lcd.c

132*64点阵式液晶初始化程序

void lcd_clean(unsigned char start_seg,unsigned char end_seg,unsigned char start_page,unsigned char end_page)
{
    unsigned char i=0,j=0;
//clear screen
    for(j=start_page;j<end_page+1;j++)
    {
        //lcd_data(0x00);
        lcd_ins(0xb0+j);
        lcd_ins(0x00+(start_seg&0x0f));
        lcd_ins(0x10+((start_seg&0xf0)>>4));
        for(i=0;i<end_seg;i++)
        {    
            lcd_data(0x00);
        }
    }
}
void lcd_ins(unsigned char ins)
{//WD
        REG32(GPDR) &= ~0x00001000;
//A0
        REG32(GPDR) &= ~0x00000400;
//cs
 //       REG32(GPDR) &= ~0x00200000;       
//RD
        REG32(GPDR) |= 0x00000800;
            
        //for(i=0;i<8;i++)
        //{
        //    set_io_output(i);//set  d4-d7 can be read
        //}    
        REG32_GPDR &= 0xffffff00;
        REG32_GPDR |= ins;
        //RD
        REG32(GPDR) &= ~0x00000800;
        //cs->h
  //      REG32(GPDR) |= 0x00200000;
        //A0
        REG32(GPDR) |= 0x00000400;
        
           //WD
        REG32(GPDR) |= 0x00001000;         
}
void lcd_data(unsigned char data)
{//WD
        REG32(GPDR) &= ~0x00001000;
//A0
        REG32(GPDR) |= 0x00000400;
//cs
 //       REG32(GPDR) &= ~0x00200000;       
//RD
        REG32(GPDR) |= 0x00000800;
            
        //for(i=0;i<8;i++)
        //{
        //    set_io_output(i);//set  d4-d7 can be read
        //}    
        REG32_GPDR &= 0xffffff00;
        REG32_GPDR |= data;
        //RD
        REG32(GPDR) &= ~0x00000800;
        //cs->h
  //      REG32(GPDR) |= 0x00200000;
        //A0
        REG32(GPDR) &= ~0x00000400;
        
           //WD
        REG32(GPDR) |= 0x00001000;
        
}
void lcd_dis_init()
{
    unsigned char i,j;                           //0x24    0x34                     //0xc8
    unsigned char buf[15] = {0xa1,0xB0,0xa2,0x2F,0x23,0x81,0x37,0x10,0x00,0xA6,0xAF,0XC8,0xF8,0x00,0xa5}; 

    //CS GPIO 21
    REG32(GPAUR) &= 0xfffff3ff;
    REG32(GPDIR) |= 0x00200000;
        
    //RST GPIO 13 
    REG32(GPALR) &= 0xf3ffffff;
    REG32(GPDIR) |= 0x00002000;
    
    //A0 GPIO 10
    REG32(GPALR) &= 0xffcfffff;
    REG32(GPDIR) |= 0x00000400;
    
    //WR GPIO 12
    REG32(GPALR) &= 0xfcffffff;
    REG32(GPDIR) |= 0x00001000;
    
    //RD GPIO 11
    REG32(GPALR) &= 0xff3fffff;
    REG32(GPDIR) |= 0x00000800;
    
   	// set up DB[0:7] func 1
    REG32(GPALR) &= 0xFFFF0000;
    REG32(GPDIR) |= 0x000000ff;
    
    //CS -> L
    REG32(GPDR) &= ~0x00200000;
    for(j=0;j<14;j++)
    {
        lcd_ins(buf[j]);
    }
    //lcd_clean(132);
}
void lcdini()
{
    unsigned char i,j;                           //0x24    0x34                     //0xc8
    unsigned char buf[15] = {0xa1,0xB0,0xa2,0x2F,0x23,0x81,0x37,0x10,0x00,0xA6,0xAF,0XC8,0xF8,0x00,0xa5}; 

    //CS GPIO 21
    REG32(GPAUR) &= 0xfffff3ff;
    REG32(GPDIR) |= 0x00200000;
        
    //RST GPIO 13 
    REG32(GPALR) &= 0xf3ffffff;
    REG32(GPDIR) |= 0x00002000;
    
    //A0 GPIO 10
    REG32(GPALR) &= 0xffcfffff;
    REG32(GPDIR) |= 0x00000400;
    
    //WR GPIO 12
    REG32(GPALR) &= 0xfcffffff;
    REG32(GPDIR) |= 0x00001000;
    
    //RD GPIO 11
    REG32(GPALR) &= 0xff3fffff;
    REG32(GPDIR) |= 0x00000800;
    
   	// set up DB[0:7] func 1
    REG32(GPALR) &= 0xFFFF0000;
    REG32(GPDIR) |= 0x000000ff;
    
    //CS -> L
    REG32(GPDR) &= ~0x00200000;
    //RST -> H
    REG32(GPDR) |= 0x00002000;  
    delayns(60000);
    //RST -> L
    REG32(GPDR) &= ~0x00002000;  
    
    delayns(60000);
    
    //RST -> H
    REG32(GPDR) |= 0x00002000;  
    //while(1);
    //delayns(10000);
    //while(1)   
    //{
    for(j=0;j<14;j++)
    {
        lcd_ins(buf[j]);
    }
    //lcd_clean(132);
}