Any way to use the latest LVGL to replace the built-in LVGL? #62742

weiyshay · 2023-09-16T16:02:19Z

weiyshay
Sep 16, 2023

Hi,
New to zephyr and it seems there is a built-in lvgl including some basic support in the project. Is there any way to replace it with LVGL official repo? or link it to the repo to get rich feature in case the two work together?

I am playing with an ST7735r display and it works on the lvgl sample to display a 'hello world!' in the subsys/display directory.

Next I am trying to explore more feature on LVGL repo.

weiyshay · 2023-09-16T16:22:00Z

weiyshay
Sep 16, 2023
Author

Sorry for misunderstanding and it seems that the lvgl is included in the '../modules' directory.

Is there any way to build & run the demo/examples in lvgl directly?

4 replies

faxe1008 Sep 16, 2023
Collaborator

Hi,
Yes you can, the various demos do have README where it is explained: https://github.com/lvgl/lvgl/tree/master/demos/music
Essentially add a define and add the files of the demo.

kartben Sep 16, 2023
Collaborator

Btw I think it would be great if someone could tackle what was originally in zephyrproject-rtos/lvgl#38

faxe1008 Sep 16, 2023
Collaborator

Sure, would make testing/showcasing easier I guess :^), will create an issue for it.

faxe1008 Sep 16, 2023
Collaborator

Created #62744, any PRs welcome. Otherwise I'll start work on this next week.

weiyshay · 2023-09-17T10:31:14Z

weiyshay
Sep 17, 2023
Author

Hi, Yes you can, the various demos do have README where it is explained: https://github.com/lvgl/lvgl/tree/master/demos/music Essentially add a define and add the files of the demo.

Hi faxe1008,
Thank you very much here again! :)

I read the README/doc in lvgl and tried to include the example header file but it is not located correctly,
which seems to be the zephyr only includes the lvgl 'src' directory and skipped the 'demos', any tip on how I can add an option? I checked around and have not find any makefile/cmake option.

Diff:

diff --git a/samples/subsys/display/lvgl/src/main.c b/samples/subsys/display/lvgl/src/main.c
index a4dc312b9f..0368f7b96b 100644
--- a/samples/subsys/display/lvgl/src/main.c
+++ b/samples/subsys/display/lvgl/src/main.c
@@ -12,6 +12,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <zephyr/kernel.h>
+#include "demos/lv_demos.h"
 
 #define LOG_LEVEL CONFIG_LOG_DEFAULT_LEVEL
 #include <zephyr/logging/log.h>

Error message:

/src/esp32c3/zephyr-westbuild/zephyr/samples/subsys/display/lvgl-wei/src/main.c:15:10: fatal error: demos/lv_demos.h: No such file or directory
   15 | #include "lvgl/demos/lv_demos.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~~

Include option:
-I/src/esp32c3/zephyr-westbuild/modules/lib/gui/lvgl/src
-I/src/esp32c3/zephyr-westbuild/zephyr/modules/lvgl/.

cc command:

