ESP32-3248S035C with GT911 touch chip, arduino demo compile error
Closed this issue · 16 comments
LVGL version
v9.1.1
What happened?
I ran an example came in 3.5inch_ESP32-3248S035
folder, I don't remember where I downloaded it. It includes lvgl
and TFT_eSPI
libraries.
I updated lvgl
library and still get this error:
Arduino: 1.8.19 (Windows 10), Board: "ESP32 Dev Module, Disabled, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, Core 1, Core 1, None, Disabled"
LVGL_Arduino-3.5CTP-gt911:5:10: fatal error: demos/lv_demos.h: No such file or directory
#include <demos/lv_demos.h>
^~~~~~~~~~~~~~~~~~
compilation terminated.
exit status 1
demos/lv_demos.h: No such file or directory
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In the attachment the example file I used:
How to reproduce?
No response
you have to copy the demos and the examples folder from ..llibraries/vgl/demos to ..libraries/lvgl/src/demos same for examples
I did that:
And get this error:
Arduino: 1.8.19 (Windows 10), Board: "ESP32 Dev Module, Disabled, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, Core 1, Core 1, None, Disabled"
E:\Programs_Files\Arduino\libraries\lvgl-master\src\demos\widgets\assets\img_clothes.c:6:10: fatal error: lvgl/lvgl.h: No such file or directory
#include "lvgl/lvgl.h"
^~~~~~~~~~~~~
compilation terminated.
exit status 1
Error compiling for board ESP32 Dev Module.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
I just want to include this file as a start:
E:\Programs_Files\Arduino\libraries\lvgl\src\indev\lv_indev.h
In the arduino code I did this:
#include "lvgl/src/indev/lv_indev.h"
but it didn't work. What to do ?
Where lv_indev_drv_t
is declared ? I want to run a simple sketch.
I updated
lvgl
library and still get this error:Arduino: 1.8.19 (Windows 10), Board: "ESP32 Dev Module, Disabled, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, Core 1, Core 1, None, Disabled" LVGL_Arduino-3.5CTP-gt911:5:10: fatal error: demos/lv_demos.h: No such file or directory #include <demos/lv_demos.h> ^~~~~~~~~~~~~~~~~~ compilation terminated. exit status 1 demos/lv_demos.h: No such file or directory This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.
Have you set #define LV_USE_DEMO_WIDGETS
in lv_conf.h
to 1?
// Your code
lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * screenHeight / 6 );
/*初始化显示*/
static lv_disp_drv_t disp_drv;
lv_disp_drv_init( &disp_drv );
/*将以下行更改为显示分辨率*/
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 );
/*初始化(虚拟)输入设备驱动程序*/
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 );
I think the style of your code in this section is probably that of LVGL version 8..
LVGL version 9 The code will look something like this.
/*LVGL draw into this buffer, 1/10 screen size usually works well. The size is in bytes*/
#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
uint32_t draw_buf[DRAW_BUF_SIZE / 4];
/* LVGL calls it when a rendered image needs to copied to the display*/
void my_disp_flush( lv_display_t *disp, const lv_area_t *area, uint8_t * px_map){
/*For example ("my_..." functions needs to be implemented by you)
uint32_t w = lv_area_get_width(area);
uint32_t h = lv_area_get_height(area);
my_set_window(area->x1, area->y1, w, h);
my_draw_bitmaps(px_map, w * h);
*/
lv_disp_flush_ready(disp); /*Call it to tell LVGL you are ready*/
}
/*Read the touchpad*/
void my_touchpad_read( lv_indev_t * indev, lv_indev_data_t * data ){
/*For example ("my_..." functions needs to be implemented by you)
int32_t x, y;
bool touched = my_get_touch( &x, &y );
if(!touched) {
data->state = LV_INDEV_STATE_RELEASED;
} else {
data->state = LV_INDEV_STATE_PRESSED;
data->point.x = x;
data->point.y = y;
}
*/
}
void lvSystemSetup(){
lv_init();
disp = lv_display_create(TFT_HOR_RES, TFT_VER_RES);
lv_display_set_flush_cb(disp, my_disp_flush);
lv_display_set_buffers(disp, draw_buf, NULL, sizeof(draw_buf), LV_DISPLAY_RENDER_MODE_PARTIAL);
/*Initialize the input device driver*/
lv_indev_t * indev = lv_indev_create();
lv_indev_set_type(indev, LV_INDEV_TYPE_POINTER); /*Touchpad should have POINTER type*/
lv_indev_set_read_cb(indev, my_touchpad_read);
}
I think this link might be useful. https://docs.lvgl.io/master/integration/framework/arduino.html
Have you set
#define LV_USE_DEMO_WIDGETS
inlv_conf.h
to 1?
