Serial (Pi4J :: Parent POM 1.2 API)

java.lang.Object
- com.pi4j.jni.Serial

```
public class Serial
extends Object
```
THIS IS CURRENTLY A NO-IMPL STUB. THIS IS WHERE A NEW SERIAL LIBRARY IMPLEMENTATION IS PLANNED.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`BAUD_RATE_110`
`static int`	`BAUD_RATE_115200`
`static int`	`BAUD_RATE_1200`
`static int`	`BAUD_RATE_134`
`static int`	`BAUD_RATE_150`
`static int`	`BAUD_RATE_1800`
`static int`	`BAUD_RATE_19200`
`static int`	`BAUD_RATE_200`
`static int`	`BAUD_RATE_230400`
`static int`	`BAUD_RATE_2400`
`static int`	`BAUD_RATE_300`
`static int`	`BAUD_RATE_38400`
`static int`	`BAUD_RATE_4800`
`static int`	`BAUD_RATE_50`
`static int`	`BAUD_RATE_57600`
`static int`	`BAUD_RATE_600`
`static int`	`BAUD_RATE_75`
`static int`	`BAUD_RATE_9600`
`static int`	`DATA_BITS_5`
`static int`	`DATA_BITS_6`
`static int`	`DATA_BITS_7`
`static int`	`DATA_BITS_8`
`static String`	`DEFAULT_COM_PORT` The default hardware COM port provided via the Raspberry Pi GPIO header.
`static String`	`FIRST_USB_COM_PORT`
`static int`	`FLOW_CONTROL_HARDWARE`
`static int`	`FLOW_CONTROL_NONE`
`static int`	`FLOW_CONTROL_SOFTWARE`
`static int`	`PARITY_EVEN`
`static int`	`PARITY_MARK`
`static int`	`PARITY_NONE`
`static int`	`PARITY_ODD`
`static int`	`PARITY_SPACE`
`static String`	`SECOND_USB_COM_PORT`
`static int`	`STOP_BITS_1`
`static int`	`STOP_BITS_2`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static int`	`available(int fd)` Returns the number of characters available for reading, or -1 for any error condition, in which case errno will be set appropriately.
`static void`	`close(int fd)` Closes the serial port/device identified by the file descriptor.
`static void`	`discardAll(int fd)` Discards all data in the serial transmit and receive buffers.
`static void`	`discardInput(int fd)` Discards all data in the serial receive and transmit buffer.
`static void`	`discardOutput(int fd)` Discards all data in the serial transmit buffer.
`static void`	`flush(int fd)` Forces (drains) all data in transmit buffers.
`static boolean`	`getCD(int fd)` Get the CD (carrier-detect) pin state.
`static boolean`	`getCTS(int fd)` Get the CST (clear-to-send) pin state.
`static boolean`	`getDSR(int fd)` Get the DSR (data-set-ready) pin state.
`static boolean`	`getDTR(int fd)` Get the DTR (data-terminal-ready) pin state.
`static boolean`	`getRI(int fd)` Get the RI (ring-indicator) pin state.
`static boolean`	`getRTS(int fd)` Get the RTS (request-to-send) pin state.
`static int`	`open(String device, int baud)` This opens and initializes the serial device and sets the communication parameters.
`static int`	`open(String device, int baud, int dataBits)` This opens and initializes the serial device and sets the communication parameters.
`static int`	`open(String device, int baud, int dataBits, int parity)` This opens and initializes the serial port/device and sets the communication parameters.
`static int`	`open(String device, int baud, int dataBits, int parity, int stopBits)` This opens and initializes the serial port/device and sets the communication parameters.
`static int`	`open(String device, int baud, int dataBits, int parity, int stopBits, int flowControl)` This opens and initializes the serial port/device and sets the communication parameters.
`static byte[]`	`read(int fd)` Reads all available bytes from the serial port/device.
`static void`	`read(int fd, ByteBuffer buffer)` Reads all available bytes from the serial device into a provided ByteBuffer.
`static CharBuffer`	`read(int fd, Charset charset)` Reads all available bytes from the port/serial device.
`static void`	`read(int fd, Charset charset, Writer writer)` Reads all available bytes from the serial port/device into a provided Writer.
`static void`	`read(int fd, Collection<ByteBuffer> collection)` Reads all available bytes from the serial port/device into a provided collection of ByteBuffer objects.
`static byte[]`	`read(int fd, int length)` Reads a length of bytes from the port/serial device.
