| Constructor and Description |
|---|
I2CDeviceImpl(I2CBus bus,
int address)
Constructor.
|
| Modifier and Type | Method and Description |
|---|---|
protected String |
makeDescription()
This helper method creates a string describing bus file name and device address (in hex).
|
protected String |
makeDescription(int address)
This helper method creates a string describing bus file name, device address (in hex)
and local i2c address.
|
int |
read()
This method reads one byte from the i2c device.
|
int |
read(byte[] buffer,
int offset,
int size)
This method reads bytes from the i2c device to given buffer at asked offset.
|
int |
read(byte[] writeBuffer,
int writeOffset,
int writeSize,
byte[] readBuffer,
int readOffset,
int readSize)
This method writes and reads bytes to/from the i2c device in a single method call
|
int |
read(int address)
This method reads one byte from the i2c device.
|
int |
read(int address,
byte[] buffer,
int offset,
int size)
This method reads bytes from the i2c device to given buffer at asked offset.
|
void |
write(byte data)
This method writes one byte to i2c device.
|
void |
write(byte[] buffer)
This method writes all bytes included in the given buffer directly to the i2c device.
|
void |
write(byte[] buffer,
int offset,
int size)
This method writes several bytes to the i2c device from given buffer at given offset.
|
void |
write(int address,
byte data)
This method writes one byte to i2c device.
|
void |
write(int address,
byte[] buffer)
This method writes all bytes included in the given buffer directoy to the register address on the i2c device
|
void |
write(int address,
byte[] buffer,
int offset,
int size)
This method writes several bytes to the i2c device from given buffer at given offset.
|
public I2CDeviceImpl(I2CBus bus, int address)
bus - i2c busaddress - i2c device addresspublic void write(byte data)
throws IOException
write in interface I2CDevicedata - byte to be writtenIOException - thrown in case byte cannot be written to the i2c device or i2c buspublic void write(byte[] buffer,
int offset,
int size)
throws IOException
write in interface I2CDevicebuffer - buffer of data to be written to the i2c device in one gooffset - offset in buffersize - number of bytes to be writtenIOException - thrown in case byte cannot be written to the i2c device or i2c buspublic void write(byte[] buffer)
throws IOException
write in interface I2CDevicebuffer - buffer of data to be written to the i2c device in one goIOException - thrown in case byte cannot be written to the i2c device or i2c buspublic void write(int address,
byte data)
throws IOException
write in interface I2CDeviceaddress - local address in the i2c devicedata - byte to be writtenIOException - thrown in case byte cannot be written to the i2c device or i2c buspublic void write(int address,
byte[] buffer,
int offset,
int size)
throws IOException
write in interface I2CDeviceaddress - local address in the i2c devicebuffer - buffer of data to be written to the i2c device in one gooffset - offset in buffersize - number of bytes to be writtenIOException - thrown in case byte cannot be written to the i2c device or i2c buspublic void write(int address,
byte[] buffer)
throws IOException
write in interface I2CDeviceaddress - local address in the i2c devicebuffer - buffer of data to be written to the i2c device in one goIOException - thrown in case byte cannot be written to the i2c device or i2c buspublic int read()
throws IOException
read in interface I2CDeviceIOException - thrown in case byte cannot be read from the i2c device or i2c buspublic int read(byte[] buffer,
int offset,
int size)
throws IOException
This method reads bytes from the i2c device to given buffer at asked offset.
Note: Current implementation calls read(int). That means for each read byte
i2c bus will send (next) address to i2c device.
read in interface I2CDevicebuffer - buffer of data to be read from the i2c device in one gooffset - offset in buffersize - number of bytes to be readIOException - thrown in case byte cannot be read from the i2c device or i2c buspublic int read(int address)
throws IOException
read in interface I2CDeviceaddress - local address in the i2c deviceIOException - thrown in case byte cannot be read from the i2c device or i2c buspublic int read(int address,
byte[] buffer,
int offset,
int size)
throws IOException
This method reads bytes from the i2c device to given buffer at asked offset.
Note: Current implementation calls read(int). That means for each read byte
i2c bus will send (next) address to i2c device.
read in interface I2CDeviceaddress - local address in the i2c devicebuffer - buffer of data to be read from the i2c device in one gooffset - offset in buffersize - number of bytes to be readIOException - thrown in case byte cannot be read from the i2c device or i2c buspublic int read(byte[] writeBuffer,
int writeOffset,
int writeSize,
byte[] readBuffer,
int readOffset,
int readSize)
throws IOException
read in interface I2CDevicewriteBuffer - buffer of data to be written to the i2c device in one gowriteOffset - offset in write bufferwriteSize - number of bytes to be written from bufferreadBuffer - buffer of data to be read from the i2c device in one goreadOffset - offset in read bufferreadSize - number of bytes to be readIOException - thrown in case byte cannot be read from the i2c device or i2c busprotected String makeDescription()
protected String makeDescription(int address)
address - local address in i2c deviceCopyright © 2012–2015 Pi4J. All rights reserved.