pca9555.c

Included Files

#include <nut/include/compiler.h>

#include <stdlib.h>

#include <nut/include/include2/string.h>

#include <nut/include/memdebug.h>

#include <nut/include/sys/heap.h>

#include <nut/include/sys/event.h>

#include <nut/include/cfg/os.h>

#include <nut/include/dev/twif.h>

#include <nut/include/dev/gpio.h>

#include <nut/include/cfg/pca9555.h>

#include <nut/include/dev/pca9555.h>

Preprocessor definitions

#define I2C_SLA_IOEXP 0x23

< PCA Input register offset

#define PCA_PINP 0

< PCA Output register offset

#define PCA_POUT 2

< PCA Polarity inversion register offset

#define PCA_PINV 4

< PCA Configuration register offset

#define PCA_CONF 6

Typedef pca_regs_t

typedef struct {...} pca_regs_t

`struct`
`{`
`uint8_t out[2];`
`uint8_t pol[2];`
`uint8_t con[2];`
`}`

Global Variable pca_ctrl

pca_regs_t* pca_ctrl

Visible in:		nut/dev/pca9555.c
Used in:	IOExpInit()	nut/dev/pca9555.c
	IOExpPinConfigSet()	nut/dev/pca9555.c
	IOExpRawWrite()	nut/dev/pca9555.c
	IOExpSetBitHigh()	nut/dev/pca9555.c
	IOExpSetBitLow()	nut/dev/pca9555.c

Global Function IOExpGetBit()

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

Prototyped in:	nut/include/dev/pca9555.h
Calls:	NutTwiMasterRegRead()

Global Function IOExpInit()

int IOExpInit ( void )

Prototyped in:	nut/include/dev/pca9555.h
Calls:	malloc()	nut/crt/malloc.c
	memset()	nut/c/string/memset.c
	NutTwiMasterRegWrite()
References Variables:	pca_ctrl	nut/dev/pca9555.c

Global Function IOExpPinConfigSet()

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

Prototyped in:	nut/include/dev/pca9555.h
Calls:	NutTwiMasterRegWrite()
References Variables:	pca_ctrl	nut/dev/pca9555.c

Global Function IOExpRawRead()

int IOExpRawRead ( int bank, int* value )

Prototyped in:	nut/include/dev/pca9555.h
Calls:	NutTwiMasterRegRead()

Global Function IOExpRawWrite()

int IOExpRawWrite ( int bank, int value )

Prototyped in:	nut/include/dev/pca9555.h
Calls:	NutTwiMasterRegWrite()
References Variables:	pca_ctrl	nut/dev/pca9555.c

Global Function IOExpSetBit()

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

Prototyped in:	nut/include/dev/pca9555.h
Calls:	IOExpSetBitHigh()	nut/dev/pca9555.c
	IOExpSetBitLow()	nut/dev/pca9555.c

Global Function IOExpSetBitHigh()

int IOExpSetBitHigh ( int bank, int bit )

Prototyped in:	nut/include/dev/pca9555.h
Calls:	NutTwiMasterRegWrite()
Called by:	IOExpSetBit()	nut/dev/pca9555.c
References Variables:	pca_ctrl	nut/dev/pca9555.c

Global Function IOExpSetBitLow()

int IOExpSetBitLow ( int bank, int bit )

Prototyped in:	nut/include/dev/pca9555.h
Calls:	NutTwiMasterRegWrite()
Called by:	IOExpSetBit()	nut/dev/pca9555.c
References Variables:	pca_ctrl	nut/dev/pca9555.c