MCP Class Reference

#include <pu2clr_mcp23008.h>

Public Member Functions
uint8_t	lookForDevice ()
	Look for MCP23008 device I2C Address. More...
void	reset ()
	Resets the MCP23008. More...
void	setup (uint8_t i2c=0x20, uint8_t io=GPIO_OUTPUT, int reset_pint=-1, long i2c_freq=100000)
	Starts the MCP23008. More...
uint8_t	getRegister (uint8_t reg)
	Gets the corrent register information. More...
void	setRegister (uint8_t reg, uint8_t value)
	Sets a value to a given register. More...
void	turnGpioOn (uint8_t gpio)
	Turns a given GPIO port on (high level) More...
void	turnGpioOff (uint8_t gpio)
	Turns a given GPIO port off (low level) More...
void	pullUpGpioOn (uint8_t gpio)
	Turns intenal pull up resistor ON to a given GPIO PIN (high level) More...
void	pullUpGpioOff (uint8_t gpio)
	Turns intenal pull up resistor OFF to a given GPIO PIN (low level) More...
void	setIoCon (uint8_t INTPOL, uint8_t ODR, uint8_t HAEN, uint8_t DISSLW, uint8_t SEQOP)
	Sets the IO Configurarion gerister. More...
mcp23008_ioncon	getIoCon ()
	Returns the IOCON content. More...
void	invertGpioPolarity ()
	Inverts the polarity of the all GPIO port bits. More...
void	setInterrupt (uint8_t polatity=0, uint8_t openDrainOutput=0)
	Configures the MCP23008 interrupt feature. More...
void	interruptGpioOn (uint8_t gpio, uint8_t bitCompare=1)
	Sets the interrupt-on-change feature to a given GPIO pin. More...
bool	gpioRead (uint8_t gpio)
	Reads the status (high or low) of a given GPIO. More...
void	gpioWrite (uint8_t gpio, uint8_t value)
	Sets a given value (high(1) or low(0) ) to a given gpio pin. More...
bool	registerDigitalRead (uint8_t mcp_register, uint8_t bit_position)
	Reads the status (high or low) of a given bit (position) of a given MCP23008 register. More...
void	registerDigitalWrite (uint8_t mcp_register, uint8_t bit_position, uint8_t value)
	Sets High or Low to a given position in a given MCP23008 register. More...
uint8_t	getGPIOS ()
	Returns the current MCP GPIO pin levels. More...
void	setGPIOS (uint8_t value)
	Sets a value to the GPIO Register. More...
uint8_t	getINTCAP ()
	Returns the last value of INTCAP register (value immediately after the last interrupt event) More...
uint8_t	getINTF ()
	Returns the last value of INTF register. More...
bool	isBitValueHigh (uint8_t byteValue, uint8_t bitNumber)
	Checks if the Bit Value of a given bit position is high. More...
void	setClock (long freq)
	Sets I2C bus to a given frequency. More...

Protected Attributes
uint8_t	i2cAddress = 0x20
	Default i2c address. More...
uint8_t	gpios = 0
	REG_GPIO shadow register. More...
uint8_t	intcap = 0
uint8_t	intf = 0
int	reset_pin = -1
	Digital Arduino pin to control the MCP2300 RESET. More...

Field Documentation

i2cAddress

uint8_t MCP::i2cAddress = 0x20

protected

Default i2c address.

gpios

uint8_t MCP::gpios = 0

protected

REG_GPIO shadow register.

intcap

uint8_t MCP::intcap = 0

protected

intf

uint8_t MCP::intf = 0

protected

reset_pin

int MCP::reset_pin = -1

protected

Digital Arduino pin to control the MCP2300 RESET.

Referenced by reset(), and setup().

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

• /Users/rcaratti/Desenvolvimento/eu/Arduino/PU2CLR_MCP23008/pu2clr_mcp23008.h
• /Users/rcaratti/Desenvolvimento/eu/Arduino/PU2CLR_MCP23008/pu2clr_mcp23008.cpp