main.c

32*32点阵屏实现的模拟显示的数字钟

//*************头文件***************************
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/signal.h>
#include <avr/delay.h>
//*************宏定义************************
#define clr    0
#define en_   1
#define refresh_   2
#define c_595  PORTB     
#define c_154  PORTA      
#define Pi_       3.1415926535
#define Deg_Pi       3.1415926535/180
#define r_hour     9
#define r_min      11
#define r_sec      14
//*************全局变量声明******************
unsigned int sec_flag;
unsigned char cour_=0,op_=1;
//-------------------------------------------
//  数组初始化，直接复制过来，【行】， 【列】
//-------------------------------------------
unsigned char dis_mem[2][32][4]=
{

/*--  调入了一幅图像：D:\Download\1.bmp  --*/
/*--  宽度x高度=32x32  --*/

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

};
const unsigned char round_[32][4]=
{
/*--  调入了一幅图像：D:\LiangLei\MyProtuesProject\RoundClock\1.bmp  --*/
/*--  宽度x高度=32x32  --*/
0x00,0x07,0xE0,0x00,0x00,0x39,0x9C,0x00,0x00,0xC1,0x83,0x00,0x01,0x00,0x02,0x80,
0x07,0x00,0x04,0x60,0x08,0x80,0x00,0x10,0x08,0x00,0x00,0x08,0x10,0x00,0x00,0x18,
0x20,0x00,0x00,0x24,0x30,0x00,0x00,0x04,0x48,0x00,0x00,0x02,0x40,0x00,0x00,0x02,
0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x01,0x80,0x00,0x00,0x01,0xE0,0x01,0x80,0x07,
0xE0,0x01,0x80,0x07,0x80,0x00,0x00,0x01,0x80,0x00,0x00,0x01,0x00,0x00,0x00,0x00,
0x40,0x00,0x00,0x02,0x40,0x00,0x00,0x02,0x20,0x00,0x00,0x14,0x24,0x00,0x00,0x0C,
0x18,0x00,0x00,0x08,0x10,0x00,0x00,0x10,0x08,0x00,0x00,0x10,0x06,0x40,0x02,0x20,
0x00,0x80,0x01,0x40,0x01,0x81,0x81,0x80,0x00,0x61,0x86,0x00,0x00,0x17,0xE8,0x00,

};
//*************函数声明**********************
void Delay(unsigned int x);
void init(void);
void Byte_out(unsigned char);
void Dis_Point(unsigned char x, unsigned char y);
void Dis_Deg(float alfa,unsigned char r);
void Dis_D_A(unsigned char hour, unsigned char min, unsigned char sec );
//*************主程序************************
void main (void)
{
   /////////////////
   /*初始化时间*/
   unsigned char hour=2,min=48,sec=45,i,j;
   
   init();
   Delay(50);
   
   /////////////////
   while(1)
   {
	if (sec_flag == 1)
	{
		 if(sec==59 && min==59 && hour==23) {hour=0x00;min=0x00;sec=0x00;}
		 else if (min==59 && sec == 59)            {hour++;min=0x00;sec=0x00;}
		 else if (sec==59)                                  {min++;sec=0x00;}
		 else                                                      {sec++;}

		 
		 /* 确定当前显示哪个数组*/
		 if (cour_ == 0)   {cour_ = 1;op_ = 0;}
		 else                    {cour_ = 0;op_ = 1;}

		 
		 /* 处理不显示的那个，*/
		 for (i=0; i<32; i++)
		 {
			for (j=0; j<4; j++)
			{
				dis_mem[op_][i][j]=round_[i][j];
			}
		 }
		 Dis_D_A(hour,min,sec);
		 sec_flag = 0;

	}
   }
}

/******************************************************************/
/* 函数名：dis_point(unsigned char x, unsgined char y)
/* 参  数：无
/* 功  能：用于在确定的点显示
/******************************************************************/ 
void Dis_Point(unsigned char x, unsigned char y)
{
	dis_mem[op_][y][x/8] = dis_mem[op_][y][x/8] | 1<<(7-x%8);
}

/******************************************************************/
/* 函数名：显示极坐标的点
/* 参  数：无
/* 功  能：用于显示直线从r1 到 r2
/******************************************************************/ 
void Dis_Deg(float alfa,unsigned char r)
{
	unsigned char x,y;
	alfa = alfa * Deg_Pi;
	x = r*sin(alfa) +15.5;
	y = 15.5 - r*cos(alfa);
	Dis_Point(x,y);
	
