StmDfuUsb

Update the firmware of your STM32 microcontroller via USB cable using the USB Device Firmware Upgrade (DFU) protocol.

This application enables you to update the firmware of an STM32 CPU through a USB connection using the USB DFU protocol.

The application is developed based on the following documents from STMicroelectronics.

1. AN2606: STM32 microcontroller system memory boot mode

2. AN3156: USB DFU protocol used in the STM32 bootloader

How to use the application.

PREREQUISITE

Your mobile device must support USB-OTG.

PREPARATION

1. Connect your STM32 development board to your mobile device using a USB-OTG cable.

2. Activate bootloader mode on the STM32. Refer to AN2606 for instructions. Generally, this involves setting the BOOT0 and BOOT1 pins to the correct combination according to your specific CPU model.

PROGRAMMING

1. Select the firmware file you wish to write.

- The firmware file must be in one of the following formats:

- Intel Hex

- Motorola S-Record

- DfuSe (STMicroelectronics DFU format)

- Raw binary

2. Configure your desired writing options. The following options are available:

- Erase only necessary memory pages

- Remove readout protection if required

- Start the CPU automatically after programming

3. Press the "Load file to flash" button and wait for the operation to complete.

The application also supports the following additional operations:

- Erasing flash memory

- Checking if flash is blank

- Comparing flash contents with a file.

You can select these operations via their corresponding menu items.

The application has been tested on the following microcontroller models:

STM32F072

STM32F205

STM32F302

STM32F401

STM32F746

STM32G474

STM32L432

USAGE RESTRICTIONS

You can perform up to 25 firmware uploads completely free of charge.

Once you reach this limit, you can purchase one of two services:

1. An additional 100 uploads

2. Unlimited use of the application.