官方网站建设费用,做机械设备销售的那个网站好,wordpress squarespace,前端网站开发课程1、能够理解清楚单片机IO口的结构。 2)t1相当于PnP三级管#xff0c;t2相当于npn三极管
3#xff09; 强推挽io具有较强的驱动能力#xff0c;电流输出能力很强。 2、能够看懂上下拉电阻的电路应用#xff0c;并且熟练使用上下拉电阻。 3、理解28BYJ-48减速步进电机的工作…1、能够理解清楚单片机IO口的结构。 2)t1相当于PnP三级管t2相当于npn三极管
3 强推挽io具有较强的驱动能力电流输出能力很强。 2、能够看懂上下拉电阻的电路应用并且熟练使用上下拉电阻。 3、理解28BYJ-48减速步进电机的工作原理。 4、能够熟练编写步进电机正反转任意角度的程序。 #include REGX52.H
sbit MC0 P1^0;
sbit MC1 P1^1;
sbit MC2 P1^2;
sbit MC3 P1^3;
sbit MC4 P1^4;sbit KeyIn1 P2^4;
sbit KeyIn2 P2^5;
sbit KeyIn3 P2^6;
sbit KeyIn4 P2^7;sbit KeyOut1 P2^3;
sbit KeyOut2 P2^2;
sbit KeyOut3 P2^1;
sbit KeyOut4 P2^0;static unsigned long a;
unsigned char KeySta[4][4] { {1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}
};
unsigned char code KeyCodeMap[4][4] { { 0x31, 0x32, 0x33, 0x26 }, { 0x34, 0x35, 0x36, 0x25 }, { 0x37, 0x38, 0x39, 0x28 }, { 0x30, 0x1B, 0x0D, 0x27 }
};
void KeyDriver();
void main()
{EA 1; TMOD 0x01; TH0 0xFC; TL0 0x67;ET0 1; TR0 1; while(1)KeyDriver();
}
void StartMotor(signed long angle)
{EA 0;a angle*4076/360;EA 1;
}
void StopMotor()
{EA 0;a 0;EA 1;}
void KeyAction(unsigned char keycode)
{bit arr;if(keycode 0x30 keycode 0x39){if(arr 0) StartMotor(360*(int)(keycode-0x30));elseStartMotor(-360*(int)(keycode-0x30));}else if(keycode 0x26){arr 0;}else if(keycode 0x28){arr 1;}else if (keycode 0x25) {StartMotor(90);}else if (keycode 0x27) {StartMotor(-90);}else if (keycode 0x1B) {StopMotor();}}
void KeyDriver()
{unsigned char i, j;static unsigned char backup[4][4] { {1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}};for (i0; i4; i) {for (j0; j4; j){if (backup[i][j] ! KeySta[i][j]) {if (backup[i][j] ! 0) {KeyAction(KeyCodeMap[i][j]); }backup[i][j] KeySta[i][j]; }}}
}void KeyScan()
{static unsigned char add 0;unsigned char j ;static unsigned char keybuf[4][4] { {0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF},{0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF}};keybuf[add][0] (keybuf[add][0] 1) | KeyIn1;keybuf[add][1] (keybuf[add][1] 1) | KeyIn2;keybuf[add][2] (keybuf[add][2] 1) | KeyIn3;keybuf[add][3] (keybuf[add][3] 1) | KeyIn4;for(j 0;j 4;j){if( (keybuf[add][j] 0x0F) 0x00 ){KeySta[add][j] 0;}else if((keybuf[add][j] 0x0F) 0x0f){KeySta[add][j] 1;}}add;add add 0x03;switch(add){case 0:KeyOut4 1;KeyOut1 0;break;case 1:KeyOut1 1;KeyOut2 0;break;case 2:KeyOut2 1;KeyOut3 0;break;case 3:KeyOut3 1;KeyOut4 0;break;default:break;}
}void TurnMotor()
{static unsigned char index 0; static unsigned char tmp 0; unsigned char code BeatCode[8] { 0xE, 0xC, 0xD, 0x9, 0xB, 0x3, 0x7, 0x6};if(a ! 0){if(a 0){index;index index 0x07;a--; }else{index--;index index 0x07;a; }tmp P1;tmp tmp 0xF0;tmp tmp | BeatCode[index];P1 tmp;}else {P1 P1 | 0x0F;}
}
void InterruptTimer0() interrupt 1
{bit biv 0;TH0 0xFC; TL0 0x67; KeyScan(); biv ~biv;if (biv 1){TurnMotor();}
}5、学会蜂鸣器发声的方法。 #include REGX52.H
sbit BUZZ P1^6;
void openbuzz(unsigned char arr);
void stopbuzz();
unsigned int TORH;
unsigned int TORL;
void main()
{unsigned int i;EA 1;TMOD 0x01;while(1){openbuzz(4000);for(i 0;i 40000;i);stopbuzz();for(i 0;i 20000;i);openbuzz(1000);for(i 0;i 40000;i);stopbuzz();for(i 0;i 20000;i);}
}
void openbuzz(unsigned char arr)
{unsigned int reload;reload (65536)- (11059200/12)/(arr*2);TORH (unsigned int)(reload 8);TORL (unsigned int)reload;TH0 0xFF; TL0 0xFE;ET0 1;TR0 1;
}
void stopbuzz()
{ET0 0;TR0 0;
}
void InterruptTimer0() interrupt 1
{TH0 TORH; TL0 TORL;BUZZ ~BUZZ;
}
