代码


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