at89c2051制作的超聲波測(cè)距源程序

#define k1 P3_4
#define csbout??? P3_5????????????????? //超聲波發(fā)送
#define csbint??? P3_7????????????????? //超聲波接收
#define csbc=0.034
#define bg? P3_3
unsigned char csbds,opto,digit,buffer[3],xm1,xm2,xm0,key,jpjs;//顯示標(biāo)識(shí)
unsigned char convert[10]={0x3F,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//0~9段碼
unsigned int s,t,i, xx,j,sj1,sj2,sj3,mqs,sx1;
bit cl;?????
????????????????????????????
void csbcj();
void delay(j);????????????????????????????? //延時(shí)函數(shù)
void scanLED();????????????????????????????? //顯示函數(shù)
void timeToBuffer();????????????????? //顯示轉(zhuǎn)換函數(shù)
void keyscan();
void k1cl();
void k2cl();

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