diff --git a/ssd1306.c b/ssd1306.c
--- a/ssd1306.c
+++ b/ssd1306.c
@@ -635,6 +635,60 @@ void setStartColumn(unsigned char d)
                                 // Default => 0x10
 }
 
+
+const uint8_t row[4][32] = { 
+
+
+{0x00,0x00,0x01,0x03,0x07,0x0F,0x1E,0x3C,0x3C,0x7C,0x7C,0x7C,0xFC,0xFF,0xFF,0xFC,0xFC,0xFC,0xFC,0xFF,0x7F,0x7F,0x7F,0x3C,0x3C,0x1C,0x0C,0x06,0x03,0x01,0x00,0x00},
+
+{0x0F,0x7F,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x3F,0x3F,0x7F,0xFF,0xFF,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0x7F,0x0F},
+
+{0xF0,0xFE,0xFF,0xFF,0xFF,0xC7,0x00,0x00,0x00,0x00,0x87,0xC7,0xC7,0xFF,0xFF,0x00,0x00,0x00,0x00,0x87,0x87,0xC7,0xC3,0x03,0x07,0x07,0x0F,0x7F,0xFF,0xFF,0xFE,0xF0},
+
+{0x00,0x00,0x80,0xC0,0xE0,0xF0,0xF8,0xFC,0xFC,0xFE,0xFE,0xFE,0xFF,0xFF,0xFF,0x1F,0x1F,0x1F,0x1F,0xFF,0xFE,0xFE,0xFE,0xFC,0xFC,0xF8,0xF0,0xE0,0xC0,0x80,0x00,0x00},
+
+
+
+
+};
+
+void ssd1306_test()
+{
+    uint8_t i = 0;
+    setStartPage(3);
+    setStartColumn(0);
+    for(i = 0; i<32; i++)
+    {
+        WriteData(row[0][i]);
+    }
+
+    WriteData(0x00);
+
+    setStartPage(2);
+    setStartColumn(0);
+    for(i = 0; i<32; i++)
+    {
+        WriteData(row[1][i]);
+    }
+    WriteData(0x00);
+
+    setStartPage(1);
+    setStartColumn(0);
+    for(i = 0; i<32; i++)
+    {
+        WriteData(row[2][i]);
+    }
+    WriteData(0x00);
+
+    setStartPage(0);
+    setStartColumn(0);
+    for(i = 0; i<32; i++)
+    {
+        WriteData(row[3][i]);
+    }
+    WriteData(0x00);
+}
+
 /* Print a single character from font.cpp */
 void ssd1306_DrawChar(char ascii, unsigned char row, unsigned char xPos)
 {