Comments (16)
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
from lvgl.
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.
from lvgl.
Try compiling this again. LVGL_Arduino-3.5CTP-gt911_2.zip
from lvgl.
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
from lvgl.
you have to copy the demos and the examples folder from ..llibraries/vgl/demos to ..libraries/lvgl/src/demos same for examples
from lvgl.
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.
from lvgl.
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 ?
from lvgl.
Where lv_indev_drv_t
is declared ? I want to run a simple sketch.
from lvgl.
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.
from lvgl.
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:
LVGL_Arduino-3.5CTP-gt911_2.zip
from lvgl.
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.
from lvgl.
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.
from lvgl.
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.
from lvgl.
I flashed the board with the binary in the folder package and it worked to its original demo code it came with:
But programming it with arduino platform doesn't work.
from lvgl.
We need some feedback on this issue.
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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.
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Related Issues (20)
- Alternative solutions for the implementation of lv_obj_is_valid() HOT 11
- toutch freeze gui HOT 6
- README has broken picture HOT 2
- Assertion on lv_obj_send_event when using lv_screen_load_anim HOT 4
- How to delete dots on a line chart HOT 1
- Draw arc not working if LV_DRAW_SDL is enabled. HOT 4
- How to use rounder_cb in LVGL9.1 HOT 3
- lv_event.c void function have a return code HOT 10
- lv_timer_handler hangs when running on separate thread on ESP32 using FREERTOS using Arduino framework HOT 20
- I think there is an issue when refreshing the display HOT 4
- Replace use of lvgl.io bootstrap in web simulator with CDN HOT 11
- Make Grids and Flex Layout Visible for Debugging HOT 6
- My SSD1619 driver not working, how to fix it? HOT 6
- Compile Error with Code Blocks 20.03 (solved) HOT 2
- Hardware Rotation in Generic MIPI Display Driver HOT 4
- documentation for msgbox needs to be updated. HOT 7
- How can I using a callback function of events handle in a class? HOT 8
- Event Sequence HOT 3
- Does 9.1 have LV_COLOR_16_SWAP HOT 4
- why there is max height short type var limit? HOT 2
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