Merge branch 'feature/weather-page'

.forgejo/workflows/compile.yml

@@ -11,4 +11,5 @@ jobs:
       - name: Compile
         run: |
           cd ${{ github.workspace }}
+          echo -en '#define WIFI_SSID "<ssid>"\n#define WIFI_PASS "<pass>"\n' >src/secrets.h
           /root/.platformio/penv/bin/pio run

.gitignore

@@ -1,2 +1,3 @@
 .pio
 .vscode/**
+src/secrets.h

lib/Rtc_Pcf8563/Rtc_Pcf8563.h

@@ -102,7 +102,8 @@
 
 /* date format flags */
 #define RTCC_DATE_WORLD     0x01
-#define RTCC_DATE_ASIA      0x02
+#define RTCC_DATE_ISO8601   0x02
+#define RTCC_DATE_ASIA      0x02 // It's not "asian", it's ISO8601, that anybody with any sense uses
 #define RTCC_DATE_US        0x04
 /* time format flags */
 #define RTCC_TIME_HMS       0x01
@@ -198,6 +199,7 @@ class Rtc_Pcf8563 {
     byte getTimerValue();
 
     unsigned long getTimestamp();	// return unix timestamp
+    uint64_t getTimestamp64(); // Fixed for 2038+
 
     // Sets date/time to static fixed values, disable all alarms
     // use zeroClock() above to guarantee lowest possible values instead.

src/Icons.h

@@ -2,11 +2,24 @@
 
 namespace Icons
 {
-  const unsigned char steps [] PROGMEM = {
+  // 19x23
+  const unsigned char steps[] PROGMEM = {
     0x00, 0x03, 0xc0, 0x00, 0x07, 0xe0, 0x00, 0x07, 0xe0, 0x00, 0x0f, 0xe0, 0x78, 0x0f, 0xe0, 0xfc,
     0x0f, 0xe0, 0xfc, 0x0f, 0xe0, 0xfc, 0x0f, 0xe0, 0xfe, 0x0f, 0xe0, 0xfe, 0x07, 0xc0, 0xfe, 0x07,
     0xc0, 0xfe, 0x07, 0x80, 0xfe, 0x00, 0x00, 0x7c, 0x0e, 0x00, 0x7c, 0x0f, 0x80, 0x7c, 0x1f, 0x80,
     0x20, 0x1f, 0x00, 0x06, 0x0f, 0x00, 0x3e, 0x0e, 0x00, 0x3e, 0x00, 0x00, 0x3f, 0x00, 0x00, 0x1e,
     0x00, 0x00, 0x1e, 0x00, 0x00
   };
-};
+
+  // 29x23
+  const unsigned char city[] PROGMEM = {
+    0x00, 0x07, 0xf8, 0x00, 0x00, 0x07, 0xfc, 0x00, 0x00, 0x07, 0xfc, 0x00, 0x0e, 0x07, 0x1c, 0x00, 
+    0x1f, 0x87, 0x1c, 0x00, 0x3f, 0xc7, 0x1c, 0xc0, 0x3f, 0xc7, 0xfc, 0xc0, 0x3f, 0xc7, 0x1c, 0xc0, 
+    0x7f, 0xc7, 0x1c, 0xc0, 0x7f, 0xe7, 0x1f, 0xf8, 0xff, 0xe7, 0xff, 0xf8, 0xff, 0xe7, 0x1e, 0x38, 
+    0xff, 0xe7, 0x1e, 0x38, 0xff, 0xe7, 0x1e, 0x38, 0x06, 0x07, 0x1e, 0x38, 0x06, 0x07, 0xff, 0xf8, 
+    0x06, 0x07, 0xfe, 0x38, 0x06, 0x07, 0xfe, 0x38, 0x06, 0x07, 0xfe, 0x38, 0x06, 0x07, 0xff, 0xf8, 
+    0x06, 0x07, 0xff, 0xf8, 0x06, 0x07, 0xff, 0xf8, 0x06, 0x07, 0xff, 0xf8
+  };
+}
+
+#include "WeatherIcons.h"

src/Main.cpp

@@ -5,7 +5,7 @@ WatchFace watchy;
 void setup()
 {
   Serial.begin(9600);
-  watchy.Init();
+  watchy.Wake();
 }
 
 void loop()

src/WatchFace.cpp

@@ -1,28 +1,37 @@
 #include "WatchFace.h"
-#include "SevenSegment.h"
+#include "WatchFacePages/Clock.h"
-#include "Icons.h"
+
 #include <cmath>
-#include <Fonts/FreeSans9pt7b.h>
-#include <Fonts/FreeMonoBold9pt7b.h>
-#include <Fonts/FreeMonoBold12pt7b.h>
 
-RTC_DATA_ATTR bool WatchFace::m_menuSetup = false;
 RTC_DATA_ATTR bool WatchFace::m_inMenu = false;
-RTC_DATA_ATTR int WatchFace::m_tzOffset = TZ_OFFSET;
+RTC_DATA_ATTR Menu WatchFace::m_menu;
-Menu WatchFace::m_menu;
+RTC_DATA_ATTR uint8_t WatchFace::m_watchFacePage;
 
-void WatchFace::Setup() // Called after hardware is set up
+void WatchFace::InitBoot()
 {
-	if (!m_menuSetup) {
+  m_menu.Init(m_display);
-		m_menu.Init(m_display);
+  SetupVolatileMenuStuff();
-	}
+  m_menu.Reset();
 
-	SetupVolatileMenuStuff();
+  if(m_features.wifi.Connect()) {
+    SyncNTPTime();
+    m_features.wifi.Disconnect();
+  }
 
-	if (!m_menuSetup) {
+  for (auto & page : m_pages) {
-		m_menu.Reset();
+    page->InitBoot();
-		m_menuSetup = true;
+  }
-	}
+
+  static_cast<WatchFacePages::Weather *>(m_pages[1].get())->Resync();
+}
+
+void WatchFace::InitWake()
+{
+  SetupVolatileMenuStuff();
+
+  for (auto & page : m_pages) {
+    page->InitWake();
+  }
 }
 
 void WatchFace::HandleButtonPress(uint64_t buttonMask)
@@ -64,6 +73,30 @@ void WatchFace::HandleButtonPress(uint64_t buttonMask)
           }
         }
 
+        delay(10);
+      }
+    } else if (buttonMask & UP_BTN_MASK) {
+      m_watchFacePage = (m_watchFacePage + 1) % m_pages.size();
+      ShowWatchFace(false);
+
+      while (true) {
+        // Wait for button release
+        if (digitalRead(UP_BTN_PIN) == LOW){
+          break;
+        }
+
+        delay(10);
+      }
+    } else if (buttonMask & DOWN_BTN_MASK) {
+      m_watchFacePage = (m_watchFacePage + m_pages.size() - 1) % m_pages.size();
+      ShowWatchFace(false);
+
+      while (true) {
+        // Wait for button release
+        if (digitalRead(DOWN_BTN_PIN) == LOW){
+          break;
+        }
+
         delay(10);
       }
     }
@@ -86,171 +119,115 @@ void WatchFace::DrawWatchFace(bool partialRefresh)
     return;
   }
 
-  m_display.setFullWindow();
+  m_pages[m_watchFacePage]->DrawPage(partialRefresh);
 
-  m_display.fillScreen(GxEPD_WHITE);
+  // Resync weather in background
-  DrawBatteryIcon();
+  if (m_watchFacePage != 1) {
-
+    static_cast<WatchFacePages::Weather *>(m_pages[1].get())->Resync();
-	tmElements_t currentTime;
-	m_RTC.Get(currentTime, m_tzOffset);
-	SevenSegment sevenSegment(30, 60, 6, 5, 5);
-
-  if (currentTime.Hour < 10) {
-    sevenSegment.DrawDigit(m_display, 0, 15, 75, GxEPD_BLACK);
-  } else {
-    sevenSegment.DrawDigit(m_display, currentTime.Hour / 10, 20, 75, GxEPD_BLACK);
   }
-
-  sevenSegment.DrawDigit(m_display, currentTime.Hour % 10, 60, 75, GxEPD_BLACK);
-
-  if (currentTime.Minute < 10) {
-    sevenSegment.DrawDigit(m_display, 0, 110, 75, GxEPD_BLACK);
-  } else {
-    sevenSegment.DrawDigit(m_display, currentTime.Minute / 10, 110, 75, GxEPD_BLACK);
-  }
-
-  sevenSegment.DrawDigit(m_display, currentTime.Minute % 10, 150, 75, GxEPD_BLACK);
-
-  m_display.fillRect(97, 90, 5, 5, GxEPD_BLACK);
-  m_display.fillRect(97, 110, 5, 5, GxEPD_BLACK);
-
-  m_display.display(partialRefresh);
-}
-
-void WatchFace::DrawBatteryIcon()
-{
-  m_display.fillRect(200 - 48, 5, 43, 23, GxEPD_BLACK);
-  m_display.fillRect(200 - 46, 7, 39, 19, GxEPD_WHITE);
-  float VBAT = GetBatteryVoltage();
-  float level = (VBAT - 3.6f) / 0.6f;
-  if (level > 1.0f) {
-    level = 1.0f;
-  } else if (level < 0.0f) {
-    level = 0.0f;
-  }
-  level = level * level * (3.0f - 2.0f * level);
-
-  m_display.fillRect(200 - 44, 9, (int)std::round(35.0f * level), 15, GxEPD_BLACK);
-
-  int x = 200 - 85;
-  int intLevel = (int)std::round(100.0f * level);
-  if (intLevel == 100) {
-    x -= 13;
-  }
-
-  m_display.setFont(&FreeMonoBold9pt7b);
-  m_display.setCursor(x, 22);
-  m_display.setTextColor(GxEPD_BLACK);
-  m_display.print(intLevel);
-  m_display.print("%");
-
-  m_display.setFont(&FreeMonoBold12pt7b);
-  m_display.drawBitmap(10, 177, Icons::steps, 19, 23, GxEPD_BLACK);
-  m_display.setCursor(40, 195);
-  m_display.print(GetSteps());
 }
 
