Add an "About Watchy" menu item.

This replaces "Check Battery" and adds the following info:

  * Firmware version
  * RTC chip type

The firmware version is #defined in Watchy.h.  There might be a
way to do this that's friendlier to the library release process,
but I'll leave that up to the people who actually build the releases.

I plan to extend the About menu with some radio-related info as
I work on getting BLE pairing working with my iPhone.

src/Watchy.cpp

@@ -72,7 +72,7 @@ void Watchy::handleButtonPress(){
       switch(menuIndex)
       {
         case 0:
-          showBattery();
+          showAbout();
           break;
         case 1:
           showBuzz();
@@ -154,7 +154,7 @@ void Watchy::handleButtonPress(){
                 switch(menuIndex)
                 {
                     case 0:
-                    showBattery();
+                    showAbout();
                     break;
                     case 1:
                     showBuzz();
@@ -223,7 +223,7 @@ void Watchy::showMenu(byte menuIndex, bool partialRefresh){
     uint16_t w, h;
     int16_t yPos;
 
-    const char *menuItems[] = {"Check Battery", "Vibrate Motor", "Show Accelerometer", "Set Time", "Setup WiFi", "Update Firmware", "Sync NTP"};
+    const char *menuItems[] = {"About Watchy", "Vibrate Motor", "Show Accelerometer", "Set Time", "Setup WiFi", "Update Firmware", "Sync NTP"};
     for(int i=0; i<MENU_LENGTH; i++){
     yPos = MENU_HEIGHT+(MENU_HEIGHT*i);
     display.setCursor(0, yPos);
@@ -252,7 +252,7 @@ void Watchy::showFastMenu(byte menuIndex){
     uint16_t w, h;
     int16_t yPos;
 
-    const char *menuItems[] = {"Check Battery", "Vibrate Motor", "Show Accelerometer", "Set Time", "Setup WiFi", "Update Firmware", "Sync NTP"};
+    const char *menuItems[] = {"About Watchy", "Vibrate Motor", "Show Accelerometer", "Set Time", "Setup WiFi", "Update Firmware", "Sync NTP"};
     for(int i=0; i<MENU_LENGTH; i++){
     yPos = MENU_HEIGHT+(MENU_HEIGHT*i);
     display.setCursor(0, yPos);
@@ -272,17 +272,30 @@ void Watchy::showFastMenu(byte menuIndex){
     guiState = MAIN_MENU_STATE;
 }
 
-void Watchy::showBattery(){
+void Watchy::showAbout(){
     display.setFullWindow();
     display.fillScreen(GxEPD_BLACK);
     display.setFont(&FreeMonoBold9pt7b);
     display.setTextColor(GxEPD_WHITE);
-    display.setCursor(20, 30);
-    display.println("Battery Voltage:");
+    display.setCursor(0, 20);
+
+    display.print("FW Ver: ");
+    display.println(Watchy_Version);
+
+    const char *rtc_hw_type;
+    switch (RTC.rtcType) {
+      case 0: rtc_hw_type = "DS3231";  break;
+      case 1: rtc_hw_type = "PCF8563"; break;
+      default: rtc_hw_type = "<unknown>";
+    }
+    display.print("RTC: ");
+    display.println(rtc_hw_type);
+
+    display.print("Batt: ");
     float voltage = getBatteryVoltage();
-    display.setCursor(70, 80);
     display.print(voltage);
     display.println("V");
+
     display.display(false); //full refresh
 
     guiState = APP_STATE;

src/Watchy.h

@@ -16,6 +16,8 @@
 #include "bma.h"
 #include "config.h"
 
+#define Watchy_Version "1.3.1"
+
 typedef struct weatherData{
     int8_t temperature;
     int16_t weatherConditionCode;
@@ -54,7 +56,7 @@ class Watchy {
         void handleButtonPress();
         void showMenu(byte menuIndex, bool partialRefresh);
         void showFastMenu(byte menuIndex);
-        void showBattery();
+        void showAbout();
         void showBuzz();
         void showAccelerometer();
         void showUpdateFW();
@@ -84,4 +86,4 @@ extern RTC_DATA_ATTR BMA423 sensor;
 extern RTC_DATA_ATTR bool WIFI_CONFIGURED;
 extern RTC_DATA_ATTR bool BLE_CONFIGURED;
 
-#endif
+#endif

src/WatchyRTC.cpp

@@ -130,4 +130,4 @@ String WatchyRTC::_getValue(String data, char separator, int index)
   }
 
   return found>index ? data.substring(strIndex[0], strIndex[1]) : "";
-}
+}