Atmel AVR1921 Installation and operating instructions

AVR1921: Reprogramming the Xplain
AT90USB1287 and ATxmega128A1 firmware
Features
• ATxmega128A1 microcontroller
• External Memory
- 8MB SDRAM
- 8MB Serial Data Flash
• AT90USB1287
- Communication gateway
- Programmer for Atmel®AVR®XMEGATM
- Analog Input (to ADC)
- Temperature sensor
- Potentiometer
• Analog Output (from DAC)
- Mono speaker via audio amplifier
• Digital IO
- UART communication through USB gateway
- 8 micro switch buttons
- 8 LEDs
- 8 spare analog pins
- 8 spare digital pins
1 Introduction
This application note describes how to reprogram the AT90USB1287 and the
ATxmega128A1 on the Xplain board with the original firmware, or your own
application code.
Figure 1-1. Xplain evaluation kit.
8-bit
Microcontrollers
Application Note
Rev. 8301A-AVR-04/10

2 AVR1921 8301A-AVR-04/10
2 Reprogramming the firmware
2.1 Powering the Xplain board
Power the Xplain kit by connecting it to a PC host or a USB power adapter. The
Xplain USB connector is the mini-B type used for most portable products today.
Figure 2-1. Xplain connectors
If connecting the Xplain kit to a PC, you might be required to install the Xplain USB
driver the first time it is connected. Please find the install file in the /software/USB
driver/ folder of the zip file distributed with this application note
(0http://www.atmel.com/avr/). Select the driver corresponding to the
Xplain/AT90USB1287 firmware revision used. You will find the revision ID on the
back side of the Xplain as shown in Figure 2.2b. It is possible to replace the
AT90USB1287 firmware of a revision 1 kit with later firmware, in that case it is
required to uninstall the USB driver and install the new driver.

AVR1921
8301A-AVR-04/10
Figure 2-2a. Xplain revision
Figure 2-2b. Xplain revision

4 AVR1921 8301A-AVR-04/10
2.2 Using the preprogrammed firmware
The preprogrammed firmware in the ATxmega128A1 runs a demo application where
sounds/tunes are played when the buttons are pushed.
The preprogrammed firmware of the AT90USB1287 is composed of two distinct
sections: the bootloader and the application.
The bootloader provides a simple way for the user to update the application section of
the AT90USB1287 with the only need of FLIP (a free PC application) and a USB
cable.
The preprogrammed application is a USB to serial port bridge. When the USB is
connected to a PC host and correctly enumerated, the AT90USB1287 will operate as
a communication gateway, and pass on data between the UART and the USB (COM
port). When powered from a USB power adapter (and therefore not enumerated) the
AT90USB1287 will echo back data received on the UART.
2.3 Reprogramming the ATxmega128A1 firmware using JTAGICE mkII
This guide requires that AVR Studio 4 is installed. It is a walkthrough which describes
how to download the original firmware using a JTAGICE mkII with AVR Studio 4.18.
1. Make sure the Xplain board is powered (please refer to the “52.1 6Powering the
Xplain board” section).
2. Connect the JTAGICE mkII to the “JTAG & PDI XMEGA” pin header (J100)
as shown in figure 2.1.
3. Open the programming dialog in AVR Studio selecting Tools -> Program AVR
-> Connect. Select “JTAGICE mkII” and Auto and click “Connect”.
4. Select the “Main” tab and choose the “ATxmega128A1” from the dropdown
list. Choose “JTAG mode” as programming mode.
5. Select the “Program” tab and choose the XMEGA hex file provided with the
application note as Flash input hex file
(/firmware/revision_XXX/ATxmega128A1/ATxmega128A1.hex). Click
Program.
The device is now programmed original firmware. The same procedure can be used
to download your own application code.
2.4 Reprogramming the AT90USB1287 firmware using JTAGICE mkII
This guide requires that AVR Studio is installed. It is a walkthrough which describes
how to download the bootloader, the application as well as setting the correct fuse
settings. The firmware is downloaded with the JTAGICE mkII and AVR Studio 4.18.
Downloading the firmware:
1. Make sure the Xplain board is powered (please refer to the “72.1 8Powering the
Xplain board” section).
2. Connect the JTAGICE mkII to the “JTAG USB” pin header (J200) as shown in
figure 2.1.
3. Open the programming dialog in AVR Studio selecting Tools -> Program AVR
-> Connect. Select “JTAGICE mkII” and Auto and click “Connect”.

