Hi,

I am using STM32CubeIDE to build project fro STM32H753 microcontroller.

I am unaware why the STM32CubeIDE is updating the type of uint32_t to unsigned long.

I assume for a 32 bit processor uint32_t should be typed to unsigned int.

Where do I find declaration of __UINT32_TYPE__ ?

/* Sample code to report issue */

The correct way to do this is to use the format specifiers from inttypes.h ; eg, PRIx32 for uint32_t

eg,

uint32_t my_id = "1234";
sprintf( tmpstr, "Ser# %08" PRIx32 "\r\n", my_id );

https://en.wikibooks.org/wiki/C_Programming/inttypes.h

BTW: Use this button to get the code formatting:

The correct way to do this is to use the format specifiers from inttypes.h ; eg, PRIx32 for uint32_t

eg,

uint32_t my_id = "1234";
sprintf( tmpstr, "Ser# %08" PRIx32 "\r\n", my_id );

https://en.wikibooks.org/wiki/C_Programming/inttypes.h

BTW: Use this button to get the code formatting:

---

@TDK wrote:

This won't even compile.

---

It will compile, but with a warning about that initialiser:

warning: initialization of 'uint32_t' {aka 'long unsigned int'} from 'char *' makes integer from pointer without a cast [-Wint-conversion]

8)

EDIT

In addition to the OP's warning:

 warning: format '%x' expects argument of type 'unsigned int', but argument 3 has type 'uint32_t' {aka 'long unsigned int'} [-Wformat=]
   65 |         sprintf( tmpstr, "Ser# %08x\r\n", my_id );
      |                                ~~~^       ~~~~~
      |                                   |       |
      |                                   |       uint32_t {aka long unsigned int}
      |                                   unsigned int
      |                                %08lx