...

cxx/control_proto.h

@@ -49,6 +49,10 @@ static constexpr std::string_view CONTROL_PROTO_STR_TRACK_XVEL = "trackXVEL";
 static constexpr std::string_view CONTROL_PROTO_STR_TRACK_YVEL = "trackYVEL";
 static constexpr std::string_view CONTROL_PROTO_STR_STOP = "stop";
 
+// site coordinates
+static constexpr std::string_view CONTROL_PROTO_STR_SITE_LON = "siteLON";
+static constexpr std::string_view CONTROL_PROTO_STR_SITE_LAT = "siteLAT";
+
 static constexpr std::array CONTROL_PROTO_VALID_COMMAND = {CONTROL_PROTO_STR_SLEW_AZALT, CONTROL_PROTO_STR_SLEW_RADEC};
 
 class ControlProtoParser

cxx/mount.h

@@ -0,0 +1,56 @@
+#pragma once
+
+/*  MOUNT CONTROL COMPONENTS LIBRARY  */
+
+#include <concepts>
+#include <cstdint>
+#include <functional>
+
+namespace mcc
+{
+
+enum class MccMountType : uint8_t { GERMAN_TYPE, FORK_TYPE, CROSSAXIS_TYPE, ALTAZ_TYPE };
+
+
+// mount state type concept
+template <typename T>
+concept mcc_mount_state_c = requires(T t, const T t_const) {
+    typename T::state_id_t;
+    { t.ident() } -> std::same_as<typename T::state_id_t>;
+
+    typename T::context_t;
+    { t.enter(std::declval<const typename T::context_t&>()) } -> std::same_as<void>;
+    { t.exit(std::declval<const typename T::context_t&>()) } -> std::same_as<void>;
+};
+
+
+
+// implements a Finite State Machine Pattern
+template <MccMountType MOUNT_TYPE>
+class MccMount
+{
+public:
+    static constexpr MccMountType mountType = MOUNT_TYPE;
+
+
+    MccMount()
+    {
+        _exitCurrentState = []() {};  // do nothing
+    }
+
+    virtual ~MccMount() {}
+
+    template <mcc_mount_state_c StateT>
+    void setMountState(StateT& state)
+    {
+        _exitCurrentState();  // exit from current state
+        _exitCurrentState = [&state, this]() { state.exit(this); };
+
+        state.enter(this);
+    }
+
+protected:
+    std::function<void()> _exitCurrentState;
+};
+
+}  // namespace mcc