Package jmri.jmrix.sprog

Class SprogConstants

java.lang.Object

jmri.jmrix.sprog.SprogConstants

public final class SprogConstants
extends Object

Constants to represent values seen in SPROG traffic.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	SprogConstants.SprogMode
static enum	SprogConstants.SprogState

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BLUE_BIT
static final int	CALC_BIT
static int	CS_MAX_TIMEOUT_COUNT	Number of consecutive reply timeouts before the command station shuts down track power.
static int	CS_REPLY_TIMEOUT	Timeout for command station to wait for reply from hardware.
static final int	DEFAULT_I
static final int	DEFAULT_MAX_SLOTS
static final int	F0
static final int	F1
static final int	F2
static final int	F3
static final int	F4
static final int	F5
static final int	F6
static final int	F7
static final int	F8
static final int	LONG_ADD
static final int	MAX_ACC_DECODER_JMRI_ADDR
static int	MAX_FUNCTIONS
static final int	MAX_PACKET_LENGTH
static final int	MIN_SLOTS
static final int	OPS_REPEATS
static int	PACKET_DELAY_WARN_THRESHOLD	Threshold to warn of long delays between DCC packets to the rails.
static final int	POWER_BIT
static final int	S_REPEATS
static final int	SLOT_FREE
static final int	SLOT_IN_USE
static final int	SLOTS_LIMIT
static final int	SPROG
static final int	SPROG_CS
static final int	STEP_MASK
static final int	STEP128_BIT
static final int	STEP14_BIT
static final int	STEP28_BIT
static int	TC_BOOT_REPLY_TIMEOUT
static int	TC_OPS_REPLY_TIMEOUT
static int	TC_PROG_REPLY_TIMEOUT	Timeout for traffic controller to wait for reply from hardware.
static final int	UNLOCK_BIT
static final int	ZTC_BIT

Method Summary

Methods inherited from class java.lang.Object

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

Field Details

SPROG

public static final int SPROG

See Also:

• Constant Field Values

SPROG_CS

public static final int SPROG_CS

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• Constant Field Values

PACKET_DELAY_WARN_THRESHOLD

public static int PACKET_DELAY_WARN_THRESHOLD

Threshold to warn of long delays between DCC packets to the rails. Worst case DCC packet transmission time is ~10 ms, which equates to 100 packets/s. Wait for a somewhat arbitrary time before reporting a possible issue with the system performance. A delay of 50 ms equates to 20 packets/s if sustained. Slower systems such as Raspberry Pi with flash based file systems are more likely to exhibit longer delays between packets.

CS_REPLY_TIMEOUT

public static int CS_REPLY_TIMEOUT

Timeout for command station to wait for reply from hardware. Slower systems such as Raspberry Pi with flash based file systems are more likely to exhibit longer delays.

CS_MAX_TIMEOUT_COUNT

public static int CS_MAX_TIMEOUT_COUNT

Number of consecutive reply timeouts before the command station shuts down track power.

A single timeout can occur when the JVM is temporarily busy (e.g. garbage collection or Swing rendering). Requiring multiple consecutive timeouts before taking the drastic step of removing power avoids false-positive shutdowns on slower systems.

TC_PROG_REPLY_TIMEOUT

public static int TC_PROG_REPLY_TIMEOUT

Timeout for traffic controller to wait for reply from hardware. Most replies are received from SPROG hardware with a few seconds, but paged mode programming operations can take considerably longer when reading a high value from a CV. Therefore we set a very long timeout, which should longer than the programmer timeout.

TC_OPS_REPLY_TIMEOUT

public static int TC_OPS_REPLY_TIMEOUT

TC_BOOT_REPLY_TIMEOUT

public static int TC_BOOT_REPLY_TIMEOUT

S_REPEATS

public static final int S_REPEATS

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• Constant Field Values

OPS_REPEATS

public static final int OPS_REPEATS

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MAX_PACKET_LENGTH

public static final int MAX_PACKET_LENGTH

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SLOT_FREE

public static final int SLOT_FREE

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SLOT_IN_USE

public static final int SLOT_IN_USE

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DEFAULT_MAX_SLOTS

public static final int DEFAULT_MAX_SLOTS

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• Constant Field Values

MIN_SLOTS

public static final int MIN_SLOTS

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• Constant Field Values

SLOTS_LIMIT

public static final int SLOTS_LIMIT

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MAX_FUNCTIONS

public static int MAX_FUNCTIONS

F8

public static final int F8

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F7

public static final int F7

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F6

public static final int F6

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F5

public static final int F5

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F4

public static final int F4

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F3

public static final int F3

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F2

public static final int F2

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F1

public static final int F1

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F0

public static final int F0

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• Constant Field Values

UNLOCK_BIT

public static final int UNLOCK_BIT

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• Constant Field Values

CALC_BIT

public static final int CALC_BIT

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• Constant Field Values

POWER_BIT

public static final int POWER_BIT

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• Constant Field Values

ZTC_BIT

public static final int ZTC_BIT

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BLUE_BIT

public static final int BLUE_BIT

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STEP_MASK

public static final int STEP_MASK

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STEP14_BIT

public static final int STEP14_BIT

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STEP28_BIT

public static final int STEP28_BIT

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STEP128_BIT

public static final int STEP128_BIT

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LONG_ADD

public static final int LONG_ADD

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DEFAULT_I

public static final int DEFAULT_I

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MAX_ACC_DECODER_JMRI_ADDR

public static final int MAX_ACC_DECODER_JMRI_ADDR

See Also:

• Constant Field Values