Installing STM32 Cores

1- Launch Arduino IDE. Click on "File" menu and then "Preferences".

The "Preferences" dialog will open, then add the following link to the "Additional Boards Managers URLs" field:

Click "Ok"

2- Click on "Tools" menu and then "Boards > Boards Manager"

The board manager will open and you will see a list of installed and available boards.

Select "Contributed" type.

Select the "STM32 Cores" and click on install. After installation is complete an "INSTALLED" tag appears next to the core name.

You can close the Board Manager.

3- To upload through SWD (STLink), Serial or DFU, STM32CubeProgrammer needs to be installed.

Now you can find the STM32 boards package in the "Board" menu.

4- Select the desired boards series: Rumba32

5- Setting all option in this mode

Upload process:

1- Press and hold RUMBA32 BOOT button.

2- Press and release RUMBA32 RESET button.

3- Release RUMBA32 BOOT button.

4- RUMBA32 is now in hardware bootloader mode and will accept firmware upload via USB DFU.

5- Press "Upload" in Arduino IDE. If correctly configured and connected, the upload should be successful