charles young / Mbed 2 deprecated GEO_COUNTER_L432KC

Charles Young's development fork. Going forward I only want to push mature code to main repository.

Dependencies:   mbed

Fork of GEO_COUNTER_L432KC by Geo Electronics "Geo Counter"

RotarySwitch.hpp@19:fd3e33641aa7, 2018-09-04 (annotated)

Committer:
Charles David Young
Date:
Tue Sep 04 08:28:34 2018 -0700
Revision:
19:fd3e33641aa7
Child:
20:fb73eaaf0894
Initial implementation of RotarySwitch.  Needs debugging and integration with main.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Charles David Young 19:fd3e33641aa7 1 /**
Charles David Young 19:fd3e33641aa7 2 * @author Charles Young
Charles David Young 19:fd3e33641aa7 3 * This class encapsulates the behavior of the rotary switch to change modes
Charles David Young 19:fd3e33641aa7 4 */
Charles David Young 19:fd3e33641aa7 5
Charles David Young 19:fd3e33641aa7 6 #ifndef RotarySwitch_H
Charles David Young 19:fd3e33641aa7 7 #define RotarySwitch_H
Charles David Young 19:fd3e33641aa7 8
Charles David Young 19:fd3e33641aa7 9 /**
Charles David Young 19:fd3e33641aa7 10 * Includes
Charles David Young 19:fd3e33641aa7 11 */
Charles David Young 19:fd3e33641aa7 12 #include "mbed.h"
Charles David Young 19:fd3e33641aa7 13 #include "QEI.h" // Quadrature Encoder functions
Charles David Young 19:fd3e33641aa7 14
Charles David Young 19:fd3e33641aa7 15 /**
Charles David Young 19:fd3e33641aa7 16 * Quadrature Encoder Interface.
Charles David Young 19:fd3e33641aa7 17 */
Charles David Young 19:fd3e33641aa7 18 class RotarySwitch {
Charles David Young 19:fd3e33641aa7 19
Charles David Young 19:fd3e33641aa7 20 public:
Charles David Young 19:fd3e33641aa7 21
Charles David Young 19:fd3e33641aa7 22 /**
Charles David Young 19:fd3e33641aa7 23 * Constructor.
Charles David Young 19:fd3e33641aa7 24 *
Charles David Young 19:fd3e33641aa7 25 * @param channelA mbed pin for channel A input.
Charles David Young 19:fd3e33641aa7 26 * @param channelB mbed pin for channel B input.
Charles David Young 19:fd3e33641aa7 27 */
Charles David Young 19:fd3e33641aa7 28 RotarySwitch(PinName channelA, PinName channelB);
Charles David Young 19:fd3e33641aa7 29
Charles David Young 19:fd3e33641aa7 30 /**
Charles David Young 19:fd3e33641aa7 31 * Reset the encoder.
Charles David Young 19:fd3e33641aa7 32 *
Charles David Young 19:fd3e33641aa7 33 * Sets the pulses and revolutions count to zero.
Charles David Young 19:fd3e33641aa7 34 */
Charles David Young 19:fd3e33641aa7 35 void GetPosition(void);
Charles David Young 19:fd3e33641aa7 36
Charles David Young 19:fd3e33641aa7 37 private:
Charles David Young 19:fd3e33641aa7 38
Charles David Young 19:fd3e33641aa7 39 PinName channelA_;
Charles David Young 19:fd3e33641aa7 40 PinName channelB_;
Charles David Young 19:fd3e33641aa7 41 Ticker SecTenth_Beat; // .1 second ticker
Charles David Young 19:fd3e33641aa7 42 Ticker Sec_Beat; // 1 second ticker
Charles David Young 19:fd3e33641aa7 43
Charles David Young 19:fd3e33641aa7 44 /**
Charles David Young 19:fd3e33641aa7 45 * Defines
Charles David Young 19:fd3e33641aa7 46 */
Charles David Young 19:fd3e33641aa7 47 #define CPM 0x01
Charles David Young 19:fd3e33641aa7 48 #define CPS 0x02
