AP08113
Capacitive-Touch Color Wheel Implementation
Introduction
Application Note
5
V1.0, 2010-08
1
Introduction
This application note describes the Color Wheel Application Kit, a ready-to-use implementation of the touch-
sensing application to adjust light colors with a touch-wheel (
Figure 1
). The kit is built around the XC822T, a
member of Infineon Technologies 8-bit microcontrollers XC800 Family, which is capable of capacitive touch
detection and LED driving with color control.
The implementation comprises of a touch-wheel PCB board consisting of XC822T, the LEDs and the software
code running on XC822T. This document takes the user through the steps necessary to create their own XC822T
1)
solution. The source code provided can be modified and compiled with the free DAvE-Bench tool chain. The user
can download the code into flash, execute it and observe the touch-wheel controls in action.
Please refer to the XC82x User’s Manual for detailed description of the XC822T product.
1.1
Overview
The topics covered in this application note:
•
Color Wheel features
•
Software:
– Implementation details of Color Wheel software code
– Overview flow chart
– User-defined parameters
– Modify and Compile code using DAvE-Bench
– Download modified code using DAvE-Bench (XC800_FLOAD)
•
Hardware:
– On-chip modules utilized
– Board schematic and layout
Figure 1
Color Wheel Application Kit
1) The steps and software code are also applicable for other XC82x/XC83x products that support capacitive touch control.
All manuals and user guides at all-guides.com