ccache
/opt/zephyr-sdk-0.16.1/riscv64-zephyr-elf/bin/riscv64-zephyr-elf-gcc
-DCONFIG_SPI_FLASH_ROM_DRIVER_PATCH
-DCONFIG_SPI_FLASH_USE_LEGACY_IMPL
-DESP_PLATFORM
-DKERNEL
-DLV_CONF_INCLUDE_SIMPLE=1
-DLV_CONF_PATH=/src/esp32c3/zephyr-westbuild/zephyr/modules/lvgl/lv_conf.h
-D__ZEPHYR__=1
-I/src/esp32c3/zephyr-westbuild/zephyr/include
-I/src/esp32c3/zephyr-westbuild/zephyr/build/zephyr/include/generated
-I/src/esp32c3/zephyr-westbuild/zephyr/soc/riscv/espressif_esp32/esp32c3
-I/src/esp32c3/zephyr-westbuild/zephyr/lib/posix/getopt/.
-I/src/esp32c3/zephyr-westbuild/modules/lib/acpica/../../zephyr/include
-I/src/esp32c3/zephyr-westbuild/modules/lib/acpica/..
-I/src/esp32c3/zephyr-westbuild/modules/lib/acpica/source/include
-I/src/esp32c3/zephyr-westbuild/modules/lib/acpica/source/include/platform
-I/src/esp32c3/zephyr-westbuild/modules/lib/acpica/source/compiler
-I/src/esp32c3/zephyr-westbuild/modules/lib/acpica/generate/zephyr
-I/src/esp32c3/zephyr-westbuild/modules/lib/acpica/source/tools/acpiexec
-I/src/esp32c3/zephyr-westbuild/modules/lib/acpica/source/tools/acpidump
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/include/bt
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/include/wifi
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/include/crypto
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../esp_shared/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../esp_shared/include/wifi
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../esp_shared/components/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_common/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_pm/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_rom/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_rom/include/esp32c3
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_rom/include/esp32c3/rom
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp32c3/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_hw_support/port/esp32c3/private_include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_hw_support/port/esp32c3
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_hw_support/include/soc
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_hw_support/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_system/port/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_system/port/public_compat
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/riscv/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/hal/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/hal/esp32c3/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/hal/platform_port/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/soc/esp32c3/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/soc/esp32c3/include/soc
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/soc/src/esp32c3/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/soc/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/driver/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/driver/esp32c3/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/efuse/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/efuse/private_include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/efuse/esp32c3/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/efuse/esp32c3/private_include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_system/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_event/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_timer/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_timer/private_include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_netif/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/log/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/spi_flash/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/spi_flash/include/spi_flash
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/spi_flash/private_include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/bootloader_support/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/bootloader_support/include_bootloader
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_wifi/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_wifi/esp32c3/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_phy/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_phy/include/esp32c3
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/esp_phy/esp32c3/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/wpa_supplicant/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/wpa_supplicant/port/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/wpa_supplicant/src
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/wpa_supplicant/include/esp_supplicant
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/wpa_supplicant/src/crypto
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/wpa_supplicant/esp_supplicant/src
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/wpa_supplicant/esp_supplicant/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/wpa_supplicant/src/utils
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/wpa_supplicant/src/eap_peer
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/heap/include
-I/src/esp32c3/zephyr-westbuild/modules/hal/espressif/zephyr/esp32c3/../../components/mbedtls/port/include
-I/src/esp32c3/zephyr-westbuild/modules/lib/gui/lvgl/src
-I/src/esp32c3/zephyr-westbuild/zephyr/modules/lvgl/.
-isystem
/src/esp32c3/zephyr-westbuild/zephyr/lib/libc/minimal/include
-fno-strict-aliasing
-Os
-imacros
/src/esp32c3/zephyr-westbuild/zephyr/build/zephyr/include/generated/autoconf.h
-ffreestanding
-fno-common
-g
-gdwarf-4
-fdiagnostics-color=always
-mabi=ilp32
-march=rv32imc_zicsr
--sysroot=/opt/zephyr-sdk-0.16.1/riscv64-zephyr-elf/riscv64-zephyr-elf
-imacros
/src/esp32c3/zephyr-westbuild/zephyr/include/zephyr/toolchain/zephyr_stdint.h
-Wall
-Wformat
-Wformat-security
-Wno-format-zero-length
-Wno-pointer-sign
-Wpointer-arith
-Wexpansion-to-defined
-Wno-unused-but-set-variable
-Werror=implicit-int
-fno-pic
-fno-pie
-fno-asynchronous-unwind-tables
-fno-reorder-functions
--param=min-pagesize=0
-fno-defer-pop
-fmacro-prefix-map=/src/esp32c3/zephyr-westbuild/zephyr/samples/subsys/display/lvgl=CMAKE_SOURCE_DIR
-fmacro-prefix-map=/src/esp32c3/zephyr-westbuild/zephyr=ZEPHYR_BASE
-fmacro-prefix-map=/src/esp32c3/zephyr-westbuild=WEST_TOPDIR
-ffunction-sections
-fdata-sections
-D_POSIX_THREADS
-Wno-unused-variable
-Wno-maybe-uninitialized
-std=c99
-MD
-MT
CMakeFiles/app.dir/src/main.c.obj
-MF
CMakeFiles/app.dir/src/main.c.obj.d
-o
CMakeFiles/app.dir/src/main.c.obj
-c
/src/esp32c3/zephyr-westbuild/zephyr/samples/subsys/display/lvgl/src/main.c

