Package edu.wpi.first.hal

Class SerialPortJNI

java.lang.Object

edu.wpi.first.hal.JNIWrapper

edu.wpi.first.hal.SerialPortJNI

public class SerialPortJNI
extends JNIWrapper

Serial Port JNI HAL functions.

See Also:

"SerialPort.h"

Nested Class Summary

Nested classes/interfaces inherited from class edu.wpi.first.hal.JNIWrapper

JNIWrapper.Helper

Method Summary

Modifier and Type	Method	Description
static void	serialClear(int handle)	Clears the receive buffer of the serial port.
static void	serialClose(int handle)	Closes a serial port.
static void	serialDisableTermination(int handle)	Disables a termination character for reads.
static void	serialEnableTermination(int handle, char terminator)	Sets the termination character that terminates a read.
static void	serialFlush(int handle)	Flushes the serial write buffer out to the port.
static int	serialGetBytesReceived(int handle)	Gets the number of bytes currently in the read buffer.
static int	serialInitializePort(byte port)	Initializes a serial port.
static int	serialInitializePortDirect(byte port, String portName)	Initializes a serial port with a direct name.
static int	serialRead(int handle, byte[] buffer, int count)	Reads data from the serial port.
static void	serialSetBaudRate(int handle, int baud)	Sets the baud rate of a serial port.
static void	serialSetDataBits(int handle, byte bits)	Sets the number of data bits on a serial port.
static void	serialSetFlowControl(int handle, byte flow)	Sets the flow control mode of a serial port.
static void	serialSetParity(int handle, byte parity)	Sets the number of parity bits on a serial port.
static void	serialSetReadBufferSize(int handle, int size)	Sets the size of the read buffer.
static void	serialSetStopBits(int handle, byte stopBits)	Sets the number of stop bits on a serial port.
static void	serialSetTimeout(int handle, double timeout)	Sets the minimum serial read timeout of a port.
static void	serialSetWriteBufferSize(int handle, int size)	Sets the size of the write buffer.
static void	serialSetWriteMode(int handle, byte mode)	Sets the write mode on a serial port.
static int	serialWrite(int handle, byte[] buffer, int count)	Writes data to the serial port.

Methods inherited from class edu.wpi.first.hal.JNIWrapper

forceLoad, suppressUnused

Methods inherited from class java.lang.Object

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

Method Details

serialInitializePort

public static int serialInitializePort(byte port)

Initializes a serial port.

The channels are either the onboard RS232, the MXP UART, or 2 USB ports. The top port is USB1, the bottom port is USB2.

Parameters:

port - the serial port to initialize

Returns:

Serial Port Handle

See Also:

"HAL_InitializeSerialPort"

serialInitializePortDirect

public static int serialInitializePortDirect(byte port, String portName)

Initializes a serial port with a direct name.

This name is the /dev name for a specific port. Note these are not always consistent between roboRIO reboots.

Parameters:

port - the serial port to initialize

portName - the dev port name

Returns:

Serial Port Handle

See Also:

"HAL_InitializeSerialPortDirect"

serialSetBaudRate

public static void serialSetBaudRate(int handle, int baud)

Sets the baud rate of a serial port.

Any value between 0 and 0xFFFFFFFF may be used. Default is 9600.

Parameters:

handle - the serial port handle

baud - the baud rate to set

See Also:

"HAL_SetSerialBaudRate"

serialSetDataBits

public static void serialSetDataBits(int handle, byte bits)

Sets the number of data bits on a serial port.

Defaults to 8.

Parameters:

handle - the serial port handle

bits - the number of data bits (5-8)

See Also:

"HAL_SetSerialDataBits"

serialSetParity

public static void serialSetParity(int handle, byte parity)

Sets the number of parity bits on a serial port.