`static void`	`read(int fd, int length, ByteBuffer buffer)` Reads a length bytes from the serial port/device into a provided ByteBuffer.
`static CharBuffer`	`read(int fd, int length, Charset charset)` Reads a length of bytes from the port/serial device.
`static void`	`read(int fd, int length, Charset charset, Writer writer)` Reads a length bytes from the serial port/device into a provided Writer.
`static void`	`read(int fd, int length, Collection<ByteBuffer> collection)` Reads a length of bytes from the serial port/device into a provided collection of ByteBuffer objects.
`static void`	`read(int fd, int length, OutputStream stream)` Reads a length bytes from the serial port/device into a provided OutputStream.
`static void`	`read(int fd, OutputStream stream)` Reads all available bytes from the serial device into a provided OutputStream.
`static void`	`sendBreak(int fd)` Send a BREAK signal to connected device for at least 0.25 seconds, and not more than 0.5 seconds
`static void`	`sendBreak(int fd, int duration)` Send a BREAK signal to connected device.
`static void`	`setBreak(int fd, boolean enabled)` Send a constant BREAK signal to connected device.
`static void`	`setDTR(int fd, boolean enabled)` Control the DTR (data-terminal-ready) pin state.
`static void`	`setRTS(int fd, boolean enabled)` Control the RTS (request-to-send) pin state.
`static void`	`write(int fd, byte... data)` Sends one of more bytes to the serial device identified by the given file descriptor.
`static void`	`write(int fd, byte[]... data)` Sends one of more bytes arrays to the serial device identified by the given file descriptor.
`static void`	`write(int fd, byte[] data, int offset, int length)` Sends an array of bytes to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, ByteBuffer... data)` Read the content of byte buffer and write the data to the serial port transmit buffer.
`static void`	`write(int fd, char... data)` Sends an array of ASCII characters to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, CharBuffer... data)` Sends one or more ASCII CharBuffers to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, CharSequence... data)` Sends one or more ASCII string objects to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, Charset charset, char... data)` Sends an array of characters to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, Charset charset, char[] data, int offset, int length)` Sends an array of characters to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, Charset charset, CharBuffer... data)` Sends one or more CharBuffers to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, Charset charset, CharSequence... data)` Sends one or more string objects to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, Charset charset, Collection<? extends CharSequence> data)` Sends a collection of string objects to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, Collection<? extends CharSequence> data)` Sends a collection of ASCII string objects to the serial port/device identified by the given file descriptor.
`static void`	`write(int fd, InputStream input)` Read content from an input stream of data and write it to the serial port transmit buffer.
`static void`	`writeln(int fd, CharSequence... data)` Sends one or more ASCII string objects each appended with a line terminator (CR+LF) to the serial port/device.
`static void`	`writeln(int fd, Charset charset, CharSequence... data)` Sends one or more string objects each appended with a line terminator (CR+LF) to the serial port/device.
`static void`	`writeln(int fd, Charset charset, Collection<? extends CharSequence> data)` Sends a collection of string objects each appended with a line terminator (CR+LF) to the serial port/device.
`static void`	`writeln(int fd, Collection<? extends CharSequence> data)` Sends a collection of ASCII string objects each appended with a line terminator (CR+LF) to the serial port/device.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEFAULT_COM_PORT
```
public static final String DEFAULT_COM_PORT
```
    The default hardware COM port provided via the Raspberry Pi GPIO header.
    
