You should manually reset the board when the first text in red is printed in the IDE output window. This indicates that resetting the board into bootloader DFU mode was not successful.
If you cannot hear any beep sound nor see the LED of the board blinking, the following message may appear:Ĭouldn't find the DFU device: The the upload tool ('maple_loader') will upload the generated binary file to the board. This action is accompanied by a beep sound and the on-board LED will start blinking. After the compilation output you will see the following:Īssuming the board is in perpetual bootloader mode and continuing to attempt dfu programming.ĭfu-util - (C) 2007-2008 by OpenMoko Inc. Select its COM port from the Tools -> Port menu. Once a sketch is running, the DFU is not present, but the Maple Serial device is. This will be used to upload the first sketch. If your board does not yet have a sketch running, it appears as a Maple DFU device. You can find it in the menu at File -> Examples -> A_STM32_Examples -> Digital -> Blink.Ĭurrently, there are four supported upload methods:įirst, you need to ensure you have the drivers for the Serial and DFU (upload) devices installed - see Installation for instructions.Īlso, your STM32 board needs to have the STM32dunio bootloader - see Burning the bootloader. That's a very small sketch and since it makes an LED blink, it's easy to check if it's running or not. If you're just starting, you can try the 'blink' sketch. The preferred upload method can be selected in the IDE from Tools -> Upload method. In Arduino IDE, the first step is to select the appropriate STM32 board from the Tools -> Board menu.
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