Valid values are: 0: None (default) 1: Odd 2: Even 3: Mark - Means exists and always 1 4: Space - Means exists and always 0

Parameters:

handle - the serial port handle

parity - the parity bit mode (see remarks for valid values)

See Also:

"HAL_SetSerialParity"

serialSetStopBits

public static void serialSetStopBits(int handle, byte stopBits)

Sets the number of stop bits on a serial port.

Valid values are: 10: One stop bit (default) 15: One and a half stop bits 20: Two stop bits

Parameters:

handle - the serial port handle

stopBits - the stop bit value (see remarks for valid values)

See Also:

"HAL_SetSerialStopBits"

serialSetWriteMode

public static void serialSetWriteMode(int handle, byte mode)

Sets the write mode on a serial port.

Valid values are: 1: Flush on access 2: Flush when full (default)

Parameters:

handle - the serial port handle

mode - the mode to set (see remarks for valid values)

See Also:

"HAL_SetSerialWriteMode"

serialSetFlowControl

public static void serialSetFlowControl(int handle, byte flow)

Sets the flow control mode of a serial port.

Valid values are: 0: None (default) 1: XON-XOFF 2: RTS-CTS 3: DTR-DSR

Parameters:

handle - the serial port handle

flow - the mode to set (see remarks for valid values)

See Also:

"HAL_SetSerialFlowControl"

serialSetTimeout

public static void serialSetTimeout(int handle, double timeout)

Sets the minimum serial read timeout of a port.

Parameters:

handle - the serial port handle

timeout - the timeout in milliseconds

See Also:

"HAL_SetSerialTimeout"

serialEnableTermination

public static void serialEnableTermination(int handle, char terminator)

Sets the termination character that terminates a read.

By default this is disabled.

Parameters:

handle - the serial port handle

terminator - the termination character to set

See Also:

"HAL_EnableSerialTermination"

serialDisableTermination

public static void serialDisableTermination(int handle)

Disables a termination character for reads.

Parameters:

handle - the serial port handle

See Also:

"HAL_DisableSerialTermination"

serialSetReadBufferSize

public static void serialSetReadBufferSize(int handle, int size)

Sets the size of the read buffer.

Parameters:

handle - the serial port handle

size - the read buffer size

See Also:

"HAL_SetSerialReadBufferSize"

serialSetWriteBufferSize

public static void serialSetWriteBufferSize(int handle, int size)

Sets the size of the write buffer.

Parameters:

handle - the serial port handle

size - the write buffer size

See Also:

"HAL_SetSerialWriteBufferSize"

serialGetBytesReceived

public static int serialGetBytesReceived(int handle)

Gets the number of bytes currently in the read buffer.

Parameters:

handle - the serial port handle

Returns:

the number of bytes in the read buffer

See Also:

"HAL_GetSerialBytesReceived"

serialRead

public static int serialRead(int handle, byte[] buffer, int count)

Reads data from the serial port.

Will wait for either timeout (if set), the termination char (if set), or the count to be full. Whichever one comes first.

Parameters:

handle - the serial port handle

buffer - the buffer in which to store bytes read

count - the number of bytes maximum to read

Returns:

the number of bytes actually read

See Also:

"HAL_ReadSerial"

serialWrite

public static int serialWrite(int handle, byte[] buffer, int count)

Writes data to the serial port.

Parameters:

handle - the serial port handle

buffer - the buffer to write

count - the number of bytes to write from the buffer

Returns:

the number of bytes actually written

See Also:

"HAL_WriteSerial"

serialFlush

public static void serialFlush(int handle)

Flushes the serial write buffer out to the port.

Parameters:

handle - the serial port handle

See Also:

"HAL_FlushSerial"

serialClear

public static void serialClear(int handle)

Clears the receive buffer of the serial port.

Parameters:

handle - the serial port handle

See Also:

"HAL_ClearSerial"

serialClose

public static void serialClose(int handle)

Closes a serial port.

Parameters:

handle - the serial port handle to close

See Also:

"HAL_CloseSerial"