//没有算法，只是简单的if选择完成的
int analogPinq = A0; // potentiometer wiper (middle terminal) connected to analog pin 3
int analogPinw = A1;// outside leads to ground and +5V
int val = 0; // variable to store the value read
int vak = 0 ;
int vall = 0; // variable to store the value read
int vakk = 0 ;
int ena = 40;
int IN1 = 39;
int IN2 = 38;
int IN3 = 37;
int IN4 = 36;
int enb = 35;
int a=1;
int b=1;
int i;
void setup()
{
Serial.begin(9600); // setup serial
pinMode(ena,OUTPUT);
pinMode(enb,OUTPUT);
pinMode(IN1,OUTPUT);
pinMode(IN2,OUTPUT);
pinMode(IN3,OUTPUT);
pinMode(IN4,OUTPUT);
digitalWrite(ena,LOW);
digitalWrite(ena,LOW);
}
void loop()
{
vall= digitalRead(analogPinq);
val = analogRead(analogPinq);
vakk= digitalRead(analogPinw);
vak = analogRead(analogPinw) ; //read the input pin
Serial.print(val); // debug value
Serial.print("\t");
Serial.print(vall);
Serial.print("\t");
Serial.print(vak);
Serial.print("\t");
Serial.println(vakk);
/* for(i=0;i<=255;i++)
{
a=i;
b=i;
}*/
if (vall==0 && vakk==0)
{
/*digitalWrite(ena,1);
digitalWrite(enb,1);
analogWrite(ena,a);
analogWrite(enb,b);*/
analogWrite(IN1,120);
analogWrite(IN2,0);
analogWrite(IN3,120);
analogWrite(IN4,0);
}
if (vall==0 && vakk==1)
{
/* digitalWrite(ena,1);
digitalWrite(enb,1);
analogWrite(ena,a);
analogWrite(enb,b);*/
analogWrite(IN1,0);
analogWrite(IN2,0);
analogWrite(IN3,120);
analogWrite(IN4,0);
}
if (vall==1 && vakk==0)
{
/* digitalWrite(ena,1);
digitalWrite(enb,1);
analogWrite(ena,a);
analogWrite(enb,b); */
analogWrite(IN1,120);
analogWrite(IN2,0);
analogWrite(IN3,0);
analogWrite(IN4,0);
}
if (vall==1 && vakk==1)
{
/* digitalWrite(ena,1);
digitalWrite(enb,1);
analogWrite(ena,a);
analogWrite(enb,b); */
digitalWrite(IN1,0);
digitalWrite(IN2,0);
digitalWrite(IN3,0);
digitalWrite(IN4,0);
}
}
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