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Changeset - bf4d568491ad

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Ethan Zonca - 10 years ago 2014-08-18 23:12:13
ez@ethanzonca.com

Remove old code

2 files changed with 2 insertions and 493 deletions:

ssd1306.c

system_stm32l1xx_4meg_extxtal.c

395

0 comments (0 inline, 0 general)

ssd1306.c

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 /*******************************************************************************
 * File Name          : ssd1306.c
 * Author             : lxyppc
 * Version            : V1.0
 * Date               : 10-01-21
 * Description        : ssd1306 operations
 *                      the SSH1101A is compatible with ssd1306
 *******************************************************************************/
 /* Includes ------------------------------------------------------------------*/
 #include "stm32l100c_discovery.h"
 #include "bsp.h"
 #include "ssd1306.h"
 /* Private typedef -----------------------------------------------------------*/
 /* Private define ------------------------------------------------------------*/
 #define   SSD1306_PAGE_NUMBER           8
 #define   SSD1306_COLUMN_NUMBER         128
 #define   SSD1306_COLUMN_MARGIN_START   2
 #define   SSD1306_COLUMN_MARGIN_END     2
 #define   SSD1306_X_PIXEL   128
 #define   SSD1306_Y_PIXEL   32
 /* Private macro -------------------------------------------------------------*/
 #define   ssd1306_Buffer    (_SSD1306_Buffer + SSD1306_COLUMN_MARGIN_START)
 /* Private variables ---------------------------------------------------------*/
 static  uint8_t  _SSD1306_Buffer[SSD1306_COLUMN_NUMBER*SSD1306_PAGE_NUMBER + SSD1306_COLUMN_MARGIN_START + SSD1306_COLUMN_MARGIN_END] = {0};
 static  uint8_t  pageIndex = 0;
 static  uint8_t  iS_SSD_On = 0;
 static  uint8_t  pre_on = 0;
 static  uint8_t  curContrast = 0xCC;
 static  uint8_t  lastContrast = 0xCC;
 /* Private function prototypes -----------------------------------------------*/
 void  WriteCommand(unsigned char command);
 void  WriteData(unsigned char data);
 void  OnPageTransferDone(void);
 unsigned long ssd1306_OFF(void);
 unsigned long ssd1306_ON(void);
 unsigned char* ssd1306_GetBuffer()
+{
   return ssd1306_Buffer;
+}
 /*******************************************************************************
 * Function Name  : WriteCommand
 * Description    : Write command to the ssd1306
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 void WriteCommand(unsigned char command)
+{
   SSD_A0_Low();
   SPI_SendByte(command);
   SPI_Wait();
+}
 /*******************************************************************************
 * Function Name  : WriteData
 * Description    : Write data to the ssd1306
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 void WriteData(unsigned char data)
+{
   SSD_A0_High();
   SPI_SendByte(data);
   SPI_Wait();
+}
 /*******************************************************************************
 * Function Name  : ssd1306_Init
 * Description    : Initialize the ssd1306
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 void ssd1306_Init(void)
+{
   /* Generate a reset */
   SSD_Reset_Low();
   uint32_t i;
   for(i=5000; i>1; i--)
   SSD_Reset_High();
   WriteCommand(0xAE);
   WriteCommand(0xD5);
   WriteCommand(0x80);
   WriteCommand(0xA8);
   WriteCommand(0x1F);
   WriteCommand(0xD3);
   WriteCommand(0x00);
   WriteCommand(0x40 | 0x00); // line #0
   WriteCommand(0x8D);
   WriteCommand(0x14); //10 or 14 if not externalvcc
   WriteCommand(0x20);
   WriteCommand(0x00);
   WriteCommand(0xA0 | 0x1); // segremap
   WriteCommand(0xC8); // comscandep
   WriteCommand(0xDA); // setcompins
   WriteCommand(0x02);
   WriteCommand(0x81); // contrast
   WriteCommand(0x0F); // contrast value. 8f is a good one.