1 reply

kartben Sep 17, 2023
Collaborator

The CMakeLists.txt from the aforementioned PR should help you with this -- zephyrproject-rtos/lvgl#38

weiyshay · 2023-09-17T13:10:17Z

weiyshay
Sep 17, 2023
Author

Hi Kartben,
Thank you very much! It helps despiting the CMakeList.txt in the lvgl directory in recent master.

I have compiled and flashed it while the screen not showing the music demo as expected.
It remains the 'Hello world!' but the 'count' is not updating every second which seems like showing the buffer
stored in the chip in the previous flash.

Any idea on how to debug?

My diff:

diff --git a/modules/lvgl/CMakeLists.txt b/modules/lvgl/CMakeLists.txt
index 8aa9979441..940415f130 100644
--- a/modules/lvgl/CMakeLists.txt
+++ b/modules/lvgl/CMakeLists.txt
@@ -13,6 +13,31 @@ zephyr_interface_library_named(LVGL)
 zephyr_library()
 
 zephyr_include_directories(${LVGL_DIR}/src/)
+zephyr_include_directories_ifdef(CONFIG_LV_USE_DEMO_BENCHMARK 
+    ${LVGL_DIR}/demos/
+    ${LVGL_DIR}/demos/benchmark
+)
+
+zephyr_include_directories_ifdef(CONFIG_LV_USE_DEMO_KEYPAD_AND_ENCODER
+    ${LVGL_DIR}/demos/
+    ${LVGL_DIR}/demos/keypad_encoder
+)
+
+zephyr_include_directories_ifdef(CONFIG_LV_USE_DEMO_MUSIC
+    ${LVGL_DIR}/demos/
+    ${LVGL_DIR}/demos/music
+)
+
+zephyr_include_directories_ifdef(CONFIG_LV_USE_DEMO_STRESS
+    ${LVGL_DIR}/demos/
+    ${LVGL_DIR}/demos/stress
+)
+
+zephyr_include_directories_ifdef(CONFIG_LV_USE_DEMO_WIDGETS
+    ${LVGL_DIR}/demos/
+    ${LVGL_DIR}/demos/widgets
+)
+
 zephyr_include_directories(.)
 
 zephyr_compile_definitions(LV_CONF_INCLUDE_SIMPLE=1)
@@ -219,6 +244,75 @@ zephyr_library_sources(
     lvgl_display_mono.c
 )
 
