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Raspberry Pi+Spring Boot + Pi4J で 信号機 WebAPI を簡単に作成してみる ref: http://qiita.com/hase5021/items/7905638abaf30684de69
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<dependencies> | |
<dependency> | |
<groupId>org.springframework.boot</groupId> | |
<artifactId>spring-boot-starter-web</artifactId> | |
</dependency> | |
<dependency> | |
<groupId>org.springframework.boot</groupId> | |
<artifactId>spring-boot-starter-test</artifactId> | |
<scope>test</scope> | |
</dependency> | |
<dependency> | |
<groupId>com.pi4j</groupId> | |
<artifactId>pi4j-core</artifactId> | |
<version>1.0</version> | |
</dependency> | |
</dependencies> |
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import com.pi4j.io.gpio.*; | |
import org.springframework.web.bind.annotation.RequestMapping; | |
import org.springframework.web.bind.annotation.RestController; | |
@RestController | |
public class TrafficLightController { | |
private GpioController gpio; | |
private GpioPinDigitalOutput pinRed; | |
private GpioPinDigitalOutput pinYellow; | |
private GpioPinDigitalOutput pinGreen; | |
/** | |
* GPIOピン初期化処理 | |
*/ | |
private void initialize() { | |
if (gpio == null) { | |
gpio = GpioFactory.getInstance(); | |
pinGreen = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_27, "GreenLED", PinState.LOW); | |
pinYellow = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_28, "YellowLED", PinState.LOW); | |
pinRed = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_29, "RedLED", PinState.LOW); | |
} | |
pinGreen.low(); | |
pinYellow.low(); | |
pinRed.low(); | |
} | |
/** | |
* 全灯:緑・黄・赤 | |
*/ | |
@RequestMapping("/") | |
public void all() { | |
initialize(); | |
pinRed.high(); | |
pinYellow.high(); | |
pinGreen.high(); | |
} | |
/** | |
* 点灯:緑 | |
*/ | |
@RequestMapping("/green") | |
public void green() { | |
initialize(); | |
pinGreen.high(); | |
} | |
/** | |
* 点灯:黄 | |
*/ | |
@RequestMapping("/yellow") | |
public void yellow() { | |
initialize(); | |
pinYellow.high(); | |
} | |
/** | |
* 点灯:赤 | |
*/ | |
@RequestMapping("/red") | |
public void red() { | |
initialize(); | |
pinRed.high(); | |
} | |
} |
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