   WriteCommand(0xD9);
   WriteCommand(0xF1); //22 or F1 if not externalvcc
   WriteCommand(0xDB);
   WriteCommand(0x40);
   WriteCommand(0xA4); // dispalyallon_resume
   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);
   // Set col end addr to width - 1
   WriteCommand(127);
   // Set page addr
   WriteCommand(0x22);
   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);
+}
 /*******************************************************************************
 * Function Name  : ssd1306_TurnOff
 * Description    : Turn off the ssd1306 controller
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned long ssd1306_TurnOff(void)
+{
   pre_on = 0;
   return iS_SSD_On;
+}
 /*******************************************************************************
 * Function Name  : ssd1306_TurnOn
 * Description    : Turn off the ssd1306 controller
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned long ssd1306_TurnOn(void)
+{
   pre_on = 1;
   return iS_SSD_On;
+}
 /*******************************************************************************
 * Function Name  : ssd1306_SetContrast
 * Description    : Set the ssd1306 contrast
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned char ssd1306_SetContrast(unsigned char contrast)
+{
   curContrast = contrast;
   return lastContrast;
+}
 /*******************************************************************************
 * Function Name  : ssd1306_GetContrast
 * Description    : Get the ssd1306 contrast
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned char ssd1306_GetContrast()
+{
   return lastContrast;
+}
 /*******************************************************************************
 * Function Name  : ssd1306_OFF
 * Description    : Turn off the ssd1306 controller
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned long ssd1306_OFF(void)
+{
   if(iS_SSD_On){
 #ifdef  DEBUG_UI
     uint32_t i = 0;
     for(i=0;i<ssd1306_COLUMN_NUMBER*SSD1306_PAGE_NUMBER;i++){
       ssd1306_Buffer[i] = 0;
+    }
 #else
     // Turn off the display
     WriteCommand(0xae);
     // Set Charge pump
     WriteCommand(0x8D); /* Set Charge pump */
     WriteCommand(0x10); /* 0x14=ON, 0x10=Off */
 #endif
     iS_SSD_On = 0;
+  }
   return iS_SSD_On;
+}
 /*******************************************************************************
 * Function Name  : ssd1306_ON
 * Description    : Turn on the ssd1306 controller
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned long ssd1306_ON(void)
+{
   if(!iS_SSD_On){
 #ifdef  DEBUG_UI
 #else
   #ifdef    DEBUG_BOARD
   #else
     // Set Charge pump
     WriteCommand(0x8D); /* Set Charge pump */
     WriteCommand(0x14); /* 0x14=ON, 0x10=Off */
   #endif
     // Turn on the display
     WriteCommand(0xaf);
 #endif
     iS_SSD_On = 1;
+  }
   return iS_SSD_On;
+}
 /*******************************************************************************
 * Function Name  : ssd1306_IsOn
 * Description    : Check whether the ssd1306 is on or off
