Arduino compiler

pvid · December 4, 2022, 9:46pm

Regarding a project with Squareline, I am following the instructions exactly, however, the arduino simply cannot compile, even when logged in. I tested it with the ‘smart gadget’ demo project and it worked. Here’s what pops up on the screen when compiling.

ui_helpers.h:23:32: error: unknown type name ‘lv_obj_t’
void _ui_dropdown_set_property(lv_obj_t * target, int id, int val);
^

ui_helpers.h:26:29: error: unknown type name ‘lv_obj_t’
void _ui_image_set_property(lv_obj_t * target, int id, uint8_t * val);
^

ui_helpers.h:26:56: error: unknown type name ‘uint8_t’
void _ui_image_set_property(lv_obj_t * target, int id, uint8_t * val);

…

Other error messages are similar.

…

kisvegabor · December 6, 2022, 8:12am

Please add the whole compiler log.

pvid · December 7, 2022, 5:59pm

Thanks for answering. I tried to find the log file but I couldn’t. Do you know which folder it is located in?

kisvegabor · December 8, 2022, 8:19am

I mean the compiler log of Arduino that you see at the bottom of the window with orange letters.

cdchristian · February 6, 2023, 1:39am

I’ll add to this issue since I have the same problem. I am exporting a sample display just to make sure all is working. Since I am using the WT32-SCO1 Plus (8-bit parallel display), I changed the library from TFT_eSPI to lovyanGFX. I also followed the sample code from ThatProject (their Speedometer example, found here)–I set the includes in proper order, and I added my pinout descriptions. I got that example code from ThatProject to compile without issues once, then I started getting some error about changing LV_COLOR_DEPTH out of nowhere (separate issue).

I am using Arduino IDE 2.0.3 on Windows 11. Here are the library versions:

lvgl 8.3.4
lovyanGFX 1.1.2

In an attempt to troubleshoot, I removed the ESP32 board files as well as the lvgl, TFT_eSPI, and lovyanGFX libraries, then reinstalled all but the TFT_eSPI library. The lv_conf.h file is in my …/Arduino/libraries folder (where the lvgl folder; the project file is in the …/Arduino folder), and I set #if 0 to #if 1.

Here is the full error output (after all the est32s3 gcc stuff):

