Project initial upload

PCPal ESP32C3 Firmware/PCPal ESP32C3 Firmware.ino

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+#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");
+    }
+}
+