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned long ssd1306_IsOn(void)
+{
   return iS_SSD_On;
+}
 /*******************************************************************************
 * Function Name  : OnPageTransferDone
 * Description    : Called when each page transfer done
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 void  OnPageTransferDone(void)
+{
   if(pageIndex == SSD1306_PAGE_NUMBER){
     pageIndex = 0;
     return;
+  }
 #ifdef    DEBUG_BOARD
   WriteCommand(0xb0 + pageIndex);
   if(pageIndex == 0){
     WriteCommand(0x00);
     WriteCommand(0x10);
+  }
   SSD_A0_High();
   DMA1_Channel5->CCR &= ((uint32_t)0xFFFFFFFE);
   DMA1_Channel5->CNDTR = ssd1306_COLUMN_NUMBER+SSD1306_COLUMN_MARGIN_START + SSD1306_COLUMN_MARGIN_END;
   DMA1_Channel5->CMAR = (uint32_t)(ssd1306_Buffer+SSD1306_COLUMN_NUMBER*pageIndex - SSD1306_COLUMN_MARGIN_START);
   DMA_SSD_1306->CCR |= ((uint32_t)0x00000001);
   pageIndex++;
 #else
   SSD_A0_High();
   DMA_SSD_1306->CCR &= ((uint32_t)0xFFFFFFFE);
   DMA_SSD_1306->CNDTR = SSD1306_COLUMN_NUMBER*SSD1306_PAGE_NUMBER;//+SSD1306_COLUMN_MARGIN_START + SSD1306_COLUMN_MARGIN_END;
   DMA_SSD_1306->CMAR = (uint32_t)(ssd1306_Buffer);//+SSD1306_COLUMN_NUMBER*pageIndex);
   //DMA_Cmd(DMA_SSD_1306, ENABLE);
   DMA_SSD_1306->CCR |= ((uint32_t)0x00000001);
 //  pageIndex++;
   pageIndex = SSD1306_PAGE_NUMBER;
 #endif
+}
 /*******************************************************************************
 * Function Name  : DMA1_Channel5_IRQHandler
 * Description    : This function handles DMA1 Channel 5 interrupt request.
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 void DMA_Handler_SSD_1306(void) //DMA1_Channel5_IRQHandler(void)
+{
   if(DMA_GetITStatus(DMA1_IT_TC5)){
     DMA_ClearITPendingBit(DMA1_IT_GL5);
     OnPageTransferDone();
+  }
+}
 /*******************************************************************************
 * Function Name  : StartPageTransfer
 * Description    : Start a new page transfer
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 void StartPageTransfer(void)
+{
   pageIndex = 0;
   if(pre_on){
     if(iS_SSD_On == 0){
       pre_on = ssd1306_ON();
+    }
   }else{
     if(iS_SSD_On){
       pre_on = ssd1306_OFF();
+    }
+  }
   if( curContrast != lastContrast ){
     lastContrast = curContrast;
     WriteCommand(0x81); /* Set Contrast Control */
     WriteCommand(lastContrast); /* 0 ~ 255 0x1f*/
+  }
   if(iS_SSD_On){
     OnPageTransferDone();
+  }
+}
 /*******************************************************************************
   Display related functions
  ******************************************************************************/
 /*******************************************************************************
 * Function Name  : ssd1306_DrawBlock
 * Description    : Draw a block with specify data to ssd1306
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned long ssd1306_DrawBlock(
   Pos_t x,
   Pos_t y,
   Pos_t cx,
   Pos_t cy,
   const unsigned char* data)
