From a6ab1504058304012791281f9eb42c262745888f Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Fri, 19 May 2023 21:21:27 +1000
Subject: Add tinyfsm, start converting core functions to an FSM-based event
 loop

---
 lib/tinyfsm/examples/elevator/motor.cpp | 60 +++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 lib/tinyfsm/examples/elevator/motor.cpp

(limited to 'lib/tinyfsm/examples/elevator/motor.cpp')

diff --git a/lib/tinyfsm/examples/elevator/motor.cpp b/lib/tinyfsm/examples/elevator/motor.cpp
new file mode 100644
index 00000000..b4668070
--- /dev/null
+++ b/lib/tinyfsm/examples/elevator/motor.cpp
@@ -0,0 +1,60 @@
+#include <tinyfsm.hpp>
+#include "motor.hpp"
+#include <iostream>
+
+
+// ----------------------------------------------------------------------------
+// Motor states
+//
+
+class Stopped
+: public Motor
+{
+  void entry() override {
+    std::cout << "Motor: stopped" << std::endl;
+    direction = 0;
+  };
+};
+
+class Up
+: public Motor
+{
+  void entry() override {
+    std::cout << "Motor: moving up" << std::endl;
+    direction = 1;
+  };
+};
+
+class Down
+: public Motor
+{
+  void entry() override {
+    std::cout << "Motor: moving down" << std::endl;
+    direction = -1;
+  };
+};
+
+
+// ----------------------------------------------------------------------------
+// Base State: default implementations
+//
+
+void Motor::react(MotorStop const &) {
+  transit<Stopped>();
+}
+
+void Motor::react(MotorUp const &) {
+  transit<Up>();
+}
+
+void Motor::react(MotorDown const &) {
+  transit<Down>();
+}
+
+int Motor::direction{0};
+
+
+// ----------------------------------------------------------------------------
+// Initial state definition
+//
+FSM_INITIAL_STATE(Motor, Stopped)
-- 
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