}
/******************************************************************/
/* 函数名：由数字时间显示图形
/* 参  数：无
/* 功  能：
/******************************************************************/ 
void Dis_D_A(unsigned char hour, unsigned char min, unsigned char sec )
{
	float alfa_sec,alfa_min,alfa_hour,i;
	
	alfa_sec = 6*sec;
	alfa_min = 6*min + sec/10;
	alfa_hour = 30*hour + min/2;
	/*绘制定点*/
	/*
	Dis_Deg(alfa_sec,r_sec);
	Dis_Deg(alfa_min,r_min);
	Dis_Deg(alfa_hour,r_hour);
	*/
	/*极坐标方式绘制指针*/
	//秒
	for (i=0; i<=r_sec; i=i+0.2)
	{
		Dis_Deg(alfa_sec,i);
		Dis_Deg(alfa_sec+r_sec-i,i);
	}
	
	//分
	for (i=0; i<=r_min; i=i+0.2)
	{
		Dis_Deg(alfa_min,i);
		Dis_Deg(alfa_min+r_min-i,i);
	}
	//时
	for (i=0; i<=r_hour; i=i+0.2)
	{
		Dis_Deg(alfa_hour,i);
		Dis_Deg(alfa_hour+r_hour-i,i);
	}
}
//***初始化*****************************
void init(void)
{
	//***关中断***
     	cli(); 
	DDRA = 0xff;   PORTA = 0xff;//A口输出
 	DDRB = 0xff;   PORTB = 0xff;//B口输出
 	DDRC = 0xff;   PORTC = 0xff;
 	DDRD = 0xff;   PORTD = 0xff;
	
 	TCNT1H = 0xfa; TCNT1L = 0x24; //8Mhz,1.5ms
	//***控制寄存器***
 	TCCR1A = 0x00;
 	TCCR1B = 0x02;//8分频
	//T1溢出中断使能
     	TIMSK |= _BV(TOIE1);
	//***禁止JTAG***
	MCUCSR |= _BV(JTD);
	MCUCSR |= _BV(JTD);
	MCUCSR |= _BV(JTD);
	MCUCSR |= _BV(JTD);
	/*初始化SPI*/
	/*配置输入输出*/
	SPCR = (1<<SPE)|(1<<DORD)|(1<<MSTR);/*使能，主机，分频4*/
	SPSR = (1<<SPI2X);//倍频 8Mhz
	//***开中断***
     	sei();
	c_595 &=~ _BV(en_);//使能，一直有效
	
}


/******************************************************************/
/* 函数名：定时器中断
/* 参  数：无
/* 功  能：用于时间的刷新，日期的维护
/******************************************************************/ 
SIGNAL (SIG_OVERFLOW1 )
{
	 static unsigned int time_add;
	 static unsigned char i=0;
	 unsigned char  k;
	 unsigned char  dis_[4];//动态扫描中用到的缓存
	 
	 TCNT1H = 0xfa; TCNT1L = 0x24; //8Mhz,1.5ms
	 
	 time_add++;

	 //-------------------------------------------------------------
	 //  显示缓存的概念：
	 //
	 //  在每次输出前，维护显存，就可以实现字符的移动。
	 //-------------------------------------------------------------
	 
	 //i 表示当前被点亮的行
	 i++; //位置很重要
	 if(i>=32){i=0;}
	 
	 dis_[0]=dis_mem[cour_][i][0];//先发1,[0]
	 dis_[1]=dis_mem[cour_][i][1];
	 dis_[2]=dis_mem[cour_][i][2];
	 dis_[3]=dis_mem[cour_][i][3];
 
	 if (time_add == 500)//秒
	 {
	 	time_add = 0;
		//显示
		sec_flag = 1;
	 }
	 
	 c_595 &=~ _BV(clr);//寄存器清零
	 c_595 |=    _BV(clr);
	 
	 for(k=0; k<4; k++)
	 {
	 	 Byte_out(dis_[k]);
	 }
	 
	 c_154= i;//一定要在刷新之前
	 
	 c_595 &=~ _BV(refresh_);//数据更新
	 c_595 |=    _BV(refresh_);
	 
	 
	 
}

//-------------------------------------------------------------------------------------------------------
//  函数名称：Byte_out()
//  输入参数：byte，需要从74LS164并行口输出的数据
//  输出参数：无
//  功能说明：发送八位串行数据至并口
//--------------------------------------------------------------------------------------------------------
void  Byte_out(unsigned char byte)
{
	unsigned char i;
	
	SPDR=byte;
	while(!(SPSR & (1<<SPIF)));// 等待SPIF置位，即等待数据发送完毕
	
}
/******************************************************************/
/* 函数名：Delay(unsigned int x)
/* 参  数：int型延时参数
/* 功  能：延时
/******************************************************************/ 
void Delay(unsigned int x)  
{
  unsigned int j;
  while(x--)
  {
		for (j=0;j<200;j++){;}
  }
}