 void WatchFace::SetupVolatileMenuStuff()
 {
-	static const std::vector<MenuPage> menuPages = {
+  static const std::vector<MenuPage> menuPages = {
-		{
+    {
-			0, // backPageNum
+      0, // backPageNum
-			"WATCHY", // title
+      "WATCHY", // title
-			ALIGNMENT_CENTER, // titleAlignment
+      ALIGNMENT_CENTER, // titleAlignment
-			"", // body
+      "", // body
-			{ // Menu items
+      { // Menu items
-				{
+        {
-					"Sync NTP", // title
+          "Sync NTP", // title
-					nullptr, // callback
+          nullptr, // callback
-					1 // pageNum
+          1 // pageNum
-				},
+        },
-				{
+        {
-					"Set Timezone", // title
+          "Set Timezone", // title
-					nullptr, // callback
+          nullptr, // callback
-					2 // pageNum
+          2 // pageNum
-				},
+        },
         {
           "Reset Steps", // title
           nullptr, // callback
           3 // pageNum
         },
-				{
+        {
-					"Back", // title
+          "Back", // title
-					nullptr, // callback
+          nullptr, // callback
-					0 // pageNum
+          0 // pageNum
-				}
+        }
-			},
+      },
-		},
+    },
-		{
+    {
-			0, // backPageNum
+      0, // backPageNum
-			"SYNC NTP", // title
+      "SYNC NTP", // title
-			ALIGNMENT_CENTER, // titleAlignment
+      ALIGNMENT_CENTER, // titleAlignment
-			"Sync with:\n" NTP_SERVER, // body
+      "Sync with:\n" NTP_SERVER, // body
-			{ // Menu items
+      { // Menu items
-				{
+        {
-					"Sync", // title
+          "Sync", // title
-					std::bind(&WatchFace::MenuNTPSyncSelected, this), // callback
+          std::bind(&WatchFace::MenuNTPSyncSelected, this), // callback
-					1 // pageNum
+          1 // pageNum
-				},
+        },
-				{
+        {
-					"Back", // title
+          "Back", // title
-					nullptr, // callback
+          nullptr, // callback
-					0 // pageNum
+          0 // pageNum
-				}
+        }
-			},
+      },
-		},
+    },
-		{
+    {
-			0, // backPageNum
+      0, // backPageNum
-			"TIMEZONE", // title
+      "TIMEZONE", // title
-			ALIGNMENT_CENTER, // titleAlignment
+      ALIGNMENT_CENTER, // titleAlignment
-			"", // body
+      "", // body
-			{ // Menu items
+      { // Menu items
-				{
+        {
-					"+0", // title
+          "+0", // title
-					std::bind(&WatchFace::MenuTimeZoneSelected, this, 0), // callback
+          std::bind(&WatchFace::MenuTimeZoneSelected, this, 0), // callback
-					0 // pageNum
+          0 // pageNum
-				},
+        },
-				{
+        {
-					"+1", // title
+          "+1", // title
-					std::bind(&WatchFace::MenuTimeZoneSelected, this, 3600), // callback
+          std::bind(&WatchFace::MenuTimeZoneSelected, this, 3600), // callback
-					0 // pageNum
+          0 // pageNum
-				},
+        },
-				{
+        {
-					"+2", // title
+          "+2", // title
-					std::bind(&WatchFace::MenuTimeZoneSelected, this, 7200), // callback
+          std::bind(&WatchFace::MenuTimeZoneSelected, this, 7200), // callback
-					0 // pageNum
+          0 // pageNum
-				},
+        },
-				{
+        {
-					"+3", // title
+          "+3", // title
-					std::bind(&WatchFace::MenuTimeZoneSelected, this, 10800), // callback
+          std::bind(&WatchFace::MenuTimeZoneSelected, this, 10800), // callback
-					0 // pageNum
+          0 // pageNum
-				},
+        },
-				{
+        {
-					"Back", // title
+          "Back", // title
-					nullptr, // callback
+          nullptr, // callback
-					0 // pageNum
+          0 // pageNum
-				}
+        }
-			},
+      },
-		},
+    },
-		{
+    {
-			0, // backPageNum
+      0, // backPageNum
-			"RESET STEPS", // title
+      "RESET STEPS", // title
-			ALIGNMENT_CENTER, // titleAlignment
+      ALIGNMENT_CENTER, // titleAlignment
-			"Confirm?", // body
+      "Confirm?", // body
-			{ // Menu items
+      { // Menu items
-				{
+        {
-					"No", // title
+          "No", // title
-					nullptr, // callback
+          nullptr, // callback
-					0 // pageNum
+          0 // pageNum
-				},
+        },
-				{
+        {
-					"Yes", // title
+          "Yes", // title
-					std::bind(&WatchFace::MenuConfirmResetSteps, this), // callback
+          std::bind(&WatchFace::MenuConfirmResetSteps, this), // callback
-					0 // pageNum
+          0 // pageNum
-				}
+        }
-			}
+      }
-		}
+    }
-	};
+  };
 
   m_menu.SetPages(menuPages);
   m_menu.SetExitCallback(std::bind(&WatchFace::MenuExited, this));
@@ -266,32 +243,36 @@ void WatchFace::MenuExited()
 
 void WatchFace::MenuNTPSyncSelected()
 {
-  ConnectWiFi();
+  if (!m_features.wifi.Connect()) {
-  SyncNTPTime();
+    return;
-  DisconnectWiFi();
+  }
-  m_RTC.Resync();
 
-	if (m_inMenu) {
+  SyncNTPTime();
-		m_inMenu = false;
+  m_features.wifi.Disconnect();
-		m_menu.Reset();
+
-		DrawWatchFace(false);
+  if (m_inMenu) {
-	}
+    m_inMenu = false;
+    m_menu.Reset();
+    DrawWatchFace(false);
+  }
+
+  m_features.rtc.Resync();
 }
 
 void WatchFace::MenuTimeZoneSelected(int tzOffset)
 {
-	m_tzOffset = tzOffset;
+  m_features.storage.SetTzOffset(tzOffset);
-
+
-	if (m_inMenu) {
+  if (m_inMenu) {
-		m_inMenu = false;
+    m_inMenu = false;
-		m_menu.Reset();
+    m_menu.Reset();
-		DrawWatchFace(false);
+    DrawWatchFace(false);
-	}
+  }
-}
+}
-
+
-void WatchFace::MenuConfirmResetSteps()
+void WatchFace::MenuConfirmResetSteps()
-{
+{
-  ResetSteps();
+  m_features.stepCounter.ResetSteps();
 
   if (m_inMenu) {
     m_inMenu = false;

src/WatchFace.h

@@ -2,21 +2,28 @@
 
 #include "Watchy.h"
 #include "Menu.h"
+#include "WatchFacePages/Clock.h"
+#include "WatchFacePages/Weather.h"
+#include <memory>
 
 class WatchFace : public Watchy
 {
 public:
-  void Setup() override; // Called after hardware is set up
+  void InitBoot() override; // Called once when the watch starts up
+  void InitWake() override; // Called every time the watch wakes from sleep
   void HandleButtonPress(uint64_t buttonMask) override;
   void HandleDoubleTap() override;
   void HandleTilt() override;
   void DrawWatchFace(bool partialRefresh = false) override;
 
 private:
-  RTC_DATA_ATTR static bool m_menuSetup;
   RTC_DATA_ATTR static bool m_inMenu;
   RTC_DATA_ATTR static Menu m_menu;
-  RTC_DATA_ATTR static int m_tzOffset;
+  RTC_DATA_ATTR static uint8_t m_watchFacePage;
+  std::vector<std::shared_ptr<WatchFacePages::Page>> m_pages = {
+    std::make_shared<WatchFacePages::Clock>(m_display, m_features),
+    std::make_shared<WatchFacePages::Weather>(m_display, m_features)
+  };
 