+{
   if(x >= SSD1306_X_PIXEL)return 0;
   if(y >= SSD1306_Y_PIXEL)return 0;
   if(x+cx > SSD1306_X_PIXEL ) cx = SSD1306_X_PIXEL - x ;
   if(y+cy > SSD1306_Y_PIXEL ) cy = SSD1306_Y_PIXEL - y ;
   unsigned char* pStart = ssd1306_Buffer + (y/8)*SSD1306_COLUMN_NUMBER + x;
   unsigned char offset1 = y%8;
   unsigned char offset2 = (cy+y)%8;
   if(data){
     unsigned char mask1 = (1<<offset1)-1;
     unsigned char mask2 = ~((1<<offset2)-1);
     cy = (cy+offset1)/8;
     Pos_t i = 0;
     for(i=0;i<cx;i++){
       Pos_t j = 0;
       unsigned short tmp = *pStart & mask1;
       for(;j<cy;j++){
         tmp |= (((unsigned short)data[j*cx])<<offset1);
         *(pStart + j*SSD1306_COLUMN_NUMBER) = tmp;
         tmp>>=8;
+      }
       if(offset2){
         tmp |= ((((unsigned short)data[j*cx])<<offset1) & (~mask2))
             | *(pStart + j*SSD1306_COLUMN_NUMBER) & mask2;
         *(pStart + j*SSD1306_COLUMN_NUMBER) = tmp;
+      }
       data++;
       pStart++;
+    }
   }else{
     unsigned char mask1 = ~((1<<offset1)-1);
     unsigned char mask2 = ((1<<offset2)-1);
     cy = (cy+offset1)/8;
     Pos_t i = 0;
     for(i=0;i<cx;i++){
       Pos_t j = 1;
       *pStart ^= mask1;
       for(;j<cy;j++){
         *(pStart + j*SSD1306_COLUMN_NUMBER) ^= 0xFF;
+      }
       if(offset2){
         *(pStart + j*SSD1306_COLUMN_NUMBER) ^= mask2;
+      }
       pStart++;
+    }
+  }
 //  if(!offset){
 //    for(Pos_t i=0;i<cx;i++){
 //      unsigned char tmp;
 //      Pos_t j = 0;
 //      for(;j<cy/8;j++){
 //        tmp = data[i+j*cx];
 //        *(pStart + j*ssd1306_COLUMN_NUMBER + i + x) = tmp;
 //      }
 //      if(cy&0x7){
 //        unsigned char mask1 = (1<<(cy&7)) - 1;
 //        unsigned char mask2 = 0xFF - mask1;
 //        tmp = (data[i+j*cx] & mask1)
 //            | (*(pStart + j*ssd1306_COLUMN_NUMBER + i + x) & mask2);
 //        *(pStart + j*ssd1306_COLUMN_NUMBER + i + x) = tmp;
 //      }
 //    }
 //  }else{
 //    for(Pos_t i=0;i<cx;i++){
 //      unsigned short tmp;
 //      for(Pos_t j=0;j<cy/8;j++){
 //        if(j == 0){
 //          // First line
 //          tmp = *(pStart + j*ssd1306_COLUMN_NUMBER + i + x) & mask;
 //        }
 //        tmp |= (((unsigned short)data[i+j*cx])<<offset);
 //        *(pStart + j*ssd1306_COLUMN_NUMBER + i + x) = tmp;
 //        tmp>>=8;
 //        if(j == (cy/8)-1){
 //          // Last line
 //          *(pStart + (j+1)*ssd1306_COLUMN_NUMBER + i + x) &= ~mask;
 //          *(pStart + (j+1)*ssd1306_COLUMN_NUMBER + i + x) |= tmp;
 //        }
 //      }
 //    }
 //  }
   return 0;
+}
 /*******************************************************************************
 * Function Name  : ssd1306_DrawPoint
 * Description    : Draw a point with specify data to ssd1306
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned long ssd1306_DrawPoint(
   Pos_t x,
   Pos_t y,
   Color_t color)
+{
   if(x >= SSD1306_X_PIXEL)return 0;
   if(y >= SSD1306_Y_PIXEL)return 0;
