I was going through the startup code for startup_stm32f4xx and I see that __attribute__ ((used)) is used before the declaring the functions. So is the attribute applied only to Reset_Handler or to all the functions?

I found on the internet a fine string concatenating function and tried to rewrite its else scope with use of realloc as it was written with use of calloc. However, I failed. Most of the time I tried to use my version of this function the STM32 microcontroller reached HardFault_Handler. With the original code that uses calloc I had no problem like this.

I tried to find what was wrong using debugger built int STM32CubeIDE but to no avail. I don’t know if I have some memory leak or if I calculate byte sizes or lengths incorrectly. Every help and suggestion is deeply appreciated. Thank You in advance!

Good morning,

I’m developing a system with a GMS module, where AT commands are sent to the module via an STM32.
In this case, I’m having problems with the AT+CSTT command, which was giving me an ERROR. After a lot of thought, I realized that the error was due to the fact that the command was going to the module with the T for AT missing (A+CSTT).

Research on attacks exploiting stack overflow errors and prevention solutions for STM32 microcontrollers

Im struggling with my C++ project for a STM32L011 application.
I initialize the Systick timer right after the start of the main:

I want to observe the temperature in the MCU during operation. I use the formula in the manual. However, after some tests, the temperature results have a large error
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