AVR1921
8301A-AVR-04/10
4. Select the “Main” tab and choose the “AT90USB1287” from the dropdown list.
Choose “JTAG mode” as programming mode.
5. Select the “Program” tab and choose the USB bootloader hex file provided
with the application note as Flash input hex file
(/firmware/revision_XXX/AT90USB1287/ AT90USB1287.hex). Click Program.
6. Select the “Fuses” tab in the programming dialog. The fuses should be set as
shown below. (Ext 0xFB, High 0x98, Low 0xDE)
Figure 2-2. USB fuse settings
2.5 Reprogramming the AT90USB1287 application firmware using FLIP
This guide requires that both AVR Studio®and FLIP are installed. It is a walkthrough
which describes how to download the USB application firmware. To use FLIP as a
stand alone application, please refer to the application note: “AVR282: USB Firmware
Upgrade for AT90USB”.
1. Disconnect the USB power source.
2. Unplug the JTAGICE mkII and place a jumper between pins 1 and 2 on the
“JTAG USB” pin header (J200).
3. Connect the USB cable to a computer.
4. The first time this is done, the bootloader driver will have to be installed. A
“Found new hardware wizard” will pop up. Select “No, not this time” and next
as shown bellow.

6 AVR1921 8301A-AVR-04/10
Figure 2-3. Found new hardware
5. Select “Install from a list or specific location (Advanced). Click next.
6. Select “Include this location in the search:”. Select the FLIP installation folder
and the usb folder as shown bellow. Click next.
Figure 2-4. Driver path selection
7. Click finish.
8. Open AVR Studio and select Tools -> Flip X.X.X.
9. Select Device -> Select... -> AT90USB1287 and click “OK”
10. Select Settings -> Communication -> USB and click “Open”.
11. Under “Operations Flow” check out “Erase, “Program” and “Verify”.
12. Choose the hex file to be programmed: select File -> Load hex file. Choose
the USB application firmware file (/firmware/revision_XXX/AT90USB1287/
Xplain_USB.a90) and click “OK”.
13. Press “Run”.

AVR1921
8301A-AVR-04/10
The device is now programmed with the serial gateway application firmware. The
same procedure can be used to download your own application code. Remove the
jumper at the “JTAG USB” pin header (J200) and cycle power to start the application
code.

8301A-AVR-04/10
Disclaimer
Headquarters International
Atmel Corporation
2325 Orchard Parkway
San Jose, CA 95131
USA
Tel: [phone]
Fax: [phone]
Atmel Asia
Unit 1-5 & 16, 19/F
BEA Tower, Millennium City 5
418 Kwun Tong Road
Kwun Tong, Kowloon
Hong Kong
Tel: [phone]
Fax: [phone]
Product Contact
Atmel Europe
Le Krebs
8, Rue Jean-Pierre Timbaud
BP 309
78054 Saint-Quentin-en-
Yvelines Cedex
France
Tel: [phone]
Fax: [phone]
Atmel Japan
9F, Tonetsu Shinkawa Bldg.
1-24-8 Shinkawa
Chuo-ku, Tokyo 104-0033
Japan
Tel: [phone]
Fax: [phone]
Web Site
1http://www.atmel.com/
Technical Support
2[email protected]
Sales Contact
3www.atmel.com/contacts
Literature Request
4www.atmel.com/literature
Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any
intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND
CONDITIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED
OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS,
BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the
contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any
commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in,
automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.
© 2010 Atmel Corporation. All rights reserved. Atmel®, Atmel logo and combinations thereof, AVR®, AVR®logo, AVR Studio®and others, are
the registered trademarks; XMEGA™ and others are trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may
be trademarks of others.