Java Port.open方法代码示例

import lejos.hardware.port.Port; //导入方法依赖的package包/类
/**
 * Reset all motors to zero power and float state
 * and reset tacho counts
 */
public static void resetMotors() {
    for ( String portName : new String[] {
        "A",
        "B",
        "C",
        "D"
    } ) {
        Port p = LocalEV3.get().getPort(portName);
        TachoMotorPort mp = p.open(TachoMotorPort.class);
        mp.controlMotor(0, BasicMotorPort.FLOAT);
        mp.resetTachoCount();
        mp.close();
    }
}
 

import lejos.hardware.port.Port; //导入方法依赖的package包/类
/**
 * Create the sensor using the specified port. Configure the hardware as required.
 * @param port port the sensor is attached to
 * @param address I2C address
 * @param type type of I2C sensor
 */
public I2CSensor(Port port, int address, int type)
{
       this(port.open(I2CPort.class), address);
       releaseOnClose(this.port);
	// Set the EV3 pins up.
	if (type == TYPE_LOWSPEED_9V)
	    this.port.setPinMode(EV3SensorConstants.CMD_SET | EV3SensorConstants.CMD_PIN1);
	else
           this.port.setPinMode(EV3SensorConstants.CMD_SET);
}
 

import lejos.hardware.port.Port; //导入方法依赖的package包/类
/**
 * Use this constructor to assign a variable of type motor connected to a particular port.
 * @param port  to which this motor is connected
 */
public NXTRegulatedMotor(Port port)
{
    this(port.open(TachoMotorPort.class));
    releaseOnClose(tachoPort);
}
 

import lejos.hardware.port.Port; //导入方法依赖的package包/类
public RCXMotor(Port port)
{
    this(port.open(BasicMotorPort.class));
    releaseOnClose(this.port);
}
 

import lejos.hardware.port.Port; //导入方法依赖的package包/类
/**
 * Create the sensor object and switch to the selected mode
 * @param port The port the sensor is attached to.
 * @param mode Operating mode for the sensor.
 */
public UARTSensor(Port port, int mode)
{
    this(port.open(UARTPort.class), mode);
    releaseOnClose(this.port);
}
 

import lejos.hardware.port.Port; //导入方法依赖的package包/类
public AnalogSensor(Port p)
{
    this(p.open(AnalogPort.class));
    releaseOnClose(this.port);
}
 

import lejos.hardware.port.Port; //导入方法依赖的package包/类
/**
 * Create an instance of a NXTMotor using the specified motor port and
 * PWM operating mode.
 * @param port The motor port that the motor will be attached to.
 * @param PWMMode see {@link lejos.hardware.port.BasicMotorPort#PWM_FLOAT} and see {@link lejos.hardware.port.BasicMotorPort#PWM_BRAKE}
 */
public NXTMotor(Port port, int PWMMode)
{
    this(port.open(TachoMotorPort.class), PWMMode);
    releaseOnClose(this.port);
}