#include "stm32l100c_discovery.h"

#include "ssd1306.h"

// Write command to OLED

void WriteCommand(unsigned char command)

{

  SSD_A0_Low();

  SPI_SendByte(command);

  SPI_Wait();

}

// Write data to OLED

void WriteData(unsigned char data)

{

  SSD_A0_High();

  SPI_SendByte(data);

  SPI_Wait();

}

// Initialize OLED

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 

}

// 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