com.dctl.hardware.spi
Class SPI

java.lang.Object
  |
  +--com.dctl.hardware.spi.SPI

public class SPI

extends Object

SPI class that provides access to an SPI slave device

Constructor Summary

SPI(int instance, int slave)
Create a new SPI attached to a a particular instance using the specified slave channel

Method Summary

int	getFrameSize() Get the number of bits in the frame size
int	getTransferRate() Get the transfer rate in hz
boolean	isClockInFirstEdge() Get the value for clocking in on the first edge
boolean	isFirstEdgeFalling() Get the value of the first edge falling
void	setClockInFirstEdge(boolean state) Set true to clock in on the first edge
void	setFirstEdgeFalling(boolean state) Make the first edge a falling edge
void	setFrameSize(int bits) Set the value of the frame size
void	setTransferRate(int rate) Set the transmit rate in hz
void	transfer(byte[] outBuffer, int outOffset, int outFrames, byte[] inBuffer, int inOffset, int inFrames) Transfer data

Methods inherited from class java.lang.Object

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

Constructor Detail

SPI

public SPI(int instance,
           int slave)
    throws SystemException

Create a new SPI attached to a a particular instance using the specified slave channel

Parameters:

instance - The instance

slave - The slave channel

Throws:

SystemException - if there is an error

Method Detail

setFirstEdgeFalling

public void setFirstEdgeFalling(boolean state)
                         throws SystemException

Make the first edge a falling edge

Parameters:

state - True to set it, false to clear it

Throws:

SystemException - if there is an error

isFirstEdgeFalling

public boolean isFirstEdgeFalling()

Get the value of the first edge falling

Returns:

true if it is, false otherwise

setClockInFirstEdge

public void setClockInFirstEdge(boolean state)
                         throws SystemException

Set true to clock in on the first edge

Parameters:

state - true to clock in on the first edge, false otherwise

Throws:

SystemException - if there is an error

isClockInFirstEdge

public boolean isClockInFirstEdge()

Get the value for clocking in on the first edge

Returns:

true if it is, false otherwise

setFrameSize

public void setFrameSize(int bits)
                  throws SystemException

Set the value of the frame size

Parameters:

bits - The number of bits

Throws:

SystemException - if there is an error

getFrameSize

public int getFrameSize()

Get the number of bits in the frame size

Returns:

the number of bits

setTransferRate

public void setTransferRate(int rate)
                     throws SystemException

Set the transmit rate in hz

Parameters:

rate - The transfer rate

Throws:

SystemException - if there is an error

getTransferRate

public int getTransferRate()

Get the transfer rate in hz

Returns:

the rate

transfer

public void transfer(byte[] outBuffer,
                     int outOffset,
                     int outFrames,
                     byte[] inBuffer,
                     int inOffset,
                     int inFrames)
              throws SystemException

Transfer data

Parameters:

outBuffer - The output buffer

outOffset - The offset into the output buffer

outFrames - The number of frames to output

inBuffer - The input buffer

inOffset - The offset into the input buffer

inFrames - The number of frames to input

Throws:

SystemException - if there is an error