pca9555.c File Reference

#include <compiler.h>
#include <stdlib.h>
#include <string.h>
#include <memdebug.h>
#include <sys/heap.h>
#include <sys/event.h>
#include <cfg/os.h>
#include <dev/twif.h>
#include <dev/gpio.h>
#include <cfg/pca9555.h>
#include <dev/pca9555.h>

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Data Structures
struct	pca_regs_t
Defines
#define	I2C_SLA_IOEXP   0x23
#define	PCA_PINP   0
#define	PCA_POUT   2
#define	PCA_PINV   4
#define	PCA_CONF   6
Functions
int	IOExpInit (void)
int	IOExpPinConfigSet (int bank, int bit, uint32_t flags)
int	IOExpRawWrite (int bank, int value)
int	IOExpRawRead (int bank, int *value)
int	IOExpGetBit (int bank, int bit, int *value)
int	IOExpSetBitHigh (int bank, int bit)
int	IOExpSetBitLow (int bank, int bit)
int	IOExpSetBit (int bank, int bit, int value)
Variables
pca_regs_t *	pca_ctrl = NULL

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Define Documentation

#define I2C_SLA_IOEXP   0x23

Definition at line 57 of file pca9555.c.

Referenced by IOExpGetBit(), IOExpInit(), IOExpPinConfigSet(), IOExpRawRead(), IOExpRawWrite(), IOExpSetBitHigh(), and IOExpSetBitLow().

#define PCA_PINP   0

PCA Input register offset

Definition at line 60 of file pca9555.c.

Referenced by IOExpGetBit(), and IOExpRawRead().

#define PCA_POUT   2

PCA Output register offset

Definition at line 61 of file pca9555.c.

Referenced by IOExpInit(), IOExpPinConfigSet(), IOExpRawWrite(), IOExpSetBitHigh(), and IOExpSetBitLow().

#define PCA_PINV   4

PCA Polarity inversion register offset

Definition at line 62 of file pca9555.c.

Referenced by IOExpInit(), and IOExpPinConfigSet().

#define PCA_CONF   6

PCA Configuration register offset

Definition at line 63 of file pca9555.c.

Referenced by IOExpInit(), and IOExpPinConfigSet().

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Function Documentation

int IOExpInit

(

void

)

Definition at line 75 of file pca9555.c.

References pca_regs_t::con, I2C_SLA_IOEXP, malloc(), memset(), pca_regs_t::out, PCA_CONF, PCA_PINV, PCA_POUT, pca_regs_t::pol, and TwMasterRegWrite().

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int IOExpPinConfigSet	(	int	bank,
		int	bit,
		uint32_t	flags
	)

Definition at line 102 of file pca9555.c.

References pca_regs_t::con, GPIO_CFG_INVERT, GPIO_CFG_NORM, GPIO_CFG_OUTPUT, I2C_SLA_IOEXP, pca_regs_t::out, PCA_CONF, PCA_PINV, PCA_POUT, pca_regs_t::pol, and TwMasterRegWrite().

Referenced by InitKEY(), and InitLED().

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int IOExpRawWrite	(	int	bank,
		int	value
	)

Definition at line 129 of file pca9555.c.

References I2C_SLA_IOEXP, pca_regs_t::out, PCA_POUT, and TwMasterRegWrite().

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int IOExpRawRead	(	int	bank,
		int *	value
	)

Definition at line 143 of file pca9555.c.

References I2C_SLA_IOEXP, PCA_PINP, and TwMasterRegRead().

Referenced by sys_key().

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int IOExpGetBit	(	int	bank,
		int	bit,
		int *	value
	)

Definition at line 156 of file pca9555.c.

References I2C_SLA_IOEXP, PCA_PINP, and TwMasterRegRead().

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int IOExpSetBitHigh	(	int	bank,
		int	bit
	)

Definition at line 173 of file pca9555.c.

References I2C_SLA_IOEXP, pca_regs_t::out, PCA_POUT, and TwMasterRegWrite().

Referenced by InitLED(), and IOExpSetBit().

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int IOExpSetBitLow	(	int	bank,
		int	bit
	)

Definition at line 187 of file pca9555.c.

References I2C_SLA_IOEXP, pca_regs_t::out, PCA_POUT, and TwMasterRegWrite().

Referenced by IOExpSetBit().

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int IOExpSetBit	(	int	bank,
		int	bit,
		int	value
	)

Definition at line 201 of file pca9555.c.

References IOExpSetBitHigh(), and IOExpSetBitLow().

Referenced by NutSetLed().

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Variable Documentation

pca_regs_t* pca_ctrl = NULL

Definition at line 72 of file pca9555.c.