com.iotize.jvm.tapbus.drivers

Class Ad7124Driver

java.lang.Object

com.iotize.jvm.tapbus.drivers.Ad7124Driver

Direct Known Subclasses:

SpiDriver

public abstract class Ad7124Driver
extends java.lang.Object

Ad7124Driver Device driver (SPI management)

Field Summary

Fields

Modifier and Type	Field and Description
protected int	frequency
protected int	timeOut

Constructor Summary

Constructors

Constructor and Description
Ad7124Driver()

Method Summary

Modifier and Type	Method and Description
abstract boolean	init(int clockFreq) Initializes the SPI communication peripheral.
abstract int	read(byte[] data, int len) Reads data from SPI.
abstract boolean	SpiInit(boolean lsbFirst, int clockFreq, int dataMode)
abstract int	write(byte[] data, int len) Writes data to SPI.

Methods inherited from class java.lang.Object

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

Field Detail

frequency

protected int frequency

timeOut

protected int timeOut

Constructor Detail

Ad7124Driver

public Ad7124Driver()

Method Detail

SpiInit

public abstract boolean SpiInit(boolean lsbFirst,
                                int clockFreq,
                                int dataMode)

init

public abstract boolean init(int clockFreq)

Initializes the SPI communication peripheral.

Parameters:

clockFreq - - SPI clock frequency (Hz). Example: 1000 - SPI clock frequency is 1 kHz.

Returns:

status - Result of the initialization procedure. Example: true - if initialization was successful; false - if initialization was unsuccessful.

write

public abstract int write(byte[] data,
                          int len)

Writes data to SPI.

Parameters:

data - - Data represents the write buffer.

len - - Number of bytes to write.

Returns:

Number of written bytes, negative for error.

read

public abstract int read(byte[] data,
                         int len)

Reads data from SPI.

Parameters:

data - - Data represents the write buffer as an input parameter and the read buffer as an output parameter.

len - - Number of bytes to read.

Returns:

Number of read bytes, negative for error.