In file included from C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:6:
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:14:27: error: unknown type name 'lv_obj_t'
 void _ui_bar_set_property(lv_obj_t * target, int id, int val);
                           ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:20:29: error: unknown type name 'lv_obj_t'
 void _ui_basic_set_property(lv_obj_t * target, int id, int val);
                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:23:32: error: unknown type name 'lv_obj_t'
 void _ui_dropdown_set_property(lv_obj_t * target, int id, int val);
                                ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:26:29: error: unknown type name 'lv_obj_t'
 void _ui_image_set_property(lv_obj_t * target, int id, uint8_t * val);
                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:26:56: error: unknown type name 'uint8_t'
 void _ui_image_set_property(lv_obj_t * target, int id, uint8_t * val);
                                                        ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:29:29: error: unknown type name 'lv_obj_t'
 void _ui_label_set_property(lv_obj_t * target, int id, char * val);
                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:33:30: error: unknown type name 'lv_obj_t'
 void _ui_roller_set_property(lv_obj_t * target, int id, int val);
                              ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:37:30: error: unknown type name 'lv_obj_t'
 void _ui_slider_set_property(lv_obj_t * target, int id, int val);
                              ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:39:24: error: unknown type name 'lv_obj_t'
 void _ui_screen_change(lv_obj_t * target, lv_scr_load_anim_t fademode, int spd, int delay);
                        ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:39:43: error: unknown type name 'lv_scr_load_anim_t'
 void _ui_screen_change(lv_obj_t * target, lv_scr_load_anim_t fademode, int spd, int delay);
                                           ^~~~~~~~~~~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:41:24: error: unknown type name 'lv_obj_t'
 void _ui_arc_increment(lv_obj_t * target, int val);
                        ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:43:24: error: unknown type name 'lv_obj_t'
 void _ui_bar_increment(lv_obj_t * target, int val, int anm);
                        ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:45:27: error: unknown type name 'lv_obj_t'
 void _ui_slider_increment(lv_obj_t * target, int val, int anm);
                           ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:47:30: error: unknown type name 'lv_obj_t'
 void _ui_keyboard_set_target(lv_obj_t * keyboard, lv_obj_t * textarea);
                              ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:47:51: error: unknown type name 'lv_obj_t'
 void _ui_keyboard_set_target(lv_obj_t * keyboard, lv_obj_t * textarea);
                                                   ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:52:22: error: unknown type name 'lv_obj_t'
 void _ui_flag_modify(lv_obj_t * target, int32_t flag, int value);
                      ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:52:41: error: unknown type name 'int32_t'
 void _ui_flag_modify(lv_obj_t * target, int32_t flag, int value);
                                         ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:57:23: error: unknown type name 'lv_obj_t'
 void _ui_state_modify(lv_obj_t * target, int32_t state, int value);
                       ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:57:42: error: unknown type name 'int32_t'
 void _ui_state_modify(lv_obj_t * target, int32_t state, int value);
                                          ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:59:22: error: unknown type name 'lv_obj_t'
 void _ui_opacity_set(lv_obj_t * target, int val);
                      ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:61:30: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_x(lv_anim_t * a, int32_t v);
                              ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:61:45: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_x(lv_anim_t * a, int32_t v);
                                             ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:63:30: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_y(lv_anim_t * a, int32_t v);
                              ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:63:45: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_y(lv_anim_t * a, int32_t v);
                                             ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:65:34: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_width(lv_anim_t * a, int32_t v);
                                  ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:65:49: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_width(lv_anim_t * a, int32_t v);
                                                 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:67:35: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_height(lv_anim_t * a, int32_t v);
                                   ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:67:50: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_height(lv_anim_t * a, int32_t v);
                                                  ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:69:36: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_opacity(lv_anim_t * a, int32_t v);
                                    ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:69:51: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_opacity(lv_anim_t * a, int32_t v);
                                                   ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:71:39: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_image_zoom(lv_anim_t * a, int32_t v);
                                       ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:71:54: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_image_zoom(lv_anim_t * a, int32_t v);
                                                      ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:73:40: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_image_angle(lv_anim_t * a, int32_t v);
                                        ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:73:55: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_image_angle(lv_anim_t * a, int32_t v);
                                                       ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:75:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_x(lv_anim_t * a);
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:75:33: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_x(lv_anim_t * a);
                                 ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:77:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_y(lv_anim_t * a);
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:77:33: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_y(lv_anim_t * a);
                                 ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:79:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_width(lv_anim_t * a);
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:79:37: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_width(lv_anim_t * a);
                                     ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:81:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_height(lv_anim_t * a);
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:81:38: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_height(lv_anim_t * a);
                                      ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:83:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_opacity(lv_anim_t * a);
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:83:39: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_opacity(lv_anim_t * a);
                                       ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:85:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_image_zoom(lv_anim_t * a);
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:85:42: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_image_zoom(lv_anim_t * a);
                                          ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:87:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_image_angle(lv_anim_t * a);
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:87:43: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_image_angle(lv_anim_t * a);
                                           ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:89:29: error: unknown type name 'lv_obj_t'
 void _ui_arc_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * prefix, char * postfix);
                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:89:45: error: unknown type name 'lv_obj_t'
 void _ui_arc_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * prefix, char * postfix);
                                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:91:32: error: unknown type name 'lv_obj_t'
 void _ui_slider_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * prefix, char * postfix);
                                ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:91:48: error: unknown type name 'lv_obj_t'
 void _ui_slider_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * prefix, char * postfix);
                                                ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:93:33: error: unknown type name 'lv_obj_t'
 void _ui_checked_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * txt_on, char * txt_off);
                                 ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.h:93:49: error: unknown type name 'lv_obj_t'
 void _ui_checked_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * txt_on, char * txt_off);
