mirror of https://github.com/joan2937/pigpio
44 lines
893 B
C++
44 lines
893 B
C++
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#ifndef WIEGAND_HPP
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#define WIEGAND_HPP
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#include <stdint.h>
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typedef void (*WiegandCB_t)(int, uint32_t);
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class Wiegand
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{
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int mygpio_0, mygpio_1, mytimeout, in_code, bits;
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WiegandCB_t mycallback;
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uint32_t num;
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uint32_t code_timeout;
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void _cb(int gpio, int level, uint32_t tick);
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/* Need a static callback to link with C. */
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static void _cbEx(int gpio, int level, uint32_t tick, void *user);
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public:
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Wiegand(int gpio_0, int gpio_1, WiegandCB_t callback, int timeout=5);
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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
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the 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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*/
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void cancel(void);
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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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};
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#endif
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