io-expander-pca9535a.h File Reference

Driver for I2C-based IO expander type NXP PCA9535A. More...

#include <stdbool.h>
#include <string.h>
#include <em_device.h>

Include dependency graph for io-expander-pca9535a.h:

Go to the source code of this file.

Data Structures
struct	io_expander_t

Functions
Functions called from application programs
bool	IoExpPortInit (const struct io_expander_t *IoExpander)
	Name: IoExpPortInit Initializes I2C-based IO expander type NXP PCA9535A. I2C address range is 0x20 - 0x27. Max baudrate is 400 kbit/s. More...
bool	IoExpPortWrite (const struct io_expander_t *IoExpander, const uint8_t Port0, const uint8_t Port1)
	Name: IoExpPortWrite Write to IO expander PORT0 and PORT1. More...
bool	IoExpPort0Write (const struct io_expander_t *IoExpander, const uint8_t Port0)
	Name: IoExpPort0Write Write to IO expander PORT0. More...
bool	IoExpPort1Write (const struct io_expander_t *IoExpander, const uint8_t Port1)
	Name: IoExpPort1Write Write to IO expander PORT1. More...
bool	IoExpPortRead (const struct io_expander_t *IoExpander, uint8_t *Port0, uint8_t *Port1)
	Name: IoExpPortRead Read IO expander PORT0 and PORT1. More...
static bool	IoExpPort0Read (const struct io_expander_t *IoExpander, uint8_t *Port0)
	Name: IoExpPort0Read Read IO expander PORT0. More...
static bool	IoExpPort1Read (const struct io_expander_t *IoExpander, uint8_t *Port1)
	Name: IoExpPort1Read Read IO expander PORT1. More...

Detailed Description

Driver for I2C-based IO expander type NXP PCA9535A.

Author

KLO, Jetro as

Definition in file io-expander-pca9535a.h.

Function Documentation

bool IoExpPortInit

(

const struct io_expander_t *

IoExpander

)

Name: IoExpPortInit
Initializes I2C-based IO expander type NXP PCA9535A. I2C address range is 0x20 - 0x27. Max baudrate is 400 kbit/s.

Parameters

IoExpander

Parameters for the IO port expander to be used

Returns

true if OK, else false

bool IoExpPortWrite	(	const struct io_expander_t *	IoExpander,
		const uint8_t	Port0,
		const uint8_t	Port1
	)

Name: IoExpPortWrite
Write to IO expander PORT0 and PORT1.

Parameters

IoExpander	Parameters for the IO port expander to be used
Port0	Data to be written to PORT0
Port1	Data to be written to PORT1

Returns

true if OK, else false

Referenced by IoExpPortClear(), IoExpPortSet(), and UpdateLeds().

bool IoExpPort0Write	(	const struct io_expander_t *	IoExpander,
		const uint8_t	Port0
	)

Name: IoExpPort0Write
Write to IO expander PORT0.

Parameters

IoExpander	Parameters for the IO port expander to be used
Port0	Data to be written to PORT0

Returns

true if OK, else false

bool IoExpPort1Write	(	const struct io_expander_t *	IoExpander,
		const uint8_t	Port1
	)

Name: IoExpPort1Write
Write to IO expander PORT1.

Parameters

IoExpander	Parameters for the IO port expander to be used
Port1	Data to be written to PORT1

Returns

true if OK, else false

bool IoExpPortRead	(	const struct io_expander_t *	IoExpander,
		uint8_t *	Port0,
		uint8_t *	Port1
	)

Name: IoExpPortRead
Read IO expander PORT0 and PORT1.

Parameters

IoExpander	Parameters for the IO port expander to be used
Port0	Pointer to put data read from IO expander PORT0
Port1	Pointer to put data read from IO expander PORT1

Returns

true if OK, else false

Referenced by IoExpPort0Read(), IoExpPort1Read(), and ReadKeyInput().

static bool IoExpPort0Read ( const struct io_expander_t *  IoExpander, uint8_t *  Port0  )

inlinestatic

Name: IoExpPort0Read
Read IO expander PORT0.

Parameters

IoExpander	Parameters for the IO port expander to be used
Port0	Pointer to put data read from IO expander PORT0

Returns

true if OK, else false

Definition at line 150 of file io-expander-pca9535a.h.

References IoExpPortRead().

static bool IoExpPort1Read ( const struct io_expander_t *  IoExpander, uint8_t *  Port1  )

inlinestatic

Name: IoExpPort1Read
Read IO expander PORT1.

Parameters

IoExpander	Parameters for the IO port expander to be used
Port1	Pointer to put data read from IO expander PORT1

Returns

true if OK, else false

Definition at line 164 of file io-expander-pca9535a.h.

References IoExpPortRead().