L297+L298联合控制步进电机仿真

#include<reg52.h> #define uchar unsigned char #define uint unsigned int sbit INPUT1 = P2^0; //复位口 sbit INPUT2 = P2^1; //半步、整步 sbit INPUT3 = P2^2; //正反转 sbit INPUT4 = P2^3; //PWM波 uint MA=0,MB=0;//4Hhz的频率 uint SpeedA=25;//50%占空比 uint SpeedB=25; void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=125;y>0;y--); } void main(void) { INPUT1=1; INPUT2=1; INPUT3=1; INPUT4=1; TH0 = 0xEC; TL0 = 0x78; TMOD = 0x01; TR0 = 1; ET0 = 1; EA = 1; while(1){} } void time0_int() interrupt 1 { TR0=0; TH0=0xEC; TL0=0x78; MA++; if(MA< SpeedA){ INPUT4 = 1; } else INPUT4 = 0; if(MA == 50){ MA = 0; } TR0 = 1; }