Yes. But when I use the old lvgl that came with the display folder from the seller, I don't get any error. I've tried to troubleshoot the source of the error when using the new lvgl library but it will be a difficult one to solve in a short time since I don't have a general understanding of how the library folder works.
I think this link might be useful. https://docs.lvgl.io/master/integration/framework/arduino.html
I did that I got this error:
Arduino: 1.8.19 (Windows 10), Board: "ESP32 Dev Module, Disabled, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, Core 1, Core 1, None, Disabled"
E:\Programs_Files\Arduino\libraries\lvgl\src\demos\widgets\assets\img_clothes.c:6:10: fatal error: lvgl/lvgl.h: No such file or directory
#include "lvgl/lvgl.h"
^~~~~~~~~~~~~
compilation terminated.
exit status 1
Error compiling for board ESP32 Dev Module.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
I did that I got this error:
Arduino: 1.8.19 (Windows 10), Board: "ESP32 Dev Module, Disabled, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, Core 1, Core 1, None, Disabled" E:\Programs_Files\Arduino\libraries\lvgl\src\demos\widgets\assets\img_clothes.c:6:10: fatal error: lvgl/lvgl.h: No such file or directory #include "lvgl/lvgl.h" ^~~~~~~~~~~~~ compilation terminated. exit status 1 Error compiling for board ESP32 Dev Module. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.
In your ..\lvgl\src\demos\widgets\assets\img_clothes.c
file
try changing #include "lvgl/lvgl.h"
to #include "../../../lvgl.h"
and try compiling again.
I did and got this list of errors:
Arduino: 1.8.19 (Windows 10), Board: "ESP32 Dev Module, Disabled, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, Core 1, Core 1, None, Disabled"
LVGL_Arduino-3.5CTP-gt911_2:652:21: error: variable or field 'my_disp_flush' declared void
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~~~~~~~~~
LVGL_Arduino-3.5CTP-gt911_2:652:21: error: 'lv_disp_drv_t' was not declared in this scope
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:652:21: note: suggested alternative: 'lv_fs_drv_t'
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~~~~~~~~~
lv_fs_drv_t
LVGL_Arduino-3.5CTP-gt911_2:652:36: error: 'disp' was not declared in this scope
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:652:36: note: suggested alternative: 'dup'
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~
dup
LVGL_Arduino-3.5CTP-gt911_2:652:42: error: expected primary-expression before 'const'
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~
LVGL_Arduino-3.5CTP-gt911_2:652:76: error: expected primary-expression before '*' token
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^
LVGL_Arduino-3.5CTP-gt911_2:652:77: error: 'color_p' was not declared in this scope
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:652:77: note: suggested alternative: 'lv_color_t'
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~~~
lv_color_t
LVGL_Arduino-3.5CTP-gt911_2:490:24: error: 'TFT_HOR_RES' was not declared in this scope
#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
^~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:490:24: note: in definition of macro 'DRAW_BUF_SIZE'
#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
^~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:490:24: note: suggested alternative: 'LV_HOR_RES'
#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
^~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:490:24: note: in definition of macro 'DRAW_BUF_SIZE'
#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
^~~~~~~~~~~
LVGL_Arduino-3.5CTP-gt911_2:490:38: error: 'TFT_VER_RES' was not declared in this scope
#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
^~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:490:38: note: in definition of macro 'DRAW_BUF_SIZE'
#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
^~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:490:38: note: suggested alternative: 'LV_VER_RES'
#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
^~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:490:38: note: in definition of macro 'DRAW_BUF_SIZE'
#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
^~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino: In function 'void lvSystemSetup()':
LVGL_Arduino-3.5CTP-gt911_2:526:5: error: 'disp' was not declared in this scope
disp = lv_display_create(TFT_HOR_RES, TFT_VER_RES);
^~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:526:5: note: suggested alternative: 'dup'
disp = lv_display_create(TFT_HOR_RES, TFT_VER_RES);
^~~~
dup
LVGL_Arduino-3.5CTP-gt911_2:526:30: error: 'TFT_HOR_RES' was not declared in this scope
disp = lv_display_create(TFT_HOR_RES, TFT_VER_RES);
^~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:526:30: note: suggested alternative: 'LV_HOR_RES'
disp = lv_display_create(TFT_HOR_RES, TFT_VER_RES);
^~~~~~~~~~~
LV_HOR_RES
LVGL_Arduino-3.5CTP-gt911_2:526:43: error: 'TFT_VER_RES' was not declared in this scope
disp = lv_display_create(TFT_HOR_RES, TFT_VER_RES);
^~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:526:43: note: suggested alternative: 'LV_VER_RES'
disp = lv_display_create(TFT_HOR_RES, TFT_VER_RES);
^~~~~~~~~~~
LV_VER_RES
LVGL_Arduino-3.5CTP-gt911_2:528:34: error: 'draw_buf' was not declared in this scope
lv_display_set_buffers(disp, draw_buf, NULL, sizeof(draw_buf), LV_DISPLAY_RENDER_MODE_PARTIAL);
^~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:528:34: note: suggested alternative: 'lv_draw_buf_t'
lv_display_set_buffers(disp, draw_buf, NULL, sizeof(draw_buf), LV_DISPLAY_RENDER_MODE_PARTIAL);
^~~~~~~~
lv_draw_buf_t
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino: At global scope:
LVGL_Arduino-3.5CTP-gt911_2:541:8: error: 'lv_disp_draw_buf_t' does not name a type; did you mean 'lv_draw_buf_t'?