   void SetupVolatileMenuStuff();
   void DrawBatteryIcon();

src/WatchFacePages/Clock.cpp

@@ -0,0 +1,111 @@
+#include "Clock.h"
+#include "../SevenSegment.h"
+#include "../Icons.h"
+#include <Fonts/FreeSans9pt7b.h>
+#include <Fonts/FreeSans12pt7b.h>
+#include <sstream>
+
+WatchFacePages::Clock::Clock(WatchyDisplay & display, WatchFeatures::WatchFeatures & features)
+  : m_display(display), m_features(features)
+{
+}
+
+void WatchFacePages::Clock::InitBoot()
+{
+}
+
+void WatchFacePages::Clock::InitWake()
+{
+}
+
+void WatchFacePages::Clock::DrawPage(bool partialRefresh)
+{
+  m_display.setFullWindow();
+
+  m_display.fillScreen(GxEPD_WHITE);
+  DrawBatteryIcon();
+
+  // Get current time and offset by timezone
+  tmElements_t currentTime;
+  m_features.rtc.Get(currentTime);
+  std::string date = m_features.rtc.GetDateString();
+  int tzOffset = m_features.storage.GetTzOffset();
+  m_features.rtc.OffsetTime(currentTime, tzOffset);
+
+
+	SevenSegment sevenSegment(30, 60, 6, 5, 5);
+
+  if (currentTime.Hour < 10) {
+    sevenSegment.DrawDigit(m_display, 0, 15, 65, GxEPD_BLACK);
+  } else {
+    sevenSegment.DrawDigit(m_display, currentTime.Hour / 10, 20, 65, GxEPD_BLACK);
+  }
+
+  sevenSegment.DrawDigit(m_display, currentTime.Hour % 10, 60, 65, GxEPD_BLACK);
+
+  if (currentTime.Minute < 10) {
+    sevenSegment.DrawDigit(m_display, 0, 110, 65, GxEPD_BLACK);
+  } else {
+    sevenSegment.DrawDigit(m_display, currentTime.Minute / 10, 110, 65, GxEPD_BLACK);
+  }
+
+  sevenSegment.DrawDigit(m_display, currentTime.Minute % 10, 150, 65, GxEPD_BLACK);
+
+  m_display.fillRect(97, 80, 5, 5, GxEPD_BLACK);
+  m_display.fillRect(97, 100, 5, 5, GxEPD_BLACK);
+
+  // Print day and date
+  const char * weekDays[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"};
+  const char * dow = weekDays[currentTime.Wday - 1];
+
+  m_display.setFont(&FreeSans9pt7b);
+  m_display.setTextColor(GxEPD_BLACK);
+  m_display.setCursor(15, 150);
+  m_display.print(dow);
+
+  int16_t x, y;
+  uint16_t w, h;
+  m_display.getTextBounds(date.c_str(), 0, 0, &x, &y, &w, &h);
+  m_display.setCursor(180 - w, 150);
+  m_display.print(m_features.rtc.GetDateString().c_str());
+
+  // Seperator
+  m_display.fillRect(15, 127, 170, 2, GxEPD_BLACK);
+
+  // Steps
+  m_display.setFont(&FreeSans12pt7b);
+  m_display.setTextColor(GxEPD_BLACK);
+  m_display.drawBitmap(10, 177, Icons::steps, 19, 23, GxEPD_BLACK);
+  m_display.setCursor(40, 195);
+  m_display.print(m_features.stepCounter.GetSteps());
+
+  m_display.display(partialRefresh);
+}
+
+void WatchFacePages::Clock::DrawBatteryIcon()
+{
+  m_display.fillRect(200 - 48, 5, 43, 23, GxEPD_BLACK);
+  m_display.fillRect(200 - 46, 7, 39, 19, GxEPD_WHITE);
+  int intLevel = m_features.battery.GetPercentage();
+  float level = intLevel / 100.0f;
+
+  m_display.fillRect(200 - 44, 9, (int)std::round(35.0f * level), 15, GxEPD_BLACK);
+
+  int16_t x = 200 - 85;
+  if (intLevel == 100) {
+    x -= 13;
+  }
+
+  std::ostringstream oss;
+  oss << intLevel << "%";
+
+  m_display.setFont(&FreeSans9pt7b);
+  m_display.setTextColor(GxEPD_BLACK);
+
+  int16_t y;
+  uint16_t w, h;
+  m_display.getTextBounds(oss.str().c_str(), 0, 0, &x, &y, &w, &h);
+
+  m_display.setCursor(142 - w, 22);
+  m_display.print(oss.str().c_str());
+}

src/WatchFacePages/Clock.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "Page.h"
+#include "../WatchyDisplay.h"
+#include "../WatchFeatures/WatchFeatures.h"
+
+namespace WatchFacePages
+{
+  class Clock;
+}
+
+class WatchFacePages::Clock : public WatchFacePages::Page
+{
+public:
+  Clock(WatchyDisplay & display, WatchFeatures::WatchFeatures & features);
+  void InitBoot() override;
+  void InitWake() override;
+  void DrawPage(bool partialRefresh = false) override;
+
+private:
+  void DrawBatteryIcon();
+
+  WatchyDisplay & m_display;
+  WatchFeatures::WatchFeatures & m_features;
+};

src/WatchFacePages/Page.h

@@ -0,0 +1,15 @@
+#pragma once
+
+namespace WatchFacePages
+{
+  class Page;
+}
+
+class WatchFacePages::Page
+{
+public:
+  Page() {};
+  virtual void InitBoot() {};
+  virtual void InitWake() {};
+  virtual void DrawPage(bool partialRefresh = false) = 0;
+};

