89C51步进电机仿真_加减速控制_正反转

#include<reg51.h> #define uchar unsigned char #define uint unsigned int uchar idata plus[9]={0x01,0x03,0x02,0x06,0x04,0x0c,0x08,0x09,0x00}; uchar idata plus1[9]={0x09,0x08,0x0c,0x04,0x06,0x02,0x03,0x01,0x00}; uchar *p; bit flag=1; uint n=200; void delay(uint t) { uchar i; for(;t>0;t--) for(i=248;i>0;i--); } void fall() { n+=10; if(n>500) n=100; } void rise() { n-=10; if(n<100) n=500; } void keyscan() { uchar k; P1=0xff; if(P1!=0xff) delay(20); if(P1!=0xff) { k=~(P1 & 0xff); if(k==1) rise(); else fall(); } } void rol() { P2=*p; delay(n); p++; if(*p==0x00) p=p-8; } void inter() interrupt 0 using 1 { p=plus; } void inter1() interrupt 2 using 2 { p=plus1; } void main() { p=plus; while(1) { keyscan(); rol(); } }