How generate hex file without link files Hal_drivers

[Fredolive]

Hello,

When I builed the project, I had seen the Hal drivers files links in the end file *.HEX.

How can I change the project configuration not to put this links in file because it use flash memory unnecessarily ?

Thanks 

[Andrew Neil]

What optimisation level are you using?

By default, 'discard unused sections' should be enabled - so unused functions shouldn't appear in the final image.

[Fredolive]

Hi Andrew,

I have -O1 optimisation and your configuration setting.

I give an example of my end Hex file :

0x8005FD0 ........../Drivers/STM32G4xx_Hal_Driver/Src/stm32g4xx_hal_wwdg.c .....

This link in hex file isn't necessarily...

[Andrew Neil]

---

@Fredolive wrote:

I give an example of my end Hex file :

0x8005FD0 ........../Drivers/STM32G4xx_Hal_Driver/Src/stm32g4xx_hal_wwdg.c .....

---

You mean your ELF file? The Hex file wouldn't have any symbol information...

[Fredolive]

I have this links in Hex file

[Andrew Neil]

How do you determine that they are actually in the Hex file?

Again, the Hex file contains no symbol information - it is purely code - so where are you seeing that?

[Fredolive]

This is my hex file for my application.

You look the links file at the end file Hex

[Andrew Neil]

Do you use __FILE__ in your code? Also __LINE__ ?

EDIT:

They would appear if you define USE_FULL_ASSERT:

/* Exported macro ------------------------------------------------------------*/
#ifdef  USE_FULL_ASSERT
/**
  * @brief  The assert_param macro is used for function's parameters check.
  *   expr If expr is false, it calls assert_failed function
  *         which reports the name of the source file and the source
  *         line number of the call that failed.
  *         If expr is true, it returns no value.
  * @retval None
  */
  #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
/* Exported functions ------------------------------------------------------- */
  void assert_failed(uint8_t* file, uint32_t line);
#else
  #define assert_param(expr) ((void)0U)
#endif /* USE_FULL_ASSERT */

EDIT 2:

If you do want the ASSERT output, but still want to save a little Flash space, you could use __FILE_NAME__

https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html#:~:text=__FILE_NAME__,myheader.h%22.

[Fredolive]

I tried with adn without __FILE__NAME but I have always roots files in flash space.

[Andrew Neil]

Then you must have other uses of __FILE_NAME__ elsewhere in your code.

Do a grep through your entire codebase.