what to include in header and source files

[Roman_E]

I generated project with CubeIDE for Nucleo F411RE board with defaults.

Now I want to create my own function void LED_blink(int blink_num);
So, I created ledfunc.h and ledfunc.c files.
This is my ledfunc.h file:

 

#ifndef INC_LEDFUNC_H_
#define INC_LEDFUNC_H_

void LED_blink(int led_number_blink);

#endif /* INC_LEDFUNC_H_ */

and this if my ledfunc.c file:

 

void LED_blink(int led_number_blink) {
 for (int i = 0; i < led_number_blink; i++) {
 HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_SET);
 HAL_Delay(100);
 HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
 HAL_Delay(100);
 }
}

and I want to use LED_blink(2) function in main.c
( which was generated by CubeIDE )
When I try to build code, I'm getting errors LD2_GPIO_Port undefined
Yes, those defined in main.h
Where (in which file ) I need to include #include "main.h" ?
I need proper way where to add #include

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Edited to apply source code formatting - please see How to insert source code for future reference.

[Bob S]

You need to include main.h in whatever file needs those pin defines, i.e. in ledfunc.c.

[Andrew Neil]

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@Roman_E wrote:

those defined in main.h

---

If you want to use them in your ledfunc.c file, their definitions need to be available in your ledfunc.c file.

The definitions are in main.h so, as @Bob S said, you will need to #include main.h in your ledfunc.c file

 

This is standard C stuff - nothing special with ST or CubeMX or TouchGFX.

 

PS:

It's also good practice to #include your ledfunc.h header in your ledfunc.c source file - that way, the compiler can check that your LED_blink() function prototype in the .h file matches the implementation in the .c file.

See: 

https://community.st.com/t5/stm32cubeide-mcus/adding-new-c-source-files-to-my-project-and-navigating-through/m-p/658310/highlight/true#M25925

See also:

https://community.st.com/t5/stm32cubeide-mcus/adding-new-c-source-files-to-my-project-and-navigating-through/m-p/657455/highlight/true#M25847

[Roman_E]

Thanks to all for helpful replies !
Can anybody also help me with more specific place/forum to ask questions 
about coding Nucleo F411RE board pls?

[Imen.D]

Hello @Roman_E and welcome to the Community,

The STM32 MCUs Embedded software is the right place to ask your questions related to the STM32 MCUs software.