Abov AT3108U User manual

Global Top Smart MCU Innovator, ABOV Semiconductor
www.abovsemi.com
AT3108U
Demo Board Quick Start Guide
STDEMO-AT3108U-KEY-A
Quick Start Guide
Version 1.00

Contents AT3108U Demo board quick start guide
2
Contents
1Introduction ....................................................................................................................................4
2User requirements..........................................................................................................................5
2.1 Hardware.............................................................................................................................5
2.1.1 I2C to UART Board.................................................................................................5
2.1.2 Touch Demo Board.................................................................................................5
2.2 Software ..............................................................................................................................6
2.3 System requirements ..........................................................................................................7
2.4 References ..........................................................................................................................8
2.4.1 Reference documents ............................................................................................8
2.4.2 ABOV website ........................................................................................................8
3Building and running project ..........................................................................................................9
3.1 Prepare the I2C to UART Board and Touch Demo Board ..................................................9
3.1.1 Hardware components of the I2C to UART Board .................................................9
3.1.2 Hardware components of the Shield Board..........................................................10
3.2 Set up the I2C to UART Board and Touch Demo Board ...................................................11
3.2.1 Set jumpers to control the I2C to UART Board ....................................................11
3.2.2 Connect to the I2C to UART Board to use the Touch Demo Board .....................12
3.3 Connect the I2C to UART Board to your PC.....................................................................13
3.3.1 Connect PC via USB on the I2C to UART Board .................................................13
3.4 AT GUI program practice...................................................................................................14
3.4.1 Run the AT GUI program ......................................................................................14
3.4.2 Viewing values in AT GUI program .......................................................................15
3.4.3 Options of Auto Read Selection ...........................................................................16
3.4.4 View Graph (Plot) .................................................................................................17
3.4.5 Register value settings .........................................................................................18
3.5 Software description..........................................................................................................20
3.5.1 Flow chart for overall workflow .............................................................................20
3.5.2 Touch Mode selection...........................................................................................21
3.5.3 How to enter Sleep Mode .....................................................................................22
3.5.4 I2C communication method during Sleep Mode ..................................................23
3.5.5 Register value settings and digital output pin use ................................................24
3.5.6 Loop operation and register value update............................................................25
3.5.7 I2C Master example code.....................................................................................26
Revision history .....................................................................................................................................30

AT3108U Demo board quick start guide List of figures/ List of tables
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List of figures
Figure 1. I2C to UART Board Layout (Hardware) ...................................................................................5
Figure 2. AT3108U Touch Board Layout (Hardware) ..............................................................................5
Figure 3. AT GUI Program (Software) .....................................................................................................6
Figure 4. Window PC and Micro B Cable ...............................................................................................7
Figure 5. ABOV Semiconductor Website ................................................................................................8
Figure 6. I2C to UART Board Layout ......................................................................................................9
Figure 7. Touch Demo Board Description .............................................................................................10
Figure 8. I2C to UART Board Description .............................................................................................11
Figure 9. I2C to UART Board and Touch Demo Board Connection......................................................12
Figure 10. USB Cable and I2C to UART Board Connection.................................................................13
Figure 11. AT GUI Program Icon ...........................................................................................................14
Figure 12. AT GUI Program Menu.........................................................................................................14
Figure 13. Viewing Values in AT GUI Program .....................................................................................15
Figure 14. Run (Start Code Execution) .................................................................................................16
Figure 15. Data Menu Options ..............................................................................................................16
Figure 16. Graph of Channels...............................................................................................................17
Figure 17. Register Value Settings (Part1) ...........................................................................................18
Figure 18. Register Value Settings (Part2) ...........................................................................................19
Figure 19. Flow Chart of Register Setup Operations ............................................................................20
Figure 20. Timing Diagram of Touch Sensor Operation in Fast Mode (Active Mode) ..........................21
Figure 21. Timing Diagram of Touch Sensor Operation in Sleep Mode (Snap Mode)..........................21
Figure 22. Timing Diagram of Delay Time in Sleep Mode (Snap Mode) ..............................................22
Figure 23. Timing Diagram of Touch Event Occurrences in Sleep Mode .............................................23
Figure 24. Timing Diagram of I2C_EN occurrences in Sleep Mode .....................................................23
Figure 25. Flow Chart of Register Setup Loop Operations...................................................................25
Figure 26. AT3108.h ..............................................................................................................................26
Figure 27. AT3108.c ..............................................................................................................................28
List of tables
Table 1. Touch Demo Board Description...............................................................................................10
Table 2. Example Register Value Settings (Part2) ................................................................................19

1. Introduction AT3108U Demo board quick start guide
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1Introduction
AT3108 Demo Board Quick Start Guide introduces software environment and development
recommendations for the ABOV Logic Type Touch Key.
In this document, we introduce an AT GUI program and a method to operate AT3108U Touch Demo
Board with examples. By reading this document thoroughly, you can learn the easy way to develop the
ABOV Logic Type Touch Key.

AT3108U Demo board quick start guide 2. User requirements
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2User requirements
2.1 Hardware
2.1.1 I2C to UART Board
Figure 1. I2C to UART Board Layout (Hardware)
2.1.2 Touch Demo Board
Figure 2. AT3108U Touch Board Layout (Hardware)

2. User requirements AT3108U Demo board quick start guide
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2.2 Software
You can debug using the AT GUI program.
Figure 3. AT GUI Program (Software)

AT3108U Demo board quick start guide 2. User requirements
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2.3 System requirements
Windows PC (7, 8, 10)
USB Micro B type cable
Figure 4. Window PC and Micro B Cable

2. User requirements AT3108U Demo board quick start guide
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2.4 References
2.4.1 Reference documents
AT31082U Quick Guide
AT3108U HW Manual
AT3108U Schematic
Product User’s Manual
Master Example Code
2.4.2 ABOV website
For detailed information about the corresponding software and documents, you can visit our website at
https://www.abovsemi.com.
Figure 5. ABOV Semiconductor Website

AT3108U Demo board quick start guide 3. Building and running project
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3Building and running project
Running the AT GUI program makes it easier to start the Touch Demo Board. Follow the steps below
to start the Demo Board:
Step 1. Prepare the I2C to UART Board and Touch Demo Board.
Step 2. Set up the I2C to UART Board and Touch Demo Board.
Step 3. Connect the I2C to UART Board to your PC.
Step 4. Run the AT GUI program.
3.1 Prepare the I2C to UART Board and Touch Demo Board
3.1.1 Hardware components of the I2C to UART Board
1. The I2C to UART Board operates as an I2C Master based on the Touch Demo Board, and
contacts your PC through UART communication.
2. The I2C to UART Board is connected to the USB port on your PC, and can be tested using
the GUI program.
Figure 6. I2C to UART Board Layout

3. Building and running project AT3108U Demo board quick start guide
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3.1.2 Hardware components of the Shield Board
1. AT3108 (16-QFN) chip: Touch Sensing 8CH (channel) and LED 1 pins are supported.
2. The 2mm (2T) Thick plastic cover is attached to the Touch PAD.
Table 1. Touch Demo Board Description
Function
Description
Remark
Touch Key
User SW
Touch Only Pin (CS0 to CS7)
GPIO
User SW
OUT1
External Interface
User SW
VDD, GND, INT,SDA, SCL, I2C_EN, RESET, OUT_MODE
Figure 7. Touch Demo Board Description