AN1577 datasheet(22/30 Pages) STMICROELECTRONICS

Part #	AN1577

Description	This application note presents the implementation

PDF	30 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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DEVICE FIRMWARE UPGRADE (DFU) IMPLEMENTATION IN ST7 USB DEVICES

4.6 RESTRICTIONS

This project is compatible with MetroWerks compiler only and with ST72F62-16K and

ST72F63B-16K devices due to RAM size restriction.

Table 7. LS Project DFU Variable

Variable Name

Description

DFUDataReceived

Buffer for storing data coming from the host after a Down-

Load request.

DFUDataToSend

Buffer containing data to send to the host for UpLoad, Get-

State or GetStatus requests.

DFUDeviceState

Contains the current DFU state of the device as defined in the

DFU specification. Sent after a GetState or GetStatus re-

quest.

DFUDeviceStatus

Contains the current DFU status of the device as defined in

the DFU specification. Sent after a GetStatus request.

DFUPollTimeOutH

Contains the high byte of the Polling TimeOut. Sent after a

GetStatus request.

DFUPollTimeOutL

Contains the low byte of the Polling TimeOut. Sent after a

GetStatus request.

AN1577 Datasheet(PDF) 22 Page - STMicroelectronics