lcd.c

这里有很多我自己做的凌阳单片机源程序

#include<spce061a_chf.h>
#define	Uint	unsigned int
typedef struct
{
	Uint bit0  : 1;
	Uint bit1  : 1;
	Uint bit2  : 1;
	Uint bit3  : 1;
	Uint bit4  : 1;
	Uint bit5  : 1;
	Uint bit6  : 1;
	Uint bit7  : 1;
	Uint bit8  : 1;
	Uint bit9  : 1;
	Uint bit10 : 1;
	Uint bit11 : 1;
	Uint bit12 : 1;
	Uint bit13 : 1;
	Uint bit14 : 1;
	Uint bit15 : 1;
}Bit;

typedef struct
{
	Uint bytel  : 8;
	Uint byteh  : 8;
}Byte;
	
typedef union
{
	Bit bit;
	Byte byte;
	Uint port;
}UNport;


#define PA    			((volatile UNport *)(0x7000))
#define PA_Buffer		((volatile UNport *)(0x7001))
#define PA_Dir   		((volatile UNport *)(0x7002))
#define PA_Attrib   	((volatile UNport *)(0x7003))
#define	PA_Latch   		((volatile UNport *)(0x7004))
#define	PB    			((volatile UNport *)(0x7005))
#define	PB_Buffer   	((volatile UNport *)(0x7006))
#define	PB_Dir   		((volatile UNport *)(0x7007))
#define	PB_Attrib   	((volatile UNport *)(0x7008))
#define	P0_0		PA->bit.bit0
#define	P0_1		PA->bit.bit1
#define	P0_2		PA->bit.bit2
#define	P0_3		PA->bit.bit3
#define	P0_4		PA->bit.bit4
#define	P0_5		PA->bit.bit5
#define	P0_6		PA->bit.bit6
#define	P0_7		PA->bit.bit7
#define	P0_8		PA->bit.bit8
#define	P0_9		PA->bit.bit9
#define	P0_10		PA->bit.bit10
#define	P0_11		PA->bit.bit11
#define	P0_12		PA->bit.bit12
#define	P0_13		PA->bit.bit13
#define	P0_14		PA->bit.bit14
#define	P0_15		PA->bit.bit15
#define	P1_0		PB->bit.bit0
#define	P1_1		PB->bit.bit1
#define	P1_2		PB->bit.bit2
#define	P1_3		PB->bit.bit3
#define	P1_4		PB->bit.bit4
#define	P1_5		PB->bit.bit5
#define	P1_6		PB->bit.bit6
#define	P1_7		PB->bit.bit7
#define	P1_8		PB->bit.bit8
#define	P1_9		PB->bit.bit9
#define	P1_10		PB->bit.bit10
#define	P1_11		PB->bit.bit11
#define	P1_12		PB->bit.bit12
#define	P1_13		PB->bit.bit13
#define	P1_14		PB->bit.bit14
#define	P1_15		PB->bit.bit15

void write_command(unsigned int);//写命令函数
void write_data(unsigned int);//写数据函数
unsigned int read_data();//读出给定地址的数据
void check_busy(void);//检测busy信号的函数
void lce_intit();//lcd初始化函数
void lcd_set();//lcd显示格式的设置
void delay15(void);//延时15ms
void delay5(void);//延时5ms
unsigned int value1[16]="AAyeguiyou002AAA";
unsigned int value2[16]="AAAAAAAAAAAAAAA0";
int main()
{	
	unsigned int k;
	unsigned int q;
	lcd_intit();	
	lcd_set();
	
	check_busy();
	write_command(0x80);//写入显示的地址第一行
	for(k=0;k<16;k++)//写入数据
	{
		check_busy();
		write_data(value1[k]);
	}
	/*check_busy();
	write_data(0x41);*/
	check_busy();
	write_command(0xc0);//写入显示的地址地二行
	for(k=0;k<16;k++)//写入数据
	{
		check_busy();
		write_data(value2[k]);
	}
	/*check_busy();
	write_command(0xc0);//写入显示的地址地二行
	check_busy();
	write_data(0x41);*/
	check_busy();
	write_command(0x89);//要读出00x88地址的数据；
	//check_busy();
	q=read_data();	
	while(1)
	{
		Watchdog_Clear();
		
	}
}
void lcd_intit(void)
{
	delay15();
	write_command(0x0038);
	
	delay5();
	write_command(0x0038);
	
	delay5();
	write_command(0x0038);
}
void lcd_set(void)
{
	check_busy();
	write_command(0x0038);//显示模式的设置
	check_busy();
	write_command(0x0008);//显示关闭*/
	check_busy();
	write_command(0x00001);	//显示清屏
	check_busy();
	write_command(0x0006);//显示光标移动设置
	check_busy();
	write_command(0x000c);//显示开及光标设置
}
void write_command(unsigned int command)
{	
	Set_IOA_Dir(0x00ff);
	Set_IOA_Attrib(0x00ff);
	Set_IOA_Data(command);
	
	Set_IOB_Dir(0x0007);
	Set_IOB_Attrib(0x0007);
	P1_0=0;//rs=0
	P1_1=0;//rw=0
	P1_2=0;//E=0
	asm("nop");	
	asm("nop");
	P1_2=1;//E=1;
	asm("nop");	
	asm("nop");
}
void write_data(unsigned int data)
{
	Set_IOA_Dir(0x00ff);
	Set_IOA_Attrib(0x00ff);
	Set_IOA_Data(data);	
	
	Set_IOB_Dir(0x0007);
	Set_IOB_Attrib(0x0007);
	P1_0=1;//rs=1	
	P1_1=0;//rw=0
	P1_2=0;//E=0
	asm("nop");
	asm("nop");
	P1_2=1;//E=1;
	asm("nop");	
	asm("nop");	
}
unsigned int read_data(void)
{
	unsigned int add;
	Set_IOA_Dir(0x0000);
	Set_IOA_Attrib(0x00ff);
	Set_IOA_Data(0x00ff);//下拉式输入	
	
	Set_IOB_Dir(0x0007);
	Set_IOB_Attrib(0x0007);
	P1_0=1;//rs=1	
	P1_1=0;//rw=1
	P1_2=0;//E=0
	asm("nop");
	asm("nop");
	P1_2=1;//E=1;
	asm("nop");	
	asm("nop");	
	add=Get_IOA_Data();
	return(add);
}	
void check_busy()
{	
	unsigned int c;
	
	Set_IOA_Dir(0x0000);
	Set_IOA_Attrib(0x00ff);
	Set_IOA_Data(0x00ff);//下拉式输入	
		
	do
	{
		Watchdog_Clear();
		
		Set_IOB_Dir(0x0007);
		Set_IOB_Attrib(0x0007);
		P1_0=0;//rs=0
		P1_1=1;//rw=1
		P1_2=0;//E=0
		asm("nop");
		asm("nop");
		P1_2=1;//E=1;	
		asm("nop");	
		asm("nop");		
		c=Get_IOA_Data();
		c&=0x0080;	
	}while(c==0x0080);	
}
void delay15()
{
	unsigned int i,j;
	i=2;	
	while(i--)
	{
		j=0x4fff;
		while(j--)
		{
			Watchdog_Clear();
		}
	}
}
void delay5()
{
	unsigned int i,j;
	i=0;		
	while(i--)
	{
		j=0x4fff;
		while(j--)
		{
			Watchdog_Clear();
		}
	}
}