Package com.diozero.devices.mcp23xxx

Class MCP23x17

java.lang.Object

com.diozero.internal.spi.AbstractDeviceFactory

com.diozero.devices.mcp23xxx.MCP23xxx

com.diozero.devices.mcp23xxx.MCP23x17

All Implemented Interfaces:

DeviceInterface, DeviceEventConsumer<DigitalInputEvent>, GpioExpander, DeviceFactoryInterface, GpioDeviceFactoryInterface, PwmOutputDeviceFactoryInterface, AutoCloseable, Consumer<DigitalInputEvent>

Direct Known Subclasses:

MCP23017, MCP23S17

public abstract class MCP23x17
extends MCP23xxx

https://www.instructables.com/Arduino-NANO-Tests-2-MCP23S17-IO-Xpanders

 I2C |   SPI | Notch | SPI/I2C
     |  GPB0 |  1 28 | GPA7
     |  GPB1 |  2 27 | GPA6
     |  GPB2 |  3 26 | GPA5
     |  GPB3 |  4 25 | GPA4
     |  GPB4 |  5 24 | GPA3
     |  GPB5 |  6 23 | GPA2
     |  GPB6 |  7 22 | GPA1
     |  GPB7 |  8 21 | GPA0
     |  3v3  |  9 20 | INT A
     |  GND  | 10 19 | INT B
  NC |   CS  | 11 18 | 3v3 (via 1KOhm resister)
 SCK |  SCK  | 12 17 | GND
 SDA | MOSI  | 13 16 | GND
  NC | MISO  | 14 15 | GND
 

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MCP23x17.MCP23x17BoardPinInfo

Field Summary

Fields inherited from class com.diozero.devices.mcp23xxx.MCP23xxx

INTERRUPT_GPIO_NOT_SET

Fields inherited from class com.diozero.internal.spi.AbstractDeviceFactory

closed, deviceStates

Constructor Summary

Constructors

Constructor	Description
MCP23x17(String deviceName)
MCP23x17(String deviceName, int interruptGpio)
MCP23x17(String deviceName, int interruptGpioA, int interruptGpioB)

Method Summary

Modifier and Type	Method	Description
BoardPinInfo	getBoardPinInfo()	Get information about pins that can be provisioned by this device factory.
protected int	getDefValReg(int port)
protected int	getGPIntEnReg(int port)
protected int	getGPIOReg(int port)
protected int	getGPPullUpReg(int port)
protected int	getIntCapReg(int port)
protected int	getIntConReg(int port)
protected int	getIntFReg(int port)
protected int	getIOConReg(int port)
protected int	getIODirReg(int port)
protected int	getIPolReg(int port)
protected int	getOLatReg(int port)

Methods inherited from class com.diozero.devices.mcp23xxx.MCP23xxx

accept, close, closeGpio, createDigitalInputDevice, createDigitalInputOutputDevice, createDigitalOutputDevice, createPwmOutputDevice, getBoardPwmFrequency, getName, getValue, getValues, initialise, readByte, setBoardPwmFrequency, setDirections, setInputMode, setOutputMode, setValue, setValues, writeByte

Methods inherited from class com.diozero.internal.spi.AbstractDeviceFactory

createI2CKey, createPinKey, createSerialKey, createSpiKey, deviceClosed, deviceOpened, getDevice, isClosed, isDeviceOpened, reopen

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Consumer

andThen

Methods inherited from interface com.diozero.internal.spi.DeviceFactoryInterface

createI2CKey, createPinKey, createSerialKey, createSpiKey, deviceClosed, deviceOpened, getDevice, isClosed, isDeviceOpened, reopen, start

Methods inherited from interface com.diozero.internal.spi.GpioDeviceFactoryInterface

provisionDigitalInputDevice, provisionDigitalInputOutputDevice, provisionDigitalOutputDevice

Methods inherited from interface com.diozero.internal.spi.PwmOutputDeviceFactoryInterface

provisionPwmOutputDevice

Constructor Detail

MCP23x17

public MCP23x17(String deviceName)

MCP23x17

public MCP23x17(String deviceName,
                int interruptGpio)

MCP23x17

public MCP23x17(String deviceName,
                int interruptGpioA,
                int interruptGpioB)

Method Detail

getIODirReg

protected int getIODirReg(int port)

Specified by:

getIODirReg in class MCP23xxx

getIPolReg

protected int getIPolReg(int port)

Specified by:

getIPolReg in class MCP23xxx

getGPIntEnReg

protected int getGPIntEnReg(int port)

Specified by:

getGPIntEnReg in class MCP23xxx

getDefValReg

protected int getDefValReg(int port)

Specified by:

getDefValReg in class MCP23xxx

getIntConReg

protected int getIntConReg(int port)

Specified by:

getIntConReg in class MCP23xxx

getIOConReg

protected int getIOConReg(int port)

Specified by:

getIOConReg in class MCP23xxx

getGPPullUpReg

protected int getGPPullUpReg(int port)

Specified by:

getGPPullUpReg in class MCP23xxx

getIntFReg

protected int getIntFReg(int port)

Specified by:

getIntFReg in class MCP23xxx

getIntCapReg

protected int getIntCapReg(int port)

Specified by:

getIntCapReg in class MCP23xxx

getGPIOReg

protected int getGPIOReg(int port)

Specified by:

getGPIOReg in class MCP23xxx

getOLatReg

protected int getOLatReg(int port)

Specified by:

getOLatReg in class MCP23xxx

getBoardPinInfo

public BoardPinInfo getBoardPinInfo()

Description copied from interface: DeviceFactoryInterface

Get information about pins that can be provisioned by this device factory.

Returns:

board pin info instance for this device factory