main.c

在LPC2124上用Keil仿真LCD程序

#include"LPC2124.h"
#include"config.h"
void writecmd(uint8 cmd,uint8 busyc);
void writedata(uint8 dat);
void display1(uint8 *str1);
void display2(uint8 *str2);
void display3(uint8 key);
void delay1(uint32 count);
void lcdinit(void);
void systeminit(void);
#define RS 0x00000100;
#define RW 0x00000200;
#define E  0x00001000;
unsigned char str11[]={"I Love You"}; 
unsigned char str22[]={"MM"};
int main(void)
{
	systeminit();
	lcdinit();
	display1(str11);
	display2(str22);
	while(1)  ;
  
		
			
		
		
}

void systeminit(void)
{
	PINSEL0=0x00000000;
	PINSEL1=0x00000000;
 	IO0DIR=0x000013ff;	

}
void lcdinit(void)
{
//	delay(800);				//可要可不要
//	writecmd(0x38,0);
//	delay(400);
//	writecmd(0x38,0);
//	delay(400);
//	writecmd(0x38,0);
//	delay(400);
	writecmd(0x38,1);
	writecmd(0x08,1);
	writecmd(0x01,1);
	writecmd(0x06,1);
	writecmd(0x0c,1);
}
void display1(uint8 *str1)
{
	uint8 x=0;
  
	while(*str1	!='\0')
	{
		x|=0x80;
		writecmd(x,1);
		writedata(*str1);
		++str1;
		++x;	
	}	

}
void display2(uint8 *str2)
{
	uint8 y=0;

	while(*str2!='\0')
	{
		y|=0xc0;
		writecmd(y,1);
		writedata(*str2);
		++str2;
		y++;	
	}		
}

void delay1(uint32 count)
{
	unsigned long i;
	for(i=0;i<count;i++);

}
void writecmd(uint8 cmd,uint8 busyc)
{

	IO0CLR=E;
	IO0CLR=0xff;
	IO0SET=cmd;
	IO0CLR=RS;
	IO0CLR=RW;
	IO0SET=E;
	delay1(4000);
	IO0CLR=E;
	if(busyc)
	{
		IO0DIR=0x001300;
		do
		{
			delay1(4000);
			IO0CLR=RS;
			IO0SET=RW; 
			IO0SET=E;
			delay1(4000);
			IO0CLR=E;	
		}
		while(IO0PIN & 0x00000080!=0);
		IO0DIR=0x0013FF; 
	 }
}
void writedata(unsigned char dat) 
{
	IO0CLR=E;
	IO0CLR=0xff;
	IO0SET=dat;
	IO0SET=RS;
	IO0CLR=RW;
	IO0SET=E;
	delay1(4000);
	IO0CLR=E;
	IO0DIR=0x00001300;
		do
		{
			delay1(4000);
			IO0CLR=RS;
			IO0SET=RW; 
			IO0SET=E;
			delay1(4000);
			IO0CLR=E;	
		}
		while(IO0PIN & 0x00000080!=0);
		IO0DIR=0x000013FF; 
}