   unsigned char* pStart = ssd1306_Buffer + (y/8)*SSD1306_COLUMN_NUMBER + x;
   unsigned char mask = 1<<(y%8);
   if(color){
     *pStart |= mask;
   }else{
     *pStart &= ~mask;
+  }
   return 0;
+}
 /*******************************************************************************
 * Function Name  : ssd1306_ReadPoint
 * Description    : Read a point from ssd1306
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 unsigned long ssd1306_ReadPoint(
   Pos_t x,
   Pos_t y)
+{
   unsigned char* pStart = ssd1306_Buffer + (y/8)*SSD1306_COLUMN_NUMBER + x;
   unsigned char mask = 1<<(y%8);
   return *pStart&mask ? 1 : 0;
+}
 /*******************************************************************************
 * Function Name  : ssd1306_ClearScreen
 * Description    : Clear the screen contents
 * Input          : None
 * Output         : None
 * Return         : None
 *******************************************************************************/
 void  ssd1306_FillScreen(Color_t color)
+{
   unsigned char mask = color ? 0xFF : 0;
   unsigned long i = 0;
   for(i=0;i<SSD1306_COLUMN_NUMBER*SSD1306_PAGE_NUMBER;i++){
     ssd1306_Buffer[i] = mask;
+  }
+}
 const DeviceProp  ssd1306_Prop =
+{
   .pfnDrawBlok = ssd1306_DrawBlock,
   .pfnDrawPoint = ssd1306_DrawPoint,
   .xPixel = 128,
   .yPixel = 64,
 };
 // FontData
 // Times New Roman font
 const char fontData[240][5] =
 {                                       // Refer to "Times New Roman" Font Database
                                         //   Basic Characters
     {0x00,0x00,0x00,0x00,0x00},         //   (  0)    - 0x0020 No-Break Space
     {0x00,0x00,0x4F,0x00,0x00},         //   (  1)  ! - 0x0021 Exclamation Mark
     {0x00,0x07,0x00,0x07,0x00},         //   (  2)  " - 0x0022 Quotation Mark
     {0x14,0x7F,0x14,0x7F,0x14},         //   (  3)  # - 0x0023 Number Sign
     {0x24,0x2A,0x7F,0x2A,0x12},         //   (  4)  $ - 0x0024 Dollar Sign
     {0x23,0x13,0x08,0x64,0x62},         //   (  5)  % - 0x0025 Percent Sign
     {0x36,0x49,0x55,0x22,0x50},         //   (  6)  & - 0x0026 Ampersand
     {0x00,0x05,0x03,0x00,0x00},         //   (  7)  ' - 0x0027 Apostrophe
     {0x00,0x1C,0x22,0x41,0x00},         //   (  8)  ( - 0x0028 Left Parenthesis
     {0x00,0x41,0x22,0x1C,0x00},         //   (  9)  ) - 0x0029 Right Parenthesis
     {0x14,0x08,0x3E,0x08,0x14},         //   ( 10)  * - 0x002A Asterisk
     {0x08,0x08,0x3E,0x08,0x08},         //   ( 11)  + - 0x002B Plus Sign
     {0x00,0x50,0x30,0x00,0x00},         //   ( 12)  , - 0x002C Comma
     {0x08,0x08,0x08,0x08,0x08},         //   ( 13)  - - 0x002D Hyphen-Minus
     {0x00,0x60,0x60,0x00,0x00},         //   ( 14)  . - 0x002E Full Stop
     {0x20,0x10,0x08,0x04,0x02},         //   ( 15)  / - 0x002F Solidus
     {0x3E,0x51,0x49,0x45,0x3E},         //   ( 16)  0 - 0x0030 Digit Zero
     {0x00,0x42,0x7F,0x40,0x00},         //   ( 17)  1 - 0x0031 Digit One
     {0x42,0x61,0x51,0x49,0x46},         //   ( 18)  2 - 0x0032 Digit Two
     {0x21,0x41,0x45,0x4B,0x31},         //   ( 19)  3 - 0x0033 Digit Three