+zephyr_library_sources_ifdef(CONFIG_LV_USE_DEMO_KEYPAD_AND_ENCODER
+    ${LVGL_DIR}/demos/keypad_encoder/lv_demo_keypad_encoder.c
+)
+
+zephyr_library_sources_ifdef(CONFIG_LV_USE_DEMO_MUSIC
+    ${LVGL_DIR}/demos/music/lv_demo_music_list.c
+    ${LVGL_DIR}/demos/music/lv_demo_music_main.c
+    ${LVGL_DIR}/demos/music/lv_demo_music.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_corner_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_list_pause.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_list_pause_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_list_play.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_list_play_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_loop.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_loop_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_next.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_next_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_pause.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_pause_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_play.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_play_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_prev.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_prev_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_rnd.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_btn_rnd_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_corner_left.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_corner_left_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_corner_right.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_corner_right_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_cover_1.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_cover_1_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_cover_2.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_cover_2_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_cover_3.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_cover_3_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_icon_1.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_icon_1_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_icon_2.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_icon_2_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_icon_3.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_icon_3_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_icon_4.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_icon_4_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_list_border.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_list_border_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_logo.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_slider_knob.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_slider_knob_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_wave_bottom.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_wave_bottom_large.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_wave_top.c
+    ${LVGL_DIR}/demos/music/assets/img_lv_demo_music_wave_top_large.c
+)
+
+zephyr_library_sources_ifdef(CONFIG_LV_USE_DEMO_STRESS
+    ${LVGL_DIR}/demos/stress/lv_demo_stress.c
+    ${LVGL_DIR}/demos/stress/assets/lv_font_montserrat_12_compr_az.c
+    ${LVGL_DIR}/demos/stress/assets/lv_font_montserrat_16_compr_az.c
+    ${LVGL_DIR}/demos/stress/assets/lv_font_montserrat_28_compr_az.c
+)
+
+zephyr_library_sources_ifdef(CONFIG_LV_USE_DEMO_WIDGETS
+    ${LVGL_DIR}/demos/widgets/lv_demo_widgets.c
+    ${LVGL_DIR}/demos/widgets/assets/img_clothes.c
+    ${LVGL_DIR}/demos/widgets/assets/img_demo_widgets_avatar.c
+    ${LVGL_DIR}/demos/widgets/assets/img_lvgl_logo.c
+    ${LVGL_DIR}/demos/widgets/assets/img_clothes.c
+)
+
 zephyr_library_sources_ifdef(CONFIG_LV_Z_USE_FILESYSTEM lvgl_fs.c)
 zephyr_library_sources_ifdef(CONFIG_LV_Z_MEM_POOL_SYS_HEAP lvgl_mem.c)
 zephyr_library_sources_ifdef(CONFIG_LV_Z_SHELL      lvgl_shell.c)
diff --git a/modules/lvgl/lv_conf.h b/modules/lvgl/lv_conf.h
index 20e60058ae..303776767b 100644
--- a/modules/lvgl/lv_conf.h
+++ b/modules/lvgl/lv_conf.h
@@ -47,4 +47,6 @@
  */
 #define LV_CONF_SUPPRESS_DEFINE_CHECK 1
 
+#define LV_USE_DEMO_MUSIC 1
+
 #endif /* ZEPHYR_MODULES_LVGL_LV_CONF_H_ */
diff --git a/samples/subsys/display/lvgl/src/main.c b/samples/subsys/display/lvgl/src/main.c
index a4dc312b9f..ebc562c1c6 100644
--- a/samples/subsys/display/lvgl/src/main.c
+++ b/samples/subsys/display/lvgl/src/main.c
@@ -12,6 +12,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <zephyr/kernel.h>
+#include "lv_demos.h"
 
 #define LOG_LEVEL CONFIG_LOG_DEFAULT_LEVEL
 #include <zephyr/logging/log.h>
@@ -77,32 +78,34 @@ int main(void)
 	}
 #endif
 
