ps2small.c

AD9851-dds的设计资料

#include<iom128v.h>
#include<macros.h>
#define  DATA1         0x20
#define fosc 16000000   //晶振8MHZ
#define baud 9600	   //波特率
#define   N   10
// #define    PHASE_N    32
//  #define    FREQ_M       32
  //#define    SYS_CLOCK   120000000
#define    N2        35.79109
void   initail_ocmj(void);
void write_a(unsigned char x,unsigned char y,unsigned char asc_p);
void ocmj_write(unsigned char adata);
void DisplayListChar(unsigned char x,unsigned char y);
void write_lcd_word(unsigned char cmd ,unsigned char x,unsigned char y,unsigned char *pp);
void send_data(unsigned char *arry);
void initial_port(void);

unsigned char dat=0,flag=0,sign=0;
unsigned char Key_UP=0,count=0,sbuff[8];

const unsigned char table[]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,
                    0x37,0x38,0x39,0x41,0x42,0x43,0x44,0x45,0x46};//,0x47,0x48};
unsigned char arry[][2]={
0x70, '0',
0x69, '1',
0x72, '2',
0x7A, '3',
0x6B, '4',
0x73, '5',
0x74, '6',
0x6C, '7',
0x75, '8',
0x7D, '9',
0x71, 'D',
0x5a, 'E'
  };
  
/***********************************
 void uart0_init(void)
{
 UCSR0B = 0x00; //disable while setting baud rate
 UCSR0A = 0x00;
 UCSR0C =(1<<UCSZ01)|(1<<UCSZ00);//8bit+1bit stop
 UBRR0L=(fosc/16/(baud+1))%256;
 UBRR0H=(fosc/16/(baud+1))/256;
 UCSR0B =(1<<RXEN0)|(1<<TXEN0);//RXCEN TXCEN
}
/****************************/
//键盘输入数字转换   
unsigned  long int convert(unsigned char *arry,unsigned char length)
    {
	unsigned char i;
	unsigned long int num;
	num = arry[0];
	for(i = 1; i < length; i++)
	    {
	    num *= 10;
		num += arry[i]; 
		}
	return num;
	}
/********************************************************/ 
//频率，控制字转换 
void  calcultor(unsigned long int frequn_value)
	{
	unsigned long int fm;
	char i;
	fm=(float)(frequn_value) * N2;
	for(i=8;i>=1;i--)
	    {
		sbuff[i-1]=fm&0x0f;
		fm>>=4;
		}
	} 
	  /* 
void putchar0(unsigned char c)
	{	 
     while (!(UCSR0A&(1<<UDRE0)));
	 UDR0=c;    
	}*/
/***********************************/
#pragma interrupt_handler PS2_KEY:6
 
void PS2_KEY(void)
    {
    if((count>0)&&(count<9))
        {  
		dat=dat>>1;
        if(PINE&DATA1)
	    dat|=0x80;
        }
    count++;
	while(!(PINE&0X10));	
    if(count>10)
        {
		count=0;
        flag=1;
        EIMSK=0x00;
		}
    }
  /*****************************/
unsigned char Decode(unsigned char ScanCode) 
    {
    unsigned char TempCyc,KEY;
	if (!Key_UP)                //当键盘松开时
	switch (ScanCode)
        {
		case 0xF0 :  Key_UP=1; break;                // 当收到0xF0，Key_UP置1表示断码开始
		case 0xe0 :  break;
		default:
	        for(TempCyc = 0;(arry[TempCyc][0]!=ScanCode)&&(TempCyc<11); TempCyc++); //查表显示
	            if(arry[TempCyc][0] == ScanCode) 
                    { 
					sign=1;
				    KEY=arry[TempCyc][1] ;
					}
		break;		
		}
	else
		Key_UP = 0;					
	flag = 0; //标识字符处理完了
	if(sign)
	    { 
	    sign=0; 
	    return KEY; 
		}
	else 
	     return('%');		  
    } 
/***********************************/
void initial_Exinterup(void)
    {
	DDRE&=~BIT(4);
	DDRE&=~BIT(5);
	PORTE|=BIT(4);
	PORTE|=BIT(5);
	   
    SREG=0X80;
	MCUCR=0X00;
	EICRB=0X00; 
    EIMSK=0X10;
	}
	/*****************************************/				
void  main(void)
	{
	unsigned char i,j,sdata,buff[N],arry_data[8],arry11_data[5]={0x09};
	unsigned long int sum;
    i=0;
	initail_ocmj();
	initial_Exinterup();
	ocmj_write(0xf4);
	initial_port();
	write_lcd_word(0xf0,0,0,"输入频率");
	send_data(arry11_data);    ////所有寄存器清零
	write_lcd_word(0xf0,0,2,"频率控制字");
    while(1)
	    {
		if(flag)  /////1 if start 
		    { 
		    sdata = Decode(dat);
		    if(sdata=='D')
		        {
			    sdata='%';
			    i=0;
			    DisplayListChar(0,16);  ///clr lcd
		        }
		    if((sdata!='%')&&(sdata!='E')) //3if start
			    { 
			    write_a(i,16,sdata);     
			    buff[i]=sdata-0x30;
			    i++;
			    }                ///3if end 
			if( sdata=='E')  ///4if start
			    {
			    sum=convert(buff,i);   ///键盘直转化为频率
				calcultor(sum);    ////转化8位的16进制显示  0x0x;
				DisplayListChar(0,48);
				for(j=0;j<8;j++)
				    {
				    arry_data[j]=sbuff[j];
				    write_a(j,48,table[arry_data[j]]);   ///显示频率控制字
				    if(j%2)
				        {
					    arry11_data[j/2+1]=(arry_data[j-1]<<4)|arry_data[j];
				        }    ////8个0x0x转化为4个8位频率控制字
			        } 
			    send_data(arry11_data);    ///输出32位频率控制字
			    }///4if end
		    }	///1 if end  
		    else 
		        EIMSK=0x10;	
		 }   
    }