daisy::Mcp23X17< Transport > Class Template Reference

#include <mcp23x17.h>

Classes
struct	Config

Public Member Functions
void	Init ()
void	Init (const Config &config)
void	PortMode (MCPPort port, uint8_t directions, uint8_t pullups=0xFF, uint8_t inverted=0x00)
void	PinMode (uint8_t pin, MCPMode mode, bool inverted)
void	WritePin (uint8_t pin, uint8_t state)
uint8_t	ReadPin (uint8_t pin)
void	WritePort (MCPPort port, uint8_t value)
uint8_t	ReadPort (MCPPort port)
void	Write (uint16_t value)
uint16_t	Read ()
uint8_t	GetPin (uint8_t id)
	Fetches pin state from the result of recent Read() call. Useful to preserve unneeded reads.

Member Function Documentation

GetPin()

template<typename Transport >

uint8_t daisy::Mcp23X17< Transport >::GetPin ( uint8_t  id )

inline

Fetches pin state from the result of recent Read() call. Useful to preserve unneeded reads.

Parameters

id

pin ID

Returns

uint8_t pin state: 0x00 or 0xFF

Init() [1/2]

template<typename Transport >

void daisy::Mcp23X17< Transport >::Init ( )

inline

Init() [2/2]

template<typename Transport >

void daisy::Mcp23X17< Transport >::Init ( const Config &  config )

inline

PinMode()

template<typename Transport >

void daisy::Mcp23X17< Transport >::PinMode ( uint8_t  pin, MCPMode  mode, bool  inverted  )

inline

Controls a single pin direction. Pin 0-7 for port A, 8-15 fo port B.

1 = Pin is configured as an input. 0 = Pin is configured as an output.

See "3.5.1 I/O Direction register".

PortMode()

template<typename Transport >

void daisy::Mcp23X17< Transport >::PortMode ( MCPPort  port, uint8_t  directions, uint8_t  pullups = 0xFF, uint8_t  inverted = 0x00  )

inline

Controls the pins direction on a whole port at once.

directions: 0 - output, 1 - input pullups: 0 - disabled, 1 - enabled inverted: 0 - false/normal, 1 - true/inverted

See "3.5.1 I/O Direction register".

Read()

template<typename Transport >

uint16_t daisy::Mcp23X17< Transport >::Read ( )

inline

Reads pins state for both ports.

1 = Logic-high 0 = Logic-low

See "3.5.10 Port register".

ReadPin()

template<typename Transport >

uint8_t daisy::Mcp23X17< Transport >::ReadPin ( uint8_t  pin )

inline

Reads a single pin state. Pin 0-7 for port A, 8-15 for port B.

1 = Logic-high 0 = Logic-low

See "3.5.10 Port register".

ReadPort()

template<typename Transport >

uint8_t daisy::Mcp23X17< Transport >::ReadPort ( MCPPort  port )

inline

Reads pins state for a whole port.

1 = Logic-high 0 = Logic-low

See "3.5.10 Port register".

Write()

template<typename Transport >

void daisy::Mcp23X17< Transport >::Write ( uint16_t  value )

inline

Writes pins state to both ports.

1 = Logic-high 0 = Logic-low

See "3.5.10 Port register".

WritePin()

template<typename Transport >

void daisy::Mcp23X17< Transport >::WritePin ( uint8_t  pin, uint8_t  state  )

inline

Writes a single pin state. Pin 0-7 for port A, 8-15 for port B.

1 = Logic-high 0 = Logic-low

See "3.5.10 Port register".

WritePort()

template<typename Transport >

void daisy::Mcp23X17< Transport >::WritePort ( MCPPort  port, uint8_t  value  )

inline

Writes pins state to a whole port.

1 = Logic-high 0 = Logic-low

See "3.5.10 Port register".

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

• src/dev/mcp23x17.h