-	if (IS_ENABLED(CONFIG_LV_Z_POINTER_KSCAN)) {
-		lv_obj_t *hello_world_button;
-
-		hello_world_button = lv_btn_create(lv_scr_act());
-		lv_obj_align(hello_world_button, LV_ALIGN_CENTER, 0, 0);
-		hello_world_label = lv_label_create(hello_world_button);
-	} else {
-		hello_world_label = lv_label_create(lv_scr_act());
-	}
-
-	lv_label_set_text(hello_world_label, "Hello world!");
-	lv_obj_align(hello_world_label, LV_ALIGN_CENTER, 0, 0);
-
-	count_label = lv_label_create(lv_scr_act());
-	lv_obj_align(count_label, LV_ALIGN_BOTTOM_MID, 0, 0);
-
-	lv_task_handler();
-	display_blanking_off(display_dev);
-
-	while (1) {
-		if ((count % 100) == 0U) {
-			sprintf(count_str, "%d", count/100U);
-			lv_label_set_text(count_label, count_str);
-		}
-		lv_task_handler();
-		++count;
-		k_sleep(K_MSEC(10));
-	}
+	lv_init();
+	lv_demo_music();
+	// if (IS_ENABLED(CONFIG_LV_Z_POINTER_KSCAN)) {
+	// 	lv_obj_t *hello_world_button;
+	//
+	// 	hello_world_button = lv_btn_create(lv_scr_act());
+	// 	lv_obj_align(hello_world_button, LV_ALIGN_CENTER, 0, 0);
+	// 	hello_world_label = lv_label_create(hello_world_button);
+	// } else {
+	// 	hello_world_label = lv_label_create(lv_scr_act());
+	// }
+	//
+	// lv_label_set_text(hello_world_label, "Hello world!");
+	// lv_obj_align(hello_world_label, LV_ALIGN_CENTER, 0, 0);
+	//
+	// count_label = lv_label_create(lv_scr_act());
+	// lv_obj_align(count_label, LV_ALIGN_BOTTOM_MID, 0, 0);
+	//
+	// lv_task_handler();
+	// display_blanking_off(display_dev);
+	//
+	// while (1) {
+	// 	if ((count % 100) == 0U) {
+	// 		sprintf(count_str, "%d", count/100U);
+	// 		lv_label_set_text(count_label, count_str);
+	// 	}
+	// 	lv_task_handler();
+	// 	++count;
+	// 	k_sleep(K_MSEC(10));
+	// }
 }

2 replies

faxe1008 Sep 17, 2023
Collaborator

The methods for the demos still need the event loop that you need to pump via the taskhandler.

faxe1008 Sep 17, 2023
Collaborator

Also the includes of the various demo folders are not needed. You only need to care about the source files.

faxe1008 · 2023-09-21T08:23:20Z

faxe1008
Sep 21, 2023
Collaborator

Heyhey,

Placed a PR which adds a sample to build most of the demos here:
#62904

0 replies

weiyshay · 2023-09-24T16:38:30Z

weiyshay
Sep 24, 2023
Author

The methods for the demos still need the event loop that you need to pump via the taskhandler.
Thank you for your comment.

I have successfully run the 'keypad' demo w/ or w/o the task handler, while failed to run 'music' and 'widgets' demos. My flash is 4MB and I am suspecting the resolution on my display is not enough to run them.

Any idea on how to debug?

My code:

3 replies

weiyshay Sep 24, 2023
Author

It seems that the memory on the chip is not enough to run the demo.

uart:~$ font_normal: 1006665008, disp_size: 0

*** Booting Zephyr OS build zephyr-v3.4.0-2545-g3a76e6040abf ***
[00:00:00.249,000] <wrn> lvgl:  (0.249, +249)    lv_demo_widgets: LV_FONT_MONTSERRAT_18 is not enabled for the widgets demo. Using LV_FONT_DEFAULT instead.     (in lv_demo_widgets.c line #139)

[00:00:00.441,000] <err> lvgl: (0.441, +192)     lv_mem_realloc: couldn't allocate memory       (in lv_mem.c line #211)

