first re-commit.

pigrotarydial.h

@@ -0,0 +1,73 @@
+/*****************************************************************************
+
+    source::worx libPiGPio
+    Copyright © 2022 c.holzheuer
+    chris@sourceworx.org
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    Uses:
+
+    pigpiod_if2 by joan2937, pigpio @ abyz.me.uk
+    https://abyz.me.uk/rpi/pigpio
+
+    sigslot  by 2017 Pierre-Antoine Lacaze
+    https://github.com/palacaze/sigslot
+
+***************************************************************************/
+
+
+#ifndef PIGROTARYDIAL_H
+#define PIGROTARYDIAL_H
+
+
+#include <pigbutton.h>
+#include <pigvalue.h>
+
+
+/**
+ * @brief The pigRotaryDial class
+ *
+ * TODO: flags: step oder detent, inc/dec oder value, set_range range_stop: bis 100 oder 100->0
+ *
+ */
+
+class LIBPIGPIO_EXPORT pigRotaryDial : public pigButton, public pigValue<int>
+{
+
+public:
+
+    pigRotaryDial();
+    explicit pigRotaryDial( pigpio::bcm_t bcmButton, pigpio::bcm_t bcmUp, pigpio::bcm_t bcmDown );
+    virtual ~pigRotaryDial();
+
+    void init( pigpio::bcm_t bcmButton, pigpio::bcm_t bcmUp, pigpio::bcm_t bcmDown );
+
+    virtual void reset();
+
+protected:
+
+    void trigger( pigpio::bcm_t bcm, uint32_t level ) override;
+
+    constexpr const static int Transits[16]=
+    {
+        /* 0000 0001 0010 0011 0100 0101 0110 0111 */
+              0,  -1,   1,   0,   1,   0,   0,  -1,
+        /* 1000 1001 1010 1011 1100 1101 1110 1111 */
+             -1,   0,   0,   1,   0,   1,  -1,   0
+    };
+
+    pigPinIn _pinDown;
+    pigPinIn _pinUp;
+
+    int   _levUp    = 0;
+    int   _levDown  = 0;
+    int   _oldState = -1;
+
+};
+
+
+#endif // PIGROTARYDIAL_H