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- import com.pi4j.io.gpio.GpioController;
- import com.pi4j.io.gpio.GpioFactory;
- import com.pi4j.io.gpio.GpioPinDigitalOutput;
- import com.pi4j.io.gpio.PinState;
- import com.pi4j.io.gpio.RaspiPin;
- /**
- * This example code demonstrates how to perform simple state
- * control of a GPIO pin on the Raspberry Pi.
- *
- * @author Robert Savage
- */
- public class CycleGpioExample
- {
- public static void main(String[] args) throws InterruptedException
- {
- System.out.println("<--Pi4J--> GPIO Cycle Example ... started.");
- // create gpio controller
- GpioController gpio = GpioFactory.getInstance();
- // provision gpio pin #01 as an output pin and turn on
- GpioPinDigitalOutput[] pin = {
- gpio.provisionDigitalOutputPin(RaspiPin.GPIO_08, "MyLED-0", PinState.LOW),
- gpio.provisionDigitalOutputPin(RaspiPin.GPIO_09, "MyLED-1", PinState.LOW),
- gpio.provisionDigitalOutputPin(RaspiPin.GPIO_07, "MyLED-2", PinState.LOW),
- gpio.provisionDigitalOutputPin(RaspiPin.GPIO_11, "MyLED-3", PinState.LOW),
- gpio.provisionDigitalOutputPin(RaspiPin.GPIO_10, "MyLED-4", PinState.LOW),
- gpio.provisionDigitalOutputPin(RaspiPin.GPIO_13, "MyLED-5", PinState.LOW),
- gpio.provisionDigitalOutputPin(RaspiPin.GPIO_12, "MyLED-6", PinState.LOW),
- gpio.provisionDigitalOutputPin(RaspiPin.GPIO_14, "MyLED-7", PinState.LOW)};
- System.out.println("--> GPIO state should be: ON");
- // set shutdown options on all pins
- pin[0].setShutdownOptions(true, PinState.LOW);
- pin[1].setShutdownOptions(true, PinState.LOW);
- pin[2].setShutdownOptions(true, PinState.LOW);
- pin[3].setShutdownOptions(true, PinState.LOW);
- pin[4].setShutdownOptions(true, PinState.LOW);
- pin[5].setShutdownOptions(true, PinState.LOW);
- pin[6].setShutdownOptions(true, PinState.LOW);
- pin[7].setShutdownOptions(true, PinState.LOW);
- while(true)
- {
- for(int index = 0; index <= 7; index++)
- {
- pin[index].pulse(50);
- Thread.sleep(50);
- }
- for(int index = 7; index >= 0; index--)
- {
- pin[index].pulse(50);
- Thread.sleep(50);
- }
- }
- }
- }
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