pcf8574.h File Reference

PCF8574 i2c port expander driver (interface). More...

#include <cfg/compiler.h>

Go to the source code of this file.

Data Structures
struct	Pcf8574
	Context for accessing a PCF8574. More...
Defines
#define	PCF8574ID   0x40
	I2C address.
Functions
int	pcf8574_get (Pcf8574 *pcf)
	Read PCF8574 pcf bit status.
bool	pcf8574_put (Pcf8574 *pcf, uint8_t data)
	Write to PCF8574 pcf port data.
bool	pcf8574_init (Pcf8574 *pcf, pcf8574_addr addr)
	Init a PCF8574 on the bus with addr addr.

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Detailed Description

PCF8574 i2c port expander driver (interface).

Version:

Id

ft245rl.c 22301 2008-09-09 16:53:17Z batt

Author:

Francesco Sacchi <batt@develer.com>

Definition in file pcf8574.h.

---

Function Documentation

int pcf8574_get

(

Pcf8574 *

pcf

)

Read PCF8574 pcf bit status.

Returns:

the pins status or EOF on errors.

Definition at line 55 of file pcf8574.c.

bool pcf8574_init	(	Pcf8574 *	pcf,
		pcf8574_addr	addr
	)

Init a PCF8574 on the bus with addr addr.

Returns:

true if device is found, false otherwise.

Definition at line 80 of file pcf8574.c.

bool pcf8574_put	(	Pcf8574 *	pcf,
		uint8_t	data
	)

Write to PCF8574 pcf port data.

Returns:

true if ok, false on errors.

Definition at line 69 of file pcf8574.c.