'LV_PNG_USE_LV_FILESYSTEM' is never used? about lv_lib_png

[taxue-alfred]

Emmmm, That is my personal problem!!!!! I am so sorry!!! I find i need VSPI but transfered HSPI which had used by LVGL...
Thank you answer again!!!

[kisvegabor]

Can you update to the latest lvgl version? A few weeks ago we have merged the png and file system library to lvgl to make them work better together. See https://docs.lvgl.io/master/libs/png.html

[taxue-alfred]

Can you update to the latest lvgl version? A few weeks ago we have merged the png and file system library to lvgl to make them work better together. See https://docs.lvgl.io/master/libs/png.html

emm. I try LVGL8.1.0 on ESP32 with arduino, I init the SPI.h and SD.h in fs_init() function, but it warn me [E][sd_diskio.cpp:123] sdSelectCard(): Select Failed".
So LVGL file system can not work in lvgl8.1.0 well. But LVGL8.0.2 work good(lv_lib_png can not work).
So, I think the logic changed possibly which is using Fatfs System?

[kisvegabor]

In v8.1 you can enable the file system APIs too from lv_conf.h. So you don't need lv_fs_if.

[taxue-alfred]

Yes, I know. I meant I had used the file system APIs from lv_conf.h in LVGL8.1. But it not work.
lv_fs_if can work in LVGL8.0.2.

[kisvegabor]

How do you mean "not work"? What happens exactly?

Some questions to see what could be the problem:

• Can you just open a txt file read and close it with lv_fs_... API? If not please send a code to reproduce the issue.
• How does the related part of lv_conf.h look like?
• What platform/hardware do you use?

[bhupiister]

I am having this weird problem with SD card. I am using M5 Core 2 and lv_Arduino library for lvgl graphics. My SD card is initialized properly and i can read the files. The problem occurs when i read the list the files using lvgl more than couple of times. I can see that if i keep my touch enabled on any lvgl object for long time, it troubles with my SD card module and i get this error "sdSelectCard(): Select Failed".
For example, if i keep my touch on any list for long time but do not select any option, and then try to access my Sd card. i get the above error.

One more clarification i need is, if i use
lv_obj_t *win = lv_win_create(lv_scr_act(), NULL)
Will this create an issue? and on closing the window, is it automatically destroyed?

[taxue-alfred]

I am having this weird problem with SD card. I am using M5 Core 2 and lv_Arduino library for lvgl graphics. My SD card is initialized properly and i can read the files. The problem occurs when i read the list the files using lvgl more than couple of times. I can see that if i keep my touch enabled on any lvgl object for long time, it troubles with my SD card module and i get this error "sdSelectCard(): Select Failed". For example, if i keep my touch on any list for long time but do not select any option, and then try to access my Sd card. i get the above error.

One more clarification i need is, if i use lv_obj_t *win = lv_win_create(lv_scr_act(), NULL) Will this create an issue? and on closing the window, is it automatically destroyed?

The img show normally When you use the <IMG_NAME>.bin ?

Your No.2 question I do not know. But I recommand you to delete it manually.

[bhupiister]

I am having this weird problem with SD card. I am using M5 Core 2 and lv_Arduino library for lvgl graphics. My SD card is initialized properly and i can read the files. The problem occurs when i read the list the files using lvgl more than couple of times. I can see that if i keep my touch enabled on any lvgl object for long time, it troubles with my SD card module and i get this error "sdSelectCard(): Select Failed". For example, if i keep my touch on any list for long time but do not select any option, and then try to access my Sd card. i get the above error.
One more clarification i need is, if i use lv_obj_t *win = lv_win_create(lv_scr_act(), NULL) Will this create an issue? and on closing the window, is it automatically destroyed?

The img show normally When you use the <IMG_NAME>.bin ?

Your No.2 question I do not know. But I recommand you to delete it manually.

I read more about it. It seems the issue is related to SPI bus shared by SD card module and display on M5stack core 2.