AVR1908

AVR1908: QTouch Xplained Hardware User's Guide • Xplain compatible top module for Atmel® capacitive touch - QTouch® - Two buttons - One slider - One wheel • Requires download of - Atmel QTouch library software - AVR QTouch® Studio for visualization of data (debug frontend) - FLIP (Flexible In-system Programmer) 8-bit Microcontrollers Application Note 1 Introduction QTouch Xplained is an easy to use low-cost evaluation kit, which demonstrates QTouch and the QTouch Library features. The QTouch Xplained utilizes the Xplain to do this. The kit demonstrates how a QTouch solution requires only a very simple circuit design and a minimum of external components. It includes support for eight QTouch channels: a slider (3 channels), a wheel (3 channels) and two keys (1 channel each). Figure 1-1. QTouch Xplained Evaluation board Rev. 8275A-AVR-04/10 2 Getting started 2.1 Programming the firmware for the Xplain board In order to get the QTouch board up and running the AT90USB1287 and ATxmega128A1 device mounted on the Xplain board needs to be programmed. The required firmware is included in the .zip file following this application note. For a detailed description about programming the Xplain board, please refer to application note AVR1921. 2.2 Connecting the QTouch Xplained The QTouch Xplained needs to be connected to the Xplain in order to demonstrate QTouch and the QTouch library features. This section provides all information needed to connect the QTouch Xplained add-on board to the Xplain mother board, and then connecting the bundle to the PC host in order to use it with QTouch Studio. 2.2.1 Connecting the QTouch Xplained to Xplain The QTouch Xplained uses four 10-pin headers to connect to Xplain. This makes it easy to connect and disconnect the QTouch Xplained from the Xplain board. Note that the female SMD mounted pin-headers might get damaged if not handled carefully. The plastic insulation might come off and exposes the conductors. Refer to Figure 2-1 for an illustration how to connect the two boards together. • Attach the QTouch Xplained to the Xplain board. The QTouch Xplained is connected to the Xplain board by connecting the four 10-pin headers on the QTouch Xplained (female) to the four 10-pin headers on the Xplain (male). • The text orientation should be the same on both kits. • Ensure that all four pin headers are properly connected. Figure 2-1 Connecting the QTouch Xplained to the Xplain board 2.2.2 Connecting the QTouch Xplained & Xplain to the PC The Xplain board must be connected to a host PC using an USB cable. The USB connection is used for communication between the QTouch Studio and the 2 AVR1908 8275A-AVR-04/10 AVR1908 AT90USB1287 device, and to power the QTouch Xplained & Xplain boards. Refer to Figure 2-2 to see how to connect to the PC. • Connect an USB cable to the Xplain board and the host PC. • If programmed correctly (see section Error! Reference source not found.), the board will register as a Human Interface Device (HID), so no driver installation is required for most modern operating systems. • Launch QTouch Studio and wait for the Xplain board to register. Figure 2-2 Connecting the QTouch Xplained & Xplain to the PC 3 Quick introduction to the QTouch Xplained features The best way to learn how to use the QTouch Xplained is to go through the QTouch Xplained training. This training is included in the zip file that is distributed with this application note. The QTouch Xplained consists of: Figure 3-1 Slider 3 8275A-AVR-04/10 Figure 3-2 Wheel Figure 3-3 Buttons 4 AVR1908 8275A-AVR-04/10 Disclaimer Headquarters Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 International Atmel Asia Unit 1-5 & 16, 19/F BEA Tower, Millennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon Hong Kong Tel: (852) 2245-6100 Fax: (852) 2722-1369 Atmel Europe Le Krebs 8, Rue Jean-Pierre Timbaud BP 309 78054 Saint-Quentin-enYvelines Cedex France Tel: (33) 1-30-60-70-00 Fax: (33) 1-30-60-71-11 Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Product Contact Web Site http://www.atmel.com/ Technical Support avr@atmel.com Sales Contact www.atmel.com/contacts Literature Request www.atmel.com/literature Disclaimer: The information in this document is provided in connection with Atmel products. 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