Flash_EraseProgram example for Nucleo-G070RB hangs

[DŠibr.1]

Hello, I need to save data to the internal flash memory of my device. Naturally, I have opened the example that comes with the stm32cube for stm32g0 series. More specifically, I have compiled it for Nucelo-g070rb under System Workbench for stm32.

The example gets stuck on different places, depending on the optimization level. For no optimization, it jumps from HAL_FLASHEx_Erase to some invalid address and then halts.

For other optimization levels, it seemingly gets stuck on "BSP_LED_On(LED4);" (line 210), which should turn on when no error was detected during the process...

The debugger also runs into problems when this happens, stating the device was disconnected.

I have tried reducing the size of the erased memory to just a few pages and have also checked some of the addresses the example attempts to write to against the datasheet. It seems alright...

The code is the "FLASH_EraseProgram" example. I cannot append it due to size restrictions of this post. Here is the pastebin link. Thank you very much for your help!

[TDK]

Are you erasing flash pages in use by your program?

[DŠibr.1]

Aha! That was it! I have only tried to reduce the erased space, but it actually seems like the example is trying to erase the memory where the program is stored!

#define FLASH_USER_START_ADDR  (FLASH_BASE + (20 * FLASH_PAGE_SIZE))  /* Start @ of user Flash area */

#define FLASH_USER_END_ADDR    FLASH_BASE+(25*FLASH_PAGE_SIZE)-1//(FLASH_BASE + FLASH_SIZE - 1)  /* End @ of user Flash area */

^-- this works! There is an error in the example... Thanks for your help!