#include "nokia_5110.h"
#include "english_6x8_pixel.h"
#include "write_chinese_string_pixel.h"

/*-----------------------------------------------------------------------
LCD_init          : 5110LCD初始化
-----------------------------------------------------------------------*/

void delay_1us(void)                 //1us延時函數
{
   unsigned int i;
  for(i=0;i<100;i++);  
}

  void delay_1ms(void)                 //1ms延時函數
  {
   unsigned int i;
   for (i=0;i<1140;i++);
  }
  
void delay_nms(unsigned int n)       //N ms延時函數
  {
   unsigned int i=0;
   for (i=0;i<n;i++)
   delay_1ms();
  }

void LCD_init(void)
  {
  // 產生一個讓LCD復位的低電平脈沖
 
	
    LCD_5110_DIR |= (0x01 << LCD_RST) + (0x01 << LCD_CE) + (0x01 << LCD_DC) 
	  				+ (0x01 << LCD_DIN) + (0x01<< LCD_CLK);
  // LCD_RST = 0;
    LCD_5110_OUT &= ~(0x01 << LCD_RST);
    delay_1us();

  // LCD_RST = 1;
   LCD_5110_OUT |= (0x01 << LCD_RST);
    
		// 關閉LCD
   //LCD_CE = 0;
    LCD_5110_OUT &= ~(0x01 << LCD_CE);
    delay_1us();
		// 使能LCD
   //LCD_CE = 1;
   LCD_5110_OUT |= (0x01 << LCD_CE);
    delay_1us();

    LCD_write_byte(0x21, 0);	// 使用擴展命令設置LCD模式
    LCD_write_byte(0xc8, 0);	// 設置偏置電壓
    LCD_write_byte(0x06, 0);	// 溫度校正
    LCD_write_byte(0x13, 0);	// 1:48
    LCD_write_byte(0x20, 0);	// 使用基本命令
    LCD_clear();	        // 清屏
    LCD_write_byte(0x0c, 0);	// 設定顯示模式，正常顯示
        
    // 關閉LCD
    LCD_5110_OUT &= ~(0x01 << LCD_CE);
  }

/*-----------------------------------------------------------------------
LCD_clear         : LCD清屏函數
-----------------------------------------------------------------------*/
void LCD_clear(void)
{
    unsigned int i;
    LCD_write_byte(0x0c, 0);	//設定顯示模式，正常顯示		
    LCD_write_byte(0x80, 0);	//設定Vop		
    for (i=0; i<504; i++)
      LCD_write_byte(0, 1);			
}

/*-----------------------------------------------------------------------
LCD_set_XY        : 設置LCD坐標函數

輸入參數：X       ：0－83
          Y       ：0－5
-----------------------------------------------------------------------*/
void LCD_set_XY(unsigned char X, unsigned char Y)
  {
    LCD_write_byte(0x40 | Y, 0);		// column
    LCD_write_byte(0x80 | X, 0);          	// row
  }

/*-----------------------------------------------------------------------
LCD_write_char    : 顯示英文字符

輸入參數：c       ：顯示的字符；
-----------------------------------------------------------------------*/
void LCD_write_char(unsigned char c)
  {
    unsigned char line;

    c -= 32;

    for (line=0; line<6; line++)
      LCD_write_byte(font6x8[c][line], 1);
  }

/*-----------------------------------------------------------------------
LCD_write_english_String  : 英文字符串顯示函數

輸入參數：*s      ：英文字符串指針；
          X、Y    : 顯示字符串的位置,x 0-83 ,y 0-5
-----------------------------------------------------------------------*/
void LCD_write_english_string(unsigned char X,unsigned char Y,char *s)
  {
    LCD_set_XY(X,Y);
    while (*s) 
      {
	 LCD_write_char(*s);
	 s++;
      }
  }
/*-----------------------------------------------------------------------
LCD_write_chinese_string: 在LCD上顯示漢字

輸入參數：X、Y    ：顯示漢字的起始X、Y坐標；
          ch_with ：漢字點陣的寬度
          num     ：顯示漢字的個數；  
          line    ：漢字點陣數組中的起始行數
          row     ：漢字顯示的行間距
測試：
	LCD_write_chi(0,0,12,7,0,0);
	LCD_write_chi(0,2,12,7,0,0);
	LCD_write_chi(0,4,12,7,0,0);	
-----------------------------------------------------------------------*/                        
void LCD_write_chinese_string(unsigned char X, unsigned char Y, 
                   unsigned char ch_with,unsigned char num,
                   unsigned char line,unsigned char row)
  {
    unsigned char i,n;
    
    LCD_set_XY(X,Y);                             //設置初始位置
    
    for (i=0;i<num;)
      {
      	for (n=0; n<ch_with*2; n++)              //寫一個漢字
      	  { 
      	    if (n==ch_with)                      //寫漢字的下半部分
      	      {
      	        if (i==0) LCD_set_XY(X,Y+1);
      	        else
      	           LCD_set_XY((X+(ch_with+row)*i),Y+1);
              }
      	    LCD_write_byte(write_chinese[line+i][n],1);
      	  }
      	i++;
      	LCD_set_XY((X+(ch_with+row)*i),Y);
      }
  }
/*-----------------------------------------------------------------------
LCD_write_byte    : 使用SPI接口寫數據到LCD

輸入參數：data    ：寫入的數據；
          command ：寫數據/命令選擇；

-----------------------------------------------------------------------*/
void LCD_write_byte(unsigned char dat, unsigned char command)
  {
    unsigned char i;
	LCD_5110_OUT &= ~(0x01 << LCD_CE);	// msp430
    
    if (command == 0)
     // PORTB &= ~LCD_DC ;	        // 傳送命令
	//     LCD_DC = 0;
	  LCD_5110_OUT &= ~(0x01 << LCD_DC);
    else
     // PORTB |= LCD_DC ;		        // 傳送數據
    // LCD_DC = 1;
	 LCD_5110_OUT |= (0x01 << LCD_DC);
		for(i=0;i<8;i++)
		{
			if(dat&0x80)
				//SDIN = 1;
			   LCD_5110_OUT |= (0x01 << LCD_DIN);
			else
				//SDIN = 0;
			   LCD_5110_OUT &= ~(0x01 << LCD_DIN);
			//SCLK = 0;
			LCD_5110_OUT &= ~(0x01 << LCD_CLK);
			dat = dat << 1;
			//SCLK = 1;
			LCD_5110_OUT |= (0x01 << LCD_CLK);
		}
   // SPDR = data;			// 傳送數據到SPI寄存器

    //while ((SPSR & 0x80) == 0);         // 等待數據傳送完畢
	
    //PORTB |= LCD_CE ;			// 關閉LCD
    // LCD_CE = 1;
	 LCD_5110_OUT |= (0x01 << LCD_CE);
  }