CYW-B320240D图形点阵液晶模块C语言驱动程序范例【驰宇微】

#include

#include

#include

void delay1ms(unsigned int count) 

{

    int i,j;

    for(i=0;i<=count;i++)

      for(j=0;j<=583;j++);

}

void lcd_reset(void)

{

    lcd_RES = 1;

    delay1ms(2);

    lcd_SEL1 = 0;

    lcd_A0 = 0;

    lcd_WR = 1;

    lcd_RD = 1;

    lcd_CS = 1;

    lcd_RES = 0;

    delay1ms(100);

    lcd_RES = 1;

    delay1ms(500);

}   

void lcd_initial(void)

{

   lcd_cmdwrite(0x40);       //SYSTEM SET

   lcd_datawrite(0x30);      //p1

   lcd_datawrite(0x87);      //p2   

   lcd_datawrite(0x07);      //p3   

   lcd_datawrite(0x27);      //p4   

   lcd_datawrite(0x37);      //p5  

   lcd_datawrite(0xef);      //p6   

   lcd_datawrite(0x28);      //p7   

   lcd_datawrite(0x00);      //p8   

   lcd_cmdwrite(0x44);       //SCROLL

   lcd_datawrite(0x00);      //sa1-L

   lcd_datawrite(0x00);      //sa1-H

   lcd_datawrite(0xf0);      //sL1    

   lcd_datawrite(0x80);      //sa2-L   

   lcd_datawrite(0x25);      //sa2-H  

   lcd_datawrite(0xf0);      //sL2  

   lcd_datawrite(0x00);      //sa3-L  

   lcd_datawrite(0x3a);      //sa3-H     

   lcd_datawrite(0x00);      //sa4-L

   lcd_datawrite(0x3a);      //sa4-H

   lcd_cmdwrite(0x5a);       //HDOT SCR

   lcd_datawrite(0x00); 

   lcd_cmdwrite(0x58);       //DISP OFF

   lcd_datawrite(0x54);        

   lcd_cmdwrite(0x5d);       //CSR FORM

   lcd_datawrite(0x00);      //CRX

   lcd_datawrite(0x00);      //CRY

   lcd_cmdwrite(0x59);       //DISP ON

   lcd_datawrite(0x54);      

   lcd_cmdwrite(0x5b);       

   lcd_datawrite(0x00);      

}

void lcd_cmdwrite(unsigned char cmdx)

{   

    lcd_SEL1 = 0; 

    lcd_CMD = cmdx;

    lcd_A0 = 1;

    lcd_CS = 0;

    lcd_WR = 0;

    lcd_WR = 1;

    lcd_CS = 1;

//lcd_A0 = 0;

}

void lcd_datawrite(unsigned char datax)

{   

   lcd_chkbusy();

    lcd_SEL1 = 0;

    lcd_A0 = 0;

    lcd_DATA = datax;

    lcd_CS = 0;

    lcd_WR = 0;

    lcd_WR = 1;

    lcd_CS = 1;

    lcd_A0 = 1;

}

unsigned char lcd_cmdread(void)

{   

    unsigned char address_cmd;

    lcd_DATA=0xff;

    lcd_SEL1 = 0;

    lcd_A0 = 0;

    lcd_CS = 0;

    lcd_RD = 0;

    address_cmd = lcd_DATA;

    lcd_RD = 1;

    lcd_CS = 1;

    lcd_A0 = 0;

  return(address_cmd);

}

unsigned char lcd_dataread(void)

{

    char address_data;

    lcd_DATA=0xff;

    lcd_SEL1 = 0;

    lcd_A0 = 1;

    lcd_CS = 0;

    lcd_RD = 0;

    address_data = lcd_DATA;

    lcd_RD = 1;

    lcd_CS = 1;

    lcd_A0 = 1;

 return(address_data);

}

void lcd_cursorxy(unsigned char x,unsigned char y)

{

   //lcd_chkbusy();

    lcd_cmdwrite(0x46);

    lcd_datawrite(x);

    lcd_datawrite(y);

}

void lcd_chkbusy(void)

{

     unsigned char busy;

 do

 {

    busy =(lcd_cmdread() & 0x40);

 }while(busy);  

}

void lcd_showbig(unsigned char *text,unsigned int x)

{ 

    while(*text != '\0')          

{

    lcd_datawrite(*text);

    ++text; 

   delay1ms(x);

    }

}

void lcd_clear(void)

{   

    unsigned int i;

    lcd_cursorxy(0x00,0x00);  

    lcd_cmdwrite(0x42);

     for(i=0;i<0x7fff;i++)     

       lcd_datawrite(0x00);

}

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