                                                 ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:8:27: error: unknown type name 'lv_obj_t'
 void _ui_bar_set_property(lv_obj_t * target, int id, int val)
                           ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:14:29: error: unknown type name 'lv_obj_t'
 void _ui_basic_set_property(lv_obj_t * target, int id, int val)
                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:23:32: error: unknown type name 'lv_obj_t'
 void _ui_dropdown_set_property(lv_obj_t * target, int id, int val)
                                ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:28:29: error: unknown type name 'lv_obj_t'
 void _ui_image_set_property(lv_obj_t * target, int id, uint8_t * val)
                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:28:56: error: unknown type name 'uint8_t'
 void _ui_image_set_property(lv_obj_t * target, int id, uint8_t * val)
                                                        ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:33:29: error: unknown type name 'lv_obj_t'
 void _ui_label_set_property(lv_obj_t * target, int id, char * val)
                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:39:30: error: unknown type name 'lv_obj_t'
 void _ui_roller_set_property(lv_obj_t * target, int id, int val)
                              ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:45:30: error: unknown type name 'lv_obj_t'
 void _ui_slider_set_property(lv_obj_t * target, int id, int val)
                              ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:52:24: error: unknown type name 'lv_obj_t'
 void _ui_screen_change(lv_obj_t * target, lv_scr_load_anim_t fademode, int spd, int delay)
                        ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:52:43: error: unknown type name 'lv_scr_load_anim_t'
 void _ui_screen_change(lv_obj_t * target, lv_scr_load_anim_t fademode, int spd, int delay)
                                           ^~~~~~~~~~~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:57:24: error: unknown type name 'lv_obj_t'
 void _ui_arc_increment(lv_obj_t * target, int val)
                        ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:64:24: error: unknown type name 'lv_obj_t'
 void _ui_bar_increment(lv_obj_t * target, int val, int anm)
                        ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:70:27: error: unknown type name 'lv_obj_t'
 void _ui_slider_increment(lv_obj_t * target, int val, int anm)
                           ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:77:30: error: unknown type name 'lv_obj_t'
 void _ui_keyboard_set_target(lv_obj_t * keyboard, lv_obj_t * textarea)
                              ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:77:51: error: unknown type name 'lv_obj_t'
 void _ui_keyboard_set_target(lv_obj_t * keyboard, lv_obj_t * textarea)
                                                   ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:82:22: error: unknown type name 'lv_obj_t'
 void _ui_flag_modify(lv_obj_t * target, int32_t flag, int value)
                      ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:82:41: error: unknown type name 'int32_t'
 void _ui_flag_modify(lv_obj_t * target, int32_t flag, int value)
                                         ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:91:23: error: unknown type name 'lv_obj_t'
 void _ui_state_modify(lv_obj_t * target, int32_t state, int value)
                       ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:91:42: error: unknown type name 'int32_t'
 void _ui_state_modify(lv_obj_t * target, int32_t state, int value)
                                          ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:101:22: error: unknown type name 'lv_obj_t'
 void _ui_opacity_set(lv_obj_t * target, int val)
                      ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:106:30: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_x(lv_anim_t * a, int32_t v)
                              ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:106:45: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_x(lv_anim_t * a, int32_t v)
                                             ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:111:30: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_y(lv_anim_t * a, int32_t v)
                              ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:111:45: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_y(lv_anim_t * a, int32_t v)
                                             ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:116:34: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_width(lv_anim_t * a, int32_t v)
                                  ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:116:49: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_width(lv_anim_t * a, int32_t v)
                                                 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:121:35: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_height(lv_anim_t * a, int32_t v)
                                   ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:121:50: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_height(lv_anim_t * a, int32_t v)
                                                  ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:126:36: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_opacity(lv_anim_t * a, int32_t v)
                                    ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:126:51: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_opacity(lv_anim_t * a, int32_t v)
                                                   ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:131:39: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_image_zoom(lv_anim_t * a, int32_t v)
                                       ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:131:54: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_image_zoom(lv_anim_t * a, int32_t v)
                                                      ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:136:40: error: unknown type name 'lv_anim_t'
 void _ui_anim_callback_set_image_angle(lv_anim_t * a, int32_t v)
                                        ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:136:55: error: unknown type name 'int32_t'
 void _ui_anim_callback_set_image_angle(lv_anim_t * a, int32_t v)
                                                       ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:142:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_x(lv_anim_t * a)
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:142:33: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_x(lv_anim_t * a)
                                 ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:147:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_y(lv_anim_t * a)
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:147:33: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_y(lv_anim_t * a)
                                 ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:152:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_width(lv_anim_t * a)
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:152:37: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_width(lv_anim_t * a)
                                     ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:157:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_height(lv_anim_t * a)
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:157:38: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_height(lv_anim_t * a)
                                      ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:162:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_opacity(lv_anim_t * a)
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:162:39: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_opacity(lv_anim_t * a)
                                       ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:167:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_image_zoom(lv_anim_t * a)
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:167:42: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_image_zoom(lv_anim_t * a)
                                          ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:172:1: error: unknown type name 'int32_t'
 int32_t _ui_anim_callback_get_image_angle(lv_anim_t * a)
 ^~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:172:43: error: unknown type name 'lv_anim_t'
 int32_t _ui_anim_callback_get_image_angle(lv_anim_t * a)
                                           ^~~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:177:29: error: unknown type name 'lv_obj_t'
 void _ui_arc_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * prefix, char * postfix)
                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:177:45: error: unknown type name 'lv_obj_t'
 void _ui_arc_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * prefix, char * postfix)
                                             ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:184:32: error: unknown type name 'lv_obj_t'
 void _ui_slider_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * prefix, char * postfix)
                                ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:184:48: error: unknown type name 'lv_obj_t'
 void _ui_slider_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * prefix, char * postfix)
                                                ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:190:33: error: unknown type name 'lv_obj_t'
 void _ui_checked_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * txt_on, char * txt_off)
                                 ^~~~~~~~
C:\Users\coled\OneDrive\Documents\Arduino\beer-tap-info\ui_helpers.c:190:49: error: unknown type name 'lv_obj_t'
 void _ui_checked_set_text_value(lv_obj_t * trg, lv_obj_t * src, char * txt_on, char * txt_off)
                                                 ^~~~~~~~

