drv_io_expander.h File Reference

IO expander device API. More...

#include <stdint.h>
#include <sys/ioctl.h>

Go to the source code of this file.

Macros
#define	_IOXIOCBASE   (0x2800)
#define	_IOXIOC(_n)   (_IOC(_IOXIOCBASE, _n))
#define	IOX_SET_MASK   _IOXIOC(1)
	set a bitmask (non-blocking)
#define	IOX_GET_MASK   _IOXIOC(2)
	get a bitmask (blocking)
#define	IOX_SET_MODE   _IOXIOC(3)
	set device mode (non-blocking)
#define	IOX_SET_VALUE   _IOXIOC(4)
	set constant values (non-blocking)

Enumerations
enum	IOX_MODE { IOX_MODE_OFF, IOX_MODE_ON, IOX_MODE_TEST_OUT }

Detailed Description

IO expander device API.