    See Also:
    
    open(String,int), Constant Field Values
  - FIRST_USB_COM_PORT
```
public static final String FIRST_USB_COM_PORT
```
    See Also:
    
    Constant Field Values
  - SECOND_USB_COM_PORT
```
public static final String SECOND_USB_COM_PORT
```
    See Also:
    
    Constant Field Values
  - BAUD_RATE_50
```
public static int BAUD_RATE_50
```
  - BAUD_RATE_75
```
public static int BAUD_RATE_75
```
  - BAUD_RATE_110
```
public static int BAUD_RATE_110
```
  - BAUD_RATE_134
```
public static int BAUD_RATE_134
```
  - BAUD_RATE_150
```
public static int BAUD_RATE_150
```
  - BAUD_RATE_200
```
public static int BAUD_RATE_200
```
  - BAUD_RATE_300
```
public static int BAUD_RATE_300
```
  - BAUD_RATE_600
```
public static int BAUD_RATE_600
```
  - BAUD_RATE_1200
```
public static int BAUD_RATE_1200
```
  - BAUD_RATE_1800
```
public static int BAUD_RATE_1800
```
  - BAUD_RATE_2400
```
public static int BAUD_RATE_2400
```
  - BAUD_RATE_4800
```
public static int BAUD_RATE_4800
```
  - BAUD_RATE_9600
```
public static int BAUD_RATE_9600
```
  - BAUD_RATE_19200
```
public static int BAUD_RATE_19200
```
  - BAUD_RATE_38400
```
public static int BAUD_RATE_38400
```
  - BAUD_RATE_57600
```
public static int BAUD_RATE_57600
```
  - BAUD_RATE_115200
```
public static int BAUD_RATE_115200
```
  - BAUD_RATE_230400
```
public static int BAUD_RATE_230400
```
  - PARITY_NONE
```
public static int PARITY_NONE
```
  - PARITY_ODD
```
public static int PARITY_ODD
```
  - PARITY_EVEN
```
public static int PARITY_EVEN
```
  - PARITY_MARK
```
public static int PARITY_MARK
```
  - PARITY_SPACE
```
public static int PARITY_SPACE
```
  - DATA_BITS_5
```
public static int DATA_BITS_5
```
  - DATA_BITS_6
```
public static int DATA_BITS_6
```
  - DATA_BITS_7
```
public static int DATA_BITS_7
```
  - DATA_BITS_8
```
public static int DATA_BITS_8
```
  - STOP_BITS_1
```
public static int STOP_BITS_1
```
  - STOP_BITS_2
```
public static int STOP_BITS_2
```
  - FLOW_CONTROL_NONE
```
public static int FLOW_CONTROL_NONE
```
  - FLOW_CONTROL_HARDWARE
```
public static int FLOW_CONTROL_HARDWARE
```
  - FLOW_CONTROL_SOFTWARE
```
public static int FLOW_CONTROL_SOFTWARE
```
- Method Detail
  - open
```
public static int open(String device,
                       int baud,
                       int dataBits,
                       int parity,
                       int stopBits,
                       int flowControl)
                throws IOException
```
    This opens and initializes the serial port/device and sets the communication parameters. It sets the port into raw mode (character at a time and no translations).
    
    (ATTENTION: the 'device' argument can only be a maximum of 128 characters.)
    
    Parameters:
    
    device - The device address of the serial port to access. You can use constant 'DEFAULT_COM_PORT' if you wish to access the default serial port provided via the GPIO header.
    
    baud - The baud rate to use with the serial port. (Custom baud rate are not supported)
    
    dataBits - The data bits to use for serial communication. (5,6,7,8)
    
    parity - The parity setting to use for serial communication. (None, Event, Odd, Mark, Space)
    
    stopBits - The stop bits to use for serial communication. (1,2)
    
    flowControl - The stop bits to use for serial communication. (none, hardware, software)
    
    Returns:
    
    The return value is the file descriptor or a negative value for any error. An IOException will be thrown for all error conditions.
    
    Throws:
    
    IOException
    
    See Also:
    
    DEFAULT_COM_PORT
  - open
```
public static int open(String device,
                       int baud,
                       int dataBits,
                       int parity,
                       int stopBits)
                throws IOException
```
    This opens and initializes the serial port/device and sets the communication parameters. It sets the port into raw mode (character at a time and no translations). The following default serial communications parameters are applied using this overloaded method instance: flow control = FLOW_CONTROL_NONE
    
    (ATTENTION: the 'device' argument can only be a maximum of 128 characters.)
    
