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RGB China LED zum leuchten bringen:
Digital 3 gpio ausgänge an LED schliessen und spielen:
// create gpio controller
final GpioController gpio = GpioFactory.getInstance();
// provision gpio pin #01 as an output pin and turn on
final GpioPinDigitalOutput gpio1 = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_01, "Rot_Pin6_rechts", PinState.LOW);
final GpioPinDigitalOutput gpio2 = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_02, "Blau_Pin7_Links", PinState.HIGH);
final GpioPinDigitalOutput gpio3 = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_03, "Gruen_Pin8_Links", PinState.HIGH);
gpio1.setShutdownOptions(Boolean.TRUE, PinState.HIGH);
gpio2.setShutdownOptions(Boolean.TRUE, PinState.LOW);
gpio3.setShutdownOptions(Boolean.TRUE, PinState.LOW);
System.out.println("gpio1 :" + gpio1.getPin() + ", name: " + gpio1.getName() + ", mode: " + gpio1.getPin());
System.out.println("gpio2 :" + gpio2.getPin() + ", name: " + gpio2.getName() + ", mode: " + gpio2.getMode());
System.out.println("gpio3 :" + gpio3.getPin() + ", name: " + gpio3.getName() + ", mode: " + gpio3.getMode());
for (;;) {
Thread.sleep(1000);
}
---------------------
Interessant für spätere sessions:
http://aruljohn.com/blog/raspberrypi-christmas-lights-rgb-led/
Das gleiche nochmal in Analog:
public static void testPWM() {
try {
// initialize wiringPi library
com.pi4j.wiringpi.Gpio.wiringPiSetup();
// create soft-pwm pins (min=0 ; max=100)
SoftPwm.softPwmCreate(1, 0, 100);
SoftPwm.softPwmCreate(2, 0, 100);
SoftPwm.softPwmCreate(3, 0, 100);
// continuous loop
while (true) {
for (int y=1;y<4;y++){
System.out.println(" 0% start, pin " + y);
// fade LED to fully ON
for (int i = 0; i <= 100; i++) {
SoftPwm.softPwmWrite(y, i);
Thread.sleep(100);
}
System.out.println(" 100% erreicht");
// fade LED to fully OFF
for (int i = 100; i >= 0; i--) {
SoftPwm.softPwmWrite(y, i);
Thread.sleep(100);
}
System.out.println(" 0% erreicht");
}
}
} catch (Exception e) {
System.out.println("Exception: " + e.getMessage());
}
}
System Infos:
http://pi4j.com/example/system-info.html
http://raspberrypi.stackexchange.com/questions/14831/pi4j-changing-gpios-from-and-to-input-low-and-high
https://www.google.de/search?q=provisionDigitalMultipurposePin+PWM&oq=provisionDigitalMultipurposePin+PWM&aqs=chrome..69i57.3616j0j7&sourceid=chrome&es_sm=93&ie=UTF-8
Super seite SoftPWM + MultipurposePin:
https://github.com/MyRobotLab/myrobotlab/blob/master/src/org/myrobotlab/service/RasPi.java
Aktiver Buzzer anleitung:
http://developer-blog.net/hardware/raspberrypi/raspberry-pi-aktiver-buzzer/
Versuch den Buzzer anzusprechen - ohne Erfolg:
public static void testBuzzer() throws InterruptedException {
// create gpio controller
final GpioController gpio = GpioFactory.getInstance();
GpioPinDigitalOutput gpio4 = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_04, "Pin8_rechts", PinState.HIGH);
gpio4.setShutdownOptions(Boolean.TRUE, PinState.LOW);
for (int i=0;i<10;i++) {
System.out.println("start " + i);
gpio4.high();
Thread.sleep(1000);
gpio4.setState(PinState.HIGH);
Thread.sleep(1000);
System.out.println("ende " + i);
}
try {
// initialize wiringPi library
com.pi4j.wiringpi.Gpio.wiringPiSetup();
// create soft-pwm pins (min=0 ; max=100)
SoftPwm.softPwmCreate(4, 0, 100);
// continuous loop
while (true) {
System.out.println("start");
SoftPwm.softPwmWrite(4, 100); //buzzer
Thread.sleep(5000);
System.out.println("done");
}
} catch (Exception e) {
System.out.println("Exception: " + e.getMessage());
}
}
