MX_RTC_Init undefined

[iDeew]

Hi,

I'm getting this below compile time errors...

undefined reference to `MX_RTC_Init'

However, I have included the rtc.h header file, which contains the declaration of the MX_RTC_Init(void) function.

#include "main.h"
#include "cmsis_os.h"
#include "fdcan.h"
#include "i2c.h"
#include "lwip.h"
#include "rtc.h"
#include "spi.h"
#include "usart.h"
#include "usb_device.h"
#include "app_touchgfx.h"

Why does CubeIDE still giving me this error?

Thanks

[STTwo-32]

Hello @iDeew and welcome to the ST Community :smiling_face_with_smiling_eyes:.

Could you please share your .ioc file. Also, tell me the versions of CubeMX and CubeIDE that you are using.

Best Regards.

STTwo-32 

[iDeew]

You meant .ioc file?
Pleas see attached.

CubeMX 6.11.1
CubeIDE v1.16.0

[STTwo-32]

Could you please try using the last version of CubeMX (V6.12.0).

Best Regards.

STTwo-32

[Andrew Neil]

That's a linker error - not a compiler error.

---

@iDeew wrote:

I have included the rtc.h header file, which contains the declaration of the MX_RTC_Init(void) function.

---

That's right: it contains only a declaration - not the definition.

The error message said that it's the definition that's missing.

The definition would be in the rtc.c source file - so check that's correctly included in the project ...

[iDeew]

I upgraded to v6.12.0.
But CubeIDE is giving me the exact same error. Below is the what I see in console.