    Parameters:
    
    device - The device address of the serial port to access. You can use constant 'DEFAULT_COM_PORT' if you wish to access the default serial port provided via the GPIO header.
    
    baud - The baud rate to use with the serial port. (Custom baud rate are not supported)
    
    dataBits - The data bits to use for serial communication. (5,6,7,8)
    
    parity - The parity setting to use for serial communication. (None, Event, Odd, Mark, Space)
    
    stopBits - The stop bits to use for serial communication. (1,2)
    
    Returns:
    
    The return value is the file descriptor or a negative value for any error. An IOException will be thrown for all error conditions.
    
    Throws:
    
    IOException
    
    See Also:
    
    DEFAULT_COM_PORT, FLOW_CONTROL_NONE
  - open
```
public static int open(String device,
                       int baud,
                       int dataBits,
                       int parity)
                throws IOException
```
    This opens and initializes the serial port/device and sets the communication parameters. It sets the port into raw mode (character at a time and no translations). The following default serial communications parameters are applied using this overloaded method instance: stop bits = STOP_BITS_1 flow control = FLOW_CONTROL_NONE
    
    (ATTENTION: the 'device' argument can only be a maximum of 128 characters.)
    
    Parameters:
    
    device - The device address of the serial port to access. You can use constant 'DEFAULT_COM_PORT' if you wish to access the default serial port provided via the GPIO header.
    
    baud - The baud rate to use with the serial port. (Custom baud rate are not supported)
    
    dataBits - The data bits to use for serial communication. (5,6,7,8)
    
    Returns:
    
    The return value is the file descriptor or a negative value for any error. An IOException will be thrown for all error conditions.
    
    Throws:
    
    IOException
    
    See Also:
    
    DEFAULT_COM_PORT, STOP_BITS_1, FLOW_CONTROL_NONE
  - open
```
public static int open(String device,
                       int baud,
                       int dataBits)
                throws IOException
```
    This opens and initializes the serial device and sets the communication parameters. It sets the port into raw mode (character at a time and no translations). The following default serial communications parameters are applied using this overloaded method instance: parity = PARITY_NONE stop bits = STOP_BITS_1 flow control = FLOW_CONTROL_NONE
    
    (ATTENTION: the 'device' argument can only be a maximum of 128 characters.)
    
    Parameters:
    
    device - The device address of the serial port to access. You can use constant 'DEFAULT_COM_PORT' if you wish to access the default serial port provided via the GPIO header.
    
    baud - The baud rate to use with the serial port. (Custom baud rate are not supported)
    
    dataBits - The data bits to use for serial communication. (5,6,7,8)
    
    Returns:
    
    The return value is the file descriptor or a negative value for any error. An IOException will be thrown for all error conditions.
    
    Throws:
    
    IOException
    
    See Also:
    
    DEFAULT_COM_PORT, PARITY_NONE, STOP_BITS_1, FLOW_CONTROL_NONE
  - open
```
public static int open(String device,
                       int baud)
                throws IOException
```
    This opens and initializes the serial device and sets the communication parameters. It sets the port into raw mode (character at a time and no translations). The following default serial communications parameters are applied using this overloaded method instance: data bits = DATA_BITS_8 parity = PARITY_NONE stop bits = STOP_BITS_1 flow control = FLOW_CONTROL_NONE
    
    (ATTENTION: the 'device' argument can only be a maximum of 128 characters.)
    
    Parameters:
    
    device - The device address of the serial port to access. You can use constant 'DEFAULT_COM_PORT' if you wish to access the default serial port provided via the GPIO header.
    
    baud - The baud rate to use with the serial port. (Custom baud rate are not supported)
    
    Returns:
    
    The return value is the file descriptor or a negative value for any error. An IOException will be thrown for all error conditions.
    
    Throws:
    
    IOException
    
    See Also:
    
    DEFAULT_COM_PORT, DATA_BITS_8, PARITY_NONE, STOP_BITS_1, FLOW_CONTROL_NONE
  - close
```
public static void close(int fd)
                  throws IOException
```
    Closes the serial port/device identified by the file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - discardInput
```
public static void discardInput(int fd)
                         throws IOException
```
    Discards all data in the serial receive and transmit buffer. Please note that this does not force the transmission of data, it discards it!
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - discardOutput
```
public static void discardOutput(int fd)
                          throws IOException
```
    Discards all data in the serial transmit buffer. Please note that this does not force the transmission of data, it discards it!
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - discardAll
```
public static void discardAll(int fd)
                       throws IOException
```
    Discards all data in the serial transmit and receive buffers. Please note that this does not force the transmission of data, it discards it!
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - flush
```
public static void flush(int fd)
                  throws IOException
```
    Forces (drains) all data in transmit buffers.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - sendBreak
```
public static void sendBreak(int fd,
                             int duration)
                      throws IOException
```
    Send a BREAK signal to connected device.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    duration - The length of time (milliseconds) to send the BREAK signal
    
