lvgl is not an arduino library. I am trying to put this PenPot file on an ESP32S3Box3 --- I can see you've uploaded a PenPot file and want to implement the design on an ESP32-S3-Box-3 using LVGL. Let me read the file to understand the design.Ran 15 commands, viewed a fileRan 15 commands, viewed a fileNow I have a thorough understanding of the design. Let me also extract the text content properly and check the objects (images).Ran 2 commandsRan 2 commandsNow I have everything I need. I have 6 PNG thumbnails of the actual screen designs (320×240, matching the ESP32-S3-Box-3 display), and the full navigation structure. Let me view those images and generate the LVGL code.Ran a command, read a fileRan a command, read a fileGood — I can now see the actual screen thumbnails. Now let me generate the full LVGL C code.Final nav structure extractionFinal nav structure extractionNow I have a complete picture of the design. Let me generate the LVGL C code:Created 3 files, read a fileCreated 3 files, read a fileHere's what I found in the PenPot file and what the code does: Design breakdown (320×240, matching the S3-Box-3 display exactly): 6 screens numbered 0–5, all black backgrounds Linear navigation: 0 ↔ 1 ↔ 2 ↔ 3 ↔ 4 ↔ 5 (left/right chevrons) Screen 0 has only a right chevron, screen 5 has only a left chevron Each screen has a large screen-number label at the top, white chevron arrows on the sides, and a decorative center icon What the LVGL code generates: lv_obj_t screens for all 6 frames, pre-built and cached (fast switching) Transparent lv_btn objects as touch targets for the chevrons, with lv_line drawing the < > shapes lv_scr_load_anim() with fade transitions between screens A ui_set_screen_icon() hook so you can drop in the real center icons once you export them from PenPot One thing to do: The center icon in the design is a complex vector path (~19,000 characters of SVG data). LVGL can't render arbitrary SVG paths at runtime, so it's currently a placeholder rectangle. To get the real icon: right-click the center path in PenPot → Export as PNG at 86×73 px → convert with the LVGL Image Converter → call ui_set_screen_icon(n, &your_icon). The README has the full steps. --- how for arduino ide? --- Yes, absolutely. The S3-Box-3 is supported in Arduino IDE. Here's how: 1. Install board support In Arduino IDE, go to File → Preferences and add this to "Additional boards manager URLs": https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json Then Tools → Board → Boards Manager, search "esp32" and install the Espressif package (2.x or 3.x). 2. Install LVGL Sketch → Include Library → Manage Libraries → search "lvgl" and install it. You'll also need to copy lv_conf_template.h from the lvgl library folder, rename it lv_conf.h, place it one level up, and enable LV_FONT_MONTSERRAT_72 1 in it. 3. The problem with the current code The .c file I generated uses ESP-IDF style (no setup()/loop(), raw lv_port calls). It won't compile as-is in Arduino. I can rewrite it as a proper Arduino .ino that uses the LVGL + Arduino-ESP32 + ESP32-S3-Box-3 BSP display library. 4. The easier Arduino option Espressif publishes an Arduino library specifically for the S3-Box-3 display stack. In Library Manager search for ESP32_Display_Panel — it handles the display init, touch, and LVGL wiring for you, so your sketch becomes just the UI logic. Would you like me to rewrite the UI code as an Arduino .ino using that library? That would be the most copy-paste-friendly path for Arduino IDE. --- plz, the ino --- Here's the full setup to get it running: Libraries to install first (Library Manager in Arduino IDE): ESP32_Display_Panel by Espressif — handles the display, backlight, and touch for the Box-3 automatically lvgl by LVGL — install v8.x (not v9, the API changed) The lv_conf.h step (easy to miss, sketch won't compile without it): Go to your Arduino libraries folder (usually Documents/Arduino/libraries/) Copy lvgl/lv_conf_template.h one level up to libraries/lv_conf.h Open it, find #if 0 at the top and change it to #if 1 Set LV_FONT_MONTSERRAT_48 1 inside it Board settings in Tools menu: Board → ESP32S3 Dev Module Flash Size → 16MB PSRAM → OPI PSRAM USB CDC On Boot → Enabled To upload: plug in via USB-C, select the correct port, hit Upload. The sketch is in a folder called esp32s3box3_ui — Arduino requires the folder name and .ino filename to match, so keep that as-is. The center icon area is still a placeholder rectangle for now. Once you're happy with the nav working, export each screen's center icon from PenPot as a PNG, convert it with the LVGL image converter, and drop the resulting .c file into the sketch folder — want me to show you how to wire that in? --- ``` /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:43:8: error: 'lv_disp_draw_buf_t' does not name a type; did you mean 'lv_draw_buf_t'? 43 | static lv_disp_draw_buf_t draw_buf; | ^~~~~~~~~~~~~~~~~~ | lv_draw_buf_t /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:13: error: variable or field 'lvgl_flush_cb' declared void 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^~~~~~~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:27: error: 'lv_disp_drv_t' was not declared in this scope; did you mean 'lv_fs_drv_t'? 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^~~~~~~~~~~~~ | lv_fs_drv_t /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:42: error: 'drv' was not declared in this scope; did you mean 'div'? 