Using library LovyanGFX at version 1.1.2 in folder: C:\Users\coled\OneDrive\Documents\Arduino\libraries\LovyanGFX 
Using library lvgl at version 8.3.4 in folder: C:\Users\coled\OneDrive\Documents\Arduino\libraries\lvgl 
Using library SPI at version 2.0.0 in folder: C:\Users\coled\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.6\libraries\SPI 
Using library Wire at version 2.0.0 in folder: C:\Users\coled\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.6\libraries\Wire

Here is the code:

#define LGFX_USE_V1
#include <LovyanGFX.hpp>
#include <lvgl.h>
#include "ui.h"


//#include <TFT_eSPI.h>


/*If you want to use the LVGL examples,
  make sure to install the lv_examples Arduino library
  and uncomment the following line.
#include <lv_examples.h>
*/

class LGFX : public lgfx::LGFX_Device {
  lgfx::Panel_ST7796 _panel_instance;
  lgfx::Bus_Parallel8 _bus_instance;
  lgfx::Light_PWM _light_instance;
  lgfx::Touch_FT5x06 _touch_instance;

public:
  LGFX(void) {
    {
      auto cfg = _bus_instance.config();
      cfg.freq_write = 40000000;
      cfg.pin_wr = 47;
      cfg.pin_rd = -1;
      cfg.pin_rs = 0;
      cfg.pin_d0 = 9;
      cfg.pin_d1 = 46;
      cfg.pin_d2 = 3;
      cfg.pin_d3 = 8;
      cfg.pin_d4 = 18;
      cfg.pin_d5 = 17;
      cfg.pin_d6 = 16;
      cfg.pin_d7 = 15;
      _bus_instance.config(cfg);
      _panel_instance.setBus(&_bus_instance);
    }

    {
      auto cfg = _panel_instance.config();
      cfg.pin_cs = -1;
      cfg.pin_rst = 4;
      cfg.pin_busy = -1;
      cfg.memory_width = 320;
      cfg.memory_height = 480;
      cfg.panel_width = 320;
      cfg.panel_height = 480;
      cfg.offset_x = 0;
      cfg.offset_y = 0;
      cfg.offset_rotation = 0;
      cfg.dummy_read_pixel = 8;
      cfg.dummy_read_bits = 1;
      cfg.readable = true;
      cfg.invert = true;
      cfg.rgb_order = false;
      cfg.dlen_16bit = false;
      cfg.bus_shared = true;

      _panel_instance.config(cfg);
    }

    {
      auto cfg = _light_instance.config();
      cfg.pin_bl = 45;
      cfg.invert = false;
      cfg.freq = 44100;
      cfg.pwm_channel = 7;

