How can I debug a new flash algorithm which is not working yet?

You can test/debug your Flash algorithm by setting up an application that calls all of your Flash programming functions like µVision would do when you start a Flash download.

Please see the example project in C:\Keil_v5\ARM\Flash\_Template\Test and read the Abstract.txt

This application should be linked to the RAM area of your microcontroller (like a Flash algorithm would). The module FlashTest.c contains a main-function that calls all your Flash programming functions. You can debug this application in single steps or with breakpoints just like any other application. However, you need to copy your FlashDev.c and FlashPrg.c modules into this project and you need to adapt the RAM addresses according to your microcontroller. The file RAM.ini will also need to be adapted for the right RAM address.

You can test/debug your Flash algorithm by setting up an application that calls all of your Flash programming functions like µVision would do when you start a Flash download.

Please see the example project in C:\Keil_v5\ARM\Flash\_Template\Test and read the Abstract.txt

This application should be linked to the RAM area of your microcontroller (like a Flash algorithm would). The module FlashTest.c contains a main-function that calls all your Flash programming functions. You can debug this application in single steps or with breakpoints just like any other application. However, you need to copy your FlashDev.c and FlashPrg.c modules into this project and you need to adapt the RAM addresses according to your microcontroller. The file RAM.ini will also need to be adapted for the right RAM address.

https://www.keil.com/appnotes/files/apnt_333.pdf

Now I found the section, which explains how to debug the algorithm, however:

When entering debug mode, I can not step to main and not a single breakpoint will be reached.

Any recommendations how to proceed?

GS@S said:

- When trying to adapt the template for my STM32H7A3: In the target dialog I can not select this controller.

You are right, you cannot select your device easily. Just for completeness. I can explain to you how to modify such a project. This Flash Programming test project is based on our old device database and the Cortex-M7 devices are not in there. You need to first convert the project to a uVision5 project and then you can select your device from the Device Family Packs.

• - Project - Manage - Migrate to Version 5 Format
• - Open the dialog 'Options for Target' and select the tab 'Device'. Now you should be able to select your device because now you see all the devices from the Device Family Packs.

GS@S said:

- I have created the flash algorithm according tothe recommendation for STM32 Devices:

https://www.keil.com/appnotes/files/apnt_333.pdf

Glad that you found this application note. I should have recommended it to you in my first reply. It already comes close to what you need.

GS@S said:

Now I found the section, which explains how to debug the algorithm, however:

When entering debug mode, I can not step to main and not a single breakpoint will be reached.

I don't know what you see in your project. Did you follow the instructions at the top of page 10, especially did you use and adapt the DBG_RAM.ini file? Your Flash test application is linked to the RAM of your microcontroller. The CPU will not start from there unless you set the program counter to the start address of this application. After starting a debug session. the program counter should be set to the beginning of the startup code of this application. From there you can single step through the startup code or run to main().
If you can't make it work, please open a support case and attach your project. Since you have a valid license, I will try to help you.