v.0.0.1 setup Serial output

lib/LedMatrix/src/LedMatrix.cpp

@@ -8,4 +8,44 @@ LedMatrix::LedMatrix(uint8_t h, uint8_t w)
 
 LedMatrix::~LedMatrix()
 {
-}
+}
+
+void LedMatrix::drawPixel(int x, int y, CRGB color)
+{
+    if (x >= 0 && x < 64 && y >= 0 && y < 64)
+    {
+        int index = y * 64 + x; // Row-major order
+        leds[index] = color;
+    }
+}
+
+void LedMatrix::drawChar(int x, int y, char c, CRGB color)
+{
+    const uint8_t *fontData = getFontChar(c);
+    for (int row = 0; row < 7; row++)
+    {
+        uint8_t line = fontData[row];
+        for (int col = 0; col < 5; col++)
+        {
+            if (line & (1 << (4 - col)))
+            {
+                drawPixel(x + col, y + row, color);
+            }
+        }
+    }
+}
+
+// Draw text string
+void LedMatrix::drawText(int x, int y, const char *text, CRGB color)
+{
+    int cursorX = x;
+    for (int i = 0; text[i] != '\0'; i++)
+    {
+        u_int8_t w = getCharWidth(text[i]);
+        // Debug output
+        Serial.printf("Char %d: '%c' -> width %d at X=%d\n\r",
+                      i, text[i], w, cursorX);
+        drawChar(cursorX, y, text[i], color);
+        cursorX += 6; // 5 pixels width + 1 pixel spacing
+    }
+}

lib/LedMatrix/src/LedMatrix.h

@@ -24,41 +24,10 @@ public:
 
     ~LedMatrix();
 
-    void drawPixel(int x, int y, CRGB color)
-    {
-        if (x >= 0 && x < 64 && y >= 0 && y < 64)
-        {
-            int index = y * 64 + x; // Row-major order
-            leds[index] = color;
-        }
-    }
-
-    void drawChar(int x, int y, char c, CRGB color)
-    {
-        const uint8_t *fontData = getFontChar(c);
-        for (int row = 0; row < 7; row++)
-        {
-            uint8_t line = fontData[row];
-            for (int col = 0; col < 5; col++)
-            {
-                if (line & (1 << (4 - col)))
-                {
-                    drawPixel(x + col, y + row, color);
-                }
-            }
-        }
-    }
-
+    void drawPixel(int x, int y, CRGB color);
+    void drawChar(int x, int y, char c, CRGB color);
     // Draw text string
-    void drawText(int x, int y, const char *text, CRGB color)
-    {
-        int cursorX = x;
-        for (int i = 0; text[i] != '\0'; i++)
-        {
-            drawChar(cursorX, y, text[i], color);
-            cursorX += 6; // 5 pixels width + 1 pixel spacing
-        }
-    }
+    void drawText(int x, int y, const char *text, CRGB color);
 };
 
 #endif

src/main.cpp

@@ -57,6 +57,14 @@ void playWithBlinkLed()
 
 void setup()
 {
+    // Initialize Serial for debug output
+    Serial.begin(115200);
+
+    // Wait for Serial to be ready (important for some boards)
+    while (!Serial)
+    {
+        delay(10);
+    }
     matrix.setBrightness(255);
 
     matrix.clear();