josx.rcxcomm
Class LLC

java.lang.Object
  josx.rcxcomm.LLC

public class LLC

extends Object

Low-level comms (LLC). This class provide native methods to read and write bytes to and from the IR unit by low-level driving of the RCX H8300 UART. It keeps its footprint down by making as much use of ROM routines as possible. The init() method must be called to take over driving the IR unit from the ROM routines. Once this is done, the program cannot use the Serial class.

Method Summary

static void	init() Initialize LLC
static boolean	isSendError() Return the error status of the last send
static boolean	isSending() Indicate whether the last send is still active
static int	read() read a single byte, if available
static int	receive() wait a little while for a byte to become available
static boolean	sendBytes(byte[] buf, int len) Send a number of bytes and wait for completion of transmission
static void	setRangeLong() Sets long range transmision.
static void	setRangeShort() Sets short range transmision.

Methods inherited from class java.lang.Object

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

Method Detail

init

public static void init()

Initialize LLC

read

public static int read()

read a single byte, if available

Returns:

the byte read, or -1 if no byte is available

isSending

public static boolean isSending()

Indicate whether the last send is still active

Returns:

true if still sending, else false

isSendError

public static boolean isSendError()

Return the error status of the last send

Returns:

true if still sending, else false

sendBytes

public static boolean sendBytes(byte[] buf,
                                int len)

Send a number of bytes and wait for completion of transmission

Parameters:

buf - the array of bytes to send

len - the number of bytes to send

Returns:

true if the send is successful, else false

receive

public static int receive()

wait a little while for a byte to become available

Returns:

the byte received, or -1 if no byte available

setRangeLong

public static void setRangeLong()

Sets long range transmision.

setRangeShort

public static void setRangeShort()

Sets short range transmision.