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Atmel AVR1619: XMEGA-B1 Xplained

Demonstration

Features

• Atmel

ATxmega128B1

• Atmel XMEGA

-B1 Xplained kit compatible

• On-board LCD display

• USB 2.0 Full speed composite device

- Mass Storage interface with on-board Atmel DataFlash

- Generic HID interface for host application data exchange

• On-board sensors measurements

1 Introduction

This application note presents the default firmware shipped within the XMEGA-B1

Xplained kit that demonstrates all the main capabilities of this kit.

Using the Atmel AVR

XMEGA B devices makes USB and LCD easy to implement

and to use. This application note presents a USB composite demonstration

application acting both as a USB mass-storage device and a USB generic HID

communication device.

The USB mass storage interface allows accessing the on-board DataFlash

whereas the generic HID interface allows the kit to communicate with a PC

application.

This application performs on-board sensors (light, temperature, voltages) and at

the same time displays the results using the on-board LCD and transmits the

measurements results to a PC application using USB.

8-bit Atmel

Microcontrollers

Application Note

Rev. 8449A-AVR-10/11

Summary of content (13 pages)

PAGE 1
Atmel AVR1619: XMEGA-B1 Xplained Demonstration Features Atmel® ATxmega128B1 ® Atmel XMEGA -B1 Xplained kit compatible On-board LCD display USB 2.
PAGE 2
Environment The demonstration consists of an embedded application for the Atmel ATxmega128B1 (this will be called “firmware” in the rest of this document) and a PC host application (running on Windows® XP, Windows Vista®, or Windows 7). The host application communicates with the Atmel XMEGA-B1 Xplained using the USB generic HID interface handled by the firmware.
PAGE 3
Atmel AVR1619 3 Firmware setup Out of the box, the Atmel XMEGA-B1 Xplained kit is pre-programmed with this default firmware. However, if this default firmware is erased or modified, it is possible to recover the original firmware using the hex file included within the zip file attached to this application note. 3.
PAGE 4
If the firmware loaded into the Atmel XMEGA-B1 Xplained does not match the ATxmega128B1 revision, the on-board LCD will display a “REV ERR” message.
PAGE 5
Atmel AVR1619 4 Host application setup The host application called ‘XMEGA-B1 Xplained demonstration’ is optional, but it allows controlling and getting information from the Atmel XMEGA-B1 Xplained by using USB generic HID interface. The host application setup can be found in the zip file attached to this application note. To install the application, follow the installation wizard started from the ‘setup.exe’ file. Figure 4-1. Host application installation wizard.
PAGE 6
5 Running the demonstration 5.1 Connecting the Atmel XMEGA-B1 Xplained to USB When connecting to the USB host computer for the first time, the firmware will enumerate as a composite device with two USB interfaces. The operating system will install the new USB devices by itself (no specific driver is needed for both mass storage and generic HID interfaces).
PAGE 7
Atmel AVR1619 Figure 5-2. Atmel XMEGA-B1 Xplained running the application. 5.2.1 Using the USB mass storage interface The USB mass storage interface allows accessing the on-board DataFlash of XMEGA-B1 Xplained as a regular USB thumb drive. Prior to use this drive, the operating system will ask to format it. Figure 5-3. Formatting the mass storage drive. The drive capacity is automatically detected as the on-board DataFlash size, meaning 8Mbytes. Figure 5-4. Format properties for mass storage drive.
PAGE 8
5.2.2 Using the USB generic HID interface This USB interface offers the capability to control and get the following information from the Atmel XMEGA-B1 Xplained: • Retrieve on-board sensors measurements • Get touch buttons status • Get information about the connected firmware • Adjust on-board LCD contrast and backlight level • Control on-board LEDs • Display user input text strings or numeric values on the LCD The generic HID interface is accessible using the PC host application previously installed.
PAGE 9
Atmel AVR1619 Figure 5-7. Host application input controls. • The vertical cursor to the right called ‘Contrast’ and ‘Backlight’ allows adjusting the on-board LCD display • The four LEDs on the bottom can be activated so that it toggles the on-board LEDs • The LCD text field can be selected and a user message can be input.
PAGE 10
5.2.3 Using the host application to display information The figure below shows what parts of the panel can be used to display information coming from the Atmel XMEGA-B1 Xplained. Figure 5-8. Host application output controls. • The touch buttons display on the host application reflects the activation status of CS0...
PAGE 11
Atmel AVR1619 6 Related documentation • Atmel AVR1912: XMEGA-B1 Xplained Hardware user guide http://www.atmel.com/dyn/resources/prod_documents/doc8397.pdf • Atmel AVR1916: USB DFU bootloader for XMEGA http://www.atmel.com/dyn/resources/prod_documents/doc8429.pdf • Atmel FLIP http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3886 • Atmel AVR Software Framework http://www.atmel.com/asf • Atmel AVR XMEGA B Manual http://www.atmel.com/dyn/resources/prod_documents/doc8291.pdf • Atmel AVR Studio 5.
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7 Table of contents Features ............................................................................................... 1 1 Introduction ...................................................................................... 1 2 Environment ..................................................................................... 2 3 Firmware setup ................................................................................ 3 3.1 Downloading the firmware...................................................
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Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: (+1)(408) 441-0311 Fax: (+1)(408) 487-2600 www.atmel.com Atmel Asia Limited Unit 01-5 & 16, 19F BEA Tower, Milennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon HONG KONG Tel: (+852) 2245-6100 Fax: (+852) 2722-1369 Atmel Munich GmbH Business Campus Parkring 4 D-85748 Garching b. Munich GERMANY Tel: (+49) 89-31970-0 Fax: (+49) 89-3194621 Atmel Japan 16F, Shin Osaki Kangyo Bldg.