src/WatchFacePages/Weather.cpp

@@ -0,0 +1,432 @@
+#include "Weather.h"
+#include "../SevenSegment.h"
+#include "../Icons.h"
+#include <Fonts/FreeSans9pt7b.h>
+#include <Fonts/FreeSansBold9pt7b.h>
+#include <Fonts/FreeSans12pt7b.h>
+#include <Fonts/FreeSans18pt7b.h>
+#include <HTTPClient.h>
+#include <math.h>
+#include <sstream>
+#include <iomanip>
+
+RTC_DATA_ATTR uint64_t WatchFacePages::Weather::m_lastSyncTime = 0;
+RTC_DATA_ATTR uint64_t WatchFacePages::Weather::m_lastSyncAttemptTime = 0;
+RTC_DATA_ATTR int WatchFacePages::Weather::m_lastCalculatedDay = 0XFFFFFFFF;
+RTC_DATA_ATTR double WatchFacePages::Weather::m_locationLat = DEFAULT_LATITUDE;
+RTC_DATA_ATTR double WatchFacePages::Weather::m_locationLon = DEFAULT_LONGITUDE;
+RTC_DATA_ATTR char WatchFacePages::Weather::m_locationCity[128];
+
+RTC_DATA_ATTR uint8_t WatchFacePages::Weather::m_sunriseHour;
+RTC_DATA_ATTR uint8_t WatchFacePages::Weather::m_sunriseMinute;
+RTC_DATA_ATTR uint8_t WatchFacePages::Weather::m_noonHour;
+RTC_DATA_ATTR uint8_t WatchFacePages::Weather::m_noonMinute;
+RTC_DATA_ATTR uint8_t WatchFacePages::Weather::m_sunsetHour;
+RTC_DATA_ATTR uint8_t WatchFacePages::Weather::m_sunsetMinute;
+RTC_DATA_ATTR double WatchFacePages::Weather::m_moonPhase;
+RTC_DATA_ATTR uint8_t WatchFacePages::Weather::m_moonBitmap[8 * 64];
+
+RTC_DATA_ATTR double WatchFacePages::Weather::m_currentTemperature;
+RTC_DATA_ATTR float WatchFacePages::Weather::m_currentWindSpeed;
+RTC_DATA_ATTR uint8_t WatchFacePages::Weather::m_currentHumidity;
+RTC_DATA_ATTR char WatchFacePages::Weather::m_currentWeatherCondition[4];
+
+WatchFacePages::Weather::Weather(WatchyDisplay & display, WatchFeatures::WatchFeatures & features)
+  : m_display(display), m_features(features)
+{
+}
+
+void WatchFacePages::Weather::InitBoot()
+{
+  memcpy(m_locationCity, DEFAULT_CITY_NAME, sizeof(DEFAULT_CITY_NAME));
+}
+
+void WatchFacePages::Weather::InitWake()
+{
+}
+
+void WatchFacePages::Weather::DrawPage(bool partialRefresh)
+{
+  Resync();
+  Recalc();
+
+  m_display.setFullWindow();
+  m_display.fillScreen(GxEPD_WHITE);
+  m_display.setTextColor(GxEPD_BLACK);
+
+  bool weatherOutdated = false;
+
+  // If it hasn't synced in 24 hours, assume weather is outdated
+  if (m_lastSyncTime == 0 || m_features.rtc.GetTimestamp() - m_lastSyncTime > 86400) {
+    weatherOutdated = true;
+  }
+
+  // City name and icon
+  m_display.setFont(&FreeSans9pt7b);
+  int16_t x, y;
+  uint16_t w, h;
+  
+  m_display.drawBitmap(5, 5, Icons::city, 29, 23, GxEPD_BLACK);
+  m_display.setCursor(39, 22);
+  m_display.print(m_locationCity);
+  // Separator
+  m_display.fillRect(10, 35, DISPLAY_WIDTH - 20, 2, GxEPD_BLACK);
+
+  // Moon
+  m_display.drawBitmap(200 - 64 - 10, 45, m_moonBitmap, 64, 64, GxEPD_BLACK);
+  m_display.drawCircle(200 - 64 - 10 + 32, 45 + 32, 32, GxEPD_BLACK);
+
+  // Sunrise, solar noon and sunset
+  m_display.drawBitmap(10, 38, Icons::Weather::sunrise, 30, 30, GxEPD_BLACK);
+  std::ostringstream sunrise;
+  sunrise << std::setfill('0') << std::setw(2) << (int)m_sunriseHour << ":" << std::setw(2) << (int)m_sunriseMinute;
+  m_display.setFont(&FreeSans9pt7b);
+  m_display.setCursor(45, 56);
+  m_display.setTextColor(GxEPD_BLACK);
+  m_display.print(sunrise.str().c_str());
+
+  m_display.drawBitmap(10, 62, Icons::Weather::noon, 30, 30, GxEPD_BLACK);
+  std::ostringstream noon;
+  noon << std::setfill('0') << std::setw(2) << (int)m_noonHour << ":" << std::setw(2) << (int)m_noonMinute;
+  m_display.setCursor(45, 80);
+  m_display.print(noon.str().c_str());
+
+  m_display.drawBitmap(10, 87, Icons::Weather::sunset, 30, 30, GxEPD_BLACK);
+  std::ostringstream sunset;
+  sunset << std::setfill('0') << std::setw(2) << (int)m_sunsetHour << ":" << std::setw(2) << (int)m_sunsetMinute;
+  m_display.setFont(&FreeSans9pt7b);
+  m_display.setCursor(45, 106);
+  m_display.print(sunset.str().c_str());
+
+  // Temperature and weather icon
+  // Separator
+  m_display.fillRect(10, 116, DISPLAY_WIDTH - 20, 2, GxEPD_BLACK);
+
+  if (weatherOutdated) {
+    m_display.setFont(&FreeSans9pt7b);
+    m_display.getTextBounds("No Weather Data", 0, 0, &x, &y, &w, &h);
+    m_display.setCursor(DISPLAY_WIDTH / 2 - w / 2, 162);
+    m_display.print("No Weather Data");
+  } else {
+    // Unknown, Cloudy, Fog, Heavy Rain, Heavy Showers, Heavy Snow, Heavy Snow Showers, Light Rain, Light Showers, Light Sleet, Light Sleet Showers, Light Snow, Light Snow Showers, Partly Cloudy, Sunny, Thundery Heavy Rain, Thundery Showers, Thundery Snow Showers, Very Cloudy
+    std::vector<std::string> iconLookupCondition = {"?", "mm", "=", "///", "//", "**", "/*/", "/", ".", "x", "x/", "*", "*/", "m", "o", "/!/", "!/", "*!*", "mmm"};
+
+    std::string iconName = m_currentWeatherCondition;
+    int iconNum = 0;
+    for (int i = 0; i < iconLookupCondition.size(); i++) {
+      if (iconName == iconLookupCondition[i]) {
+        iconNum = i;
+        break;
+      }
+    }
+
+    // Get current time to see if it's day or night
+    tmElements_t currentTime;
+    m_features.rtc.Get(currentTime);
+    m_features.rtc.OffsetTime(currentTime, m_features.storage.GetTzOffset());
+
+    const unsigned char * iconBitmap = nullptr;
+    if (currentTime.Hour >= m_sunriseHour && currentTime.Hour < m_sunsetHour) {
+      const std::vector<const unsigned char * PROGMEM> dayIconLookupBitmap = {
+        Icons::Weather::alien,
+        Icons::Weather::day_cloudy,
+        Icons::Weather::day_fog,
+        Icons::Weather::day_rain_wind,
+        Icons::Weather::day_rain_mix,
+        Icons::Weather::day_snow,
+        Icons::Weather::day_snow_wind,
+        Icons::Weather::day_rain,
+        Icons::Weather::day_showers,
+        Icons::Weather::day_sleet,
+        Icons::Weather::day_sleet,
+        Icons::Weather::day_snow,
+        Icons::Weather::day_snow,
+        Icons::Weather::day_cloudy,
+        Icons::Weather::day_sunny,
+        Icons::Weather::day_thunderstorm,
+        Icons::Weather::day_thunderstorm,
+        Icons::Weather::day_snow_thunderstorm,
+        Icons::Weather::cloudy
+      };
+
+      iconBitmap = dayIconLookupBitmap[iconNum];
+    } else {
+      const std::vector<const unsigned char * PROGMEM> nightIconLookupBitmap = {
+        Icons::Weather::alien,
+        Icons::Weather::night_cloudy,
+        Icons::Weather::night_fog,
+        Icons::Weather::night_rain_wind,
+        Icons::Weather::night_rain_mix,
+        Icons::Weather::night_snow,
+        Icons::Weather::night_snow_wind,
+        Icons::Weather::night_rain,
+        Icons::Weather::night_showers,
+        Icons::Weather::night_sleet,
+        Icons::Weather::night_sleet,
+        Icons::Weather::night_snow,
+        Icons::Weather::night_snow,
+        Icons::Weather::night_cloudy,
+        Icons::Weather::night_clear,
+        Icons::Weather::night_thunderstorm,
+        Icons::Weather::night_thunderstorm,
+        Icons::Weather::night_snow_thunderstorm,
+        Icons::Weather::cloudy
+      };
+
+      iconBitmap = nightIconLookupBitmap[iconNum];
+    }
+
+    m_display.drawBitmap(5, 125, iconBitmap, 75, 75, GxEPD_BLACK);
+    m_display.setFont(&FreeSans12pt7b);
+
+    std::ostringstream temperature;
+    temperature << (int)m_currentTemperature << "  C";
+
+    m_display.getTextBounds(temperature.str().c_str(), 0, 0, &x, &y, &w, &h);
+    m_display.setCursor(190 - w, 142);
+    m_display.print(temperature.str().c_str());
+    // Hacky degree symbol
+    m_display.fillCircle(190 - 23, 129, 3, GxEPD_BLACK);
+    m_display.fillCircle(190 - 23, 129, 1, GxEPD_WHITE);
+
+    // Wind speed
+    m_display.drawBitmap(165, 145, Icons::Weather::wind, 30, 30, GxEPD_BLACK);
+    std::ostringstream windSpeed;
+    windSpeed << std::fixed << std::setprecision(1) << m_currentWindSpeed << " m/s";
+
+    m_display.setFont(&FreeSans9pt7b);
+    m_display.getTextBounds(windSpeed.str().c_str(), 0, 0, &x, &y, &w, &h);
+    m_display.setCursor(160 - w, 165);
+    m_display.print(windSpeed.str().c_str());
+
+    // Humidity
+    m_display.drawBitmap(165, 170, Icons::Weather::humidity, 30, 30, GxEPD_BLACK);
+    std::ostringstream humidity;
+    humidity << (int)m_currentHumidity;
+    m_display.getTextBounds(humidity.str().c_str(), 0, 0, &x, &y, &w, &h);
+    m_display.setCursor(160 - w, 190);
+    m_display.print(humidity.str().c_str());
+  }
+
+  m_display.display(partialRefresh);
+}
+
+void WatchFacePages::Weather::Resync()
+{
+  uint64_t currentTime = m_features.rtc.GetTimestamp();
+
+  if(m_lastSyncTime > 0 && currentTime - m_lastSyncTime < WEATHER_UPDATE_INTERVAL) {
+    return;
+  }
+
+  if (m_lastSyncTime > 0 && currentTime - m_lastSyncAttemptTime < WEATHER_UPDATE_BACKOFF) {
+    return;
+  }
+
+  if(!m_features.wifi.Connect()) {
+    m_lastSyncAttemptTime = currentTime;
+    return;
+  }
+
+  HTTPClient client;
+  client.setConnectTimeout(3000); // 3 second max timeout
+
+  // Get geolocation from IP
+  if (DO_GEOLOCATION) {
+    client.begin("http://ip-api.com/line/");
+    int httpCode = client.GET();
+    if (httpCode != 200) {
+      m_features.wifi.Disconnect();
+      m_lastSyncAttemptTime = currentTime;
+      return;
+    }
+
+    String payload = client.getString();
+    client.end();
+    std::string reponse(payload.c_str());
+
+    // Split into lines
+    std::vector<std::string> lines;
+    std::string::size_type pos = 0;
+    std::string::size_type prev = 0;
+    char delimiter = '\n';
+    while ((pos = reponse.find(delimiter, prev)) != std::string::npos) {
+      lines.push_back(reponse.substr(prev, pos - prev));
+      prev = pos + 1;
+    }
+
+    // Check if we got enough lines
+    if (lines.size() < 14) {
+      m_features.wifi.Disconnect();
+      m_lastSyncAttemptTime = currentTime;
+      return;
+    }
+
+    std::string location = lines[5];
+    location = location.substr(0, 127);
+    m_locationCity[location.length()] = '\0';
+    memcpy(m_locationCity, location.c_str(), location.length());
+    m_locationLat = std::stof(lines[7]);
+    m_locationLon = std::stof(lines[8]);
+
+    // Force recalculation next time
+    m_lastCalculatedDay = 0xFFFFFFFF;
+  }
+  
+  std::ostringstream url;
+  url << "http://wttr.in/" << m_locationLat << "," << m_locationLon << "?0Q&format=%x:%t:%h:%w";
+  // Grr. wttr.in does a redirect to HTTPS if your agent isn't curl
+  client.setUserAgent("curl/8.0.1");
+
+  client.begin(url.str().c_str());
+  int httpCode = client.GET();
+  m_features.wifi.Disconnect();
+  if (httpCode != 200) {
+    m_lastSyncAttemptTime = currentTime;
+    return;
+  }
+
+  String payload = client.getString();
+  client.end();
+  std::string reponse(payload.c_str());
+  // Split on :
+  std::vector<std::string> parts;
+  std::string::size_type pos = 0;
+  std::string::size_type prev = 0;
+  char delimiter = ':';
+  while ((pos = reponse.find(delimiter, prev)) != std::string::npos) {
+    parts.push_back(reponse.substr(prev, pos - prev));
+    prev = pos + 1;
+  }
+
+  parts.push_back(reponse.substr(prev));
+
+  if (parts.size() != 4) {
+    m_lastSyncAttemptTime = currentTime;
+    return;
+  }
+
+  memcpy(m_currentWeatherCondition, parts[0].c_str(), parts[0].length());
+
+  std::string temperature = parts[2].substr(0, parts[2].length() - 2);
+  m_currentTemperature = std::stoi(temperature);
+
+  std::string humidity = parts[2].substr(0, parts[2].length() - 1);
+  m_currentHumidity = std::stoi(humidity);
+
+  std::string windSpeed = parts[3].substr(3, parts[3].length() - 7);
+  float windSpeedKmh = std::stof(windSpeed);
+  
+  // Convert to m/s
+  m_currentWindSpeed = std::round(windSpeedKmh * 0.277778);
+
+  m_features.wifi.Disconnect();
+
+  m_lastSyncTime = currentTime;
+}
+
+void WatchFacePages::Weather::Recalc()
+{
+  tmElements_t tm;
+  m_features.rtc.Get(tm);
+
+  if (m_lastCalculatedDay == tm.Day) {
+    return;
+  }
+
+  unsigned int dayOfYear = m_features.rtc.GetDayOfYear(tm);
+  double denominator = tm.Year / 4 ? 366.0 : 365.0;
+  double fractionalYear = (2.0 * M_PI / denominator) * (dayOfYear - 1 + ((0 - 12.0) / 24.0));
+
+  double eqtime = 229.18 * (0.000075 + 0.001868 * cos(fractionalYear) - 0.032077 * sin(fractionalYear) - 0.014615 * cos(2.0 * fractionalYear) - 0.040849 * sin(2.0 * fractionalYear));
+  double declination = 0.006918 - 0.399912 * cos(fractionalYear) + 0.070257 * sin(fractionalYear) - 0.006758 * cos(2.0 * fractionalYear) + 0.000907 * sin(2.0 * fractionalYear) - 0.002697 * cos(3.0 * fractionalYear) + 0.00148 * sin(3.0 * fractionalYear);
+
+  const double latitudeRadians = (double)m_locationLat * M_PI / 180.0;
+  const double longitudeRadians = (double)m_locationLon * M_PI / 180.0;
+  const double sunriseSunsetAngle = 1.5853349200000815;
+
+  double timeOffset = eqtime + 4.0 * (double)m_locationLon - 60.0;
+  double trueSolarTime = tm.Hour * 60.0 + tm.Minute + tm.Second / 60.0 + timeOffset;
+  double hourAngle = acos(cos(sunriseSunsetAngle) / (cos(latitudeRadians) * cos(declination)) - tan(latitudeRadians) * tan(declination));
+  hourAngle = hourAngle * 180.0 / M_PI;
+  double sunrise = 720 - 4.0 * ((double)m_locationLon + hourAngle) - eqtime;
+  double sunset = 720 - 4.0 * ((double)m_locationLon - hourAngle) - eqtime;
+  double noon = 720 - 4.0 * ((double)m_locationLon) - eqtime;
+
+  sunrise += m_features.storage.GetTzOffset() / 60;
+  sunset += m_features.storage.GetTzOffset() / 60;
+  noon += m_features.storage.GetTzOffset() / 60;
+
+  m_sunriseHour = sunrise / 60;
+  m_sunriseMinute = sunrise - m_sunriseHour * 60;  
+  m_sunsetHour = sunset / 60;
+  m_sunsetMinute = sunset - m_sunsetHour * 60;
+  m_noonHour = noon / 60;
+  m_noonMinute = noon - m_noonHour * 60;
+
+  tmElements_t newMoon;
+  newMoon.Year = 2023 - 1970;
+  newMoon.Month = 5;
+  newMoon.Day = 19;
+
+  unsigned int daysDifference = m_features.rtc.DaysDifference(newMoon, tm);
+  m_moonPhase = fmod((double)daysDifference, 29.530588853) / 29.530588853;
+
+  // Draw a 1-bit bitmap with the moon phase
+  bool pixels[64 * 64];
+  for (int i = 0; i < 64 * 64; i++) {
+    pixels[i] = false;
+  }
+
+  for (int x = 0; x < 64; x++) {
+    for (int y = 0; y < 64; y++) {
+      float distance = sqrt(powf(fabsf(x - 32), 2) + powf(fabsf(y - 32), 2));
+      if (distance < 32) {
+        float inclination = asinf(((float)y - 32.0f) / 32.0f);
+        float azimuth = acosf((float)(x - 32) / (-32.0f * cosf(inclination)));
+
+        azimuth += M_PI;
+
+        azimuth += (m_moonPhase) * M_PI * 2.0f;
+        while (azimuth > M_PI * 2.0f) {
+          azimuth -= M_PI * 2.0f;
+        }
+
+        while (azimuth < 0) {
+          azimuth += M_PI * 2.0f;
+        }
+
+        if (azimuth > M_PI) {
+          pixels[x + y * 64] = true;
+        }
+      } else {
+        pixels[x + y * 64] = false;
+      }
+    }
+  }
+
+  // Needs to be split into two parts because pio does too aggressive optimisation
+  for (unsigned int y = 0; y < 32; y++) {
+    for (unsigned int x = 0; x < 8; x++) {
+      uint8_t value = 0;
+      for (unsigned int i = 0; i < 8; i++) {
+        value |= pixels[(x * 8 + i) + (y * 64)] << (7 - i);
+      }
+
+      m_moonBitmap[x + y * 8] = value;
+    }
+  }
+
+  for (unsigned int y = 32; y < 64; y++) {
+    for (unsigned int x = 0; x < 8; x++) {
+      uint8_t value = 0;
+      for (unsigned int i = 0; i < 8; i++) {
+        value |= pixels[(x * 8 + i) + (y * 64)] << (7 - i);
+      }
+
+      m_moonBitmap[x + y * 8] = value;
+    }
+  }
+
+  m_lastCalculatedDay = tm.Day;
+}