    Throws:
    
    IOException
  - sendBreak
```
public static void sendBreak(int fd)
                      throws IOException
```
    Send a BREAK signal to connected device for at least 0.25 seconds, and not more than 0.5 seconds
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - setBreak
```
public static void setBreak(int fd,
                            boolean enabled)
                     throws IOException
```
    Send a constant BREAK signal to connected device. (Turn break on/off) When enabled this will send a steady stream of zero bits. When enabled, no (other) data transmitting is possible.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    enabled - The enable or disable state to control the BREAK signal
    
    Throws:
    
    IOException
  - setRTS
```
public static void setRTS(int fd,
                          boolean enabled)
                   throws IOException
```
    Control the RTS (request-to-send) pin state. When enabled this will set the RTS pin to the HIGH state.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    enabled - The enable or disable state to control the RTS pin state.
    
    Throws:
    
    IOException
  - setDTR
```
public static void setDTR(int fd,
                          boolean enabled)
                   throws IOException
```
    Control the DTR (data-terminal-ready) pin state. When enabled this will set the DTR pin to the HIGH state.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    enabled - The enable or disable state to control the RTS pin state.
    
    Throws:
    
    IOException
  - getRTS
```
public static boolean getRTS(int fd)
                      throws IOException
```
    Get the RTS (request-to-send) pin state.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - getDTR
```
public static boolean getDTR(int fd)
                      throws IOException
```
    Get the DTR (data-terminal-ready) pin state.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - getCTS
```
public static boolean getCTS(int fd)
                      throws IOException
```
    Get the CST (clear-to-send) pin state.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - getDSR
```
public static boolean getDSR(int fd)
                      throws IOException
```
    Get the DSR (data-set-ready) pin state.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - getRI
```
public static boolean getRI(int fd)
                     throws IOException
```
    Get the RI (ring-indicator) pin state.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - getCD
```
public static boolean getCD(int fd)
                     throws IOException
```
    Get the CD (carrier-detect) pin state.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Throws:
    
    IOException
  - available
```
public static int available(int fd)
```
    Returns the number of characters available for reading, or -1 for any error condition, in which case errno will be set appropriately.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Returns:
    
    Returns the number of characters available for reading, or -1 for any error
  - read
```
public static byte[] read(int fd)
                   throws IOException
```
    Reads all available bytes from the serial port/device.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    Returns:
    
    Returns a byte array with the data read from the serial port.
    
    Throws:
    
    IOException
  - read
```
public static byte[] read(int fd,
                          int length)
                   throws IOException
```
    Reads a length of bytes from the port/serial device.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    length - The number of bytes to get from the serial port/device. This number must not be higher than the number of available bytes.
    
    Returns:
    
    Returns a byte array with the data read from the serial port.
    
    Throws:
    
    IOException
  - read
```
public static void read(int fd,
                        ByteBuffer buffer)
                 throws IOException
```
    Reads all available bytes from the serial device into a provided ByteBuffer.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    buffer - The ByteBuffer object to write to.
    
    Throws:
    
    IOException
  - read
```
public static void read(int fd,
                        int length,
                        ByteBuffer buffer)
                 throws IOException
```
    Reads a length bytes from the serial port/device into a provided ByteBuffer.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    length - The number of bytes to get from the serial port/device. This number must not be higher than the number of available bytes.
    
    buffer - The ByteBuffer object to write to.
    
    Throws:
    
    IOException
  - read
```
public static void read(int fd,
                        OutputStream stream)
                 throws IOException
```
    Reads all available bytes from the serial device into a provided OutputStream.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    stream - The OutputStream object to write to.
    
