mirror of https://github.com/joan2937/pigpio
26 lines
597 B
C
26 lines
597 B
C
|
#ifndef ROTARY_ENCODER_H
|
||
|
|
#define ROTARY_ENCODER_H
|
||
|
|
|
||
|
|
typedef void (*Pi_Renc_CB_t)(int);
|
||
|
|
|
||
|
|
struct _Pi_Renc_s;
|
||
|
|
|
||
|
|
typedef struct _Pi_Renc_s Pi_Renc_t;
|
||
|
|
|
||
|
|
Pi_Renc_t * Pi_Renc(int gpioA, int gpioB, Pi_Renc_CB_t callback);
|
||
|
|
/*
|
||
|
|
This function establishes a rotary encoder on gpioA and gpioB.
|
||
|
|
|
||
|
|
When the encoder is turned the callback function is called.
|
||
|
|
|
||
|
|
A pointer to a private data type is returned. This should be passed
|
||
|
|
to Pi_Renc_cancel if the rotary encoder is to be cancelled.
|
||
|
|
*/
|
||
|
|
|
||
|
|
void Pi_Renc_cancel(Pi_Renc_t *renc);
|
||
|
|
/*
|
||
|
|
This function releases the resources used by the decoder.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#endif
|