基于單片機(jī)的函數(shù)信號發(fā)生器設(shè)計畢業(yè)論文-資料下載頁
2025-06-19 12:51本頁面
【正文】 5,0xe3,0xe1,0xde,0xdd,0xda,0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99,0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51,0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16,0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02 ,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,0x11,0x13,0x15,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,0x3d,0x40,0x43,0x45,0x48,0x4c,0x4e ,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66 ,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80 }。/*正弦波碼 */uchar fun=1,b=0,c=0,d=0,e=0,tl,th。sbit P3_0=P3^0。sbit P3_1=P3^1。sbit P3_2=P3^2。void key1(void)。void key2(void)。void key3(void)。void key4(void)。void judge(void)。void main(void){TMOD=0X01。th=0xff。tl=0x00。TH0=th。TL0=tl。ET0=1。EA=1。TR0=1。while(1) { judge()。 }}void judge(void){ uchar line,de1,de2,keym。P2=0xff。keym=P2。if(keym==0xff)return。for(de1=0。de1200。de1++) for(de2=0。de2125。de2++){。}P2=0xff。keym=P2。if(keym==0xff)return。P2=0xff。line=P2。 if(P2==0xfe) key1()。 if(P2==0xfd) key2()。 if(P2==0xfb) key3()。 if(P2==0xf7) key4()。}void key1(void) //１鍵選擇發(fā)波類型,1為正弦波,2為三角波,3為方波，4為鋸齒波。{fun++。if(fun==5)fun=0x01。}void key2(void) //２鍵加大頻率{if(th0xff)th++。}void key3(void) //３鍵減小頻率{if(th0x00)th。}void key4(void) //４鍵顯示頻率{double t。int f。TR0=0。//ＥＴ０的區(qū)別while (P2==0xf7){t=(65535th*256tl)*。f=(int)(15625/(t*4))。P3_0=0。 P3_1=0。 P3_2=0。P1=tab[f%10]。f=f/10。P3_0=1。 P3_1=0。 P3_2=0。P1=tab[f%10]。f=f/10。P3_0=0。 P3_1=1。 P3_2=0。P1=tab[f%10]。f=f/10。P3_0=1。 P3_1=1。 P3_2=0。P1=tab[f]。}TR0=1。}void time0_int(void) interrupt 1 //中斷服務(wù)程序{TR0=0。if(fun==1) { DA0832=tosin[b]。 //正弦波 b++。 }else if(fun==2) //三角波 { if(c128)DA0832=c*2。 else DA0832=(255c)*2。 c++。 }else if(fun==3) // 方波 { d++。 if(d=128)DA0832=0x00。 else DA0832=0xff。 }else if(fun==4) // 鋸齒波 { e++。 DA0832=e。 }TH0=th。TL0=tl。TR0=1。}附錄B：總體原理設(shè)計圖
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