Class SpiDevice

java.lang.Object

com.codename1.hardware.SpiDevice

public final class SpiDevice
extends Object

A device on an SPI bus, opened through Hardware.openSpi(int, int, int, int, int).

Method Summary

Modifier and Type	Method	Description
void	close()	Releases the device.
int	getBus()	The SPI controller number.
int	getChipSelect()	The chip-select line.
byte[]	transfer(byte[] tx)	Clocks tx out and returns the bytes clocked in at the same time.
void	transfer(byte[] tx, byte[] rx)	Clocks tx out while filling rx; both must be the same length, and may be the same array.

Methods inherited from class Object

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

Method Details

getBus

public int getBus()

The SPI controller number.

getChipSelect

public int getChipSelect()

The chip-select line.

transfer

public byte[] transfer(byte[] tx)
                throws HardwareException

Clocks tx out and returns the bytes clocked in at the same time.

Throws

• HardwareException: when the transfer fails or the device is closed

Throws:

HardwareException

transfer

public void transfer(byte[] tx,
 byte[] rx)
              throws HardwareException

Clocks tx out while filling rx; both must be the same length, and may be the same array.

Throws

• HardwareException: when the transfer fails or the device is closed

Throws:

HardwareException

close

public void close()

Releases the device. Closing twice is harmless.