make -j8 all 
arm-none-eabi-g++ "C:/mv2t/TouchGFX/gui/src/containers/RTC_Container.cpp" -mcpu=cortex-m7 -std=gnu++14 -g3 -DDEBUG -DUSE_HAL_DRIVER -DSTM32H750xx -DUSE_USB_FS -DUSE_BPP=16 -c -I../../LWIP/App -I../../TouchGFX/target -I../../USB_DEVICE/Target -I../../Middlewares/Third_Party/LwIP/src/include/compat/posix/net -I../Middlewares/Third_Party/LwIP/src/include/compat/stdc -I../../Middlewares/Third_Party/LwIP/src/include/compat/stdc -I../Middlewares/Third_Party/LwIP/system/arch -I../Middlewares/Third_Party/LwIP/src/include -I../../Middlewares/Third_Party/LwIP/system/arch -I../Middlewares/Third_Party/LwIP/src/include/lwip -I../../Middlewares/Third_Party/LwIP/system -I../../Middlewares/Third_Party/LwIP/src/include -I../Middlewares/Third_Party/FreeRTOS/Source/include -I../../Drivers/CMSIS/Include -I../USB_DEVICE/Target -I../Middlewares/Third_Party/LwIP/src/include/lwip/priv -I../../Middlewares/Third_Party/LwIP/src/include/lwip/priv -I../../LWIP/Target -I../Drivers/STM32H7xx_HAL_Driver/Inc/Legacy -I../../Middlewares/Third_Party/LwIP/src/include/lwip -I../Middlewares/Third_Party/LwIP/src/include/compat/posix/sys -I../../Middlewares/Third_Party/LwIP/src/include/compat/posix -I../../Drivers/BSP/Components/lan8742 -I../Utilities/JPEG -I../Drivers/CMSIS/Include -I../../Middlewares/Third_Party/LwIP/src/include/compat/posix/sys -I../../Middlewares/Third_Party/FreeRTOS/Source/portable/GCC/ARM_CM4F -I../TouchGFX/App -I../../Middlewares/Third_Party/LwIP/src/include/netif -I../../Middlewares/Third_Party/LwIP/src/include/compat/posix/arpa -I../Middlewares/Third_Party/LwIP/src/include/netif -I../../Core/Inc -I../Middlewares/Third_Party/LwIP/src/include/netif/ppp -I../../Middlewares/Third_Party/LwIP/src/include/netif/ppp -I../../Middlewares/Third_Party/FreeRTOS/Source/CMSIS_RTOS_V2 -I../Middlewares/Third_Party/FreeRTOS/Source/CMSIS_RTOS_V2 -I../Middlewares/ST/STM32_USB_Device_Library/Core/Inc -I../../Drivers/STM32H7xx_HAL_Driver/Inc -I../Middlewares/Third_Party/FreeRTOS/Source/portable/GCC/ARM_CM4F -I../LWIP/App -I../Middlewares/Third_Party/LwIP/src/include/compat/posix -I../../Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc -I../Drivers/CMSIS/Device/ST/STM32H7xx/Include -I../../Drivers/STM32H7xx_HAL_Driver/Inc/Legacy -I../Middlewares/Third_Party/LwIP/src/include/compat/posix/arpa -I../Middlewares/Third_Party/LwIP/system -I../../USB_DEVICE/App -I../../TouchGFX/App -I../../Middlewares/Third_Party/LwIP/src/include/lwip/apps -I../../Middlewares/Third_Party/FreeRTOS/Source/CMSIS_RTOS -I../Middlewares/Third_Party/LwIP/src/include/lwip/prot -I../../TouchGFX/target/generated -I../../Middlewares/Third_Party/LwIP/src/include/lwip/prot -I../Middlewares/Third_Party/LwIP/src/include/lwip/apps -I../TouchGFX/target/generated -I../../Drivers/CMSIS/Device/ST/STM32H7xx/Include -I../../Middlewares/ST/STM32_USB_Device_Library/Core/Inc -I../Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc -I../USB_DEVICE/App -I../../Middlewares/Third_Party/FreeRTOS/Source/include -I../LWIP/Target -I../Middlewares/Third_Party/LwIP/src/include/compat/posix/net -I../TouchGFX/target -I../Drivers/STM32H7xx_HAL_Driver/Inc -I../../Drivers/Vendor/Board/SE21159/Config -I../../Drivers/Vendor/Device -I../../Drivers/Vendor/Driver -I../../ETHERNET_IF/App/tcpecho -I../../ETHERNET_IF/Target -I../../Middlewares/ST/touchgfx/framework/include -I../../TouchGFX/generated/fonts/include -I../../TouchGFX/generated/gui_generated/include -I../../TouchGFX/generated/images/include -I../../TouchGFX/generated/texts/include -I../../TouchGFX/generated/videos/include -I../../TouchGFX/gui/include -O0 -ffunction-sections -fdata-sections -fno-exceptions -fno-rtti -fno-use-cxa-atexit -Wall -femit-class-debug-always -fstack-usage -fcyclomatic-complexity -MMD -MP -MF"Application/User/gui/RTC_Container.d" -MT"Application/User/gui/RTC_Container.o" --specs=standard_c_nano_cpp.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -o "Application/User/gui/RTC_Container.o"
arm-none-eabi-g++ -o "EVK101009A.elf" @"objects.list"  -l:libtouchgfx-float-abi-hard.a -mcpu=cortex-m7 -T"C:\mv2t\STM32CubeIDE\STM32H750_FLASH.ld" --specs=nosys.specs -Wl,-Map="EVK101009A.map" -Wl,--gc-sections -static -L../../Middlewares/ST/touchgfx/lib/core/cortex_m7/gcc --specs=standard_c_nano_cpp.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -Wl,--start-group -lc -lm -lstdc++ -lsupc++ -Wl,--end-group
C:/ST/STM32CubeIDE_1.16.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.win32_1.0.200.202406191623/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld.exe: ./Application/User/Core/main.o: in function `main':
C:/mv2t/Core/Src/main.c:119: undefined reference to `MX_RTC_Init'
C:/ST/STM32CubeIDE_1.16.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.win32_1.0.200.202406191623/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld.exe: ./Application/User/gui/RTC_Container.o: in function `RTC_Container::RTC_TimeShow()':
C:/mv2t/TouchGFX/gui/src/containers/RTC_Container.cpp:31: undefined reference to `HAL_RTC_GetTime'
C:/ST/STM32CubeIDE_1.16.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.win32_1.0.200.202406191623/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/mv2t/TouchGFX/gui/src/containers/RTC_Container.cpp:35: undefined reference to `hrtc'
C:/ST/STM32CubeIDE_1.16.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.win32_1.0.200.202406191623/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld.exe: ./Application/User/gui/RTC_Date.o: in function `RTC_Date::RTC_TimeShow()':
C:/mv2t/TouchGFX/gui/src/containers/RTC_Date.cpp:23: undefined reference to `HAL_RTC_GetDate'
C:/ST/STM32CubeIDE_1.16.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.win32_1.0.200.202406191623/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/mv2t/TouchGFX/gui/src/containers/RTC_Date.cpp:26: undefined reference to `hrtc'
collect2.exe: error: ld returned 1 exit status
make: *** [makefile:108: EVK101009A.elf] Error 1
"make -j8 all" terminated with exit code 2. Build might be incomplete.

01:11:55 Build Failed. 6 errors, 0 warnings. (took 7s.582ms)

Thanks

[iDeew]

Yes, you are correct. It is a Linker error.
Any idea why I'm getting it?

Thanks

[STTwo-32]

If you still have the same error. Can you send you project here. 

Best Regards.

STTwo-32

[Andrew Neil]

---

@iDeew wrote:

Any idea why I'm getting it?

---

Because the rtc.c source file - which contains the definition - isn't being built and/or isn't being linked.

Is it present in your Project?

As @STTwo-32 said, you could attach the Project...

[Christian N]

This post has been escalated to the ST Online Support Team for additional assistance. We'll contact you directly.