How to Include LVGL in STM32CubeIDE?

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Hello all, I want to add LVGL in my STM32CubeIDE Project and for this I have followed all the instructions given in page :LVGL Quick Overview.

Problem observed: After copying LVGL folder and lv_conf in my project directory and than adding lvgl/lvgl.h in main.c file I get following errors:

Blockquote 23:09:30 **** Incremental Build of configuration Debug for project STM32_Graphics_Test ****
make -j12 all
arm-none-eabi-gcc -o “STM32_Graphics_Test.elf” @“objects.list” -mcpu=cortex-m4 -T"C:\Users\shrik\STM32CubeIDE\Shri_Workspsace\Stm32F407\STM32_Graphics_test\STM32_Graphics_Test\STM32F401VETX_FLASH.ld" --specs=nosys.specs -Wl,-Map=“STM32_Graphics_Test.map” -Wl,–gc-sections -static --specs=nano.specs -mfpu=fpv4-sp-d16 -mfloat-abi=hard -mthumb -Wl,–start-group -lc -lm -Wl,–end-group
c:\st\stm32cubeide_1.8.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_2.0.0.202105311346\tools\arm-none-eabi\bin\ld.exe: ./Core/Src/main.o: in function main': C:/Users/shrik/STM32CubeIDE/Shri_Workspsace/Stm32F407/STM32_Graphics_test/STM32_Graphics_Test/Debug/../Core/Src/main.c:91: undefined reference to lv_init’
collect2.exe: error: ld returned 1 exit status
make: *** [makefile:67: STM32_Graphics_Test.elf] Error 1
“make -j12 all” terminated with exit code 2. Build might be incomplete.

23:09:31 Build Failed. 3 errors, 0 warnings. (took 832ms)
Picture for reference are attached:

ide1
ide11915×1010 104 KB

location
location1913×1016 69.2 KB

Point to note that i am planning to use LVGL for KS0108 LCD using STM32F401VET(with GPIO no GPU).I have not yet added the driver. Also i have checked various combination like “lvgl/lvgl.h” than added LVGL location in the include paths too but none of these trick work.

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Hi @Shri,

It looks at first glance as if you may not have included the lvgl library in your linker settings for the project.

I don’t use the STM32CubeIDE, but the eclipse project settings should be similar for your setup see below:

Libsettings
Libsettings1024×855 42.5 KB

Hopefully this will give you a clue as to how to add the library to your linker settings for the project.

Hope that helps…

Kind Regards,

Pete

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What is the default location of the LVGL library?and what’s its extension ?.. please guide…

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Thankyou @pete-pjb My problem is now solved by merely pointing lv_conf.h in the “Include path” and in the “Paths and Symbols”…Thankyou again

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Hi @Shri,

You’re welcome (Although I wasn’t much help really :slight_smile:).

I’m very glad you got it working. :wink:

Cheers,

Pete.

6

I am also facing this error

lvgl/lvgl.h: No such file or directory|test.c|/TFT_TRY2/lvgl/tests/makefile|line 2|C/C++ Problem|

how did you solved it?

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By merely pointing lv_conf.h in the “Include path” and in the “Paths and Symbols”…

1 Like
8

My that problem is solved but now my flash is overflowing by 193Kbytes. Total flash size is 128Kb. I tried commenting out something files, code but it did not helped.