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^~~ | div /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:47: error: expected primary-expression before 'const' 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:81: error: expected primary-expression before '*' token 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:82: error: 'color_p' was not declared in this scope 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:13: error: variable or field 'lvgl_touch_cb' declared void 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^~~~~~~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:27: error: 'lv_indev_drv_t' was not declared in this scope; did you mean 'lv_indev_data_t'? 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^~~~~~~~~~~~~~ | lv_indev_data_t /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:43: error: 'drv' was not declared in this scope; did you mean 'div'? 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^~~ | div /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:64: error: expected primary-expression before '*' token 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:65: error: 'data' was not declared in this scope 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:65: note: suggested alternatives: In file included from /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/xtensa-esp-elf/include/c++/14.2.0/unordered_map:42, from /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/xtensa-esp-elf/include/c++/14.2.0/functional:63, from /Users/ger/Library/Arduino15/packages/esp32/hardware/esp32/3.3.7/cores/esp32/HardwareSerial.h:49, from /Users/ger/Library/Arduino15/packages/esp32/hardware/esp32/3.3.7/cores/esp32/Arduino.h:202, from /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:30: /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/xtensa-esp-elf/include/c++/14.2.0/bits/range_access.h:344:5: note: 'std::data' 344 | data(initializer_list<_Tp> __il) noexcept | ^~~~ In file included from /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/xtensa-esp-elf/include/c++/14.2.0/bits/ranges_algobase.h:38, from /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/xtensa-esp-elf/include/c++/14.2.0/bits/ranges_algo.h:38, from /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/xtensa-esp-elf/include/c++/14.2.0/algorithm:63, from /Users/ger/Library/Arduino15/packages/esp32/hardware/esp32/3.3.7/cores/esp32/Arduino.h:190: /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/xtensa-esp-elf/include/c++/14.2.0/bits/ranges_base.h:494:46: note: 'std::ranges::_Cpo::data' 494 | inline constexpr ranges::__access::_Data data{}; | ^~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:13: error: variable or field 'lvgl_flush_cb' declared void 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^~~~~~~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:27: error: 'lv_disp_drv_t' was not declared in this scope; did you mean 'lv_fs_drv_t'? 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^~~~~~~~~~~~~ | lv_fs_drv_t /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:42: error: 'drv' was not declared in this scope; did you mean 'div'? 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^~~ | div /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:70:47: error: expected primary-expression before 'const' 70 | static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, | ^~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:71:39: error: expected primary-expression before '*' token 71 | lv_color_t *color_p) | ^ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:71:40: error: 'color_p' was not declared in this scope 71 | lv_color_t *color_p) | ^~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:13: error: variable or field 'lvgl_touch_cb' declared void 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^~~~~~~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:27: error: 'lv_indev_drv_t' was not declared in this scope; did you mean 'lv_indev_data_t'? 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^~~~~~~~~~~~~~ | lv_indev_data_t /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:43: error: 'drv' was not declared in this scope; did you mean 'div'? 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^~~ | div /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:64: error: expected primary-expression before '*' token 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:65: error: 'data' was not declared in this scope 81 | static void lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data) | ^~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:81:65: note: suggested alternatives: /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/xtensa-esp-elf/include/c++/14.2.0/bits/range_access.h:344:5: note: 'std::data' 344 | data(initializer_list<_Tp> __il) noexcept | ^~~~ /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/xtensa-esp-elf/include/c++/14.2.0/bits/ranges_base.h:494:46: note: 'std::ranges::_Cpo::data' 494 | inline constexpr ranges::__access::_Data data{}; | ^~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino: In function 'void add_chevron(lv_obj_t*, int, int, int, int, const lv_point_t*, int, lv_event_cb_t, int)': /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:151:30: error: cannot convert 'const lv_point_t*' to 'const lv_point_precise_t*' 151 | lv_line_set_points(line, pts, pt_cnt); | ^~~ | | | const lv_point_t* In file included from /Users/ger/Documents/Arduino/libraries/lvgl/src/../lvgl.h:76, from /Users/ger/Documents/Arduino/libraries/lvgl/src/lvgl.h:16, from /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:32: /Users/ger/Documents/Arduino/libraries/lvgl/src/../src/widgets/line/lv_line.h:57:66: note: initializing argument 2 of 'void lv_line_set_points(lv_obj_t*, const lv_point_precise_t*, uint32_t)' 57 | void lv_line_set_points(lv_obj_t * obj, const lv_point_precise_t points[], uint32_t point_num); | ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino: In function 'void setup()': /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:233:28: error: 'draw_buf' was not declared in this scope 233 | lv_disp_draw_buf_init(&draw_buf, buf1, buf2, SCREEN_W * BUF_LINES); | ^~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:233:5: error: 'lv_disp_draw_buf_init' was not declared in this scope; did you mean 'lv_draw_buf_init'? 233 | lv_disp_draw_buf_init(&draw_buf, buf1, buf2, SCREEN_W * BUF_LINES); | ^~~~~~~~~~~~~~~~~~~~~ | lv_draw_buf_init /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:236:12: error: 'lv_disp_drv_t' does not name a type; did you mean 'lv_fs_drv_t'? 236 | static lv_disp_drv_t disp_drv; | ^~~~~~~~~~~~~ | lv_fs_drv_t /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:237:23: error: 'disp_drv' was not declared in this scope 237 | lv_disp_drv_init(&disp_drv); | ^~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:237:5: error: 'lv_disp_drv_init' was not declared in this scope; did you mean 'lv_fs_drv_init'? 237 | lv_disp_drv_init(&disp_drv); | ^~~~~~~~~~~~~~~~ | lv_fs_drv_init /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:240:26: error: 'lvgl_flush_cb' was not declared in this scope 240 | disp_drv.flush_cb = lvgl_flush_cb; | ^~~~~~~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:242:5: error: 'lv_disp_drv_register' was not declared in this scope; did you mean 'lv_fs_drv_register'? 242 | lv_disp_drv_register(&disp_drv); | ^~~~~~~~~~~~~~~~~~~~ | lv_fs_drv_register /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:246:16: error: 'lv_indev_drv_t' does not name a type; did you mean 'lv_indev_data_t'? 246 | static lv_indev_drv_t indev_drv; | ^~~~~~~~~~~~~~ | lv_indev_data_t /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:247:28: error: 'indev_drv' was not declared in this scope 247 | lv_indev_drv_init(&indev_drv); | ^~~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:247:9: error: 'lv_indev_drv_init' was not declared in this scope; did you mean 'lv_fs_drv_init'? 247 | lv_indev_drv_init(&indev_drv); | ^~~~~~~~~~~~~~~~~ | lv_fs_drv_init /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:249:29: error: 'lvgl_touch_cb' was not declared in this scope 249 | indev_drv.read_cb = lvgl_touch_cb; | ^~~~~~~~~~~~~ /Users/ger/Downloads/esp32s3box3_ui/esp32s3box3_ui.ino:250:9: error: 'lv_indev_drv_register' was not declared in this scope; did you mean 'lv_fs_drv_register'? 250 | lv_indev_drv_register(&indev_drv); | ^~~~~~~~~~~~~~~~~~~~~ | lv_fs_drv_register exit status 1 Compilation error: 'lv_disp_draw_buf_t' does not name a type; did you mean 'lv_draw_buf_t'? ``` --- You've got LVGL v9 installed — the code I wrote was v8 API. v9 changed a lot of the driver setup calls. Let me rewrite it for v9: All the v8→v9 changes made: Old (v8)New (v9)lv_disp_draw_buf_t / lv_disp_draw_buf_init()lv_display_set_buffers()lv_disp_drv_t / lv_disp_drv_register()lv_display_create() + lv_display_set_flush_cb()lv_indev_drv_t / lv_indev_drv_register()lv_indev_create() + lv_indev_set_read_cb()lv_btn_create()lv_button_create()lv_point_tlv_point_precise_tLV_INDEV_STATE_PR / _RELLV_INDEV_STATE_PRESSED / _RELEASEDflush callback signature (lv_disp_drv_t*, ...)(lv_display_t*, ..., uint8_t*) Give it another compile and let me know what comes back. --- /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld: warning: _floatdidf.o: missing .note.GNU-stack section implies executable stack /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld: /Users/ger/Library/Caches/arduino/sketches/66CF3395B4FB23DE846FAD77F030E71D/esp32s3box3_ui_2nd_attempt.ino.elf section `.dram0.bss' will not fit in region `dram0_0_seg' /Users/ger/Library/Arduino15/packages/esp32/tools/esp-x32/2511/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld: region `dram0_0_seg' overflowed by 8256 bytes collect2: error: ld returned 1 exit status exit status 1 Compilation error: exit status 1 --- Good progress — it compiled! This is now just a RAM issue. The two draw buffers are too big for internal DRAM. The fix is to put them in PSRAM, which the S3-Box-3 has plenty of. The fix: instead of declaring the buffers as static arrays (which live in DRAM and overflowed it by 8KB), they're now pointers allocated at runtime with heap_caps_malloc(... MALLOC_CAP_SPIRAM), which puts them in the 8MB OPI PSRAM. There's also a check that prints an error on Serial if PSRAM allocation fails, which would mean PSRAM wasn't enabled in board settings. One thing to double-check before uploading — in Arduino IDE Tools menu make sure PSRAM is set to "OPI PSRAM" (not "Disabled"). That's the most common reason heap_caps_malloc with MALLOC_CAP_SPIRAM returns null on the S3-Box-3. ---