Nokia 5110液晶駆動

ハードウェアインタフェース:

sbit LCD_RST=P0^0;
sbit LCD_CE=P0^1;
sbit LCD_DC=P0^2;
sbit LCD_BL=P0^6;
sbit SDIN=P0^3;
sbit SCLK=P0^4;

ドライバ(中国語または画像の元の配列は提供されていません):

void delay_1us(void);
void delay_1ms(void);
void delay_nms(unsigned int n);
void LCD_init(void);
void LCD_clear(void);
void LCD_set_XY(unsigned char X, unsigned char Y);
void LCD_write_char(unsigned char c);
void LCD_write_english_string(unsigned char X,unsigned char Y,char *s);
void LCD_write_chinese_string(unsigned char X, unsigned char Y, 
                              unsigned char ch_with,unsigned char num,
                              unsigned char line,unsigned char row,char (*s)[24]);
void LCD_draw_bmp_pixel(unsigned char X,unsigned char Y,unsigned char *map,
                  		unsigned char Pix_x,unsigned char Pix_y);
void LCD_write_byte(unsigned char dat, unsigned char command);
idata uchar  itoc[50],operate;




void delay_1us(void)                 //1us    
  {
   unsigned int i;
  for(i=0;i<1000;i++);
  }

void delay_1ms(void)                 //1ms    
  {
   unsigned int i;
   for (i=0;i<110;i++);
  }
  
void delay_nms(unsigned int n)       //N ms    
  {
   unsigned int i=0;
   for (i=0;i<n;i++)
   delay_1ms();
  }


void LCD_init(void)
  {
            //      LCD        
   LCD_RST = 0;
    delay_1us();
   LCD_RST = 1;
		//   LCD
   LCD_CE = 0;
    delay_1us();
		//   LCD
   LCD_CE = 1;
    delay_1us();

    LCD_write_byte(0x21, 0);	//         LCD  
    LCD_write_byte(0xc8, 0);	//       
    LCD_write_byte(0x06, 0);	//     
    LCD_write_byte(0x13, 0);	// 1:48
    LCD_write_byte(0x20, 0);	//       
    LCD_clear();	        //   
    LCD_write_byte(0x0c, 0);	//       ，    
        
           //   LCD
   LCD_CE = 0;
  }

/*-----------------------------------------------------------------------
LCD_clear         :    
-----------------------------------------------------------------------*/
void LCD_clear(void)
  {
    unsigned int i;

    LCD_write_byte(0x0c, 0);			
    LCD_write_byte(0x80, 0);			

    for (i=0; i<504; i++)
      LCD_write_byte(0, 1);			
  }

/*-----------------------------------------------------------------------
LCD_set_XY        :   LCD    

    ：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    :       

    ：c       ：     ；
-----------------------------------------------------------------------*/
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  :          

    ：*s      ：       ；
          X、Y    :         ,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:  LCD     

    ：X、Y    ：       X、Y  ；
          ch_with ：       
          num     ：       ；  
          line    ：            
          row     ：        
  ：
	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,char (*chinese)[24])
  {
    unsigned char i,n;
    
    LCD_set_XY(X,Y);                             //      
    
    for (i=0;i<num;)
      {
      	for (n=0; n<ch_with*2; n++)              //     
      	  { 
      	    if (n==ch_with)                      //        
      	      {
      	        if (i==0) LCD_set_XY(X,Y+1);
      	        else
      	           LCD_set_XY((X+(ch_with+row)*i),Y+1);
              }
      	    LCD_write_byte(chinese[line+i][n],1);
      	  }
      	i++;
      	LCD_set_XY((X+(ch_with+row)*i),Y);
      }
  }
  


/*-----------------------------------------------------------------------
LCD_draw_map      :       

    ：X、Y    ：       X、Y  ；
          *map    ：      ；
          Pix_x   ：    （ ）
          Pix_y   ：    （ ）
-----------------------------------------------------------------------*/
void LCD_draw_bmp_pixel(unsigned char X,unsigned char Y,unsigned char *map,
                  unsigned char Pix_x,unsigned char Pix_y)
  {
    unsigned int i,n;
    unsigned char row;
    
    if (Pix_y%8==0) row=Pix_y/8;      //        
      else
        row=Pix_y/8+1;
    
    for (n=0;n<row;n++)
      {
      	LCD_set_XY(X,Y);
        for(i=0; i<Pix_x; i++)
          {
            LCD_write_byte(map[i+n*Pix_x], 1);
          }
        Y++;                         //  
      }      
  }

/*-----------------------------------------------------------------------
LCD_write_byte    :   SPI      LCD

    ：data    ：     ；
          command ：   /    ；
-----------------------------------------------------------------------*/
void LCD_write_byte(unsigned char dat, unsigned char command)
  {
    unsigned char i;
    //PORTB &= ~LCD_CE ;		        //   LCD
    LCD_CE = 0;
    
    if (command == 0)
     // PORTB &= ~LCD_DC ;	        //     
     LCD_DC = 0;
    else
     // PORTB |= LCD_DC ;		        //     
     LCD_DC = 1;
		for(i=0;i<8;i++)
		{
			if(dat&0x80)
				SDIN = 1;
			else
				SDIN = 0;
			SCLK = 0;
			dat = dat << 1;
			SCLK = 1;
		}
   // SPDR = data;			//      SPI   

    //while ((SPSR & 0x80) == 0);         //         
	
    //PORTB |= LCD_CE ;			//   LCD
     LCD_CE = 1;
  }