      _light_instance.config(cfg);
      _panel_instance.setLight(&_light_instance);
    }

    {
      auto cfg = _touch_instance.config();
      cfg.i2c_port = 1;
      cfg.i2c_addr = 0x38;
      cfg.pin_sda = 6;
      cfg.pin_scl = 5;
      cfg.freq = 400000;
      cfg.x_min = 0;
      cfg.x_max = 320;
      cfg.y_min = 0;
      cfg.y_max = 480;

      _touch_instance.config(cfg);
      _panel_instance.setTouch(&_touch_instance);
    }

    setPanel(&_panel_instance);
  }
};

static LGFX tft; /* TFT instance */

/*Change to your screen resolution*/
static const uint32_t screenWidth  = 480;
static const uint32_t screenHeight = 320;

static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[ screenWidth * screenHeight / 10 ];

#if LV_USE_LOG != 0
/* Serial debugging */
void my_print(const char * buf)
{
    Serial.printf(buf);
    Serial.flush();
}
#endif

/* Display flushing */
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
{
    uint32_t w = ( area->x2 - area->x1 + 1 );
    uint32_t h = ( area->y2 - area->y1 + 1 );

    tft.startWrite();
    tft.setAddrWindow( area->x1, area->y1, w, h );
    tft.pushColors( ( uint16_t * )&color_p->full, w * h, true );
    tft.endWrite();

    lv_disp_flush_ready( disp );
}

/*Read the touchpad*/
void my_touchpad_read(lv_indev_drv_t *indev_driver, lv_indev_data_t *data) {

  uint16_t x, y;
  if (tft.getTouch(&x, &y)) {
    data->state = LV_INDEV_STATE_PR;
    data->point.x = x;
    data->point.y = y;

  } else {
    data->state = LV_INDEV_STATE_REL;
  }
}

void setup()
{
    Serial.begin( 115200 ); /* prepare for possible serial debug */

    String LVGL_Arduino = "Hello Arduino! ";
    LVGL_Arduino += String('V') + lv_version_major() + "." + lv_version_minor() + "." + lv_version_patch();

    Serial.println( LVGL_Arduino );
    Serial.println( "I am LVGL_Arduino" );
    
    initDisplay();
    lv_init();

#if LV_USE_LOG != 0
    lv_log_register_print_cb( my_print ); /* register print function for debugging */
#endif

    tft.begin();          /* TFT init */
    tft.setRotation( 3 ); /* Landscape orientation, flipped */

    //lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * screenHeight / 10 ); //Old
    lv_disp_draw_buf_init(&draw_buf, buf, NULL, screenWidth * 10);

    /*Initialize the display*/
    static lv_disp_drv_t disp_drv;
    lv_disp_drv_init( &disp_drv );
    
    /*Change the following line to your display resolution*/
    disp_drv.hor_res = screenWidth;
    disp_drv.ver_res = screenHeight;
    disp_drv.flush_cb = my_disp_flush;
    disp_drv.draw_buf = &draw_buf;
    lv_disp_drv_register( &disp_drv );

    /*Initialize the (dummy) input device driver*/
    static lv_indev_drv_t indev_drv;
    lv_indev_drv_init( &indev_drv );
    indev_drv.type = LV_INDEV_TYPE_POINTER;
    indev_drv.read_cb = my_touchpad_read;
    lv_indev_drv_register( &indev_drv );


    ui_init();

    Serial.println( "Setup done" );
}

void loop()
{
    lv_timer_handler(); /* let the GUI do its work */
    delay(5);
}

void initDisplay() {
  tft.begin();
  tft.setRotation(2);
  tft.setBrightness(255);
  tft.fillScreen(TFT_BLACK);
}

cdchristian · February 6, 2023, 6:54am

Ok, this might be resolved for me now. I tried going back to Arduino 1.8.3, and though it too failed to compile this, it did flag that the project defines in the ui.h and ui_helpers.h files weren’t formatted right. My project name was beer-tap-info (with hyphens), which became “#define _BEER-TAP-INFO…” in those files. I saw that everyone used underscores, so I changed my project name and ensured underscores were used. No more compile issues. Noted going forward, and I hope this helps someone else with the same errors