51单片机Protues仿真舵机，可以通过按键实现4个舵机角度的变化，并在LCD1602液晶显示舵机角度。仿真+程序。

#include<reg51.h> #include<LCD1602.h> #define uchar unsigned char #define uint unsigned int uchar count,jb0,jb2,jb3,jb4,h; uchar count,jb0_ang,jb2_ang,jb3_ang,jb4_ang,h; sbit key0=P0^0; sbit key1=P0^1; sbit key2=P0^2; sbit key3=P0^3; sbit key4=P0^4; sbit key5=P0^5; sbit key6=P0^6; sbit key7=P0^7; sbit pwm1=P3^4; sbit pwm2=P3^5; sbit pwm3=P3^6; sbit pwm4=P3^7; void DelayUs2x(unsigned char t) { while(--t); } /*------------------------------------------------ mS延时函数，含有输入参数 unsigned char t，无返回值 unsigned char 是定义无符号字符变量，其值的范围是 0~255 这里使用晶振12M，精确延时请使用汇编 ------------------------------------------------*/ void DelayMs(unsigned char t) { while(t--) { //大致延时1mS DelayUs2x(245); DelayUs2x(245); } } void Init_Timer1() { TMOD |=0x10; EA=1; ET1=1; TR1=1; } void main(void) { LCD_initial(); LCD_set_position(0); LCD_prints("1:"); LCD_set_position(8); LCD_prints("2:"); LCD_set_position(0x40); LCD_prints("3:"); LCD_set_position(0x40+8); LCD_prints("4:"); Init_Timer1(); jb0=3;jb2=3;jb3=3;jb4=3; while(1) { if(key0 == 0) { jb0++; if(jb0>=8)jb0=8; while(key0 == 0); } if(key1 == 0) { jb0--;if(jb0<=3)jb0=3; while(key1 == 0); } if(key2 == 0) { jb2++;if(jb2>=8)jb2=8; while(key2 == 0); } if(key3 == 0) { jb2--;if(jb0<=3)jb0=3; while(key3 == 0); } if(key4 == 0) { jb3++; if(jb2>=8)jb2=8; while(key4 == 0); } if(key5 == 0) { jb3--;if(jb3<=3)jb3=3; while(key5 == 0); } if(key6 == 0) { jb4++;if(jb4>=8)jb4=8; while(key6 == 0); } if(key7 == 0) { jb4--;if(jb4<=3)jb4=3; while(key7 == 0); } LCD_set_position(2);//LCD_printc('1');LCD_printc('2'); switch(jb0){ case 3:LCD_printc('-');LCD_printc('9');LCD_printc('0'); break; case 4:LCD_printc('-');LCD_printc('8');LCD_printc('0'); break; case 5:LCD_printc('-');LCD_printc('3');LCD_printc('2'); break; case 6:LCD_printc('+');LCD_printc('1');LCD_printc('5'); break; case 7:LCD_printc('+');LCD_printc('6');LCD_printc('2'); break; case 8:LCD_printc('+');LCD_printc('9');LCD_printc('0'); break; } LCD_set_position(10);//LCD_printc('1');LCD_printc('2'); switch(jb2){ case 3:LCD_printc('-');LCD_printc('9');LCD_printc('0'); break; case 4:LCD_printc('-');LCD_printc('8');LCD_printc('0'); break; case 5:LCD_printc('-');LCD_printc('3');LCD_printc('2'); break; case 6:LCD_printc('+');LCD_printc('1');LCD_printc('5'); break; case 7:LCD_printc('+');LCD_printc('6');LCD_printc('2'); break; case 8:LCD_printc('+');LCD_printc('9');LCD_printc('0'); break; } LCD_set_position(0x42);//LCD_printc('1');LCD_printc('2'); switch(jb3){ case 3:LCD_printc('-');LCD_printc('9');LCD_printc('0'); break; case 4:LCD_printc('-');LCD_printc('8');LCD_printc('0'); break; case 5:LCD_printc('-');LCD_printc('3');LCD_printc('2'); break; case 6:LCD_printc('+');LCD_printc('1');LCD_printc('5'); break; case 7:LCD_printc('+');LCD_printc('6');LCD_printc('2'); break; case 8:LCD_printc('+');LCD_printc('9');LCD_printc('0'); break; } LCD_set_position(0x4a);//LCD_printc('1');LCD_printc('2'); switch(jb4){ case 3:LCD_printc('-');LCD_printc('9');LCD_printc('0'); break; case 4:LCD_printc('-');LCD_printc('8');LCD_printc('0'); break; case 5:LCD_printc('-');LCD_printc('3');LCD_printc('2'); break; case 6:LCD_printc('+');LCD_printc('1');LCD_printc('5'); break; case 7:LCD_printc('+');LCD_printc('6');LCD_printc('2'); break; case 8:LCD_printc('+');LCD_printc('9');LCD_printc('0'); break; } } } void Timer0_isr(void) interrupt 3 using 1 { TH1=(65536-250)/256; TL1=(65536-250)%256; if(count<jb0) pwm1=1; else pwm1=0; if(count<jb2) pwm2=1; else pwm2=0; if(count<jb3) pwm3=1; else pwm3=0; if(count<jb4) pwm4=1; else pwm4=0; count++; count=count%80; }