codex init

OpticalChannelTester/Buttons.cpp

@@ -0,0 +1,28 @@
+#include "Buttons.h"
+#include "Config.h"
+
+void Button::begin() {
+  pinMode(pin_, BUTTON_ACTIVE_LEVEL == LOW ? INPUT_PULLUP : INPUT_PULLDOWN);
+  raw_ = stable_ = (digitalRead(pin_) == BUTTON_ACTIVE_LEVEL);
+  changedAt_ = millis();
+}
+
+ButtonEvent Button::update(uint32_t now) {
+  const bool sample = (digitalRead(pin_) == BUTTON_ACTIVE_LEVEL);
+  if (sample != raw_) { raw_ = sample; changedAt_ = now; }
+  if (raw_ != stable_ && now - changedAt_ >= BUTTON_DEBOUNCE_MS) {
+    stable_ = raw_;
+    if (stable_) {
+      pressedAt_ = now; nextRepeat_ = now + BUTTON_LONG_PRESS_MS + BUTTON_REPEAT_DELAY_MS;
+      longSent_ = false;
+    } else if (!longSent_) return ButtonEvent::SHORT;
+  }
+  if (stable_ && !longSent_ && now - pressedAt_ >= BUTTON_LONG_PRESS_MS) {
+    longSent_ = true; return ButtonEvent::LONG;
+  }
+  if (stable_ && longSent_ && now >= nextRepeat_) {
+    nextRepeat_ += BUTTON_REPEAT_MS; return ButtonEvent::REPEAT;
+  }
+  return ButtonEvent::NONE;
+}
+