main: move more tiny objects out of main.cpp

src/inputs/CircadianRhythm.h

@@ -0,0 +1,90 @@
+#pragma once
+#include <Figments.h>
+
+struct ScheduleEntry {
+  uint8_t hour;
+  uint8_t brightness;
+};
+
+std::array<ScheduleEntry, 10> schedule{{
+  {0, 0},
+  {5, 0},
+  {6, 0},
+  {7, 10},
+  {8, 80},
+  {11, 120},
+  {18, 200},
+  {19, 255},
+  {22, 120},
+  {23, 20}
+}};
+
+class CircadianRhythm : public InputSource {
+  private:
+    bool needsUpdate = true;
+  public:
+    CircadianRhythm() : InputSource("CircadianRhythm") {}
+
+    void onStart() {
+      needsUpdate = true;
+    }
+
+    uint8_t brightnessForTime(uint8_t hour, uint8_t minute) const {
+      ScheduleEntry start = schedule.back();
+      ScheduleEntry end = schedule.front();
+      for(ScheduleEntry cur : schedule) {
+        // Find the last hour that is prior to or equal to now
+        if (cur.hour <= hour) {
+          start = cur;
+        } else {
+          break;
+        }
+      }
+      for(ScheduleEntry cur : schedule) {
+        // Find the first hour that is after now
+        // If no such hour exists, we should automatically wrap back to hour 0
+        if (cur.hour > hour) {
+          end = cur;
+          break;
+        }
+      }
+
+      if (start.hour > end.hour) {
+        end.hour += 24;
+      }
+
+      uint16_t startTime = start.hour * 60;
+      uint16_t endTime = end.hour * 60;
+      uint16_t nowTime = hour * 60 + minute;
+
+      uint16_t duration = endTime - startTime;
+      uint16_t curDuration = nowTime - startTime;
+
+      uint8_t frac = map8(curDuration, 0, duration);
+
+      return lerp8by8(start.brightness, end.brightness, frac);
+    }
+
+
+    InputEvent read() {
+      EVERY_N_SECONDS(60) {
+        needsUpdate = true;
+      }
+      if (needsUpdate) {
+        uint8_t hour = 0;
+        uint8_t minute = 0;
+        needsUpdate = false;
+        struct tm timeinfo;
+        if (Platform::getLocalTime(&timeinfo)) {
+          hour = timeinfo.tm_hour;
+          minute = timeinfo.tm_min;
+        } else {
+          hour = 0;
+          minute = 0;
+        }
+        Log.notice("Current time: %d:%d", hour, minute);
+        return InputEvent{InputEvent::SetBrightness, brightnessForTime(hour, minute)};
+      }
+      return InputEvent{};
+    }
+};