graph.c

此程序实现无线信标定位

void loc_xy(unsigned char X,unsigned char Y);
void line(unsigned char pos);
void cls_grap(void);

void cls_grap(void);
extern unsigned char code line_code[16][6];
extern void send_i(unsigned char comm);
extern void send_d(unsigned char data_in);

//写GDRAM地址
void loc_xy(unsigned char X,unsigned char Y)
{
	send_i(Y); 
	send_i(X);
}

/*画直线
当目标位于1、3象限时，直线斜率为45度，pos = 1, 由（0x94,0x9f)开始从下向上画
当目标位于2、4象限时，直线斜率为135度，pos = 0,由(0x8c,0x80)开始从上向下画
*/
void line(bit pos)
{
	unsigned char *p;
	unsigned char x,y,t_x,t_y;
	p = line_code;	
	if(pos)
 		y = 0x9F;
	else
		y = 0x80;
	cls_grap();
	for(t_y = 0;t_y < 32;t_y ++)
	{
		if(t_y < 16)
		{	
			if(!pos)
			x = 0x8C;	
			else
			x = 0x94;
			
			loc_xy(x,y);
			for(t_x = 0;t_x < 6;t_x ++)
			{
				send_d(*p);
				p++;
			}
		}
		else
		{	
			if(t_y == 16)
			p = line_code;
			
			if(!pos)
			x = 0x91;	
			else
			x = 0x89;

			loc_xy(x,y);
			for(t_x = 0;t_x < 6;t_x++)
			{
				send_d(*p);
				p++;
			}
		}
		if(pos)
			y --;
		else
			y ++;
	}
	send_i(0x30);
}
	
/********************扩充指令集清屏子程序********************/
void cls_grap()
{
	unsigned char Disp_Page;
	unsigned char i,j;
	send_i(0x34);
	send_i(0x36);
	for(i = 0; i < 64; i ++)/*共32页*/
	{
		Disp_Page = i | 0x80;/*设置页地址*/
		loc_xy(0x80,Disp_Page);/*送入页地址*//*送入起始列地址*/
		for(j = 0;j < 32;j ++)
		{
			send_d(0x00);/*清屏*/
		}
	}
}
/*
//画点
void dot(unsigned char x,unsigned char y,unsigned char state)
{
	unsigned char LCD_X,LCD_Y,old_pic1,old_pic2,temp,dx,kk;
	//地址转换，左上角为（0,0）点	
	LCD_X = x/16;
	if(y<=31)
		{
			LCD_Y = 0x80 + 31 - y;
			LCD_X = 0x88 + LCD_X; 
		}
	else
		{
			LCD_Y = 0x80 + 63 - y;
			LCD_X = 0X80 + LCD_X;
		}
	//读取GDRAM中数据
	loc_xy(LCD_X,LCD_Y);
	read_ram();
	old_pic1 = read_ram();
	old_pic2 = read_ram();
	
	dx = x%16;
	loc_xy(LCD_X,LCD_Y);
	if(dx<=7)
		{
			temp = 1;
			temp = temp<<(7-dx);
			if(state==1)
				{

					kk = old_pic1|temp;	
				}
			else
				{
					temp = 1;
					kk = old_pic1&(~(temp));
	
				}
			send_d(kk);
			send_d(old_pic2);				
		}
	else
		{
			temp = 1;
			temp = temp<<(15-dx);
			if(state==1)
				{

					kk = old_pic2|temp;	
				}
			else
				{
					kk = old_pic2&(~(temp));
	
				}
			send_d(old_pic1);
			send_d(kk);
				
		}

}
void lcd_display(void)
{
	send_i(0x34);
	send_i(0x36);
	send_i(0x30);
}
//全屏画图
void send_grap(unsigned char * pic)
{
	unsigned char  LCD_X,LCD_Y,x,y;

	LCD_Y = 0x80;
	LCD_X = 0x80;

	for(y = 0;y <= 31;y++)
		{

			LCD_X = 0x80;
			for(x = 0;x <= 7;x++)
				{
					loc_xy(LCD_X,LCD_Y);

					send_d(*pic);
					pic++;
					send_d(*pic);
					pic++;

					LCD_X++;
				}
			LCD_Y++;
		}

	LCD_Y = 0x80;
	for(y = 0;y <= 31;y++)
		{

			LCD_X = 0x88;
			for(x = 0;x <= 7;x++)
				{
					loc_xy(LCD_X,LCD_Y);

					send_d(*pic);
					pic++;
					send_d(*pic);	
					pic++;

					LCD_X++;
				}
			LCD_Y++;
		}

	send_i(0x34);
	send_i(0x36);
	send_i(0x30);

}

*/