9.c

刚学时编的小程序

#include <AT89X51.h>
#include"absacc.h"

charmess[40];

delay(int t)
{
 	int i, j;
	for(i=0;i<t;i++)
		for(j=0;j<10;j++);
}

main()
{

	init_lcd();
	test_lcd();
	while(1){};
}

write_com(unsigned char c)
{
	unsigned char in;
		while(1)
		{
			in=lcd_com;
			if((in&0x80)==0)break;
		}
		lcd_com=c;
}

write_data(unsigned char d)
{
	unsigned char in;
		while(1)
		{
			in=lcd_com;
			if((in&0x80)==0)break;
		}
		lcd_data=d;
}

init_lcd()
{
	write_com(0x3c);
	write_com(0x0e);
	write_com(0x06);
	write_com(0x01);
	delay(100);
}

print(char line,char *str)
{
	char i;
	if(line==1)
	{
		write_com(0x80);
		for(i=0;i<24;i++)
		write_data('');
		write_com(0x80);
	}
	else
	{
		write_com()0xc0	;
		for(i=0;i<24;i++)
		write_data('')
		write_com(0xc0);
	 }
	i=0;
	do
	{
		write_data(*str++);
	}
	while(*str!='\0');
}

test_lcd()
{
	 char i;
	 sprintf(mess,"P51_PCB LCD TEST>>>>>>>>>");
	 print(1,mess);
	 write_com(0xc0);
	 for(i=0;i<10;i++)
	 write_data(i+0x30)	;
	 delay(1500) ;
	 sprintf(mess,"TEST OVER >>>>>>>>");
	 print(2,mess);
}