Hi everybody, My name is Michel and I just start with LVGL. I try to use on ESP 32 Wrover, I’m using IDE Arduino 2.3.2, my display is WT32-SC01 (single module display with ESP32 Wrover attached)
I’ve downloaded the library and try the example, it doesn’t compile.
error Description:
In file included from d:\users\documents\arduino\libraries\lvgl\src/lv_init.h:17,
from d:\users\documents\arduino\libraries\lvgl\lvgl.h:24,
from d:\Users\Documents\Arduino\libraries\lvgl\src/lvgl.h:16,
from C:\Users\Michel Royer\AppData\Local\Temp.arduinoIDE-unsaved202437-15548-y28y85.12r69\LVGL_Arduino\LVGL_Arduino.ino:4:
d:\users\documents\arduino\libraries\lvgl\src/lv_conf_internal.h:59:18: fatal error: …/…/lv_conf.h: No such file or directory
#include “…/…/lv_conf.h” /Else assume lv_conf.h is next to the lvgl folder/
Solution found: I’ve renamed lv_conf_template.h to lv_conf.h
Same problem…
Then I moved the file on the previous directory and it’s now working, I will modify [#include “…/…/lv_conf.h” ] to [ #include “…/lv_conf.h” ] and it will probably work.
But it still doesn’t compile. 
the error this time is:
In file included from d:\users\documents\arduino\libraries\lvgl\src/lv_init.h:17,
from d:\users\documents\arduino\libraries\lvgl\lvgl.h:24,
from d:\Users\Documents\Arduino\libraries\lvgl\src/lvgl.h:16,
from C:\Users\Michel Royer\AppData\Local\Temp.arduinoIDE-unsaved202437-15548-y28y85.12r69\LVGL_Arduino\LVGL_Arduino.ino:4:
d:\users\documents\arduino\libraries\lvgl\src/lv_conf_internal.h:64:120: note: #pragma message: Possible failure to include lv_conf.h, please read the comment in this file if you get errors
#pragma message(“Possible failure to include lv_conf.h, please read the comment in this file if you get errors”)
^
C:\Users\Michel Royer\AppData\Local\Temp.arduinoIDE-unsaved202437-15548-y28y85.12r69\LVGL_Arduino\LVGL_Arduino.ino: In function ‘void setup()’:
C:\Users\Michel Royer\AppData\Local\Temp.arduinoIDE-unsaved202437-15548-y28y85.12r69\LVGL_Arduino\LVGL_Arduino.ino:81:20: error: invalid conversion from ‘long unsigned int ()()’ to ‘lv_tick_get_cb_t’ {aka 'unsigned int ()()’} [-fpermissive]
lv_tick_set_cb(millis);
^~~~~~
In file included from d:\users\documents\arduino\libraries\lvgl\src/misc/lv_timer.h:16,
from d:\users\documents\arduino\libraries\lvgl\lvgl.h:31,
from d:\Users\Documents\Arduino\libraries\lvgl\src/lvgl.h:16,
from C:\Users\Michel Royer\AppData\Local\Temp.arduinoIDE-unsaved202437-15548-y28y85.12r69\LVGL_Arduino\LVGL_Arduino.ino:4:
d:\users\documents\arduino\libraries\lvgl\src\tick\lv_tick.h:77:38: note: initializing argument 1 of ‘void lv_tick_set_cb(lv_tick_get_cb_t)’
void lv_tick_set_cb(lv_tick_get_cb_t cb);
~~~~~~~~~~~~~~~~~^~
exit status 1
Compilation error: invalid conversion from ‘long unsigned int ()()’ to ‘lv_tick_get_cb_t’ {aka 'unsigned int ()()’} [-fpermissive]
Curious error for an example program??
is there anybody who can help with this error??
Thank you for your time. 
