robotCore.I2CInterface Class Reference

Public Member Functions
int	read (byte[] buffer, int offset, int length) throws IOException
void	write (byte[] data) throws IOException
int	writeRead (byte[] writeData, byte[] buffer, int offset, int length) throws IOException

Detailed Description

Thin wrapper around a single I2C device on bus 1, using Pi4J V4.

Pi4J V4 methods throw unchecked exceptions; this class converts them to IOException so existing callers keep the same error handling they had with Pi4J V1.

Definition at line 16 of file I2CInterface.java.

Member Function Documentation

read()

int robotCore.I2CInterface.read	(	byte[]	buffer,
		int	offset,
		int	length ) throws IOException

Reads bytes from the device.

Parameters

buffer	buffer to read into
offset	offset in the buffer to start storing data
length	number of bytes to read

Returns

number of bytes read

Definition at line 52 of file I2CInterface.java.

write()

void robotCore.I2CInterface.write

(

byte[]

data

)

throws IOException

Writes bytes to the device.

Parameters

data	bytes to write

Definition at line 70 of file I2CInterface.java.

writeRead()

int robotCore.I2CInterface.writeRead	(	byte[]	writeData,
		byte[]	buffer,
		int	offset,
		int	length ) throws IOException

Writes bytes to the device and then reads a response, as one combined I2C transaction (repeated start, no stop between the write and the read).

Parameters

writeData	bytes to write first (e.g. a register address or command)
buffer	buffer to read the response into
offset	offset in the buffer to start storing data
length	number of bytes to read

Returns

number of bytes read

Definition at line 92 of file I2CInterface.java.

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The documentation for this class was generated from the following file:

• robotCore/I2CInterface.java