H745ZI-Q unable to load a different program then demo

[flyingchris]

Hi,

recently I switched from Arduino to Nucleo and now I wanted to play around with the H745ZI-Q and was following the step by step guide by st. Whenever I try to load a program to the mcu, only the demo blinky program is running. I have not found any advice in the user manual. Is there something I'm missing?

I use the CN1 USB Connector to connect to my PC and Putty works fine to get data. It's just that any program I try to load to the board does not change anything about the demo thats just keeps running.

Thanks for any advice.

[Tesla DeLorean]

If you download the into the flash for the CM7 core it should run that.

Attached is a not-the-demo .HEX file that can be written with STM32 Cube Programmer applications, and outputs via the VCP at 115200 8N1

[flyingchris]

I'm sorry but this went straight over my head. I'm currently using the CubeIDE. I guess I can't use the CubeIDE to load a new program onto the board but have to use the Cube Programmer you suggested? I'm asking because the online tutorials I saw regarding the 64pin boards just used the IDE and the Programmer was not suggested in the official ST educational examples.

[Tesla DeLorean]

I don't use CubeIDE and OpenOCD tools. Keil is certainly capable of flashing code directly after compilation.

You should be able to download-and-run.

The use of STM32 Cube Programmer was suggested as a way of confirming things could actually be downloaded properly, and would run different code.

It could perhaps be a problem that you're not replacing the software for both cores, but only one.

[flyingchris]

So I tested one of the ways to disable one of the cores. I disabled the boot of the CM7 core with cubeProgrammer. However now I cant connect to the board and get a fail.txt. The usual fix with STM32 ST-Link Utility also does not work. Any ideas?