src/WatchFacePages/Weather.h

@@ -0,0 +1,48 @@
+#pragma once
+
+#pragma once
+
+#include "Page.h"
+#include "../WatchyDisplay.h"
+#include "../WatchFeatures/WatchFeatures.h"
+#include <string>
+
+namespace WatchFacePages
+{
+  class Weather;
+}
+
+class WatchFacePages::Weather : public WatchFacePages::Page
+{
+public:
+  Weather(WatchyDisplay & display, WatchFeatures::WatchFeatures & features);
+  void InitBoot() override;
+  void InitWake() override;
+  void DrawPage(bool partialRefresh = false) override;
+  void Resync();
+
+private:
+  void Recalc(); // Offline daily ephemeris like sunrise/sunset
+
+  WatchyDisplay & m_display;
+  WatchFeatures::WatchFeatures & m_features;
+  static RTC_DATA_ATTR uint64_t m_lastSyncTime;
+  static RTC_DATA_ATTR uint64_t m_lastSyncAttemptTime;
+  static RTC_DATA_ATTR int m_lastCalculatedDay;
+  static RTC_DATA_ATTR char m_locationCity[128];
+  static RTC_DATA_ATTR double m_locationLat, m_locationLon;
+
+  static RTC_DATA_ATTR uint8_t m_sunriseHour;
+  static RTC_DATA_ATTR uint8_t m_sunriseMinute;
+  static RTC_DATA_ATTR uint8_t m_noonHour;
+  static RTC_DATA_ATTR uint8_t m_noonMinute;
+  static RTC_DATA_ATTR uint8_t m_sunsetHour;
+  static RTC_DATA_ATTR uint8_t m_sunsetMinute;
+  static RTC_DATA_ATTR double m_moonPhase;
+  static RTC_DATA_ATTR uint8_t m_moonBitmap[8 * 64];
+
+  static RTC_DATA_ATTR double m_currentTemperature;
+  static RTC_DATA_ATTR float m_currentWindSpeed;
+  static RTC_DATA_ATTR uint8_t m_currentHumidity;
+  static RTC_DATA_ATTR char m_currentWeatherCondition[4];
+};