     {0x18,0x14,0x12,0x7F,0x10},         //   ( 20)  4 - 0x0034 Digit Four
     {0x27,0x45,0x45,0x45,0x39},         //   ( 21)  5 - 0x0035 Digit Five
     {0x3C,0x4A,0x49,0x49,0x30},         //   ( 22)  6 - 0x0036 Digit Six
     {0x01,0x71,0x09,0x05,0x03},         //   ( 23)  7 - 0x0037 Digit Seven
     {0x36,0x49,0x49,0x49,0x36},         //   ( 24)  8 - 0x0038 Digit Eight
     {0x06,0x49,0x49,0x29,0x1E},         //   ( 25)  9 - 0x0039 Dight Nine
     {0x00,0x36,0x36,0x00,0x00},         //   ( 26)  : - 0x003A Colon
     {0x00,0x56,0x36,0x00,0x00},         //   ( 27)  ; - 0x003B Semicolon
     {0x08,0x14,0x22,0x41,0x00},         //   ( 28)  < - 0x003C Less-Than Sign
     {0x14,0x14,0x14,0x14,0x14},         //   ( 29)  = - 0x003D Equals Sign
     {0x00,0x41,0x22,0x14,0x08},         //   ( 30)  > - 0x003E Greater-Than Sign
     {0x02,0x01,0x51,0x09,0x06},         //   ( 31)  ? - 0x003F Question Mark
     {0x32,0x49,0x79,0x41,0x3E},         //   ( 32)  @ - 0x0040 Commercial At
     {0x7E,0x11,0x11,0x11,0x7E},         //   ( 33)  A - 0x0041 Latin Capital Letter A
     {0x7F,0x49,0x49,0x49,0x36},         //   ( 34)  B - 0x0042 Latin Capital Letter B
     {0x3E,0x41,0x41,0x41,0x22},         //   ( 35)  C - 0x0043 Latin Capital Letter C
     {0x7F,0x41,0x41,0x22,0x1C},         //   ( 36)  D - 0x0044 Latin Capital Letter D
     {0x7F,0x49,0x49,0x49,0x41},         //   ( 37)  E - 0x0045 Latin Capital Letter E
     {0x7F,0x09,0x09,0x09,0x01},         //   ( 38)  F - 0x0046 Latin Capital Letter F
     {0x3E,0x41,0x49,0x49,0x7A},         //   ( 39)  G - 0x0047 Latin Capital Letter G
     {0x7F,0x08,0x08,0x08,0x7F},         //   ( 40)  H - 0x0048 Latin Capital Letter H
     {0x00,0x41,0x7F,0x41,0x00},         //   ( 41)  I - 0x0049 Latin Capital Letter I
     {0x20,0x40,0x41,0x3F,0x01},         //   ( 42)  J - 0x004A Latin Capital Letter J
     {0x7F,0x08,0x14,0x22,0x41},         //   ( 43)  K - 0x004B Latin Capital Letter K
     {0x7F,0x40,0x40,0x40,0x40},         //   ( 44)  L - 0x004C Latin Capital Letter L
     {0x7F,0x02,0x0C,0x02,0x7F},         //   ( 45)  M - 0x004D Latin Capital Letter M
     {0x7F,0x04,0x08,0x10,0x7F},         //   ( 46)  N - 0x004E Latin Capital Letter N
     {0x3E,0x41,0x41,0x41,0x3E},         //   ( 47)  O - 0x004F Latin Capital Letter O
     {0x7F,0x09,0x09,0x09,0x06},         //   ( 48)  P - 0x0050 Latin Capital Letter P
     {0x3E,0x41,0x51,0x21,0x5E},         //   ( 49)  Q - 0x0051 Latin Capital Letter Q
     {0x7F,0x09,0x19,0x29,0x46},         //   ( 50)  R - 0x0052 Latin Capital Letter R
     {0x46,0x49,0x49,0x49,0x31},         //   ( 51)  S - 0x0053 Latin Capital Letter S
     {0x01,0x01,0x7F,0x01,0x01},         //   ( 52)  T - 0x0054 Latin Capital Letter T
     {0x3F,0x40,0x40,0x40,0x3F},         //   ( 53)  U - 0x0055 Latin Capital Letter U
     {0x1F,0x20,0x40,0x20,0x1F},         //   ( 54)  V - 0x0056 Latin Capital Letter V
     {0x3F,0x40,0x38,0x40,0x3F},         //   ( 55)  W - 0x0057 Latin Capital Letter W