static lv_disp_draw_buf_t draw_buf;
^~~~~~~~~~~~~~~~~~
lv_draw_buf_t
LVGL_Arduino-3.5CTP-gt911_2:652:21: error: variable or field 'my_disp_flush' declared void
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~~~~~~~~~
LVGL_Arduino-3.5CTP-gt911_2:652:21: error: 'lv_disp_drv_t' was not declared in this scope
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:652:21: note: suggested alternative: 'lv_fs_drv_t'
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~~~~~~~~~
lv_fs_drv_t
LVGL_Arduino-3.5CTP-gt911_2:652:36: error: 'disp' was not declared in this scope
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:652:36: note: suggested alternative: 'dup'
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~
dup
LVGL_Arduino-3.5CTP-gt911_2:652:42: error: expected primary-expression before 'const'
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~
LVGL_Arduino-3.5CTP-gt911_2:652:76: error: expected primary-expression before '*' token
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^
LVGL_Arduino-3.5CTP-gt911_2:652:77: error: 'color_p' was not declared in this scope
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:652:77: note: suggested alternative: 'lv_color_t'
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
^~~~~~~
lv_color_t
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino: In function 'void setup()':
LVGL_Arduino-3.5CTP-gt911_2:816:31: error: 'draw_buf' was not declared in this scope
lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * screenHeight / 6 );
^~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:816:31: note: suggested alternative: 'lv_draw_buf_t'
lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * screenHeight / 6 );
^~~~~~~~
lv_draw_buf_t
LVGL_Arduino-3.5CTP-gt911_2:816:7: error: 'lv_disp_draw_buf_init' was not declared in this scope
lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * screenHeight / 6 );
^~~~~~~~~~~~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:816:7: note: suggested alternative: 'lv_draw_buf_init'
lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * screenHeight / 6 );
^~~~~~~~~~~~~~~~~~~~~
lv_draw_buf_init
LVGL_Arduino-3.5CTP-gt911_2:819:14: error: 'lv_disp_drv_t' does not name a type; did you mean 'lv_fs_drv_t'?
static lv_disp_drv_t disp_drv;
^~~~~~~~~~~~~
lv_fs_drv_t
LVGL_Arduino-3.5CTP-gt911_2:820:26: error: 'disp_drv' was not declared in this scope
lv_disp_drv_init( &disp_drv );
^~~~~~~~
LVGL_Arduino-3.5CTP-gt911_2:820:7: error: 'lv_disp_drv_init' was not declared in this scope
lv_disp_drv_init( &disp_drv );
^~~~~~~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:820:7: note: suggested alternative: 'lv_fs_drv_init'
lv_disp_drv_init( &disp_drv );
^~~~~~~~~~~~~~~~
lv_fs_drv_init
LVGL_Arduino-3.5CTP-gt911_2:826:7: error: 'lv_disp_drv_register' was not declared in this scope
lv_disp_drv_register( &disp_drv );
^~~~~~~~~~~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:826:7: note: suggested alternative: 'lv_fs_drv_register'
lv_disp_drv_register( &disp_drv );
^~~~~~~~~~~~~~~~~~~~
lv_fs_drv_register
LVGL_Arduino-3.5CTP-gt911_2:829:14: error: 'lv_indev_drv_t' does not name a type; did you mean 'lv_indev_data_t'?
