?? lcd.c
字號:
#include "includehfile.h"
/*------------------初始化-----------------*/
void init_lcd (void)
{
LCDDIR |= (cs+std+sclk);//cs、sclk、std腳為輸出
LCDOUT &=~cs;//cs初始為低電平
wr_lcd (comm,0x30); /*30---基本指令動作*/
wr_lcd (comm,0x01); /*清屏,地址指針指向00H*/
LCDdelay(80);
wr_lcd (comm,0x06); /*光標(biāo)的移動方向*/
wr_lcd (comm,0x0c); /*開顯示,關(guān)游標(biāo)*/
}
/*---------------顯示漢字或字符----------------*/
void chn_disp (uchar const *chn)
{
uchar i,j;
wr_lcd (comm,0x30);
wr_lcd (comm,0x80);
j=0;
for (i=0;i<16;i++)
wr_lcd (dat,chn[j*16+i]);
wr_lcd (comm,0x90);
j=1;
for (i=0;i<16;i++)
wr_lcd (dat,chn[j*16+i]);
}
/*----------------顯示圖形-----------------*/
void img_disp (uchar const *img)
{
uchar i,j;
for(j=0;j<32;j++)
{
for(i=0;i<8;i++)
{
wr_lcd (comm,0x34);
wr_lcd (comm,y+j);
wr_lcd (comm,x+i);
wr_lcd (comm,0x30);
wr_lcd (dat,img[j*16+i*2]);
wr_lcd (dat,img[j*16+i*2+1]);
}
}
wr_lcd (comm,0x36);
}
/*--------------顯示點(diǎn)陣----------------*/
void lat_disp (uchar data1,uchar data2)
{
uchar i,j;
for(j=0;j<16;j++)
{
for(i=0;i<8;i++)
{
wr_lcd (comm,0x34);
wr_lcd (comm,y+j*2);
wr_lcd (comm,x+i);
wr_lcd (comm,0x30);
wr_lcd (dat,data1);
wr_lcd (dat,data1);
}
for(i=0;i<8;i++)
{
wr_lcd (comm,0x34);
wr_lcd (comm,y+j*2+1);
wr_lcd (comm,x+i);
wr_lcd (comm,0x30);
wr_lcd (dat,data2);
wr_lcd (dat,data2);
}
}
wr_lcd (comm,0x36);
}
/*-----------------------------------------------*/
//當(dāng)data1=0xff,data2=0xff時,在x0,y0處反白顯示16xl*yl.
void con_disp (uchar data1,uchar data2,uchar x0,uchar y0,uchar xl,uchar yl)
{
uchar i,j;
for(j=0;j<yl;j++)
{
for(i=0;i<xl;i++)
{
wr_lcd (comm,0x34);
wr_lcd (comm,y0+j);
wr_lcd (comm,x0+i);
wr_lcd (comm,0x30);
wr_lcd (dat,data1);
wr_lcd (dat,data2);
}
}
wr_lcd (comm,0x36);
}
/*--------------清DDRAM------------------*/
void clrram (void)
{
wr_lcd (comm,0x30);
wr_lcd (comm,0x01);
LCDdelay (120);
}
/*---------------------------------------*/
void wr_lcd (uchar dat_comm,uchar content)
{
uchar a,i,j,temp;
LCDdelay (40);
a=content;
LCDOUT |= cs;//cs=1;
LCDOUT &= ~sclk;//sclk=0;
LCDOUT |= std;//std=1;
for(i=0;i<5;i++)
{
LCDOUT |= sclk;;//sclk=1;
LCDOUT &= ~sclk;//sclk=0;
}
LCDOUT &=~ std;//std=0;
LCDOUT |= sclk;//sclk=1;
LCDOUT &=~ sclk;//sclk=0;
if(dat_comm)
LCDOUT |= std;//std=1; //data
else
LCDOUT &=~ std;//std=0; //command
LCDOUT |= sclk;//sclk=1;
LCDOUT &=~ sclk;//sclk=0;
LCDOUT &=~ std;//std=0;
LCDOUT |= sclk;//sclk=1;
LCDOUT &=~ sclk;//sclk=0;
for(j=0;j<2;j++)
{
for(i=0;i<4;i++)
{
temp=a;
temp=temp&0x80;
if(temp==0)//std=最高位
LCDOUT &=~ std;
else
LCDOUT |= std;
a=a<<1;
//std=CY;
LCDOUT |= sclk;//sclk=1;
LCDOUT &=~ sclk;//sclk=0;
}
LCDOUT &=~ std;//std=0;
for(i=0;i<4;i++)
{
LCDOUT |= sclk;//sclk=1;
LCDOUT &=~ sclk;//sclk=0;
}
}
}
/*---------------------------------------*/
void LCDdelay (uint us) //delay time
{
while(us--);
}
void LCDdelay1 (uint ms)
{
uint i,j;
for(i=0;i<ms;i++)
for(j=0;j<15;j++)
LCDdelay(1);
}
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