src/WatchFeatures/Battery.cpp

@@ -0,0 +1,40 @@
+#include "../config.h"
+#include "Battery.h"
+#include <Wire.h>
+#include <Arduino.h>
+#include <limits>
+
+float WatchFeatures::Battery::m_previousVoltage = std::numeric_limits<float>::infinity();
+
+WatchFeatures::Battery::Battery()
+{
+}
+
+float WatchFeatures::Battery::GetVoltage()
+{
+  float voltage = analogReadMilliVolts(BATT_ADC_PIN) / 1000.0f * 2.0f;
+
+  if (m_previousVoltage == std::numeric_limits<float>::infinity()) {
+    m_previousVoltage = voltage;
+  }
+
+  float averageVoltage = (m_previousVoltage + voltage) / 2.0f;
+  m_previousVoltage = voltage;
+  return averageVoltage;
+}
+
+uint8_t WatchFeatures::Battery::GetPercentage()
+{
+  float voltage = GetVoltage();
+
+  float level = (GetVoltage() - 3.6f) / 0.6f;
+  if (level < 0.0f) {
+    level = 0.0f;
+  } else if (level > 1.0f) {
+    level = 1.0f;
+  }
+
+  level = level * level * (3.0f - 2.0f * level);
+
+  return std::round(level * 100.0f);
+}

src/WatchFeatures/Battery.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <stdint.h>
+
+namespace WatchFeatures
+{
+  class Battery;
+}
+
+class WatchFeatures::Battery
+{
+public:
+  Battery();
+  float GetVoltage();
+  uint8_t GetPercentage();
+
+private:
+  static float m_previousVoltage;
+};

src/WatchFeatures/RTC.cpp

@@ -1,49 +1,46 @@
-#include "WatchyRTC.h"
+#include "RTC.h"
+#include <EEPROM.h>
 
 #if (UPDATE_INTERVAL > 255)
 #error "UPDATE_INTERVAL must be either a multiple of 60, or less than 256 seconds"
 #endif
 
-RTC_DATA_ATTR bool WatchyRTC::m_timerSet = false;
+RTC_DATA_ATTR bool WatchFeatures::RTC::m_timerSet = false;
-RTC_DATA_ATTR bool WatchyRTC::m_initialTimer = true;
+RTC_DATA_ATTR bool WatchFeatures::RTC::m_initialTimer = true;
 
-WatchyRTC::WatchyRTC()
+void WatchFeatures::RTC::Get(tmElements_t & tm)
 {
+  m_rtcPcf.getDateTime();
+  tm.Year = y2kYearToTm(m_rtcPcf.getYear());
+  tm.Month = m_rtcPcf.getMonth();
+  tm.Day = m_rtcPcf.getDay();
+  tm.Wday = m_rtcPcf.getWeekday() + 1; // TimeLib has Wday range of 1-7, but PCF8563 stores day of week in 0-6 range
+  tm.Hour = m_rtcPcf.getHour();
+  tm.Minute = m_rtcPcf.getMinute();
+  tm.Second = m_rtcPcf.getSecond();
 }
 
-void WatchyRTC::Init()
+void WatchFeatures::RTC::Set(tmElements_t tm)
-{
-}
-
-void WatchyRTC::Get(tmElements_t & tm, int offsetInSeconds)
-{
-  rtc_pcf.getDateTime();
-  tm.Year = y2kYearToTm(rtc_pcf.getYear());
-  tm.Month = rtc_pcf.getMonth();
-  tm.Day = rtc_pcf.getDay();
-  tm.Wday = rtc_pcf.getWeekday() + 1; // TimeLib has Wday range of 1-7, but PCF8563 stores day of week in 0-6 range
-  tm.Hour = rtc_pcf.getHour();
-  tm.Minute = rtc_pcf.getMinute();
-  tm.Second = rtc_pcf.getSecond();
-  OffsetTime(tm, offsetInSeconds);
-}
-
-void WatchyRTC::Set(tmElements_t tm)
 {
   time_t t = makeTime(tm); // make and break to calculate tm.Wday
   breakTime(t, tm);
   // day, weekday, month, century(1=1900, 0=2000), year(0-99)
-  rtc_pcf.setDateTime(tm.Day, tm.Wday - 1, tm.Month, 0, tmYearToY2k(tm.Year), tm.Hour, tm.Minute, tm.Second);
+  m_rtcPcf.setDateTime(tm.Day, tm.Wday - 1, tm.Month, 0, tmYearToY2k(tm.Year), tm.Hour, tm.Minute, tm.Second);
 }
 
-void WatchyRTC::SetTimer()
+uint64_t WatchFeatures::RTC::GetTimestamp()
+{
+  return m_rtcPcf.getTimestamp64();
+}
+
+void WatchFeatures::RTC::SetTimer()
 {
   if (!m_timerSet) {
     Resync();
   }
 }
 
-void WatchyRTC::OffsetTime(tmElements_t & tm, int offsetInSeconds)
+void WatchFeatures::RTC::OffsetTime(tmElements_t & tm, int offsetInSeconds)
 {
   int year = tm.Year;
   int month = tm.Month;
@@ -105,10 +102,55 @@ void WatchyRTC::OffsetTime(tmElements_t & tm, int offsetInSeconds)
   tm.Hour = hour;
   tm.Minute = minute;
   tm.Second = second;
+  time_t t = makeTime(tm); // make and break to calculate tm.Wday
+  breakTime(t, tm);
 }
 
+unsigned int WatchFeatures::RTC::GetDayOfYear(tmElements_t & tm)
+{
+  unsigned int dayOfYear = 1;
+  for (int i = 1; i < tm.Month; i++) {
+    switch (i) {
+      case 2:
+        dayOfYear += (tm.Year % 4 == 0) ? 29 : 28;
+        break;
+      case 4:
+      case 6:
+      case 9:
+      case 11:
+        dayOfYear += 30;
+        break;
+      default:
+        dayOfYear += 31;
+        break;
+    }
+  }
+
+  dayOfYear += tm.Day;
+  return dayOfYear;
+}
+
+unsigned int WatchFeatures::RTC::DaysDifference(tmElements_t & tm1, tmElements_t & tm2)
+{
+  unsigned int dayOfYear1 = GetDayOfYear(tm1);
+  unsigned int dayOfYear2 = GetDayOfYear(tm2);
+  unsigned int days = 0;
+
+  if (tm1.Year == tm2.Year) {
+    days = dayOfYear2 - dayOfYear1;
+  } else {
+    days = 365 - dayOfYear1 + dayOfYear2;
+    for (int i = tm1.Year + 1; i < tm2.Year; i++) {
+      days += (i % 4 == 0) ? 366 : 365;
+    }
+  }
+
+  return days;
+}
+
+
 // TODO: implement more advanced wakeup logic, i.e. > 255 seconds that are not a multiple of 60
-bool WatchyRTC::CheckWakeup()
+bool WatchFeatures::RTC::CheckWakeup()
 {
   if(m_initialTimer) {
     m_initialTimer = false;
@@ -123,8 +165,8 @@ bool WatchyRTC::CheckWakeup()
     }
 
     // Timer doesn't work reliably unless it's cleared first
-    rtc_pcf.clearTimer();
+    m_rtcPcf.clearTimer();
-    rtc_pcf.setTimer(interval, frequency, true);
+    m_rtcPcf.setTimer(interval, frequency, true);
 
     return true;
   }
@@ -132,18 +174,23 @@ bool WatchyRTC::CheckWakeup()
   return true;
 }
 