static lv_indev_drv_t indev_drv;
^~~~~~~~~~~~~~
lv_indev_data_t
LVGL_Arduino-3.5CTP-gt911_2:830:27: error: 'indev_drv' was not declared in this scope
lv_indev_drv_init( &indev_drv );
^~~~~~~~~
LVGL_Arduino-3.5CTP-gt911_2:830:7: error: 'lv_indev_drv_init' was not declared in this scope
lv_indev_drv_init( &indev_drv );
^~~~~~~~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:830:7: note: suggested alternative: 'lv_fs_drv_init'
lv_indev_drv_init( &indev_drv );
^~~~~~~~~~~~~~~~~
lv_fs_drv_init
LVGL_Arduino-3.5CTP-gt911_2:833:7: error: 'lv_indev_drv_register' was not declared in this scope
lv_indev_drv_register( &indev_drv );
^~~~~~~~~~~~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:833:7: note: suggested alternative: 'lv_fs_drv_register'
lv_indev_drv_register( &indev_drv );
^~~~~~~~~~~~~~~~~~~~~
lv_fs_drv_register
LVGL_Arduino-3.5CTP-gt911_2:848:7: error: 'lv_demo_widgets' was not declared in this scope
lv_demo_widgets(); // OK
^~~~~~~~~~~~~~~
E:\projects_electronics_programming\tft\esp32_3248s035\LVGL_Arduino-3.5CTP-gt911_2\LVGL_Arduino-3.5CTP-gt911_2.ino:848:7: note: suggested alternative: 'lv_demos_create'
lv_demo_widgets(); // OK
^~~~~~~~~~~~~~~
lv_demos_create
exit status 1
variable or field 'my_disp_flush' declared void
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
This is the code example I'm using:
Try compiling this again. LVGL_Arduino-3.5CTP-gt911_2.zip
I had to uncomment these lines:
static const uint16_t screenWidth = 320;
static const uint16_t screenHeight = 480;
And add this:
typedef struct {
void * buf1;
void * buf2;
uint32_t size; // Size of each buffer in bytes
} lv_disp_draw_buf_t;
At E:\Programs_Files\Arduino\libraries\lvgl\src\display\lv_display.h
It compiles but nothing shows on the display.
And add this:
typedef struct { void * buf1; void * buf2; uint32_t size; // Size of each buffer in bytes } lv_disp_draw_buf_t;
At
E:\Programs_Files\Arduino\libraries\lvgl\src\display\lv_display.h
Why do you want to add this?
You want to customize the display buffer, e.g. Buffer size Number of buffers? If so, you can adjust it here.
#define DRAW_BUF_SIZE (screenWidth * screenHeight / 10 * (LV_COLOR_DEPTH / 8))
uint8_t draw_buf[DRAW_BUF_SIZE / 4];
/*If you need to use 2 display buffer, uncomment this line*/
//uint8_t draw_buf2[DRAW_BUF_SIZE / 4];
//=====================================================================//
// in lvSystemSetup()
/*If you need to use 2 display buffer, uncomment this line*/
//lv_display_set_buffers(disp, draw_buf, draw_buf2, sizeof(DRAW_BUF_SIZE), LV_DISPLAY_RENDER_MODE_PARTIAL);
And this is the latest file I updated. Try compiling it. LVGL_Arduino-3.5CTP-gt911_3.zip
Why do you want to add this?
Because it's not there and if I don't add it in one of the header files, I will get an error. I even didn't find any declaration anywhere about that typedef, I got it by asking chatgpt.
You want to customize the display buffer, e.g. Buffer size Number of buffers? If so, you can adjust it here.
All I want now is to get the display to work. Even TFT_eSPI examples aren't working. So, now I better know what is the display problem and get it to work with TFT_eSPI examples then run lvgl examples.
I opened a new issue in Bodmer TFT_eSPI library:
https://github.com/Bodmer/TFT_eSPI/issues/3323
I'm waiting for the support because nothing shows on the display running any of the library's examples.
We need some feedback on this issue.
Now we mark this as "stale" because there was no activity here for 14 days.
Remove the "stale" label or comment else this will be closed in 7 days.
Anyway, I was able to program the board with:
#include <Arduino_GFX_Library.h>
.
So I will try to know the related issues on lvgl
if it worked with me eventually.