Juergen Gnoss / Mbed 2 deprecated PolledQEI

A polled Quadrature encoder Class

Dependencies:   mbed

PolledQEI.h@0:7c16b1d2f01e, 2011-08-30 (annotated)

Committer:
jgnoss
Date:
Tue Aug 30 19:52:34 2011 +0000
Revision:
0:7c16b1d2f01e
Child:
1:72e6e124a7e6
Working example

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jgnoss 0:7c16b1d2f01e 1 #ifndef _POLLED_QEI_H
jgnoss 0:7c16b1d2f01e 2 #define _POLLED_QEI_H
jgnoss 0:7c16b1d2f01e 3
jgnoss 0:7c16b1d2f01e 4 #define CW 0
jgnoss 0:7c16b1d2f01e 5 #define CCW 1
jgnoss 0:7c16b1d2f01e 6
jgnoss 0:7c16b1d2f01e 7
jgnoss 0:7c16b1d2f01e 8 class PolledQEI {
jgnoss 0:7c16b1d2f01e 9 public:
jgnoss 0:7c16b1d2f01e 10
jgnoss 0:7c16b1d2f01e 11
jgnoss 0:7c16b1d2f01e 12
jgnoss 0:7c16b1d2f01e 13 PolledQEI() {
jgnoss 0:7c16b1d2f01e 14 error("Constructor need 2 parameters");
jgnoss 0:7c16b1d2f01e 15 };
jgnoss 0:7c16b1d2f01e 16
jgnoss 0:7c16b1d2f01e 17 /** PolledQEI constructor
jgnoss 0:7c16b1d2f01e 18 *
jgnoss 0:7c16b1d2f01e 19 * @param PinName PhaseA and PinName PhaseB
jgnoss 0:7c16b1d2f01e 20 * are a valid pin that supports DigitalIn
jgnoss 0:7c16b1d2f01e 21 */
jgnoss 0:7c16b1d2f01e 22 PolledQEI(PinName a, PinName b) {
jgnoss 0:7c16b1d2f01e 23 init( a, b, NC );
jgnoss 0:7c16b1d2f01e 24 }
jgnoss 0:7c16b1d2f01e 25
jgnoss 0:7c16b1d2f01e 26 /** PolledQEI constructor
jgnoss 0:7c16b1d2f01e 27 *
jgnoss 0:7c16b1d2f01e 28 * @param PinName PhaseA and PinName PhaseB and PinName PhaseZ
jgnoss 0:7c16b1d2f01e 29 * are a valid pin that supports DigitalIn
jgnoss 0:7c16b1d2f01e 30 */
jgnoss 0:7c16b1d2f01e 31 PolledQEI(PinName a, PinName b, PinName z) {
jgnoss 0:7c16b1d2f01e 32 init( a, b, z );
jgnoss 0:7c16b1d2f01e 33 }
jgnoss 0:7c16b1d2f01e 34
jgnoss 0:7c16b1d2f01e 35 /** PolledQEI destructor
jgnoss 0:7c16b1d2f01e 36 */
jgnoss 0:7c16b1d2f01e 37 ~PolledQEI() {
jgnoss 0:7c16b1d2f01e 38 if ( _ticker ) delete( _ticker );
jgnoss 0:7c16b1d2f01e 39 if ( _phaseA ) delete( _phaseA );
jgnoss 0:7c16b1d2f01e 40 if ( _phaseB ) delete( _phaseB );
jgnoss 0:7c16b1d2f01e 41 if ( _phaseZ ) delete( _phaseZ );
jgnoss 0:7c16b1d2f01e 42 }
jgnoss 0:7c16b1d2f01e 43
jgnoss 0:7c16b1d2f01e 44 /** Set the sampling time in microseconds.
jgnoss 0:7c16b1d2f01e 45 *
jgnoss 0:7c16b1d2f01e 46 * @param int The time between pin samples in microseconds.
jgnoss 0:7c16b1d2f01e 47 */
jgnoss 0:7c16b1d2f01e 48 void setSampleFrequency(int i);
jgnoss 0:7c16b1d2f01e 49 int pos(void);
jgnoss 0:7c16b1d2f01e 50 int dir(void);
jgnoss 0:7c16b1d2f01e 51 int rev(void);
jgnoss 0:7c16b1d2f01e 52
jgnoss 0:7c16b1d2f01e 53
jgnoss 0:7c16b1d2f01e 54 private:
jgnoss 0:7c16b1d2f01e 55
jgnoss 0:7c16b1d2f01e 56
jgnoss 0:7c16b1d2f01e 57 protected:
jgnoss 0:7c16b1d2f01e 58 DigitalIn *_phaseA;
jgnoss 0:7c16b1d2f01e 59 DigitalIn *_phaseB;
jgnoss 0:7c16b1d2f01e 60 InterruptIn *_phaseZ;
jgnoss 0:7c16b1d2f01e 61 Ticker *_ticker;
jgnoss 0:7c16b1d2f01e 62 int _sample_uSec;
jgnoss 0:7c16b1d2f01e 63 unsigned int _actEncPos;
jgnoss 0:7c16b1d2f01e 64 unsigned int _actEncRev;
jgnoss 0:7c16b1d2f01e 65 int _dir;
jgnoss 0:7c16b1d2f01e 66 unsigned int last;
jgnoss 0:7c16b1d2f01e 67
jgnoss 0:7c16b1d2f01e 68 void init(PinName a, PinName b, PinName z);
jgnoss 0:7c16b1d2f01e 69 void check (void);
jgnoss 0:7c16b1d2f01e 70 void countRev(void);
jgnoss 0:7c16b1d2f01e 71
jgnoss 0:7c16b1d2f01e 72 };
jgnoss 0:7c16b1d2f01e 73
jgnoss 0:7c16b1d2f01e 74 #endif