edu.wpi.first.wpilibj.communication
Class FRCControl

java.lang.Object
  edu.wpi.first.wpilibj.communication.FRCControl

public final class FRCControl
extends java.lang.Object

Contains the code necessary to communicate between the robot and the driver station.

Nested Class Summary

static class	FRCControl.CachedNativeBuffer A simple 1-element cache that keeps a pointer to native memory around.
static class	FRCControl.DynamicControlData

Field Summary

static int	IO_CONFIG_DATA_SIZE The size of the IO configuration data
static int	USER_CONTROL_DATA_SIZE The size of the user control data
static int	USER_DS_LCD_DATA_SIZE The size of the user driver station display data
static int	USER_STATUS_DATA_SIZE The size of the user status data

Method Summary

static int	getCommonControlData(FRCCommonControlData data, int wait_ms) Get the control data from the driver station.
static int	getDynamicControlData(byte type, FRCControl.DynamicControlData dynamicData, int maxLength, int wait_ms) Get the dynamic control data from the driver station.
static void	observeUserProgramAutonomous()
static void	observeUserProgramDisabled()
static void	observeUserProgramStarting() Let the DS know that the user is loading a new app.
static void	observeUserProgramTeleop()
static void	observeUserProgramTest()
static int	overrideIOConfig(FRCControl.DynamicControlData ioConfig, int wait_ms) Right new io config data.
static void	setErrorData(byte[] bytes, int length, int timeOut) Send data to the driver station's error panel
static void	setErrorData(Pointer textPtr, int length, int timeOut) Send data to the driver station's error panel
static void	setNewDataSem(Semaphore sem) Set the semaphore for the communications task to use
static int	setStatusData(double battery, int dsDigitalOut, int updateNumber, byte[] userDataHigh, int userDataHighLength, byte[] userDataLow, int userDataLowLength, int wait_ms) Set the status data to send to the ds
static void	setUserDsLcdData(byte[] bytes, int length, int timeOut) Send data to the driver station's user panel

Methods inherited from class java.lang.Object

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

Field Detail

IO_CONFIG_DATA_SIZE

public static final int IO_CONFIG_DATA_SIZE

The size of the IO configuration data

See Also:

Constant Field Values

USER_CONTROL_DATA_SIZE

public static final int USER_CONTROL_DATA_SIZE

The size of the user control data

See Also:

Constant Field Values

USER_STATUS_DATA_SIZE

public static final int USER_STATUS_DATA_SIZE

The size of the user status data

See Also:

Constant Field Values

USER_DS_LCD_DATA_SIZE

public static final int USER_DS_LCD_DATA_SIZE

The size of the user driver station display data

See Also:

Constant Field Values

Method Detail

getCommonControlData

public static int getCommonControlData(FRCCommonControlData data,
                                       int wait_ms)

Get the control data from the driver station. The parameter "data" is only updated when the method returns 0.

Parameters:

data - the object to store the results in (out param)

wait_ms - the maximum time to wait

Returns:

0 if new data, 1 if no new data, 2 if access timed out.

getDynamicControlData

public static int getDynamicControlData(byte type,
                                        FRCControl.DynamicControlData dynamicData,
                                        int maxLength,
                                        int wait_ms)

Get the dynamic control data from the driver station. The parameter "dynamicData" is only updated when the method returns 0.

Parameters:

type - The type to get.

dynamicData - The array to hold the result in.

maxLength - The maximum length of the data.

wait_ms - The maximum time to wait.

Returns:

0 if new data, 1 if no new data, 2 if access timed out.

overrideIOConfig

public static int overrideIOConfig(FRCControl.DynamicControlData ioConfig,
                                   int wait_ms)

Right new io config data.

Parameters:

ioConfig - The data to write / read

wait_ms - The maximum time to wait.

Returns:

0 if new data, 1 if no new data, 2 if access timed out.

setStatusData

public static int setStatusData(double battery,
                                int dsDigitalOut,
                                int updateNumber,
                                byte[] userDataHigh,
                                int userDataHighLength,
                                byte[] userDataLow,
                                int userDataLowLength,
                                int wait_ms)

Set the status data to send to the ds

Parameters:

battery - the battery voltage

dsDigitalOut - value to set the digital outputs on the ds to

updateNumber - unique ID for this update (incrementing)

userDataHigh - additional high-priority user data bytes

userDataHighLength - number of high-priority data bytes

userDataLow - additional low-priority user data bytes

userDataLowLength - number of low-priority data bytes

wait_ms - the timeout

Returns:

0 on success, 1 if userData.length is too big, 2 if semaphore could not be taken in wait_ms.

setErrorData

public static void setErrorData(byte[] bytes,
                                int length,
                                int timeOut)

Send data to the driver station's error panel

Parameters:

bytes - the byte array containing the properly formatted information for the display

length - the length of the byte array

timeOut - the maximum time to wait

setErrorData

public static void setErrorData(Pointer textPtr,
                                int length,
                                int timeOut)

Send data to the driver station's error panel

Parameters:

textPtr - pointer to C byte array containing the properly formatted information for the display

length - the length of the byte array

timeOut - the maximum time to wait

setUserDsLcdData

public static void setUserDsLcdData(byte[] bytes,
                                    int length,
                                    int timeOut)

Send data to the driver station's user panel

Parameters:

bytes - the byte array containing the properly formatted information for the display

length - the length of the byte array

timeOut - the maximum time to wait

setNewDataSem

public static void setNewDataSem(Semaphore sem)

Set the semaphore for the communications task to use

Parameters:

sem - the semaphore to use

observeUserProgramStarting

public static void observeUserProgramStarting()

Let the DS know that the user is loading a new app.

observeUserProgramDisabled

public static void observeUserProgramDisabled()

observeUserProgramAutonomous

public static void observeUserProgramAutonomous()

observeUserProgramTeleop

public static void observeUserProgramTeleop()

observeUserProgramTest

public static void observeUserProgramTest()