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DEVICE FIRMWARE UPGRADE (DFU) IMPLEMENTATION IN ST7 USB DEVICES

5 DFU FULL-SPEED PROJECT

The FS DFU project has been created from the ST7265 5-in-1 project and the ST7 USB FS Li-

brary. Two other parts have been added: the DFU specific files and the HDFlash drivers (in

bold in the next section).

5.1 DIRECTORIES

ST7USBFS-DFU

+-- Object: output from compilation

+-- Sources

+-- MassSto

+-- Mcl

+-- Usb: ST7 USB Full-Speed Library kernel files

+-- Usb_App: USB application specific files

+-- Usb_DFU: USB DFU specific files (kernel + application + HD Flash drivers)

For details of “MassSto” and “Mcl” directories please refer to AN1475 “Developing an

ST7265X Mass Storage Application”.

5.2 DFU FILES

All these files are located in the “Usb_DFU” directory. Files in bold are files that depend on the

protocol and/or the application, and can be modified by the user.

Table 8. FS Project DFU Files

File Name

Description

DFU.c / DFU.h

Contain all DFU kernel and Protocol routines.

DFU_Desc.c

Contains the DFU descriptors.

DFU_Var.asm

Contains the definition of DFU variables.

Flashing.h

Contains the HDFlash routines.

User_USB.c / User_USB.h

Contain all call-back functions called by the Library. These

functions call the DFU functions described in the DFU.c file.