-void WatchyRTC::Resync()
+std::string WatchFeatures::RTC::GetDateString()
 {
-  rtc_pcf.getDateTime();
+  return std::string(m_rtcPcf.formatDate(RTCC_DATE_ISO8601));
+}
+
+void WatchFeatures::RTC::Resync()
+{
+  m_rtcPcf.getDateTime();
   // Sleep just long enough to get to a multiple of the update interval, makes updates happen on exact turn of the minute
-  int seconds = UPDATE_INTERVAL - (rtc_pcf.getSecond() % UPDATE_INTERVAL);
+  int seconds = UPDATE_INTERVAL - (m_rtcPcf.getSecond() % UPDATE_INTERVAL);
 
   if (seconds < 0) {
     seconds = 0;
   }
 
   // Timer doesn't work reliably unless it's cleared first
-  rtc_pcf.clearTimer();
+  m_rtcPcf.clearTimer();
 
   if (seconds == 0) {
     // If there's no time to wait, just call CheckWakeup() immediately and it'll set the repeating timer
@@ -151,7 +198,7 @@ void WatchyRTC::Resync()
     m_initialTimer = true;
     CheckWakeup();
   } else {
-    rtc_pcf.setTimer(seconds, TMR_1Hz, false);
+    m_rtcPcf.setTimer(seconds, TMR_1Hz, false);
 
     m_timerSet = true;
     m_initialTimer = true;

src/WatchFeatures/RTC.h

@@ -6,25 +6,27 @@
 #include <TimeLib.h>
 #include <Rtc_Pcf8563.h>
 
-#define RTC_PCF_ADDR    0x51
+namespace WatchFeatures
-#define YEAR_OFFSET_PCF 2000
+{
+  class RTC;
+}
 
-class WatchyRTC {
+class WatchFeatures::RTC {
 public:
-  Rtc_Pcf8563 rtc_pcf;
+  void Get(tmElements_t & tm);
-
-public:
-  WatchyRTC();
-  void Init();
-  void Get(tmElements_t & tm, int offsetInSeconds = 0);
   void Set(tmElements_t tm);
+  uint64_t GetTimestamp();
+  std::string GetDateString();
   void SetTimer();
   bool CheckWakeup(); // Checks to really wake up or not, also resets the timer after the initial sleep
   void Resync(); // Resync the timer cycle, both initially and after RTC resync
 
   static void OffsetTime(tmElements_t & tm, int offsetInSeconds);
+  static unsigned int GetDayOfYear(tmElements_t & tm);
+  static unsigned int DaysDifference(tmElements_t & tm1, tmElements_t & tm2);
 
 private:
+  Rtc_Pcf8563 m_rtcPcf;
   static RTC_DATA_ATTR bool m_timerSet, m_initialTimer;
 };
 

src/WatchFeatures/StepCounter.cpp

@@ -0,0 +1,16 @@
+#include "StepCounter.h"
+
+WatchFeatures::StepCounter::StepCounter(BMA423 & sensor) :
+  m_sensor(sensor)
+{
+}
+
+uint64_t WatchFeatures::StepCounter::GetSteps()
+{
+  return m_sensor.getCounter();
+}
+
+void WatchFeatures::StepCounter::ResetSteps()
+{
+  m_sensor.resetStepCounter();
+}

src/WatchFeatures/StepCounter.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <stdint.h>
+#include "../bma.h"
+
+namespace WatchFeatures
+{
+  class StepCounter;
+}
+
+class WatchFeatures::StepCounter
+{
+public:
+  StepCounter(BMA423 & sensor);
+  uint64_t GetSteps();
+  void ResetSteps();
+
+private:
+  BMA423 & m_sensor;
+};

src/WatchFeatures/Storage.cpp

@@ -0,0 +1,58 @@
+#include "../config.h"
+#include "Storage.h"
+#include <EEPROM.h>
+
+WatchFeatures::Storage::Storage()
+{
+
+}
+
+void WatchFeatures::Storage::InitBoot()
+{
+  EEPROM.begin(512);
+  if (EEPROM.read(EEPROM_LOCATION_MAGIC) != EEPROM_MAGIC1
+      || EEPROM.read(EEPROM_LOCATION_MAGIC + 1) != EEPROM_MAGIC2)
+  {
+    Serial.println("Initializing EEPROM");
+    EEPROM.write(EEPROM_LOCATION_MAGIC, EEPROM_MAGIC1);
+    EEPROM.write(EEPROM_LOCATION_MAGIC + 1, EEPROM_MAGIC2);
+    uint16_t version = EEPROM_VERSION;
+    EEPROM.write(EEPROM_LOCATION_VERSION, version & 0xFF);
+    EEPROM.write(EEPROM_LOCATION_VERSION + 1, version >> 8);
+
+    int offset = DEFAULT_TZ_OFFSET;
+    EEPROM.write(EEPROM_LOCATION_TZ_OFFSET, offset & 0xFF);
+    EEPROM.write(EEPROM_LOCATION_TZ_OFFSET + 1, (offset >> 8) & 0xFF);
+    EEPROM.write(EEPROM_LOCATION_TZ_OFFSET + 2, (offset >> 16) & 0xFF);
+    EEPROM.write(EEPROM_LOCATION_TZ_OFFSET + 3, (offset >> 24) & 0xFF);
+    EEPROM.commit();
+  }
+
+  uint16_t version = EEPROM.read(EEPROM_LOCATION_VERSION) | (EEPROM.read(EEPROM_LOCATION_VERSION + 1) << 8);
+  if (version != EEPROM_VERSION)
+  {
+    // TODO: Handle version mismatch
+  }
+}
+
+void WatchFeatures::Storage::InitWake()
+{
+  EEPROM.begin(512);
+}
+
+int32_t WatchFeatures::Storage::GetTzOffset()
+{
+  return EEPROM.read(EEPROM_LOCATION_TZ_OFFSET)
+    | (EEPROM.read(EEPROM_LOCATION_TZ_OFFSET + 1) << 8)
+    | (EEPROM.read(EEPROM_LOCATION_TZ_OFFSET + 2) << 16)
+    | (EEPROM.read(EEPROM_LOCATION_TZ_OFFSET + 3) << 24);
+}
+
+void WatchFeatures::Storage::SetTzOffset(int offset)
+{
+  EEPROM.write(EEPROM_LOCATION_TZ_OFFSET, offset & 0xFF);
+  EEPROM.write(EEPROM_LOCATION_TZ_OFFSET + 1, (offset >> 8) & 0xFF);
+  EEPROM.write(EEPROM_LOCATION_TZ_OFFSET + 2, (offset >> 16) & 0xFF);
+  EEPROM.write(EEPROM_LOCATION_TZ_OFFSET + 3, (offset >> 24) & 0xFF);
+  EEPROM.commit();
+}

src/WatchFeatures/Storage.h

@@ -0,0 +1,16 @@
+#pragma once
+
+namespace WatchFeatures
+{
+  class Storage;
+}
+
+class WatchFeatures::Storage
+{
+public:
+  Storage();
+  void InitBoot();
+  void InitWake();
+  int GetTzOffset();
+  void SetTzOffset(int offset);
+};

src/WatchFeatures/WatchFeatures.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include "Battery.h"
+#include "StepCounter.h"
+#include "RTC.h"
+#include "Storage.h"
+#include "Wifi.h"
+
+namespace WatchFeatures
+{
+  struct WatchFeatures;
+}
+
+struct WatchFeatures::WatchFeatures
+{
+  WatchFeatures(BMA423 & sensor)
+    : battery(), stepCounter(sensor), rtc()
+  {
+  }
+
+  Battery battery;
+  StepCounter stepCounter;
+  RTC rtc;
+  Storage storage;
+  Wifi wifi;
+};

src/WatchFeatures/Wifi.cpp

@@ -0,0 +1,28 @@
+#include <WiFi.h>
+#include "Wifi.h"
+#include "config.h"
+
+bool WatchFeatures::Wifi::Connect()
+{
+  if (WiFi.begin(WIFI_SSID, WIFI_PASS) == WL_CONNECT_FAILED) {
+    WiFi.mode(WIFI_OFF);
+    return false;
+  }
+
+  if (WiFi.waitForConnectResult() != WL_CONNECTED) {
+    WiFi.mode(WIFI_OFF);
+    return false;
+  }
+
+  return true;
+}
+
+void WatchFeatures::Wifi::Disconnect()
+{
+
+}
+
+bool WatchFeatures::Wifi::IsConnected()
+{
+  return true;
+}

src/WatchFeatures/Wifi.h

@@ -0,0 +1,12 @@
+#pragma once
+
+namespace WatchFeatures
+{
+  class Wifi
+  {
+  public:
+    bool Connect();
+    void Disconnect();
+    bool IsConnected();
+  };
+}

src/Watchy.cpp

@@ -3,44 +3,41 @@
 
 WatchyDisplayBase Watchy::m_displayBase;
 WatchyDisplay Watchy::m_display(Watchy::m_displayBase);
-WatchyRTC Watchy::m_RTC;
 
 RTC_DATA_ATTR BMA423 Watchy::m_sensor;
 RTC_DATA_ATTR bool g_displayFullInit = true;
 
 Watchy::Watchy()
+  : m_features(m_sensor)
 {
 }
 
-void Watchy::Init()
+void Watchy::Wake()
 {
   esp_sleep_wakeup_cause_t wakeup_reason;
   wakeup_reason = esp_sleep_get_wakeup_cause();
 
   if (wakeup_reason == ESP_SLEEP_WAKEUP_EXT0) {
-    if(!m_RTC.CheckWakeup()) {
+    if(!m_features.rtc.CheckWakeup()) {
       DeepSleep();
     }
   }
 
