Before you begin

• Add the Arduino Mbed OS Giga Boards to Arduino IDE using the Boards Manager.
• Download and install the STM32CubeProgrammer from STMicroelectronics.
  • You will be required to provide and validate an email address to get a download link.
  • On macOS, you may need to run the executable directly: Right-click the .app container and select Show package contents, then navigate into Contents/MacOs. Double-click the file SetupSTM32CubeProgrammer-X_Y_Z_macos executable.

1. Connect the board in bootloader mode

1. With the board unplugged, press the button BOOT0 and continue to press it.

   

2. Keep holding the BOOT0 button as you connect the Giga R1 WiFi to your computer using a USB C cable.

3. When the ON LED is lit, release the BOOT0 button.

2. Burn the bootloader using STM32CubeProgrammer

1. Download the bootloader file^[1].

2. Open STM32CubeProgrammer.

3. Click on the Open file tab.

   

4. Navigate to the Arduino 15 folder, then select this file:

   packages/arduino/hardware/mbed_giga/3.9.9/bootloaders/GIGA/bootloader.elf

5. If you get a “Warning: File corrupted. Two or more segments defines the same memory zone” message, ignore it.

6. Set the programmer selection (default: ST-LINK) to USB.

   

7. For the Port selection, select your board. To refresh the list, click the update button.

   

8. Click on Connect button. The connection status should change from “Not connected” to “Connected”.

   

9. Click on the Download button. If you get another warning message, close it by selecting OK.

   Note: Click on the left part of the button where it says “Download” (not the arrow, which opens a context menu)

   

10. The message “File download complete” will appear as a pop-up notification when the download is complete.

11. Disconnect the board from the USB-C cable and connect it again.