Jose Marquez / mbed-os-wiegand

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);