12c5a60s2 实现3路PWM输出 占空比可调

/**********1602**********/ #include<reg52.h> #include<intrins.h> sbit RS = P2^2; sbit RW = P2^1; sbit E = P2^0; sbit k1 = P1^0; sbit k2 = P1^1; sbit k3 = P1^2; sbit k4 = P1^3; sbit p1 = P3^5; sbit p2 = P3^6; sbit p3 = P3^7; char mode=1; char bai,shi,ge; char t1=50; char t2=50; char t3=50; char t_t1,t_t2,t_t3,t_t; char tt1,tt2; #define Data P0 //数据端口 /******************************************************************/ /* 函数声明 */ /******************************************************************/ void Delay_ms(unsigned int ms)//delay_ms { unsigned char i; while(--ms) for(i=0;i<250;i++) { _nop_(); _nop_(); _nop_(); _nop_(); } } void Write_Command(unsigned char c) { Delay_ms(5);//short delay before operation E=0; RS=0; RW=0; _nop_(); E=1; Data=c; E=0; } /****************************************************************/ void Write_Data(unsigned char c) { Delay_ms(5); //short delay before operation E=0; RS=1; RW=0; _nop_(); E=1; Data=c; E=0; RS=0; } /**************************指定位置显示字节*******************************/ void Show_Char(unsigned char pos,unsigned char c) { unsigned char p; if (pos>0x10) p=pos+0xaf; //是第二行则命令代码高4位为0xc else p=pos+0x7f; //是第一行则命令代码高4位为0x8 Write_Command (p);//write command Write_Data (c); //write data } /*************************************************************************/ void Show_String (unsigned char pos,char *ptr) { while(*ptr!='\0') { Show_Char (pos++,*ptr++); //循环显示16个字符 } } /*********************************************************************/ void Init_Lcd1602() { Delay_ms(15); Write_Command(0x38); //display mode Write_Command(0x38); //display mode Write_Command(0x38); //display mode Write_Command(0x06); //显示光标移动位置 Write_Command(0x0c); //显示开及光标设置 Write_Command(0x01); //显示清屏 Delay_ms(15); } /*******************整屏右移******************** void Left_lcd1602() { unsigned char i; for(i=0;i<16;i++)//整屏右移 { Write_Command(0x18); Delay_ms(300); } } /*******************整屏左移**********************/ void Right_lcd1602() { unsigned char i; for(i=0;i<24;i++) // 整屏左移 { Write_Command(0x1c); (300); } } //******************************************************* / void show_mode(char a) { if(a==1) { Show_String(1,"mode1 *"); Show_String(17,"mode2"); } else if(a==2) { Show_String(1,"mode2 *"); Show_String(17,"mode3"); } else if(a==3) { Show_String(1,"mode3 *"); Show_String(17,"mode1"); } } void show_m1() { Show_String(1,"angle:"); Show_String(17,"distance:"); } int change(unsigned int a) //把票数转为字符型 { switch(a) { case 0: a=0x30;break; case 1: a=0x31;break; case 2: a=0x32;break; case 3: a=0x33;break; case 4: a=0x34;break; case 5: a=0x35;break; case 6: a=0x36;break; case 7: a=0x37;break; case 8: a=0x38;break; case 9: a=0x39;break; } return a; } void xianshi(char a,unsigned int d) { bai=d/100; shi=(d-100*bai)/10; ge=d%10; bai=change(bai); shi=change(shi); ge=change(ge); Show_Char(a,bai); Delay_ms(5); Show_Char(a+1,shi); Delay_ms(5); Show_Char(a+2,ge); Delay_ms(5); } void bijiao() { t_t1=t1;t_t2=t2;t_t3=t3; if(t_t1>t_t2) { t_t=t_t1; t_t1=t_t2; t_t2=t_t; } if(t_t2>t_t3) { t_t=t_t2; t_t2=t_t3; t_t3=t_t; } if(t_t1>t_t2) { t_t=t_t1; t_t1=t_t2; t_t2=t_t; } if(t_t2>t_t3) { t_t=t_t2; t_t2=t_t3; t_t3=t_t; } tt1=t_t2-t_t1; tt2=t_t3-t_t2; } void main(void) { int ang=0; //0-360 int distance=30; //30-60 int zhijing=15; //15-25 Init_Lcd1602(); Delay_ms(15); show_mode(mode); bijiao(); while(1) { p1=1; p2=1; p3=1; Delay_ms(t_t1); if(t_t1==t1) p1=0; if(t_t1==t2) p2=0; if(t_t1==t3) p3=0; // p1=0; if(tt1!=0) Delay_ms(tt1); if(t_t2==t1) p1=0; if(t_t2==t2) p2=0; if(t_t2==t3) p3=0; // p2=0; if(tt2!=0) Delay_ms(tt2); if(t_t3==t1) p1=0; if(t_t3==t2) p2=0; if(t_t3==t3) p3=0; // p3=0; Delay_ms(100-t_t3); if(t1>98) ////可调 t1=1; //// if(t2>98) ////可调 t2=1; //// if(t3>98) ////可调 t3=1; //// if(k1==0) { Delay_ms(100); t1++; bijiao(); } if(k2==0) { Delay_ms(100); t2++; bijiao(); } if(k3==0) { Delay_ms(100); t3++; bijiao(); } /* if(k1==0) { mode++; show_mode(mode); Delay_ms(700); } if(mode>=4) { mode=1; show_mode(mode); } if(mode==1&&k2==0) { Write_Command(0x01); //清屏 show_m1(); while(1) { xianshi(7,ang); if(k1==0) { Delay_ms(500); ang+=10; } if(ang>=361) ang=0; xianshi(26,distance); if(k3==0) { Delay_ms(500); distance++; } if(distance>=61) distance=30; if(k4==0) { Write_Command(0x01); show_mode(mode); break; } } } if(mode==2&&k2==0) { Write_Command(0x01); //清屏 while(1) { Show_String(1,"Auto working."); Delay_ms(1200); if(k4==0) { Write_Command(0x01); show_mode(mode); break; } Show_String(1,"Auto working...."); Delay_ms(1200); Write_Command(0x01); if(k4==0) { Write_Command(0x01); show_mode(mode); break; } } } if(mode==3&&k2==0) { Write_Command(0x01); //清屏 Show_String(1,"diameter:"); while(1) { xianshi(10,zhijing); if(k1==0) { zhijing++; Delay_ms(500); } if(zhijing>=36) zhijing=15; if(k4==0) { Write_Command(0x01); //清屏 show_mode(mode); break; } } } */ } }