    Throws:
    
    IOException
  - read
```
public static void read(int fd,
                        int length,
                        OutputStream stream)
                 throws IOException
```
    Reads a length bytes from the serial port/device into a provided OutputStream.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    length - The number of bytes to get from the serial port/device. This number must not be higher than the number of available bytes.
    
    stream - The OutputStream object to write to.
    
    Throws:
    
    IOException
  - read
```
public static void read(int fd,
                        Collection<ByteBuffer> collection)
                 throws IOException
```
    Reads all available bytes from the serial port/device into a provided collection of ByteBuffer objects.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    collection - The collection of CharSequence objects to append to.
    
    Throws:
    
    IOException
  - read
```
public static void read(int fd,
                        int length,
                        Collection<ByteBuffer> collection)
                 throws IOException
```
    Reads a length of bytes from the serial port/device into a provided collection of ByteBuffer objects.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    length - The number of bytes to get from the serial port/device. This number must not be higher than the number of available bytes.
    
    collection - The collection of CharSequence objects to append to.
    
    Throws:
    
    IOException
  - read
```
public static CharBuffer read(int fd,
                              Charset charset)
                       throws IOException
```
    Reads all available bytes from the port/serial device.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    Returns:
    
    Returns a character set with the data read from the serial port.
    
    Throws:
    
    IOException
  - read
```
public static CharBuffer read(int fd,
                              int length,
                              Charset charset)
                       throws IOException
```
    Reads a length of bytes from the port/serial device.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    length - The number of bytes to get from the serial port/device. This number must not be higher than the number of available bytes.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    Returns:
    
    Returns a character set with the data read from the serial port.
    
    Throws:
    
    IOException
  - read
```
public static void read(int fd,
                        Charset charset,
                        Writer writer)
                 throws IOException
```
    Reads all available bytes from the serial port/device into a provided Writer.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    writer - The Writer object to write to.
    
    Throws:
    
    IOException
  - read
```
public static void read(int fd,
                        int length,
                        Charset charset,
                        Writer writer)
                 throws IOException
```
    Reads a length bytes from the serial port/device into a provided Writer.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    length - The number of bytes to get from the serial port/device. This number must not be higher than the number of available bytes.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    writer - The Writer object to write to.
    
    Throws:
    
    IOException
  - write
```
public static void write(int fd,
                         byte[] data,
                         int offset,
                         int length)
                  throws IOException
```
    Sends an array of bytes to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - A ByteBuffer of data to be transmitted.
    
    offset - The starting index (inclusive) in the array to send from.
    
    length - The number of bytes from the byte array to transmit to the serial port.
    
    Throws:
    
    IOException
  - write
```
public static void write(int fd,
                         byte... data)
                  throws IOException
```
    Sends one of more bytes to the serial device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - One or more bytes (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IOException
  - write
```
public static void write(int fd,
                         byte[]... data)
                  throws IOException
```
    Sends one of more bytes arrays to the serial device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - One or more byte arrays of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IOException
  - write
```
public static void write(int fd,
                         ByteBuffer... data)
                  throws IOException
```
    Read the content of byte buffer and write the data to the serial port transmit buffer. (The buffer is read from the current position up to the 'limit' value, not the 'capacity'. You may need to rewind() or flip() the byte buffer if you have just written to it.)
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - A ByteBuffer of data to be transmitted.
    
    Throws:
    
    IOException
  - write
```
public static void write(int fd,
                         InputStream input)
                  throws IOException
```
    Read content from an input stream of data and write it to the serial port transmit buffer.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    input - An InputStream of data to be transmitted
    
    Throws:
    
    IOException
  - write
```
public static void write(int fd,
                         Charset charset,
                         char[] data,
                         int offset,
                         int length)
                  throws IOException
```
    Sends an array of characters to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    data - An array of chars to be decoded into bytes and transmitted.
    
    offset - The starting index (inclusive) in the array to send from.
    
    length - The number of characters from the char array to transmit to the serial port.
    
