gnu.io

类 NRSerialPort

java.lang.Object

gnu.io.NRSerialPort

public class NRSerialPort
extends Object

构造器概要

构造器

构造器和说明
NRSerialPort(String port, int baud) Class Constructor for a NRSerialPort with a given port and baudrate.

方法概要

限定符和类型	方法和说明
void	addEventListener(SerialPortEventListener lsnr)
boolean	connect()
void	disconnect()
int	enableRs485(boolean busEnableActiveLow, int delayBusEnableBeforeSendMs, int delayBusEnableAfterSendMs) Enables RS485 half-duplex bus communication for Linux.
static Set<String>	getAvailableSerialPorts()
int	getBaud()
InputStream	getInputStream()
OutputStream	getOutputStream()
RXTXPort	getSerialPortInstance() Gets the SerialPort instance.
boolean	isConnected()
void	notifyOnDataAvailable(boolean b)
void	removeEventListener()
void	setBaud(int baud)
void	setConnected(boolean connected)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

NRSerialPort

public NRSerialPort(String port,
                    int baud)

Class Constructor for a NRSerialPort with a given port and baudrate.

参数:

port - the port to connect to (i.e. COM6 or /dev/ttyUSB0)

baud - the baudrate to use (i.e. 9600 or 115200)

方法详细资料

connect

public boolean connect()

getInputStream

public InputStream getInputStream()

getOutputStream

public OutputStream getOutputStream()

disconnect

public void disconnect()

getAvailableSerialPorts

public static Set<String> getAvailableSerialPorts()

isConnected

public boolean isConnected()

setConnected

public void setConnected(boolean connected)

setBaud

public void setBaud(int baud)

getBaud

public int getBaud()

enableRs485

public int enableRs485(boolean busEnableActiveLow,
                       int delayBusEnableBeforeSendMs,
                       int delayBusEnableAfterSendMs)

Enables RS485 half-duplex bus communication for Linux. The Linux kernel uses the RTS pin as bus enable. If you use a device that is configured via the Linux device tree, take care to add "uart-has-rtscts" and to configure the RTS GPIO correctly. Before enabling RS485, the serial port must be connected/opened. See also:

• https://www.kernel.org/doc/Documentation/serial/serial-rs485.txt
• https://www.kernel.org/doc/Documentation/devicetree/bindings/serial/serial.txt

参数:

busEnableActiveLow - true, if the bus enable signal (RTS) shall be low during transmission

delayBusEnableBeforeSendMs - delay of bus enable signal (RTS) edge to first data edge in ms (not supported by all serial drivers)

delayBusEnableAfterSendMs - delay of bus enable signal (RTS) edge after end of transmission in ms (not supported by all serial drivers)

返回:

the ioctl() return value

notifyOnDataAvailable

public void notifyOnDataAvailable(boolean b)

addEventListener

public void addEventListener(SerialPortEventListener lsnr)
                      throws TooManyListenersException

抛出:

TooManyListenersException

removeEventListener

public void removeEventListener()

getSerialPortInstance

public RXTXPort getSerialPortInstance()

Gets the SerialPort instance. This will return null until connect() is successfully called.

返回:

The SerialPort instance or null.