STM32F401

Instructions on flashing the STM32F401 microcontroller can be found in this article.

The blackpill STM32F401 microcontroller

---

STM32F401

Here are the steps to flash the STM32F401 microcontroller:

1. Open QMK Toolbox software.

2. Connect the STM32F401 board to your computer using a USB-C cable.

3. In the section "MCU (AVR Only)" select the "atmega32u4".

4. In the "Local file" tab, click "open" to locate the firmware file you want to flash to the microcontroller.

5. Check the "Auto-Flash" box.

6. Now it's time to enter the bootloader on the STM32F401 :

   1. Locate the buttons "BOOT0" and "NRST" on the physical microcontroller;

   2. Press and hold the BOOT0 button, do not release;

   3. Quickly click on the NRST button;

   4. Release the BOOT0 button.

7. Wait for the flashing operation to complete. QMK should display the current status of reading and writing the software.

8. Unplug the USB cable from the board. Once you plug it back in, the installed program should function properly.

That's it! You have successfully flashed the STM32F401 microcontroller.

Info and help