Rev.: 03 MSP430 LaunchPad (MSP-EXP430G2) with Capacitive Touch BoosterPack (KT35S430-S1) User Guide 1 430BOOST-SENSE1 Overview 1.1 Overview The KT35S430-S1 ITO Capacitive Touch BoosterPack is an extension module for the MSP-EXP430G2 MSP430 LaunchPad Value Line Development Kit (see Figure 1). Figure 1. Capacitive Sense BoosterPack With LaunchPad The ITO Capacitive Sense BoosterPack features the new MSP430G2xxx devices with transparent ITO glass sensor. The BoosterPack includes a converter board and an ITO glass capacitive touch sensor. The user experience application demonstrates capacitive sense as standalone feature by showing the user interaction directly with the onboard LEDs. KT35S430-S1 features: l Single layer of ITO Glass Sensor with high transmittance l 3.5 inch diagonal l Simply applied on any type of LCD displays l 5 function keys l Instant feedback to user interaction by 2 LEDs l Low product cost l Low customization cost - Customization on numbers of keys, key position and FPC 1.2 Kit Contents The KT35S430-S1 kit includes two components: •One ITO Glass Capacitive Touch sensor with five function keys and FPC pinout (Figure 2) •One converter board for connected the ITO glass sensor to the MSP-EXP430G2 MCU board (Figure 3) Figure 2. ITO Glass Capacitive Touch sensor Figure 3. Connector board Rev.: 03 2 Hardware Preparation 2.1. Remove the J3 connections on the LaunchPad to disconnect TXD, and RXD from P1.1 and P1.2. 2.2. Remove the J5 connections on the LaunchPad to disconnect the LaunchPad LEDs from P1.0 and P1.6. 2.3. Remove R34 and C24 on the LaunchPad to disconnect it from P1.3. 2.4. Use the MSP430G2211 device witch come from the LaunchPad Development Kit and insert it in the LaunchPad MCU socket. 2.5. Connect the ITO Capacitive Sensor and the converter board to the LaunchPad with proper orientation by ensuring that the “Kentec Display” text are in the same direction as the text on the Launchpad. 2.6. Connect the LaunchPad with an USB cable to a PC. NOTE: The 32-kHz crystal/oscillator on pins 12 and 13 is not required for the ITO Capacitive Sensor demo. 3 Software Preparation Bellow attachment is the source code for the projects, compile and download it to the LaunchPad. NO. Document 1 Source code package Attachment 4 ITO Capacitive Touch BoosterPack Hardware As shown in Figure 4 and Table 1, the ITO Capacitive Touch BoosterPack is an advance capacitive touch application example for the new MSP430G2xxx touch-sense enabled I/O pins. The demo shows 5 touch button for HMI, In addition, there are two LEDs on the board to give instant feedback to user interaction. Figure 4. ITO Capacitive Sensor Table 1. BoosterPack Interface Description Pin MSP430 Port BoosterPack Signal 1 VCC VCC 2 P1.0 TACLK Input 3 P1.1 CA_Ref 4 P1.2 S1 Touch-sense 1 5 P1.3 S2 Touch-sense 2 6 P1.4 S3 Touch-sense 3 7 P1.5 S4 Touch-sense 4 8 P1.6 S5 Touch-sense 5 9 P1.7 CA_Out 10 RST/SBWTDIO NC Reset line for SBW JTAG data, not connected to BoosterPack 11 TEST/SBWTCK CN Test line for SBW JTAG clock, not connected to BoosterPack 12 P2.6/XOUT LED1 LED1 positive drive 13 P2.7/XIN LED2 LED2 positive drive 14 GND GND Supply ground Supply voltage Timer0_A clock signal input Comparator reference Comparator output Rev.: 03 5 Schematics and PCB Layout 5.1 Schematics 1 2 3 R15 VCC R3 P1 D 1 2 3 4 5 6 7 8 9 10 4 P2 R4 R2 R1 P1.0 P1.1 P1.2/CA2 P1.3/CA3 P1.4/CA4 P1.5/CA5 P2.0 P2.1 P2.2 LED2 1 2 3 4 5 6 7 8 9 10 XIN XOUT TEST RST P1.7/CAOUT P1.6/CA6 P2.5 P2.4 P2.3 LED1 D C C WOUT R5 R6 R7 R8 SOUT R9 R10 R11 R12 R13 R14 CN1 J1 W1 1 2 3 S5 W2 J3 P1.2/CA2 P1.3/CA3 P1.4/CA4 J5 1 2 3 1 2 3 4 5 6 7 8 S1 S2 S3 1 2 3 S4 J2 B W3 S3 WOUT W4 1 2 3 J4 P1.5/CA5 P1.6/CA6 P1.7/CAOUT 1 2 3 J6 S4 S5 SOUT 1 2 3 S2 C6 C7 C8 C9 B C10 W5 S1 C1 C2 C3 C4 C5 Title A Size Number Revision A4 Date: File: 1 2 19-Jul-2011 Sheet of D:\KentecDisplay\Element14\430Booster\PCB\BoosterPad.ddb Drawn By: 3 4 Figure 5. Converter board schematic 5.2 PCB Layout Figure 6. Converter board layout, Top layer Figure 7. Converter board layout, Bottom layer A