diff --git a/ssd1306.c b/ssd1306.c
--- a/ssd1306.c
+++ b/ssd1306.c
@@ -86,7 +86,6 @@ void ssd1306_Init(void)
   for(i=5000; i>1; i--) 
   SSD_Reset_High();
 
-
   WriteCommand(0xAE);
   WriteCommand(0xD5);
   WriteCommand(0x80);
@@ -113,93 +112,10 @@ void ssd1306_Init(void)
   WriteCommand(0xA6); // normaldisplay
 
   WriteCommand(0xAF); // display on 
-
-
-  // Clear buffer
-//  for(i=0;i<900;i++)
-//    ssd1306_Buffer[i] = 0;
-  
-  /*************************************************
-  // ssd1306 Initialization Command
-  *************************************************/
- /* 
-  // Lower Column Address
-  WriteCommand(0x00); // Set Lower Column Address 
-  GPIO_SetBits(GPIOA,GPIO_Pin_15);//turn on status LED
-  // High Column Address
-  WriteCommand(0x10); // Set Higher Column Address
-  // Display Start Line
-  WriteCommand(0x40); // Set Display Start Line 
-#ifdef    DEBUG_BOARD
-  curContrast = lastContrast = 0x30;
-#else
-  curContrast = lastContrast = 0xCF;
-#endif
-  // Contrast Control Register
-  WriteCommand(0x81); // Set Contrast Control 
-  WriteCommand(lastContrast); // 0 ~ 255 0x1f
-  
-  // Re-map
-  WriteCommand(0xA1); // [A0]:column address 0 is map to SEG0 , [A1]: columnaddress 131 is map to SEG0 
-  // Entire Display ON/OFF
-  WriteCommand(0xA4); // A4=ON 
-  // Normal or Inverse Display
-  WriteCommand(0XA6); // Normal Display
-  // Multiplex Ratio
-  WriteCommand(0xA8); // Set Multiplex Ratio 
-  WriteCommand(0x3f); // Set to 36 Mux
-  // Set DC-DC
-  WriteCommand(0xAD); // Set DC-DC 
-  WriteCommand(0x8B); // 8B=ON, 8A=Off 
- 
- 
-  // Display ON/OFF
-  WriteCommand(0xAE); // AF=ON , AE=OFF
-  // Display Offset
-  WriteCommand(0xD3); // Set Display Offset 
-  WriteCommand(0x00); // No offset 
-  // Display Clock Divide
-  WriteCommand(0xD5); // Set Clock Divide 
-  WriteCommand(0x20); // Set to 80Hz 
-  // Area Color Mode
-  WriteCommand(0xD8); // Set Area Color On or Off
-  WriteCommand(0x00); // Mono Mode 
-  // COM Pins Hardware Configuration
-  WriteCommand(0xDA); // Set Pins HardwareConfiguration 
-  WriteCommand(0x12);
-  // VCOMH
-  WriteCommand(0xDB); // Set VCOMH 
-  WriteCommand(0x00);
-  // VP
-  WriteCommand(0xD9); // Set VP 
-  WriteCommand(0x22); // P1=2 , P2=2 
-  
-  // Set Common output scan direction
-  WriteCommand(0xc8);// Set COM scan direction 
-  
-  // For SSD1306 Set the address mode
-  WriteCommand(0x20);// Set address mode 
-  WriteCommand(0x00);// Set address mode horizontal 
-  
-  // Set the page start address
-  WriteCommand(0xb0);
-  WriteCommand(0x00);
-  WriteCommand(0x10);
-  
-  // Turn on the controller 
-  pre_on = ssd1306_ON();
-//  // Set Charge pump
-//  WriteCommand(0x8D); // Set Charge pump 
-//  WriteCommand(0x14); // 0x14=ON, 0x10=Off 
-//  
-//  // Turn on the display
-//  WriteCommand(0xaf);
-*/
 }
 
 void ssd1306_block_write(void)
 {
- 
   // Set col start addr to 0
   WriteCommand(0x21); 
   WriteCommand(0x00); 
@@ -211,16 +127,10 @@ void ssd1306_block_write(void)
   WriteCommand(0x00); // start page addr
   WriteCommand(4); // end page addr (height / 8)
 
-
+  // Write data
   uint32_t i = 0;
-
-
-
   for(i=0;i<512;i++)
     WriteData(ssd1306_Buffer[i]);
-//  for(i=0;i<512;i++)
-             // * * * * 
-//    WriteData(0b00000011);
 }
 
 
@@ -594,13 +504,7 @@ const DeviceProp  ssd1306_Prop =
   .yPixel = 64,
 };
 
-
-
-
-
-
-// FontData
-
+// Times New Roman font
 const char fontData[240][5] =
 {                                       // Refer to "Times New Roman" Font Database
                                         //   Basic Characters