單片機LCD實驗1
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代碼如下：
//filename:global.h
#include
//#include
//#include
#define uchar unsigned char
#define uint unsigned int
//filename:T6963C.H
#define DATA_PORT P0
//-------------------------------------------
//
//------------------------------------------
sbit CD=P2^0;
sbit WRIT=P2^1;
sbit CE=P2^2;
//===========================================
//
//-------------------------------------------
void delay_lcd(char);
void write_data(char);
void write_text(char);
void write_com(char);
void clr_lcd(char,char,int);
void lcd_init_graph();
void lcd_init_text();
void text_out(char a);
int asc2lcd(int asc);
//--------------------------------------------
//
//--------------------------------------------
void write_data(char dat){
CD=0;
CE=0;
WRIT=0;
DATA_PORT=dat; //把數據送到P口
delay_lcd(1);
WRIT=1;
CE=1;
}
//--------------------------------------------
//
//--------------------------------------------
void write_text(char text){
CD=0;
CE=0;
WRIT=0;
DATA_PORT=text; //把數據送到P口
delay_lcd(1);
WRIT=1;
CE=1;
}
//--------------------------------------------
//
//--------------------------------------------
void write_com(char com){
CD=1;
CE=0;
WRIT=0;
DATA_PORT=com;
delay_lcd(1);
WRIT=1;
CE=1;
}
void clr_lcd(char x,char y,int length){
int i,place;
place=x*30+y;
write_data(place&0xff);
write_data(place/256);
write_com(0x24);
for(i=0;i
write_data(0xff);
write_com(0xb2);
}
//--------------------------------------------
//
//--------------------------------------------
void lcd_init_graph(){
write_data(0);
write_data(0);
write_com(0x42);
write_data(30);
write_data(0);
write_com(0x43);
write_com(0x80);
write_com(0x98);
}
//--------------------------------------------
//
//--------------------------------------------
void lcd_init_text(){
write_data(0);
write_data(0);
write_com(0x40);
write_data(30);
write_data(0);
write_com(0x41);
write_com(0x84);
write_com(0x94);
}
void cursor_on(){
write_com(0xA0);
write_com(0x93);
write_com(0x94);
}
void print_text(char x,char y,char a){
int place;
place=x*30+y;
write_data(place&0xff);
write_data(place/256);
write_com(0x24);
write_com(0xb0);
write_text(a);
write_com(0xb2);
}
void text_out(char a){
write_com(0xb0);
write_text(a);
write_com(0xb2);
}
void text_location(int place){
write_data(place&0xff);
write_data(place/256);
write_com(0x24);
}
void print_string(char* str){
int i;
int ch;
for(i=0;str[i]!=0;i++)
{
ch=asc2lcd(str[i]);
text_out(ch);
}
}
//--------------------------------------------
//
//--------------------------------------------
void delay_lcd(uchar t){
for(;t!=0; t--);
}
//===================================================
int asc2lcd(int asc){
uint r;
r=asc-32;
return r;
}
//latest revise:2010-2-11
//by:alex shoal
//email:alex.shoal@gmail.com
main(){
int place=5;
char ch=0x00;
lcd_init_text();
text_location(place);
print_string("Hello,china! ");
while(1);
}
關鍵詞：
單片機LCD實
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