51单片机按键直接控制舵机旋转

#include typedef unsigned char uchar;typedef unsigned int uint;sbit  KEY1=P3^4;sbit  KEY2=P3^5;sbit  KEY3=P3^6;sbit  KEY4=P3^7;void Delay(unsigned int s);uchar flag_0;uchar flag_1;void Delay(unsigned int s){unsigned int i;for(i=0; iinterrupt 1 {       if(flag_0==1)	PWM_Value[0]+=1;if(flag_0==2)	PWM_Value[0]-=1;if(flag_1==1)	PWM_Value[1]+=1;if(flag_1==2)	PWM_Value[1]-=1;if(PWM_Value[0]>=2500)PWM_Value[0]=2500;if(PWM_Value[1]>=2500)PWM_Value[1]=2500;if(PWM_Value[0]<=500)PWM_Value[0]=500;if(PWM_Value[1]<=500)PWM_Value[1]=500;switch(order){case 1:PWM_OUT0=1;TH0=(65536-PWM_Value[0])>>8; TL0=(uchar)(65536-PWM_Value[0]);break;                          case 2:PWM_OUT0=0;TH0=(65536-(5000-PWM_Value[0]))>>8;    TL0=(uchar)(65536-(5000-PWM_Value[0]));break;                          case 3:PWM_OUT1=1;TH0=(65536-PWM_Value[1])>>8; TL0=(uchar)(65536-PWM_Value[1]);break;                          case 4:PWM_OUT1=0;TH0=(65536-(5000-PWM_Value[1]))>>8;    TL0=(uchar)(65536-(5000-PWM_Value[1]));break;                              case 5:TH0=60536>>8;   TL0=(uchar)60536;break;case 6:TH0=60536>>8;   TL0=(uchar)60536;order=0;break;default: order=0; break;}order++;}