101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
package main
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import (
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"fmt"
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"image/color"
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"machine"
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"sync"
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"time"
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"tinygo.org/x/drivers/ssd1306"
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"tinygo.org/x/tinyfont"
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"tinygo.org/x/tinyfont/freemono"
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"tinygo.org/x/tinyfont/proggy"
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)
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var (
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white = color.RGBA{R: 255, G: 255, B: 255, A: 255}
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black = color.RGBA{R: 0, G: 0, B: 0, A: 255}
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mu sync.Mutex
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currentTime time.Time
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)
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func main() {
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// Configure I2C0 with your pins: GP16 (SDA) and GP17 (SCL)
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machine.I2C0.Configure(machine.I2CConfig{
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Frequency: 400 * machine.KHz,
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SDA: machine.GP16,
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SCL: machine.GP17,
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})
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display := ssd1306.NewI2C(machine.I2C0)
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display.Configure(ssd1306.Config{
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Address: 0x3C,
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Width: 128,
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Height: 64,
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})
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// 1. Splash / Connection screen
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display.ClearBuffer()
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tinyfont.WriteLine(display, &proggy.TinySZ8pt7b, 8, 32, "Connecting Wi-Fi...", white)
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display.Display()
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// 2. Initialize Wi-Fi hardware and lneto stack
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netStack, err := InitNetwork(WifiSSID, WifiPass)
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if err != nil {
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display.ClearBuffer()
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tinyfont.WriteLine(display, &proggy.TinySZ8pt7b, 8, 32, "Wi-Fi Error!", white)
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display.Display()
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println("Wi-Fi init error:", err.Error())
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for {}
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}
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// 3. NTP Fetch Status
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display.ClearBuffer()
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tinyfont.WriteLine(display, &proggy.TinySZ8pt7b, 8, 32, "Syncing NTP...", white)
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display.Display()
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syncedTime, err := netStack.FetchNTP(NtpServer)
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if err != nil {
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println("Initial NTP sync error:", err.Error())
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currentTime = time.Date(2026, time.September, 7, 12, 0, 0, 0, time.UTC)
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} else {
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currentTime = syncedTime
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}
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// 4. Background NTP re-sync routine (every 1 hour)
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go func() {
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resyncTicker := time.NewTicker(1 * time.Hour)
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for range resyncTicker.C {
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if t, err := netStack.FetchNTP(NtpServer); err == nil {
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mu.Lock()
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currentTime = t
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mu.Unlock()
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}
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}
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}()
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// 5. 1Hz UI rendering loop
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ticker := time.NewTicker(1 * time.Second)
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for range ticker.C {
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mu.Lock()
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currentTime = currentTime.Add(1 * time.Second)
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now := currentTime
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mu.Unlock()
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// Optional: Apply timezone offset if needed (e.g. now = now.Add(-4 * time.Hour))
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timeStr := fmt.Sprintf("%02d:%02d:%02d", now.Hour(), now.Minute(), now.Second())
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dateStr := now.Format("Mon, Jan 02 2006")
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display.ClearBuffer()
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// Top: Date with Proggy
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tinyfont.WriteLine(display, &proggy.TinySZ8pt7b, 16, 14, dateStr, white)
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// Center: Time with Freemono Bold 12pt
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tinyfont.WriteLine(display, &freemono.Bold12pt7b, 6, 44, timeStr, white)
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display.Display()
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}
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}
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