Charles David Young 19:fd3e33641aa7 49 #define PLS 0x04
Charles David Young 19:fd3e33641aa7 50 #define VOLTS 0x08
Charles David Young 19:fd3e33641aa7 51 #define CNT1 0x10
Charles David Young 19:fd3e33641aa7 52 #define CNT2 0x20
Charles David Young 19:fd3e33641aa7 53 #define HV 0x40
Charles David Young 19:fd3e33641aa7 54 #define MENU 0x80
Charles David Young 19:fd3e33641aa7 55 uint8_t LED_statuses[] = {CPM, CPS, PLS, VOLTS, CNT1, CNT2, HV, MENU};
Charles David Young 19:fd3e33641aa7 56 uint8_t LED_status = CPM;
Charles David Young 19:fd3e33641aa7 57 uint8_t LED_status_index = 0;
Charles David Young 19:fd3e33641aa7 58
Charles David Young 19:fd3e33641aa7 59 DigitalIn QEPB (D9); // Quadrature encoder pushbutton
Charles David Young 19:fd3e33641aa7 60
Charles David Young 19:fd3e33641aa7 61 // QEI class supports the mode wheel. In its most basic function it will tell
Charles David Young 19:fd3e33641aa7 62 // us which direction the wheel is moving (right or left) so that we can
Charles David Young 19:fd3e33641aa7 63 // use it to select the current mode.
Charles David Young 19:fd3e33641aa7 64 QEI Wheel(D12, D11, NC, 16); // Quadrature encoder
Charles David Young 19:fd3e33641aa7 65 int WheelCurrent = 0;
Charles David Young 19:fd3e33641aa7 66 int WheelPrevious = 0;
Charles David Young 19:fd3e33641aa7 67 bool QEPBpressed = false; // only react to button when pressed
Charles David Young 19:fd3e33641aa7 68 int WheelStateTimer = 0;
Charles David Young 19:fd3e33641aa7 69 const int WheelStateTimeout = 5; //timeout for wheel button pushed
Charles David Young 19:fd3e33641aa7 70 enum WheelState {
Charles David Young 19:fd3e33641aa7 71 WHEEL_INACTIVE = 0,
Charles David Young 19:fd3e33641aa7 72 WHEEL_MODE_SELECT = 1,
Charles David Young 19:fd3e33641aa7 73 WHEEL_SUBMODE_SELECT = 2
Charles David Young 19:fd3e33641aa7 74 };
Charles David Young 19:fd3e33641aa7 75 enum WheelStateEvent {
Charles David Young 19:fd3e33641aa7 76 WHEEL_Pressed = 0,
Charles David Young 19:fd3e33641aa7 77 WHEEL_Timeout = 1
Charles David Young 19:fd3e33641aa7 78 };
Charles David Young 19:fd3e33641aa7 79 WheelState currentWheelState;
Charles David Young 19:fd3e33641aa7 80
Charles David Young 19:fd3e33641aa7 81 /**
Charles David Young 19:fd3e33641aa7 82 * Update the pulse count.
Charles David Young 19:fd3e33641aa7 83 *
Charles David Young 19:fd3e33641aa7 84 * Called on every rising/falling edge of channels A/B.
Charles David Young 19:fd3e33641aa7 85 *
Charles David Young 19:fd3e33641aa7 86 * Reads the state of the channels and determines whether a pulse forward
Charles David Young 19:fd3e33641aa7 87 * or backward has occured, updating the count appropriately.
Charles David Young 19:fd3e33641aa7 88 */
Charles David Young 19:fd3e33641aa7 89 void WheelStateMachine(WheelStateEvent event);
Charles David Young 19:fd3e33641aa7 90
Charles David Young 19:fd3e33641aa7 91 void RotatySwitch::UpdateOutput();
Charles David Young 19:fd3e33641aa7 92 void RotatySwitch::UpdateInput();
Charles David Young 19:fd3e33641aa7 93 };
Charles David Young 19:fd3e33641aa7 94
Charles David Young 19:fd3e33641aa7 95 #endif /* RotarySwitch_H */