基于51单片机的信号发生器-完整电路、程序

附录2：源程序

#include

#define uchar unsigned char #define uint unsigned int

sbit csda=P2^2; sbit wr=P2^1; sbit s1=P3^2; sbit s2=P3^3;

uchar k=0,p=0,delay=0; uchar bxxz=0;pinglv=0; uchar a=1,b=0,c=0,d=0,e=0;

uchar code sin[64]={

135,145,158,167,176,188,199,209,218,226,234,240,245,249,252,254,254,253,251,247,243,237,230,222,213,204,193,182,170,158,

146,133,121,108,96,84,72,61,50,41,32,24,17,11,7,3,1,0,0,2,5,9,14,20,28,36,45,55,66,78,90,102,114,128 };

uchar code juxing[64]={

255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,

255,255,255,255,255,255,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };

uchar code juchi[64]={

0,4,8,12,16,20,24,28,32,36,40,45,49,53,57,61,65,69,73,77,81,85,89,93,97,101,105,109,113,117,121,125,130,134,138,142,

146,150,154,158,162,166,170,174,178,182,186,190,194,198,202,206,210,215,219,223,227,231,235,239,243,247,251,255 };

uchar code tixing[64]={

0,13,26,39,52,65,78,91,104,117,130,143,156,169,182,195,208,221,234,247,247,247,247,247,247,247,247,247,247,247,247,247,247,247,247,247,247,247,

247,247,247,247,247,247,247,242,229,216,203,190,177,164,151,138,125,112,99,86,73,60,47,34,21,8 };

uchar code sanjiao[64]={

0,8,16,24,32,40,48,56,64,72,80,88,96,104,112,120,128,136,144,152,160,168,176,184,192,200,208,216,224,232,240,248,

248,240,232,224,216,208,200,192,184,176,168,160,152,144,136,128,120,112,104,96,88,80,72,64,56,48,40,32,24,16,8,0 };

void delay1()

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{ int a,b;

for(a=1;a>0;a--) for(b=122;b>0;b--);

} void int0() interrupt 0

{ EX0=0; delay1(); if(s1==0){

bxxz++; if(bxxz==5) bxxz=0; switch(bxxz) {

case 0 :

{a=1,b=0,c=0,d=0,e=0;} break; case 1 : {a=0,b=1,c=0,d=0,e=0;}

break;

case 2 : {a=1,b=0,c=1,d=0,e=0;} break; case 3 : {a=0,b=0,c=0,d=1,e=0;}

break;

case 4 : {a=0,b=0,c=0,d=0,e=1;}

break;

} delay1(); while(!s1);

} while(!s1); EX0=1;

}

void int1() interrupt 2 { EX1=0; delay1(); if(s2==0){

p++;

if(p==8)

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p=0;

switch(p) { case 1 : pinglv=3; break; case 2 :

pinglv=6; break; case 3 :

pinglv=9;

break; case 4 : pinglv=12; break; case 5 : pinglv=15; break; case 6 : pinglv=18;

break;

case 7 : pinglv=21; break;

default : pinglv=0;

break;

}

delay1();

while(!s2);

} while(!s2);

EX1=1;

}

void main() { csda=0; wr=0; EA=1; IT0=1; EX0=1; IT1=1; EX1=1;

while(1)

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{ while(a) {

delay=pinglv; P0=sin[k]; k++; if(k==64)

k=0;

while(delay) delay--;

}

while(b) {

delay=pinglv; P0=juxing[k]; k++;

if(k==64) k=0;

while(delay) delay--;

}

while(c) {

delay=pinglv; P0=juchi[k]; k++;

if(k==64)

k=0;

while(delay) delay--; }

while(d) {

delay=pinglv; P0=tixing[k]; k++; if(k==64)

k=0;

while(delay) delay--;

}

while(e) {

delay=pinglv;

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P0=sanjiao[k];

k++;

if(k==64) k=0;

while(delay) delay--;

}

}

}

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