    Throws:
    
    IOException
  - write
```
public static void write(int fd,
                         Charset charset,
                         char... data)
                  throws IOException
```
    Sends an array of characters to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    data - One or more characters (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IOException
  - write
```
public static void write(int fd,
                         char... data)
                  throws IOException
```
    Sends an array of ASCII characters to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - One or more ASCII characters (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IOException
  - write
```
public static void write(int fd,
                         Charset charset,
                         CharBuffer... data)
                  throws IllegalStateException,
                         IOException
```
    Sends one or more CharBuffers to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    data - One or more CharBuffers (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException
  - write
```
public static void write(int fd,
                         CharBuffer... data)
                  throws IllegalStateException,
                         IOException
```
    Sends one or more ASCII CharBuffers to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - One or more ASCII CharBuffers (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException
  - write
```
public static void write(int fd,
                         Charset charset,
                         CharSequence... data)
                  throws IllegalStateException,
                         IOException
```
    Sends one or more string objects to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    data - One or more string objects (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException
  - write
```
public static void write(int fd,
                         CharSequence... data)
                  throws IllegalStateException,
                         IOException
```
    Sends one or more ASCII string objects to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - One or more ASCII string objects (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException
  - write
```
public static void write(int fd,
                         Charset charset,
                         Collection<? extends CharSequence> data)
                  throws IllegalStateException,
                         IOException
```
    Sends a collection of string objects to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    data - A collection of string objects (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException
  - write
```
public static void write(int fd,
                         Collection<? extends CharSequence> data)
                  throws IllegalStateException,
                         IOException
```
    Sends a collection of ASCII string objects to the serial port/device identified by the given file descriptor.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - A collection of string objects (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException
  - writeln
```
public static void writeln(int fd,
                           Charset charset,
                           CharSequence... data)
                    throws IllegalStateException,
                           IOException
```
    Sends one or more string objects each appended with a line terminator (CR+LF) to the serial port/device.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    data - One or more string objects (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException
  - writeln
```
public static void writeln(int fd,
                           CharSequence... data)
                    throws IllegalStateException,
                           IOException
```
    Sends one or more ASCII string objects each appended with a line terminator (CR+LF) to the serial port/device.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - One or more ASCII string objects (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException
  - writeln
```
public static void writeln(int fd,
                           Charset charset,
                           Collection<? extends CharSequence> data)
                    throws IllegalStateException,
                           IOException
```
    Sends a collection of string objects each appended with a line terminator (CR+LF) to the serial port/device.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    charset - The character set to use for encoding/decoding bytes to/from text characters
    
    data - A collection of string objects (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException
  - writeln
```
public static void writeln(int fd,
                           Collection<? extends CharSequence> data)
                    throws IllegalStateException,
                           IOException
```
    Sends a collection of ASCII string objects each appended with a line terminator (CR+LF) to the serial port/device.
    
    Parameters:
    
    fd - The file descriptor of the serial port/device.
    
    data - A collection of ASCII string objects (or an array) of data to be transmitted. (variable-length-argument)
    
    Throws:
    
    IllegalStateException
    
    IOException

Class Serial

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_COM_PORT

FIRST_USB_COM_PORT

SECOND_USB_COM_PORT

BAUD_RATE_50

BAUD_RATE_75

BAUD_RATE_110

BAUD_RATE_134

BAUD_RATE_150

BAUD_RATE_200

BAUD_RATE_300

BAUD_RATE_600

BAUD_RATE_1200

BAUD_RATE_1800

BAUD_RATE_2400

BAUD_RATE_4800

BAUD_RATE_9600

BAUD_RATE_19200

BAUD_RATE_38400

BAUD_RATE_57600

BAUD_RATE_115200

BAUD_RATE_230400

PARITY_NONE

PARITY_ODD

PARITY_EVEN

PARITY_MARK

PARITY_SPACE

DATA_BITS_5

DATA_BITS_6

DATA_BITS_7

DATA_BITS_8

STOP_BITS_1

STOP_BITS_2

FLOW_CONTROL_NONE

FLOW_CONTROL_HARDWARE

FLOW_CONTROL_SOFTWARE

Method Detail

open

open

open

open

open

close

discardInput

discardOutput

discardAll

flush

sendBreak

sendBreak

setBreak

setRTS

setDTR

getRTS

getDTR

getCTS

getDSR

getRI

getCD

available

read

read

read

read

read

read

read

read

read

read

read

read

write

write

write

write

write