[00:00:00.441,000] <err> os: 
[00:00:00.441,000] <err> os:  mcause: 7, Store/AMO access fault
[00:00:00.441,000] <err> os:   mtval: 0
[00:00:00.441,000] <err> os:      a0: 00000000    t0: 00000005
[00:00:00.441,000] <err> os:      a1: 00000000    t1: 00000008
[00:00:00.441,000] <err> os:      a2: 00000008    t2: 00000001
[00:00:00.441,000] <err> os:      a3: 00000008    t3: 00000025
[00:00:00.441,000] <err> os:      a4: 00000000    t4: 00000023
[00:00:00.441,000] <err> os:      a5: 00000000    t5: 0000000e
[00:00:00.442,000] <err> os:      a6: 00000000    t6: 00000000
[00:00:00.442,000] <err> os:      a7: 00000003
[00:00:00.442,000] <err> os:      ra: 42041c10
[00:00:00.442,000] <err> os:    mepc: 4038468a
[00:00:00.442,000] <err> os: mstatus: 00001880
[00:00:00.442,000] <err> os: 
[00:00:00.442,000] <err> os: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0
[00:00:00.442,000] <err> os: Current thread: 0x3fc89190 (main)
[00:00:00.620,000] <err> os: Halting system

btw, datasheet of st7735r says it is 132*162 while 240 * 240 by my screen vendor which is bigger than the chip. Is this correct?

faxe1008 Sep 24, 2023
Collaborator

I have successfully run the 'keypad' demo w/ or w/o the task handler, while failed to run 'music' and 'widgets' demos.

You will need the loop for anything to happen - otherwise nothing will really happen apart from the initial render. With 16 bit color depth per pixel you will need:

240*240*2=115200 bytes = 112kb

So you should be good there. Also your log clearly states the issue:

[00:00:00.249,000] <wrn> lvgl:  (0.249, +249)    lv_demo_widgets: LV_FONT_MONTSERRAT_18 is not enabled for the widgets demo. Using LV_FONT_DEFAULT instead.     (in lv_demo_widgets.c line #139)

[00:00:00.441,000] <err> lvgl: (0.441, +192)     lv_mem_realloc: couldn't allocate memory       (in lv_mem.c line #211)

Make sure that CONFIG_LV_FONT_MONTSERRAT_18=y is set. Also, CONFIG_LV_Z_MEM_POOL_SYS_HEAP=y and play around with LV_Z_MEM_POOL_MAX_SIZE.

weiyshay Sep 24, 2023
Author

Nice to know and thank you very much!

Any way to use the latest LVGL to replace the built-in LVGL? #62742

Uh oh!

Uh oh!

weiyshay Sep 16, 2023

Replies: 5 comments · 10 replies

Uh oh!

weiyshay Sep 16, 2023 Author

Uh oh!

faxe1008 Sep 16, 2023 Collaborator

Uh oh!

Uh oh!

kartben Sep 16, 2023 Collaborator

Uh oh!

faxe1008 Sep 16, 2023 Collaborator

Uh oh!

faxe1008 Sep 16, 2023 Collaborator

Uh oh!

weiyshay Sep 17, 2023 Author

Uh oh!

kartben Sep 17, 2023 Collaborator

Uh oh!

Uh oh!

weiyshay Sep 17, 2023 Author

Uh oh!

faxe1008 Sep 17, 2023 Collaborator

Uh oh!

faxe1008 Sep 17, 2023 Collaborator

Uh oh!

faxe1008 Sep 21, 2023 Collaborator

Uh oh!

Uh oh!

weiyshay Sep 24, 2023 Author

Uh oh!

Uh oh!

weiyshay Sep 24, 2023 Author

Uh oh!

faxe1008 Sep 24, 2023 Collaborator

Uh oh!

weiyshay Sep 24, 2023 Author

weiyshay
Sep 16, 2023

Replies: 5 comments 10 replies

weiyshay
Sep 16, 2023
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faxe1008 Sep 16, 2023
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kartben Sep 16, 2023
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faxe1008 Sep 16, 2023
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faxe1008 Sep 16, 2023
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weiyshay
Sep 17, 2023
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kartben Sep 17, 2023
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weiyshay
Sep 17, 2023
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faxe1008 Sep 17, 2023
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faxe1008 Sep 17, 2023
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faxe1008
Sep 21, 2023
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weiyshay
Sep 24, 2023
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weiyshay Sep 24, 2023
Author

faxe1008 Sep 24, 2023
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weiyshay Sep 24, 2023
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