mirror of https://github.com/joan2937/pigpio
33 lines
779 B
C
33 lines
779 B
C
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#ifndef WIEGAND_H
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#define WIEGAND_H
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#include <stdint.h>
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typedef void (*Pi_Wieg_CB_t)(int, uint32_t);
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struct _Pi_Wieg_s;
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typedef struct _Pi_Wieg_s Pi_Wieg_t;
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Pi_Wieg_t *Pi_Wieg(int gpio_0, int gpio_1, Pi_Wieg_CB_t callback, int timeout);
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/*
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This function establishes a Wiegand decoder on gpio_0 and gpio_1.
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A gap of timeout milliseconds without a new bit indicates the
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end of a code.
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When the code is ended the callback function is called with the code
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bit length and value.
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A pointer to a private data type is returned. This should be passed
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to Pi_Wieg_cancel if the decoder is to be cancelled.
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*/
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void Pi_Wieg_cancel(Pi_Wieg_t *wieg);
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/*
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This function releases the resources used by the decoder.
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*/
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#endif
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