STC15控制舵机

#include<STC/STC15.H> #include<intrins.h> #include<delay.h> #define FOSC 12 //MHz #define rate 50 //Hz~20ms #define max 247 //0.7ms #define middle 237 //1.5ms #define min 225 //2.5ms void PWM0Init(void){ CMOD=0x04; //设置PCA定时器 CCAPM0=0x42; //设置为PWM模式 CL=CH=0x00; CCAP0L=CCAP0H=0xFF; //初始化PWM } void T0Init(void){ AUXR &= 0x7F; //定时器时钟12T模式 TMOD &= 0xF0; //设置定时器模式 TMOD |= 0x02; //设置定时器模式 TL0 = 0xB2; //设置定时初值 TH0 = 0xB2; //设置定时重载值 TF0 = 0; //清除TF0标志 TR0 = 1; //定时器0开始计时 } void main (void){ unsigned char d_c = middle; //占空比*1000 T0Init(); PWM0Init(); //PWM初始化 CCAP0L=CCAP0H=middle; CR=1; //启动PCA定时器 Delay5s(); while(1){ for(d_c=min;d_c<=max;d_c++){ CCAP0L=CCAP0H=d_c; Delay60ms(); } for(d_c=max;d_c>=min;d_c--){ CCAP0L=CCAP0H=d_c; Delay60ms(); } } }