Updates to LCD firmware and service

PCPal ESP32C3 Firmware/PCPal ESP32C3 Firmware.ino

@@ -1,60 +0,0 @@
-#include <Wire.h>
-#include <LiquidCrystal_PCF8574.h>
-
-#define I2C_ADDR 0x27  // I2C address of the LCD module
-#define SDA_PIN 8      // ESP32-C3 SuperMini SDA
-#define SCL_PIN 9      // ESP32-C3 SuperMini SCL
-
-LiquidCrystal_PCF8574 lcd(I2C_ADDR);
-
-void setup() {
-    Serial.begin(115200); // USB/UART Serial for PC communication
-    Wire.begin(SDA_PIN, SCL_PIN); // Set I2C pins
-
-    // Initialize LCD
-    lcd.begin(16, 2);
-    lcd.setBacklight(255);
-    lcd.clear();
-    lcd.setCursor(2, 0);
-    lcd.print("ThermalTake");
-    lcd.setCursor(3, 1);
-    lcd.print("Tower 300");
-
-    Serial.println("ESP32-C3 SuperMini Ready");
-}
-
-void loop() {
-    if (Serial.available()) {
-        String command = Serial.readStringUntil('\n'); // Read input from PC
-        command.trim();
-
-        if (command.startsWith("CMD:LCD,")) {
-            handleLCDCommand(command);
-        } else if (command == "CMD:GET_LCD_TYPE") {
-            Serial.println("LCD_TYPE:1602A");
-        }
-    }
-}
-
-// Parse and execute LCD update command
-void handleLCDCommand(String command) {
-    command.replace("CMD:LCD,", ""); // Remove the command header
-    int commaIndex = command.indexOf(',');
-
-    if (commaIndex == -1) return; // Invalid format
-
-    String lineNumber = command.substring(0, commaIndex);
-    String text = command.substring(commaIndex + 1);
-
-    int line = lineNumber.toInt();
-    if (line >= 0 && line < 2) { // Only two lines (0 and 1)
-        lcd.setCursor(0, line);
-        lcd.print("                "); // Clear line
-        lcd.setCursor(0, line);
-        lcd.print(text);
-        Serial.println("LCD Updated");
-    } else {
-        Serial.println("ERROR: Invalid LCD Line");
-    }
-}
-

PCPalConfigurator/ConfiguratorForm.cs

@@ -37,7 +37,7 @@ namespace PCPalConfigurator
 
         private static string GetConfigPath()
         {
-            string folder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "ESP32Display");
+            string folder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "PCPal");
             Directory.CreateDirectory(folder);
             return Path.Combine(folder, "config.json");
         }

PCPalService/Worker.cs

@@ -38,32 +38,53 @@ namespace PCPalService
         {
             Log("ESP32 Background Service Starting...");
 
-            try
+            while (!stoppingToken.IsCancellationRequested)
             {
-                string portName = AutoDetectESP32();
+                try
-                if (portName == null)
                 {
-                    Log("ESP32-C3 not found. Service stopping...");
+                    if (!File.Exists(ConfigFile))
-                    throw new Exception("ESP32 not detected.");
+                    {
+                        Log("Config file not found. Retrying in 5 seconds...");
+                        await Task.Delay(5000, stoppingToken);
+                        continue;
+                    }
+
+                    var config = LoadConfig();
+                    if (serialPort == null || !serialPort.IsOpen)
+                    {
+                        string portName = AutoDetectESP32();
+                        if (portName != null)
+                        {
+                            serialPort = new SerialPort(portName, 115200);
+                            serialPort.Open();
+                            Log($"Connected to ESP32-C3 on {portName}");
+                        }
+                        else
+                        {
+                            Log("ESP32-C3 not found. Retrying in 5 seconds...");
+                            await Task.Delay(5000, stoppingToken);
+                            continue;
+                        }
+                    }
+
+                    string line1 = GetLCDContent(config.Line1Selection, config.Line1CustomText, config.Line1PostText);
+                    string line2 = GetLCDContent(config.Line2Selection, config.Line2CustomText, config.Line2PostText);
+
+                    SendCommand($"CMD:LCD,0,{line1}");
+                    SendCommand($"CMD:LCD,1,{line2}");
+                }
+                catch (Exception ex)
+                {
+                    Log($"Error in service loop: {ex.Message}");
                 }
 
-                serialPort = new SerialPort(portName, 115200);
+                await Task.Delay(5000, stoppingToken);
-                serialPort.Open();
+            }
-                Log($"Connected to ESP32-C3 on {portName}");
 
-                while (!stoppingToken.IsCancellationRequested)
+            serialPort?.Close();
-                {
-                    UpdateLCD();
-                    await Task.Delay(5000, stoppingToken);
-                }
-            }
-            catch (Exception ex)
-            {
-                Log($"Fatal Error: {ex.Message}");
-                Environment.Exit(1); // Force exit, triggering restart
-            }
         }
 
+
         private string AutoDetectESP32()
         {
             foreach (string port in SerialPort.GetPortNames())

PCPal_ESP32C3_Firmware/PCPal_ESP32C3_Firmware.ino

@@ -0,0 +1,74 @@
+#include <Wire.h>
+#include <LiquidCrystal_PCF8574.h>
+
+LiquidCrystal_PCF8574 lcd(0x27); // I2C address for 1602A LCD
+
+unsigned long lastMessageTime = 0;
+const unsigned long timeoutDuration = 10000;
+
+enum DisplayState { SPLASH, WAITING, ACTIVE };
+DisplayState state = SPLASH;
+unsigned long splashStartTime;
+
+void setup() {
+  Wire.begin(8, 9);  // SDA = GPIO 8, SCL = GPIO 9 (XIAO ESP32-C3)
+  lcd.begin(16, 2);
+  lcd.setBacklight(255);
+  Serial.begin(115200);
+
+  showSplashScreen();
+  splashStartTime = millis();
+}
+
+void loop() {
+  // Transition from splash to waiting after 5 seconds
+  if (state == SPLASH && millis() - splashStartTime >= 5000) {
+    showWaitingScreen();
+    state = WAITING;
+  }
+
+  // Process incoming commands from the PC
+  if (Serial.available()) {
+    String command = Serial.readStringUntil('\n');
+    command.trim();
+
+    if (command == "CMD:GET_LCD_TYPE") {
+      Serial.println("LCD_TYPE:1602A");
+    }
+    else if (command.startsWith("CMD:LCD,")) {
+      int line = command.charAt(8) - '0';
+      String text = command.substring(10);
+      text = text.substring(0, (text.length() < 16 ? text.length() : 16));
+
+      lcd.setCursor(0, line);
+      lcd.print("                "); // Clear line
+      lcd.setCursor(0, line);
+      lcd.print(text);
+
+      state = ACTIVE;
+      lastMessageTime = millis();
+    }
+  }
+
+  // If no message for a while, return to "waiting" screen
+  if (state == ACTIVE && millis() - lastMessageTime > timeoutDuration) {
+    showWaitingScreen();
+    state = WAITING;
+  }
+}
+
+void showSplashScreen() {
+  lcd.clear();
+  lcd.setCursor(2, 0);
+  lcd.print("Thermaltake");
+  lcd.setCursor(3, 1);
+  lcd.print("Tower 300");
+}
+
+void showWaitingScreen() {
+  lcd.clear();
+  lcd.setCursor(0, 0);
+  lcd.print("Waiting for");
+  lcd.setCursor(0, 1);
+  lcd.print("connection...");
+}