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lvgl / lv_lib_png

PNG decoder for LVGL
MIT License
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'LV_PNG_USE_LV_FILESYSTEM' is never used? #26

Closed taxue-vernon closed 2 years ago

taxue-vernon commented 3 years ago

Hello, I use the lv_lib_png have a problem. LVGL version: 8.0.1 First, I need to state steps before asking the question:

  1. I add the lv_fs_if in my project, and I am sure that it is available. Because I can load my qingtian.bin used with lv_img_set_src.
  2. Then, I add the #define LV_PNG_USE 1 #define LV_PNG_USE_LV_FILESYSTEM 1 at the end of 'lv_cong.h'.But Clion(platformio) remind #define LV_PNG_USE 1 #define LV_PNG_USE_LV_FILESYSTEM 1 is never used. neveruse
  3. Create lv_obj_img in my project.code
  4. Include and init it. init
  5. My monitor(ST7789) show "No data" in weather_imgobj, It is wrong.

So, I don`t know what happend? Where is the problem?

kisvegabor commented 3 years ago

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-vernon commented 3 years ago

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 commented 3 years ago

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

taxue-vernon commented 3 years ago

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 commented 3 years ago

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

Some questions to see what could be the problem:

taxue-vernon commented 2 years ago

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!!!

bhupiister commented 2 years ago

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-vernon commented 2 years ago

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 commented 2 years ago

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.