     {0x63,0x14,0x08,0x14,0x63},         //   ( 56)  X - 0x0058 Latin Capital Letter X
     {0x07,0x08,0x70,0x08,0x07},         //   ( 57)  Y - 0x0059 Latin Capital Letter Y
     {0x61,0x51,0x49,0x45,0x43},         //   ( 58)  Z - 0x005A Latin Capital Letter Z
     {0x00,0x7F,0x41,0x41,0x00},         //   ( 59)  [ - 0x005B Left Square Bracket
     {0x02,0x04,0x08,0x10,0x20},         //   ( 60)  \ - 0x005C Reverse Solidus
     {0x00,0x41,0x41,0x7F,0x00},         //   ( 61)  ] - 0x005D Right Square Bracket
     {0x04,0x02,0x01,0x02,0x04},         //   ( 62)  ^ - 0x005E Circumflex Accent
     {0x40,0x40,0x40,0x40,0x40},         //   ( 63)  _ - 0x005F Low Line
     {0x01,0x02,0x04,0x00,0x00},         //   ( 64)  ` - 0x0060 Grave Accent
     {0x20,0x54,0x54,0x54,0x78},         //   ( 65)  a - 0x0061 Latin Small Letter A
     {0x7F,0x48,0x44,0x44,0x38},         //   ( 66)  b - 0x0062 Latin Small Letter B
     {0x38,0x44,0x44,0x44,0x20},         //   ( 67)  c - 0x0063 Latin Small Letter C
     {0x38,0x44,0x44,0x48,0x7F},         //   ( 68)  d - 0x0064 Latin Small Letter D
     {0x38,0x54,0x54,0x54,0x18},         //   ( 69)  e - 0x0065 Latin Small Letter E
     {0x08,0x7E,0x09,0x01,0x02},         //   ( 70)  f - 0x0066 Latin Small Letter F
     {0x06,0x49,0x49,0x49,0x3F},         //   ( 71)  g - 0x0067 Latin Small Letter G
     {0x7F,0x08,0x04,0x04,0x78},         //   ( 72)  h - 0x0068 Latin Small Letter H
     {0x00,0x44,0x7D,0x40,0x00},         //   ( 73)  i - 0x0069 Latin Small Letter I
     {0x20,0x40,0x44,0x3D,0x00},         //   ( 74)  j - 0x006A Latin Small Letter J
     {0x7F,0x10,0x28,0x44,0x00},         //   ( 75)  k - 0x006B Latin Small Letter K
     {0x00,0x41,0x7F,0x40,0x00},         //   ( 76)  l - 0x006C Latin Small Letter L
     {0x7C,0x04,0x18,0x04,0x7C},         //   ( 77)  m - 0x006D Latin Small Letter M
     {0x7C,0x08,0x04,0x04,0x78},         //   ( 78)  n - 0x006E Latin Small Letter N
     {0x38,0x44,0x44,0x44,0x38},         //   ( 79)  o - 0x006F Latin Small Letter O
     {0x7C,0x14,0x14,0x14,0x08},         //   ( 80)  p - 0x0070 Latin Small Letter P
     {0x08,0x14,0x14,0x18,0x7C},         //   ( 81)  q - 0x0071 Latin Small Letter Q
     {0x7C,0x08,0x04,0x04,0x08},         //   ( 82)  r - 0x0072 Latin Small Letter R
     {0x48,0x54,0x54,0x54,0x20},         //   ( 83)  s - 0x0073 Latin Small Letter S
     {0x04,0x3F,0x44,0x40,0x20},         //   ( 84)  t - 0x0074 Latin Small Letter T
     {0x3C,0x40,0x40,0x20,0x7C},         //   ( 85)  u - 0x0075 Latin Small Letter U
     {0x1C,0x20,0x40,0x20,0x1C},         //   ( 86)  v - 0x0076 Latin Small Letter V
     {0x3C,0x40,0x30,0x40,0x3C},         //   ( 87)  w - 0x0077 Latin Small Letter W
     {0x44,0x28,0x10,0x28,0x44},         //   ( 88)  x - 0x0078 Latin Small Letter X
     {0x0C,0x50,0x50,0x50,0x3C},         //   ( 89)  y - 0x0079 Latin Small Letter Y
     {0x44,0x64,0x54,0x4C,0x44},         //   ( 90)  z - 0x007A Latin Small Letter Z
