This library reads Wiegand, saving it into a buffer, calling a callback function after it is full or a timeout is reached.
Dependents: mbed-os-wiegand-example
This library reads Wiegand, saving it into a buffer, calling a callback function after it is full or a timeout is reached. Data can be extracted as :
- Raw
- Base 10 Integer
- Base 10 String
- Base 16 String
Always call reset after saving Wiegand data.
It automatically calibrates the timeout during the first reading unless specified.
Timeout can be set using setTimout, units are in milliseconds (first call stopCalibrating()).
EventQueue is required for deferring from ISR, it is possible to dispatch the EventQueue from the mainQueue or any other thread.
Diff: wiegand.h
- Revision:
- 2:2c72a6b13593
- Parent:
- 1:5217baef72fd
- Child:
- 3:ea5e0ab156b5
--- a/wiegand.h Sat Apr 27 23:53:14 2019 +0000 +++ b/wiegand.h Wed May 08 18:08:18 2019 +0000 @@ -40,7 +40,8 @@ class Wiegand { private: - Callback<void(void)> _callback; + Callback<void(Wiegand* wiegandReader)> _callback; + InterruptIn _d0; InterruptIn _d1; EventQueue* _eventQueue; @@ -55,6 +56,7 @@ unsigned char _decDigits; bool _firstReading; unsigned char _hexDigits; + unsigned char _id; volatile int* _interPulseGapBuffer; unsigned int _transmissionTimeout; @@ -67,14 +69,16 @@ void _shift_left(volatile unsigned char *ar, int size, int shift); public: - Wiegand(PinName d0, PinName d1, EventQueue* eventQueue, Callback<void(void)> wiegandCallback, unsigned char bits); + Wiegand(PinName d0, PinName d1, EventQueue* eventQueue, unsigned char bits, unsigned char i=0); ~Wiegand(); + void attach(Callback<void(Wiegand *WiegandObj)> wiegandCallback); void calibrateTimeout(void); unsigned char getDecDigits(); void getDecString(volatile char* decString); unsigned char getHexDigits(); void getHexString(volatile char* hexString); + unsigned char getId(); uint8_t* getRaw(void); long double getRawInt(void); unsigned int getTimeout(void);