Microchip ATSAMD21J18 Manual

Microchip Ikke kategoriseret ATSAMD21J18

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TRAINING MANUAL

Single-slope PWM Implementation using SAM D21 TCC in

a Touch- based Application

AN- 9232

Prerequisites

• Hardware Prerequisites

• Atmel® SAM D21 Xplained Pro Evaluation Kit

• Atmel KitQT1 Xplained Pro

• USB Micro Cable (TypeA/ -B) Micro

• Software Prerequisites

• Atmel Studio 6.2 or higher

• Atmel Software Framework 3.1 .0 or higher7

• Atmel QTouch® Composer 5.3 or higher

• Atmel QTouch Library 5.3 or higher

• Documentation Prerequisites

• Atmel- - - - - - - -42271 Introduction to QTouch Design Parameters using

SAM- - - - -D21 Xplained Pro_Training Manual_AN 7846 Training Manual

• Estimated completion time: 60min.

Introduction

The goal of this hands on is to:-

• Create a Touch proje using QTouch Project Builderct

• Use QTouch Analyzer to test the project

• Implement a PWM signal using the SAM D21 Timer/Counters for Control

peripheral the brightness (TCC) to drive of a LED

• Modify the utton LED brightness in relation to the Touch Delta value of a B

sensor by updating the PWM duty cycle

42327 A 07/−2014

AN- – -9232 Single slope PWM Implementation using SAM D21 TCC in a Touch-based Application: 42327 2014A 07/−

Page 442 of

Table of Contents

Prerequisites .....................................................................................1

Introduction .......................................................................................1

Icon Key Identifiers ...........................................................................3

1. Training Module Architecture .....................................................4

1.1 Atmel Studio Extension (.vsix) ............................................................. 4

1.2 Atmel Training Executable (.exe) ......................................................... 4

2. Introduction ................................................................................5

3. Assignment 1: Create a Touch project using QTouch Project

Builder ........................................................................................6

3.1 Project Creation ................................................................................... 6

3.2 Conclusion ......................................................................................... 18

4. Assignment 2: Use QTouch Analyzer to Test the Project ........ 19

4.1 Connect the Kit to QTouch Analyzer ................................................. 19

4.2 Test the Proximity Effect of the QTouch Application ......................... 23

4.3 Conclusion ......................................................................................... 24

5. Assignment 3: Implement a PWM Signal using the SAM D21

Timer/Counters for Control Application Peripheral (TCC) ........ 25

5.1 Introduction to Timer/Counters for Control Application (TCC) ........... 25

5.2 TCC Peripheral Initialization Using ASF Quick Start Guide. ............. 27

5.3 Conclusion ......................................................................................... 34

6. Assignment 4: Use QTouch Button to Control LED Brightness 35

6.1 Reading and using Button Touch Delta Value ................................... 35

6.2 Using PWM to Control LED Brightness ............................................. 37

6.3 Conclusion ......................................................................................... 41

7. Conclusion ............................................................................... 42

8. Revision History ....................................................................... 43

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	ATSAMD21J18

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