电子产品世界

sbit CS=P1^0; //RS
sbit SID=P1^1; //RW
sbit SCLK=P1^2; //E
sbit CH = P1^3; //PSB
sbit RST=P1^4;
void delay(unsigned int t);
void sendbyte(unsigned char zdata);
void write_com(unsigned char cmdcode);
void write_data(unsigned char Dispdata);
void lcdinit();
void lcd_char(unsigned char code *s);
unsigned int lcd_data(int g);
void Test();
void delay(unsigned int t)
{
unsigned int i,j;
for(i=0; ifor(j=0; j<10; j++);
}

void sendbyte(unsigned char zdata)
{
unsigned int i;
for(i=0; i<8; i++)
{
if((zdata << i) & 0x80)
{
SID = 1;
}
else
{
SID = 0;
}
SCLK = 0;
SCLK = 1;
}
}

void write_com(unsigned char cmdcode)
{
CS = 1;
sendbyte(0xf8);
sendbyte(cmdcode & 0xf0);
sendbyte((cmdcode << 4) & 0xf0);
delay(2);
}

void write_data(unsigned char Dispdata)
{
CS = 1;
sendbyte(0xfa);
sendbyte(Dispdata & 0xf0);
sendbyte((Dispdata << 4) & 0xf0);
delay(2);
}

void lcdinit()
{
RST = 0;
delay(100);
RST = 1;
delay(20000);
write_com(0x30);
delay(50);
write_com(0x0c);
delay(50);
}

void lcd_char(unsigned char code *s)
{
while(*s > 0)
{
write_data(*s);
s++;
delay(50);
}
}

unsigned int lcd_data(int g)
{
unsigned int thousand,handred,ten,ge,databit;
databit=0;
thousand=(int)(g/1000);handred=((int)(g/100))%10;ten=((int)(g/10))%10;ge=((int)(g))%10;
if(g<0)write_data(0x2d);databit++;
if(thousand)write_data(thousand+0x30);databit++;
if(handred)write_data(handred+0x30);databit++;
if(ten)write_data(ten+0x30);databit++;
write_data(ge+0x30);databit++;
if(databit%2)return databit/2;
else return (int)(databit/2)+1;
}

void Test()
{ unsigned int temp;
write_com(0x03);
delay(50);

write_com(0x80);
lcd_char("电子产品世界");
write_com(0x90);
lcd_char("发帖换工具书");
write_com(0x88);
lcd_char("ulan");
}