qdec.h File Reference

Low-level QDEC peripheral driver interface definitions. More...

Detailed Description

Low-level QDEC peripheral driver interface definitions.

Author

Gilles DOFFE gdoff.nosp@m.e@gm.nosp@m.ail.c.nosp@m.om

Definition in file qdec.h.

#include <stdint.h>
#include <limits.h>
#include "periph_cpu.h"
#include "periph_conf.h"

Include dependency graph for qdec.h:

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Data Structures
struct	qdec_isr_ctx_t
	Default interrupt context entry holding callback and argument. More...

Macros
#define	QDEC_DEV(x)
	Default QDEC access macro.
#define	QDEC_UNDEF   (UINT_FAST8_MAX)
	Default QDEC undefined value.

Typedefs
typedef uint_fast8_t	qdec_t
	Default QDEC type definition.
typedef void(*	qdec_cb_t) (void *arg)
	Signature of event callback functions triggered from interrupts.

Enumerations
enum	qdec_mode_t { QDEC_X1 , QDEC_X2 , QDEC_X4 }
	Default QDEC mode definition. More...

Functions
int32_t	qdec_init (qdec_t dev, qdec_mode_t mode, qdec_cb_t cb, void *arg)
	Initialize a QDEC device.
int32_t	qdec_read (qdec_t dev)
	Read the current value of the given qdec device.
int32_t	qdec_read_and_reset (qdec_t dev)
	Read the current value of the given qdec device and reset it.
void	qdec_start (qdec_t qdec)
	Start the given qdec timer.
void	qdec_stop (qdec_t qdec)
	Stop the given qdec timer.