-  Wire.begin(SDA, SCL);
-  m_display.epd2.selectSPI(SPI, SPISettings(20000000, MSBFIRST, SPI_MODE0));
-  m_display.init(0, g_displayFullInit, 10, true);
-  SetBusyCallback();
-
-  Setup();
-
   switch(wakeup_reason) {
     case ESP_SLEEP_WAKEUP_EXT0:
     {
       // RTC interrupt
+      InitWakeInternal();
       ShowWatchFace(true);
       break;
     }
     case ESP_SLEEP_WAKEUP_EXT1:
     {
+      // Button press or accelerometer interrupt
+      InitWakeInternal();
       uint64_t wakeupBit = esp_sleep_get_ext1_wakeup_status();
       if (wakeupBit & ACC_INT_MASK) {
+        // Accelerometer interrupt
         m_sensor.getINT();
         uint8_t irqMask = m_sensor.getIRQMASK();
 
@@ -54,24 +51,14 @@ void Watchy::Init()
 
         m_sensor.getINT();
       } else if (wakeupBit & BTN_PIN_MASK) {
-
         // Button press
         HandleButtonPress(wakeupBit);
-        break;
       }
-
-      // Button press
-      HandleButtonPress(wakeupBit);
       break;
     }
     default:
     {
-      BmaConfig();
+      InitBootInternal();
-      m_RTC.Init();
-      ConnectWiFi();
-      SyncNTPTime();
-      DisconnectWiFi();
-
       ShowWatchFace(false);
       break;
     }
@@ -102,7 +89,7 @@ void Watchy::DeepSleep()
     BTN_PIN_MASK | ACC_INT_MASK,
     ESP_EXT1_WAKEUP_ANY_HIGH);
 
-  m_RTC.SetTimer();
+  m_features.rtc.SetTimer();
 
   esp_deep_sleep_start();
 }
@@ -125,58 +112,23 @@ void Watchy::VibeMotor(uint8_t intervalMs, uint8_t length)
   }
 }
 
-float Watchy::GetBatteryVoltage()
-{
-  return analogReadMilliVolts(BATT_ADC_PIN) / 1000.0f * 2.0f;
-}
-
-uint64_t Watchy::GetSteps()
-{
-  return m_sensor.getCounter();
-}
-
-void Watchy::ResetSteps()
-{
-  m_sensor.resetStepCounter();
-}
-
-void Watchy::ConnectWiFi()
-{
-  if(WiFi.begin(WIFI_SSID, WIFI_PASS) == WL_CONNECT_FAILED) {  
-    Serial.begin(9600);
-    Serial.println("Failed to connect to WiFi");
-    return;
-  }
-
-  if(WiFi.waitForConnectResult() != WL_CONNECTED) {
-    Serial.begin(9600);
-    Serial.println("Failed to connect to WiFi");
-    return;
-  }
-}
-
 void Watchy::SyncNTPTime()
 {
   WiFiUDP ntpUDP;
-  // GMT offset should be 0, RTC class will adjust to local time
+  // GMT offset should be 0, since RTC is set to UTC
   NTPClient timeClient(ntpUDP, NTP_SERVER, 0);
   timeClient.begin();
   bool success = timeClient.forceUpdate();
   if (success) {
     tmElements_t tm;
     breakTime((time_t)timeClient.getEpochTime(), tm);
-    m_RTC.Set(tm);
+    m_features.rtc.Set(tm);
   } else {
     Serial.begin(9600);
     Serial.println("Failed to get NTP time");
   }
 }
 
-void Watchy::DisconnectWiFi()
-{
-  WiFi.mode(WIFI_OFF);
-}
-
 void Watchy::ShowWatchFace(bool partialRefresh)
 {
   DrawWatchFace(partialRefresh);
@@ -187,6 +139,29 @@ void Watchy::ClearBusyCallback()
   m_display.epd2.setBusyCallback(nullptr);
 }
 
+void Watchy::InitBootInternal()
+{
+  Wire.begin(SDA, SCL);
+  m_display.epd2.selectSPI(SPI, SPISettings(20000000, MSBFIRST, SPI_MODE0));
+  m_display.init(0, g_displayFullInit, 10, true);
+  SetBusyCallback(); 
+
+  BmaConfig();
+  m_features.storage.InitBoot();
+  InitBoot();
+}
+
+void Watchy::InitWakeInternal()
+{
+  Wire.begin(SDA, SCL);
+  m_display.epd2.selectSPI(SPI, SPISettings(20000000, MSBFIRST, SPI_MODE0));
+  m_display.init(0, g_displayFullInit, 10, true);
+  SetBusyCallback(); 
+
+  m_features.storage.InitWake();
+  InitWake();
+}
+
 void Watchy::SetBusyCallback()
 {
   m_display.epd2.setBusyCallback(DisplayBusyCallback);
@@ -308,4 +283,5 @@ void Watchy::BmaConfig()
     m_sensor.enableTiltInterrupt();
     m_sensor.enableWakeupInterrupt();
   }
-}
+}
+

src/Watchy.h

@@ -2,7 +2,7 @@
 
 #include "config.h"
 #include "WatchyDisplay.h"
-#include "WatchyRTC.h"
+#include "WatchFeatures/WatchFeatures.h"
 #include <WiFi.h>
 #include <WiFiUdp.h>
 #include <NTPClient.h>
@@ -12,12 +12,10 @@ class Watchy
 {
 public:
   Watchy();
-  void Init();
+  void Wake();
   void DeepSleep();
   void VibeMotor(uint8_t intervalMs = 100, uint8_t length = 20);
   float GetBatteryVoltage();
-  uint64_t GetSteps();
-  void ResetSteps();
   void ConnectWiFi();
   void SyncNTPTime();
   void DisconnectWiFi();
@@ -26,9 +24,8 @@ public:
   void ClearBusyCallback();
   void SetBusyCallback();
 
-  // Called after hardware is setup
+  virtual void InitBoot() {}; // Called on first boot
-  virtual void Setup() = 0;
+  virtual void InitWake() {}; // Called every time the watch wakes from sleep
-
   virtual void HandleButtonPress(uint64_t buttonMask) = 0;
   virtual void HandleDoubleTap() {}
   virtual void HandleTilt() {}
@@ -36,13 +33,15 @@ public:
 
 
 protected:
+  void InitBootInternal();
+  void InitWakeInternal();
+
   static void DisplayBusyCallback(const void *);
 
   static WatchyDisplayBase m_displayBase;
   static WatchyDisplay m_display;
-  static WatchyRTC m_RTC;
-
   static RTC_DATA_ATTR BMA423 m_sensor;
+  WatchFeatures::WatchFeatures m_features;
 
 private:
   void BmaConfig();

src/config.h

@@ -13,6 +13,8 @@
 #define ACC_INT_2_PIN 12
 #define VIB_MOTOR_PIN 13
 #define RTC_INT_PIN 27
+#define RTC_PCF_ADDR 0x51
+#define YEAR_OFFSET_PCF 2000
 
 #define MENU_BTN_MASK GPIO_SEL_26
 #define BACK_BTN_MASK GPIO_SEL_25
@@ -24,11 +26,30 @@
 #define DISPLAY_WIDTH 200
 #define DISPLAY_HEIGHT 200
 
-#define WIFI_SSID "<ssid>"
+#define EEPROM_LOCATION_MAGIC 0
-#define WIFI_PASS "<pass>"
+#define EEPROM_LOCATION_VERSION 2
-#define TZ_OFFSET 3600 * 3
+#define EEPROM_LOCATION_TZ_OFFSET 4
+
+#define EEPROM_MAGIC1 0xf0
+#define EEPROM_MAGIC2 0x0d
+#define EEPROM_VERSION 1
+
+#define DEFAULT_TZ_OFFSET 3600 * 3
 
 #define NTP_SERVER "pool.ntp.org"
 
 #define UPDATE_INTERVAL 60 // seconds
-#define WAKE_ON_ACCEL_EVENTS false // useful if saving battery by not updating every minute
+#define WAKE_ON_ACCEL_EVENTS false // useful if saving battery by not updating every minute
+
+#define WEATHER_UPDATE_INTERVAL 3600 // seconds
+#define WEATHER_UPDATE_BACKOFF 900 // If weather update fails, how long to wait before trying again
+#define DO_GEOLOCATION true // if false then use defaults below
+
+#define DEFAULT_LATITUDE 60.170833
+#define DEFAULT_LONGITUDE 24.9375
+#define DEFAULT_CITY_NAME "Helsinki"
+
+#include "secrets.h"
+#if !defined(WIFI_SSID) || !defined(WIFI_PASS)
+#error "Please define WIFI_SSID and WIFI_PASS in secrets.h"
+#endif