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DFU - DfuSe

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Introduction

DFU or DfuSe is the USB package for do a firmware upgrade on STM32 via USB.
DfuSe contains the demo GUI, debugging GUI, all sources files and the protocol layer.



For using DFU on STM32 please read the AN3156 and UM0412.
AN3156 - USB DFU protocol used in the STM32 bootloader
UM0412 - Getting started with DfuSe USB device firmware upgrade

The key benefits of the DFU Boatloader are:
No specific tools such us JTAG, ST-LINK or USB-to-UART cable are needed.
The ability to program an "empty" STM32 device in a newly-assembled board via USB.
And easy upgrade the STM32 firmware during development or pre-production.

Here there is a video that show how to use DFU and STM32F072B-DISCO.



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How to do


  • For using DFU on STM32 please read:
    AN3156 - USB DFU protocol used in the STM32 bootloader
    UM0412 - Getting started with DfuSe USB device firmware upgrade

  • Install on your PC the DfuSe (STSW-STM32080) that is a GUI for upgrade the STM32.
For linux see here:
http://dfu-util.gnumonks.org/
http://dfu-util.sourceforge.net/
the SW for Linux is also here.
  • After the DfuSe installation, in the package, there is the utility: DFU File Manager
    that is used for generate a .DFU file form a .HEX or .S19 file, see below.


  • Now we use the .DFU file with the DfuSe Demonstration to program the device. Follows the steps below.

    1. You must generate a .DFU file from an .HEX or .S19 file, for do this use the DFU File Manager.
    2. You must put in DFU mode your eval-board (boot mode), in our case the board is the STM32F072B-DISCO and is necessary connect the BOOT pin to VDD pin, see below the red box.


    3. Now connect your eva-board to the PC and you must see a message from USB that the eva-board is in DFU mode.
    4. Run the DfuSe Demonstration and download .DFU file on your eval-board.
    5. Now remove the boot jumper (in our case, remove the jumper from BOOT pin to VDD pin) and reset your eval-board.



      You must see the run of the program that you are downloaded via       DfuSe Demonstration.

  • Here there is a video that show how to use DFU and STM32F072B-DISCO.


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Link
  • DfuSe (STSW-STM32080)
  • AN3156 - USB DFU protocol used in the STM32 bootloader
  • UM0412 - Getting started with DfuSe USB device firmware upgrade
  • DFU video tutorial is here
 
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