     {0x00,0x08,0x36,0x41,0x00},         //   ( 91)  { - 0x007B Left Curly Bracket
     {0x00,0x00,0x7F,0x00,0x00},         //   ( 92)  | - 0x007C Vertical Line
     {0x00,0x41,0x36,0x08,0x00},         //   ( 93)  } - 0x007D Right Curly Bracket
     {0x02,0x01,0x02,0x04,0x02},         //   ( 94)  ~ - 0x007E Tilde
     {0x08,0x14,0x2A,0x14,0x22},         //   ( 95) << - 0x00AB Left-Pointing Double Angle Quotation Mark
     {0x00,0x02,0x05,0x02,0x00},         //   ( 96)    - 0x00B0 Degree Sign
     {0x44,0x44,0x5F,0x44,0x44},         //   ( 97) +- - 0x00B1 Plus-Minus Sign
     {0x7E,0x20,0x20,0x10,0x3E},         //   ( 98)  u - 0x00B5 Micro Sign
     {0x22,0x14,0x2A,0x14,0x08},         //   ( 99) >> - 0x00BB Right-Pointing Double Angle Quotation Mark
     {0x30,0x48,0x45,0x40,0x20},         //   (100)  ? - 0x00BF Inverted Question Mark
     {0x22,0x14,0x08,0x14,0x22},         //   (101)  x - 0x00D7 Multiplcation Sign
     {0x08,0x08,0x2A,0x08,0x08},         //   (102)  + - 0x00F7 Division Sign
     {0x18,0x14,0x08,0x14,0x0C},         //   (103)    - 0x221E Infinity
     {0x44,0x4A,0x4A,0x51,0x51},         //   (104)  < - 0x2264 Less-Than or Equal to
     {0x51,0x51,0x4A,0x4A,0x44},         //   (105)  > - 0x2265 Greater-Than or Equal to
     {0x54,0x14,0x64,0x08,0x70},         //   (106)  .: - RF Symbol
     {0x70,0x7C,0x72,0x7C,0x70},         //   (107)  ^ - Lock symbol
     {0x70,0x5C,0x52,0x54,0x70},         //   (108)  / - Unlock symbol
     {0x0C,0x1E,0x3C,0x1E,0x0C},         //   (109)  <3 - Heart Symbol
     {0x18,0x22,0xFF,0x12,0x0C},         //   (110)  U - USB Symbol
 };
 void setStartPage(unsigned char d)
+{
     WriteCommand(0xB0|d);       // Set Page Start Address for Page Addressing Mode
                                 // Default => 0xB0 (0x00)
+}
 /* Below are functions used to configure the OLED */
 void setStartColumn(unsigned char d)
+{
     WriteCommand(0x00+d%16);    // Set Lower Column Start Address for Page Addressing Mode
     WriteCommand(0x10+d/16);    // Set Higher Column Start Address for Page Addressing Mode
                                 // Default => 0x10
+}
 /* Print a single character from font.cpp */
 void ssd1306_DrawChar(char ascii, unsigned char row, unsigned char xPos)
+{
     char *srcPointer = 0;
     unsigned char i;
     srcPointer = &fontData[(ascii-32)][0];
     setStartPage(row);
     setStartColumn(xPos);
     for(i=0;i<5;i++)
+    {
         WriteData(*srcPointer);
         srcPointer++;
+    }
     WriteData(0x00);
+}
 void ssd1306_DrawString(const char *dataPtr, unsigned char row, unsigned char xPos)
+{
     char *srcPointer;
     srcPointer = (char*)dataPtr;
     ssd1306_DrawChar(' ',row,xPos); // NBSP must be written first before the string start
     while(1)
+    {
         ssd1306_DrawChar(*srcPointer,row,xPos);
         srcPointer++;
         xPos+=6;
         if(*srcPointer == 0) break;
+    }
+}

system_stm32l1xx_4meg_extxtal.c

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