点阵汉字20080106.c

VB环境下的串口通讯设计

#include <reg52.h>
#include <intrins.h>
#define int8 unsigned char
#define int16 unsigned int
#define int32 unsigned long 
//============================
sbit LED1=P3^4;
sbit GRE=P1^7;
sbit s1=P0^3;
sbit s2=P2^3;
sbit SCK=P2^4;
sbit RCK=P2^5;
sbit nG=P2^6;
sbit SER=P2^7;
int8 tab[16][6]={
				{0x40,0x00,0x00,0x00,0x08,0x00},
				{0x27,0xF0,0x12,0x10,0x0B,0xFC},
				{0x24,0x10,0x12,0x10,0x49,0x08},
				{0x14,0x10,0x12,0x10,0x49,0x10},
				{0x07,0xF0,0x12,0x10,0x48,0xA0},
				{0x94,0x10,0xFF,0xFE,0x48,0x40},
				{0x54,0x10,0x12,0x10,0x48,0xB0},
				{0x17,0xF0,0x12,0x10,0x49,0x08},
			/**/{0x2F,0xFC,0x12,0x10,0x0A,0x04},
				{0xC9,0x24,0x13,0xF0,0x09,0x00},
				{0x49,0x24,0x10,0x00,0x3F,0xF8},
				{0x49,0x24,0x10,0x00,0x01,0x00},
				{0x49,0x24,0x10,0x04,0x01,0x00},
				{0x49,0x24,0x1F,0xFC,0x01,0x00},
				{0x5F,0xFE,0x00,0x00,0xFF,0xFE},
				{0x40,0x00,0x00,0x00,0x00,0x00},
			   };
/*
			

0x40,0x00,0x27,0xF0,0x24,0x10,0x07,0xF0,0x94,0x10,0x54,0x10,0x17,0xF0,0x20,0x00,
0x2F,0xFC,0xC9,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x5F,0xFE,0x40,0x00,"温"
0x00,0x00,0x12,0x10,0x12,0x10,0x12,0x10,0x12,0x10,0xFF,0xFE,0x12,0x10,0x12,0x10,
0x12,0x10,0x13,0xF0,0x12,0x10,0x10,0x00,0x10,0x08,0x1F,0xFC,0x00,0x00,0x00,0x00,"世"
0x08,0x00,0x0B,0xFC,0x49,0x08,0x49,0x10,0x48,0xA0,0x48,0x40,0x48,0xB0,0x49,0x0E,
0x0A,0x04,0x09,0x00,0x3F,0xF8,0x01,0x00,0x01,0x00,0x01,0x00,0xFF,0xFE,0x00,0x00,"坚"

*/
//==========================

void delay(int8 N);
void sendbyte(int8 byte);
void display(int8 n);
void Save595(void);
void WriteByte(int8 val);
void lay(int8 n);
void delays(int8 n);
void XianShiX(void);
//==========================


	/*主函数*/
void main(void)
{
	int8 i;
	i=0;
	P1=0x00;
	P3=0x00;
	nG=0;
	display(0);

	while(1)
	{	
	XianShiX();
	   	
	}
	
}

/* 列选择*/
void lay(int8 n)
{
	int8 i;
	i=n;
	s1=0;
	s2=0;
	if(n<8)
	{
		_nop_();
		P0=(P0&0xf8)|(~i);
	}
	else
	{	i=i-7;
		i=i&0x07;
		i=i|0xf0;		  //保护nG位
		P2=(P2&0xf8)|(~i);
	}

}		
/*延时*/
void delay(int8 N)
{
	int8 i,j,k;
	for(i=0;i<100;i++)
		for(j=0;j<10;j++)
			for(k=0;k<N;k++);	

}
/*发送字节，移位发送*/
void WriteByte(int8 val)
{
	int8 i,m;
  	m=~val;
  	for (i = 8; i > 0; i --)
	{
    	SCK = 0;//拉低74HC595时钟
    	SER = m&0x01;//发送74HC595一位串行数据
    	SCK = 1;//拉高74HC595时钟
		m=m>>1;
    	_nop_();//延时
  }
  SER = 1;//释放数据总线
//========================
//	以下3条指令若在多字节时,应该移入多字节全发送完后在执行此3条指令
//  RCLK = 0;
//  _nop_();//延时
//  RCLK = 1;//打入并行数据
}

/*保存串行发送的数据，并打入到并行引脚寄存器*/
//void Save595(void) 
//{
//        RCK=0;	//保存并行数据
//        _nop_();
//        RCK=1;
//}

/*发送字*/
void display(int8 n )
{
	int8 i;
	for(i=0;i<6;i++)
	WriteByte(tab[n][i]);
    RCK=0;	//保存并行数据
    _nop_();
    RCK=1;
}

void delays(int8 n)
{
	int8 i;
	n=n;
	for(i=10;i>0;i--);
}

void XianShiX(void)
{
	/**/display(0);//行0
	   	lay(14);   //列
	   	delays(1); //短延时
	/**/display(1);//行1
	   	lay(13);
	   	delays(1);
	/**/display(2);//行2
	   	lay(12);
	   	delays(1);
	/**/display(3);//行3
	   	lay(11);
	   	delays(1);
	/**/display(4);//行4
		lay(10);
		delays(1);
	/**/display(5);//行5
	   	lay(9);
	   	delays(1);
	/**/display(6);//行6
	   	lay(8);
	   	delays(1);
	/**/display(7);//行7
	   	lay(15);
	   	delays(1);
	/**/display(8);//行8
	   	lay(7);
	   	delays(1);
	/**/display(9);//行9
	   	lay(6);
	   	delays(1);
	/**/display(10);//行10
	   	lay(5);
	   	delays(1);
	/**/display(11);//行11
	   	lay(4);
	   	delays(1);
	/**/display(12); //行12
	   	lay(0);
	   	delays(1);
	/**/display(13); //行13
	   	lay(1);
	   	delays(1);
	/**/display(14); //行14
	   	lay(2);
	   	delays(1);
	/**/display(15);  //行15
	   	lay(3);
	   	delays(1);
}