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Chapter 4

 

 

Project Examples 

 
 
This chapter introduces examples of the CapSense Matrix Button Keypad board by using the 
capacitive touch buttons with Cypress’s CapSense/SmartSense technology. 

 

 

 
 

17

4 .1

4 .1

 

 

Syst e m  

 

Re quire m e nt s 

 

Syst e m Re quire m e nt s

Make sure PSoC Programmer is installed on your PC and PSoC MiniProg (sold separately) is used. 
 

 

PSoC Programmer Setup 

Multiple versions of PSoC Programmer cannot be installed on the same computer. Un-install any 
previous version. 

Installing from PSoC Programmer CD-ROM: 

1.

 

Place the System CD-ROM in your CD-ROM drive 

2.

 

At the setup screen, select Install PSoC Programmer. 

3.

 

Proceed as directed.   

 

4 .2

4 .2

 

 

LEDs 

 

 

 

LEDs

The first example project demonstrates the ability of the PSoC device to integrate CapSense, LED 
driving capabilities. The CapSense buttons are configured so that when a button is touched its 
corresponding LED lights up. In addition, a buzzer sound will activate whenever a button is 
pressed.  
 
 
 
 

Содержание Cypress CapSense P0080

Страница 1: ...ss mainly focus on the distribution of electronic components Line cards we deal with include Microchip ALPS ROHM Xilinx Pulse ON Everlight and Freescale Main products comprise IC Modules Potentiometer...

Страница 2: ......

Страница 3: ...iagram of the CapSense Matrix Button Keypad 7 2 3 Power up the CapSense Matrix Button Keypad 8 2 4 Default Switch and Jumper Settings 9 CHAPTER 3 USING THE CAPSENSE MATRIX BUTTON KEYPAD 11 3 1 User In...

Страница 4: ...Sense technology The board contains 16 capacitive touch buttons organized in a matrix style format The board will enable users to achieve quick to market designs in large solution applications such as...

Страница 5: ...PCB manufacturing variances o Adaptive Threshold Auto Tuning for different overlays o SNR Optimization to obtain robust performance Configurable Solution o Pin configurable buttons Featured device o...

Страница 6: ...utton Keypad Board o Portable Battery powered USB Charger AA battery type o USB A to Mini B Cable o Acrylic Board 3mm and 1 5mm o Quick Start Guide o System CD Figure 1 2 shows the photograph of the C...

Страница 7: ...A 1 408 943 2600 Ext 8 International Support Link www cypress com go support Terasic Technologies provides design consulting services to customers in electronic system development to help accelerate t...

Страница 8: ...diagram and components 6 2 1 2 1 Layout and Components Layout and Components The picture of the CapSense Matrix Button Keypad board is shown in Figure 2 1 and Figure 2 2 It depicts the layout of the...

Страница 9: ...ram bottom view Note For jumper setting and description please refer to Section 2 4 7 2 2 2 2 Block Diagram of the CapSense Matrix Button Keypad Block Diagram of the CapSense Matrix Button Keypad Figu...

Страница 10: ...ng properly To power up the board 1 Connect the USB A to Mini B cable to a USB Type A host port and to the board The power LED D17 should immediately turn on Alternatively the board can be powered on...

Страница 11: ...g and Description Jumper Default Setting Description J4 Connects the shield electrode to either GND or PSoC pin J6 To drive the buzzer feature of the board It will beep once on every button press J7 T...

Страница 12: ...J15 Configure the Scan Rate HW Strap feature J16 Configure the ARST HW Strap feature 10...

Страница 13: ...ix solutions using an output truth table described later For demonstration purposes these pins are connected to LEDs LEDs The CapSense Matrix Solution board consists of 16 red LEDs above the 4 x 4 Mat...

Страница 14: ...4x4 16 button solutions The dots indicate the connected terminals corresponding to the row and column LEDs illustrated above The associated button location 1 16 is shown in Figure 3 2 The following G...

Страница 15: ...Table 3 1 Names and Description of the 5 pin Header Figure 3 2 Button Location 13...

Страница 16: ...CapSense Matrix Button Keypad board contains an audio beep buzzer for an audible beep feedback for any button press 4x4 Matrix type Capacitive Touch Buttons 4x4 16 CapSense buttons are connected and...

Страница 17: ...unication plus one GPO for generating an interrupt for host controller The GPO header share pin connection with LED interface as a result only one can be used Figure 3 4 shows the block diagram for th...

Страница 18: ...hrough 5V power of the USB Type mini AB connector or the ISSP Programming header The DC voltage is then stepped down to a regulator providing 3 3V Power Distribution System Figure 3 5 shows the power...

Страница 19: ...sions of PSoC Programmer cannot be installed on the same computer Un install any previous version Installing from PSoC Programmer CD ROM 1 Place the System CD ROM in your CD ROM drive 2 At the setup s...

Страница 20: ...ressed active for more than 5 20 or 40 seconds the device resets the key Scan Rate The firmware reads resistor values and reset sets the scan rate of the CapSense device Scan Rate configuration 1 Pin...

Страница 21: ...9 D De em mo on ns st tr ra at ti io on n S Se et tu up p Power on the board using an USB A to Mini B cable included Check the functionality and demonstration features by adjusting the jumper settings...

Страница 22: ...e you can get help if you encounter problems Terasic Technologies Cypress Semiconductor Tel 1 800 541 4736 Ext 8 in the USA 1 408 943 2600 Ext 8 International Support Link www cypress com go support T...

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