51单片机控制电机代码

#include <reg52.h> #define uchar unsigned char #define uint unsigned int sbit IN1 = P2^0; sbit IN2 = P2^1; sbit PWM = P2^2; sbit Key1 = P1^7; sbit Key2 = P1^6; sbit Key3 = P1^5; sbit Key4 = P1^4; sbit Key5 = P1^3; uint t = 46082; void delay_ms(uchar t) { uchar x,y; for(x = t;x > 0;x--) for(y = 110;y > 0;y--); } void Timer0_Init() { TMOD = 0X01; TH0 = (65536 - 46082)/256; TL0 = (65536 - 46082)%256; EA = 1 ; ET0 = 1; TR0 = 1; } void Positive_Rotation() { IN1 = 0; IN2 = 1; } void Reverse_Rotation() { IN1 = 1; IN2 = 0; } void Stop_Rotation() { IN1 = 1; IN2 = 1; } void Key_Scan() { if(Key1 == 0) { delay_ms(20); if(Key1 == 0) { Positive_Rotation(); } } else if(Key2 == 0) { delay_ms(20); if(Key2 == 0) { Reverse_Rotation(); } } else if(Key3 == 0) { delay_ms(20); if(Key3 == 0) { Stop_Rotation(); } } else if(Key4 == 0) { delay_ms(20); if(Key4 == 0) { t = t + 100; if(t > 65000) t = 65000; } } else if(Key5 == 0) { delay_ms(20); if(Key5 == 0) { t = t - 100; if(t < 500) t = 500; } } } void main() { Timer0_Init(); while(1) { Key_Scan(); } } void timer0() interrupt 1 { TH0 = t/256; TL0 = t%256; PWM = ~PWM; }