第第頁ad9850-c程序-設計源代碼ad9850-c程序-源代碼

#include

#include

floatl,m,n,q,z;

doublek;

//定義管腳

#definedata_OUTP1

sbitFQ_UD=P3^0;//AD9850信號更新申請

sbitW_CLK=P3^1;

sbitFESET="P3"^2;//寫控制字時鐘

unsignedcharCON_word[5];

//Worddata[7]data[6]data[5]data[4]data[3]data[2]data[1]data[0]

//W0PhasebPhaseb3Phaseb2Phaseb1Phaseb0PowerDownControlControl

//W1Freq-b31Freq-b30Freq-b29Freq-b28Freq-b27Freq-b26Freq-b25Freq-b24

//W2Freq-b23Freq-b22Freq-b21Freq-b20Freq-b19Freq-b18Freq-b17Freq-b16

//W3Freq-b15Freq-b14Freq-b13Freq-b12Freq-b11Freq-b10Freq-b9Freq-b8

//W4Freq-b7Freq-b6Freq-b5Freq-b4Freq-b3Freq-b2

//

//函數名稱：delay

//入口參數：N

//函數功能：延時子程序，實現(16*N+24)us的延時

//系統采用11.0592MHz的時鐘時,延時滿足要求,其它情況需要改動

//

//voiddelay(unsignedintN)

//{

//inti;

//for(i=0;i//}

//

//

/*******************************************************/

voidFreq_Adjust(longvalue_Freq)

{

unsignedinti;

longf;

unsignedcharL4,L3,L2,L1,L0;

FQ_UD=0;

f="value"_Freq*86;

L0=0x28;

L4=f

L3=(f>>8)

L2=(f>>16)

L1=(f>>24)

CON_word[0]=L0;

CON_word[4]=L4;

CON_word[3]=L3;

CON_word[2]=L2;

CON_word[1]=L1;

FQ_UD=0;

W_CLK=0;

//delay(0);

_nop_();_nop_();_nop_();_nop_();_nop_();

CON_word[0]=CON_word[0]//置工作方式選擇位為00

for(i=0;i=0

Delay1ms(150);

break;

}

}

if(m>=0

}

if(z==14)

{

gotoBEGAIN;

}

if(z==15)

{

GotoXY(0,1);

Print(

GotoXY(9,1);

Print("OK!!");

Delay1ms(1000);

break;

}

if(l==1)

{k=z;}

if(l==2)

{

k="k"*10+z;

}

if(l==3)

{

k="k"*10+z;

}

if(l==4)

{

k="k"*10+z;

}

if(l==5)

{

k="k"*10+z;

}

if(l==6)

{

k="k"*10+z;

}

if(l==7)

{

k="k"*10+z;

}

if(l==8)

{

k="k"*10+z;

}

if(l>8||k>25000000)

{

GotoXY(0,1);

Print("ERROR!!");

Delay1ms(500);

gotoBEGAIN;

}

IntToStr(k,

GotoXY(0,1);

Print(

P2=0XF0;

Delay1ms(150);

}

FQ_UD=0;

Freq_Adjust(k);

while(1)

{

GotoXY(0,0);

Print("THEPLDISPLAY");

IntToStr(k,

GotoXY(0,1);

Print(

m="keynum"();

if(m==10)

{Delay1ms(300);

if(k>=30000000){k=30000000;}

else{k="k"+1000;}

}

if(m==11)

{Delay1ms(300);

if(k<=0){k=0;}

else{k=k-1000;}

}

if(m==14)

{

gotoBEGAIN;

}

}

}

AD9850內含可編程DDS系統和高速比較器，能實現全數字編程控制的頻率合

成。可編程DDS系統的核心是相位累加器，它由一個加法器和一個N位相位寄