Refactoring for stability, etc. Add new animation.

include/wordclock_esp8266.h

@@ -18,15 +18,19 @@ typedef struct
     int nightmode_end_min;
 } NightModeTimes_st;
 
-typedef enum 
+typedef enum
 {
     ST_CLOCK,
     ST_DICLOCK,
     ST_SPIRAL,
     ST_TETRIS,
     ST_SNAKE,
-    ST_PINGPONG
-} clock_state_en;
+    ST_PINGPONG,
+    ST_HEARTS,
+    NUM_STATES
+} ClockState_en;
+
+#define CURRENT_TIME_MS (system_get_time() / 1000) // use ESP time interface
 
 int EEPROM_read_address(int address);
 String leading_zero2digit(int value);
@@ -38,7 +42,7 @@ void handle_current_state(void);
 void handle_data_request(void);
 void handle_led_direct(void);
 void load_main_color(void);
-void ntp_time_update(void);
+void ntp_time_update(unsigned long *last_ntp_update);
 void on_state_entry(uint8_t state);
 void send_heartbeat(void);
 void set_main_color(uint8_t red, uint8_t green, uint8_t blue);