4.7.1
First Request from Host
The Host sends a DFU Download request with a Display command in the data field.
DFU_DNLOAD
Display_Data (6 bytes)
ZLP
SETUP
OUT
IN
Command Identifier
data[0]
data[1]
data[2]
data[3]
data[4]
Description
00h
01h
02h
Display FLASH Data
Blank Check in FLASH
Display EEPROM Data
Id_display_data
03h
start_address
end_address
4.7.2
4.7.3
Second Request from Host
The Host sends a DFU Upload request.
Answers from the Device
The device sends to the Host the firmware from the specified start address to the specified end
address.
DFU_UPLOAD
SETUP
IN
Firmware Packet 1
Firmware Packet 2
IN
Firmware Packet n
ZLP
IN
OUT
11
7618C–AVR–07/08
ATMEL [ ATMEL ]
