Kontron KTT20-pITX User Manual
Page 19
KTD-S0045-D Page
15
VESA®
DisplayIDTM
KTT20/pITX Software Guide
The DisplayID
TM
Editor saves the parameters in a intermediate file format. The file extension is 'KDD' (Kon-
tron DisplayID
TM
Data). This file format cannot be used to program the onboard EEPROM.
For transferring this file format into the binary file format for the EEPROM apply the Converter.
3.3.5 Building
DisplayID
TM
File
Start the Windows
®
tool
DisplayID.exe.
Use
the
Editor if you want to modify an existing DisplayID
TM
file or select
New to create a
complete new record.
Change respectively enter new parameters.
Save the parameters in a file with the extension 'KDD'.
Open the saved 'KDD'-file using the
Converter.
Save the binary file with the extension 'KDB' (Kontron DisplayID
TM
Binary).
Program the onboard EEPROM using the board specific update tool.
3.3.6 Erasing
DisplayID
TM
Record
Create a dummy file with a size of 128 bytes filled with the value 0xFFh and program this file using the U-
Boot update tool. This treatment deletes a valid DisplayID
TM
record.
3.3.7
U-Boot EEPROM Update Tool
The update tool is a new component of the U-Boot bootloader. You need two commands to program a
DisplayID
TM
file into the EEPROM:
S
ext2load
,
fatload
,
loadb
or
loady
S
writedid
File Operation
The following example gives an overview:
The storage medium is a USB key formatted with a Linux
®
partition and the DisplayID
TM
file
wvga.kdb is
located in the root directory. No other USB keys are present. The file size of
wvga.kdb amounts 81 bytes.
For loading the file into memory type the following standard U-Boot command line
ext2load usb 0 A00800 wvga.kdb
The memory address (0xA00800) is free selectable. With the
md
command you can control the result
md.b A00800 80
Now you can load the memory content into the EEPROM. Type the new KONTRON U-Boot command
writedid A00800 51
The 'count' respectively the size argument is a very important parameter. Do not use another value as the
file size of your DisplayID
TM
file.