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How to run code on STM32H7 (for beginners)?

DHMarinov
Associate II

Hello there,

Recently I bought the STM32H747 DISCO as I want to start working with microscontrollers. I've been working with FPGAs for a couple of years so I have general understanding of how things work. Howerver, the question I have is very basic - how do you run the code on the platform?

So far I have a blinking LED application, which builds with no errors, but when it comes to running the code i get some issues. I connect the eval board to CN2 and the demo application flashed on the boaard starts to run. When I try to run my application (from the CubeIDE) the demo application restarts and in the Cude I get the following message:

That's it, nothing happens afterwars, the board simply resets. I suspect there may be something specific when it comes to running single core applications on dual core chip, or maybe I am running the application incorectly in some way.

Do you have any ideas what am I doing wrong?

Help is much appreciated :)

------------------------------------------------------------------------------------------------------------------------------------

Waiting for debugger connection...

Debugger connected

   -------------------------------------------------------------------

            STM32CubeProgrammer v2.4.0          

   -------------------------------------------------------------------

ST-LINK error (DEV_CONNECT_ERR)

ST-Link Server is running on port : 7184

ST-LINK SN : 002F001F3137511439383538

ST-LINK FW : V3J6M2

Voltage   : 3.26V

SWD freq  : 24000 KHz

Connect mode: Under Reset

Reset mode : Hardware reset

Device ID  : 0x450

Device name : STM32H7xx

Flash size : 2 MBytes (default)

Device type : MCU

Device CPU : Cortex-M7/M4

Memory Programming ...

Opening and parsing file: ST-LINK_GDB_server_a23832.srec

 File     : ST-LINK_GDB_server_a23832.srec

 Size     : 1864 Bytes

 Address    : 0x08100000 

Erasing memory corresponding to segment 0:

Erasing internal memory sector 8

Download in Progress:

File download complete

Time elapsed during download operation: 00:00:01.151

Verifying ...

Download verified successfully 

Debugger connection lost.

Shutting down...

-------------------------------------------------------------------------------------------------------------------------------------

--------------------------------------------------------------------------------------------------------------------------------------

Code:

static unsigned short pin_state = 0;

while(1){

pin_state = !pin_state;

HAL_GPIO_WritePin(LED2_GPIO_Port, LED2_Pin, pin_state);

HAL_Delay(500);

}

3 REPLIES 3

I'd probably build for the CM7 core, and have the code build for the FLASH base address of 0x08000000

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DHMarinov
Associate II

Thanks for the suggestion, I tried it and it the demo that was running on the board stopped, but I didn't see any LED blinking :D.

I will further look into it.

DHMarinov
Associate II

Problem solved, idk how, but it works :D. I enabled the DEBUG option in the CubeMX and set it to serial. Not sure if this solved the problem, but now it works :D