Module com.pi4j.plugin.linuxfs

Package com.pi4j.plugin.linuxfs.provider.i2c

Class LinuxFsI2CBus

java.lang.Object

com.pi4j.io.i2c.I2CBusBase

com.pi4j.plugin.linuxfs.provider.i2c.LinuxFsI2CBus

All Implemented Interfaces:

I2CBus

public class LinuxFsI2CBus
extends I2CBusBase

Field Summary

Fields

Modifier and Type	Field	Description
protected LinuxFile	file	File handle for this i2c bus
protected org.slf4j.Logger	logger

Fields inherited from class com.pi4j.io.i2c.I2CBusBase

bus, DEFAULT_LOCK_ACQUIRE_TIMEOUT, DEFAULT_LOCK_ACQUIRE_TIMEOUT_UNITS, lockAquireTimeout, lockAquireTimeoutUnit

Constructor Summary

Constructors

Constructor	Description
LinuxFsI2CBus(I2CConfig config)

Method Summary

Modifier and Type	Method	Description
void	close()
<R> R	execute(I2C i2c, CheckedFunction<LinuxFile,R> action)
<R> R	execute(I2C i2c, Callable<R> action)
void	executeIOCTL(I2C i2c, long command, ByteBuffer data, IntBuffer offsets)
protected void	selectBusSlave(I2C i2c)	Selects the slave device if not already selected on this bus.

Methods inherited from class com.pi4j.io.i2c.I2CBusBase

_execute

Methods inherited from class java.lang.Object

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

Field Details

logger

protected org.slf4j.Logger logger

file

protected LinuxFile file

File handle for this i2c bus

Constructor Details

LinuxFsI2CBus

public LinuxFsI2CBus(I2CConfig config)

Method Details

execute

public <R> R execute(I2C i2c,
 Callable<R> action)

execute

public <R> R execute(I2C i2c,
 CheckedFunction<LinuxFile,R> action)

executeIOCTL

public void executeIOCTL(I2C i2c,
 long command,
 ByteBuffer data,
 IntBuffer offsets)

Parameters:

i2c - the device to select before performing the ioctl command

command - From I2CConstants

data - values in bytes for all structures, with 4 or 8 byte alignment enforced by filling holes before pointers

offsets - ByteBuffer: offsets of pointer/ byte offset of pointedToData

selectBusSlave

protected void selectBusSlave(I2C i2c)
                       throws IOException

Selects the slave device if not already selected on this bus. Runs the required ioctl's via JNI.

Parameters:

i2c - Device to select

Throws:

IOException

close

public void close()