Added networking stack (mostly copied from pico-weather) and added NTP sync

main.go

@@ -4,28 +4,31 @@ import (
 	"fmt"
 	"image/color"
 	"machine"
+	"sync"
 	"time"
 
 	"tinygo.org/x/drivers/ssd1306"
 	"tinygo.org/x/tinyfont"
+	"tinygo.org/x/tinyfont/freemono"
 	"tinygo.org/x/tinyfont/proggy"
-  "tinygo.org/x/tinyfont/freemono"
 )
 
 var (
 	white = color.RGBA{R: 255, G: 255, B: 255, A: 255}
 	black = color.RGBA{R: 0, G: 0, B: 0, A: 255}
+
+	mu          sync.Mutex
+	currentTime time.Time
 )
 
 func main() {
-	// Configure I2C0 using GP4 (SDA) and GP5 (SCL) at 400kHz
+	// Configure I2C0 with your pins: GP16 (SDA) and GP17 (SCL)
 	machine.I2C0.Configure(machine.I2CConfig{
 		Frequency: 400 * machine.KHz,
-    SDA:       machine.GP16,
-    SCL:       machine.GP17,
+		SDA:       machine.GP16,
+		SCL:       machine.GP17,
 	})
 
-	// Initialize the display (default I2C address for SSD1306 is usually 0x3C)
 	display := ssd1306.NewI2C(machine.I2C0)
 	display.Configure(ssd1306.Config{
 		Address: 0x3C,
@@ -33,28 +36,65 @@ func main() {
 		Height:  64,
 	})
 
-	display.ClearDisplay()
+	// 1. Splash / Connection screen
+	display.ClearBuffer()
+	tinyfont.WriteLine(display, &proggy.TinySZ8pt7b, 8, 32, "Connecting Wi-Fi...", white)
+	display.Display()
 
-	// Base time for clock tracking (update to current time or set via NTP)
-	currentTime := time.Date(2026, time.September, 7, 12, 0, 0, 0, time.UTC)
+	// 2. Initialize Wi-Fi hardware and lneto stack
+  netStack, err := InitNetwork(WifiSSID, WifiPass)
+	if err != nil {
+		display.ClearBuffer()
+		tinyfont.WriteLine(display, &proggy.TinySZ8pt7b, 8, 32, "Wi-Fi Error!", white)
+		display.Display()
+		println("Wi-Fi init error:", err.Error())
+		for {}
+	}
+
+	// 3. NTP Fetch Status
+	display.ClearBuffer()
+	tinyfont.WriteLine(display, &proggy.TinySZ8pt7b, 8, 32, "Syncing NTP...", white)
+	display.Display()
+
+  syncedTime, err := netStack.FetchNTP(NtpServer)
+	if err != nil {
+		println("Initial NTP sync error:", err.Error())
+		currentTime = time.Date(2026, time.September, 7, 12, 0, 0, 0, time.UTC)
+	} else {
+		currentTime = syncedTime
+	}
+
+	// 4. Background NTP re-sync routine (every 1 hour)
+	go func() {
+		resyncTicker := time.NewTicker(1 * time.Hour)
+		for range resyncTicker.C {
+      if t, err := netStack.FetchNTP(NtpServer); err == nil {
+				mu.Lock()
+				currentTime = t
+				mu.Unlock()
+			}
+		}
+	}()
+
+	// 5. 1Hz UI rendering loop
 	ticker := time.NewTicker(1 * time.Second)
-
 	for range ticker.C {
+		mu.Lock()
 		currentTime = currentTime.Add(1 * time.Second)
+		now := currentTime
+		mu.Unlock()
 
-		// Format time and date strings
-		timeStr := fmt.Sprintf("%02d:%02d:%02d", currentTime.Hour(), currentTime.Minute(), currentTime.Second())
-		dateStr := currentTime.Format("Mon, Jan 02 2006")
+		// Optional: Apply timezone offset if needed (e.g. now = now.Add(-4 * time.Hour))
+		timeStr := fmt.Sprintf("%02d:%02d:%02d", now.Hour(), now.Minute(), now.Second())
+		dateStr := now.Format("Mon, Jan 02 2006")
 
-		// Clear screen buffer
 		display.ClearBuffer()
 
-		// Render text to display buffer:
-		// WriteLine(target, font, x, y, text, color)
+		// Top: Date with Proggy
 		tinyfont.WriteLine(display, &proggy.TinySZ8pt7b, 16, 14, dateStr, white)
+		// Center: Time with Freemono Bold 12pt
 		tinyfont.WriteLine(display, &freemono.Bold12pt7b, 6, 44, timeStr, white)
 
-		// Push frame buffer to the OLED panel
 		display.Display()
 	}
 }