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int cadInt = 0;  //    0=pin2
int ledGreen = 10;  //   
int ledRed = 11;  //   

int count = 0;  //  
int lastCount;  //      
int count4period;  //     

//           :
long time;  //       
long lastTime;  //      
int period;  //   

void setup() {
  pinMode (cadInt, INPUT);  //   ()  
  pinMode (ledGreen, OUTPUT);  //    
  pinMode (ledRed, OUTPUT);  //  
  
  attachInterrupt(cadInt, swap, RISING);
  
  lastTime = millis();  //     
  
  Serial.begin(9600);  //     
}

void swap() {
  count = count+1;
}

void loop() {
  delay(5000);
  
  count4period = count - lastCount;
  
  time = millis();  //      
  period = time - lastTime;  //      
 
  Serial.println(period);  //     
  Serial.println(count4period);  //     
  
  if (count4period >= 6 && count4period <= 9)
  {
    Serial.println ("Green");  //     
    digitalWrite(ledGreen, HIGH);
    digitalWrite(ledRed, LOW);
    } else {
        if(count4period > 9){
        Serial.println ("Red");  //     
        digitalWrite(ledGreen, LOW);
        digitalWrite(ledRed, HIGH);
        } else {
          Serial.println ("LOW CADENCE");  //     
          digitalWrite(ledGreen, LOW);
          digitalWrite(ledRed, LOW);
        }
     }
      
  lastTime = time;  //     
  lastCount = count;  
}

int cadInt = 0;  //    0=pin2
int ledGreen = 10;  //   
int ledRed = 11;  //   

int count = 0;  //  
int lastCount = 0;  //      
int count4period = 0;  //     

void setup() {
  pinMode (cadInt, INPUT);  //   ()  
  pinMode (ledGreen, OUTPUT);  //    
  pinMode (ledRed, OUTPUT);  //  
  
  attachInterrupt(cadInt, swap, RISING);
}

void swap() {
  count = count+1;
}

void loop() {
  delay(5000);
  
  count4period = count - lastCount;
  
  if (count4period >= 6 && count4period <= 9) {
    digitalWrite(ledGreen, HIGH);
    digitalWrite(ledRed, LOW);
    } else {
        if(count4period > 9){
        digitalWrite(ledGreen, LOW);
        digitalWrite(ledRed, HIGH);
        } else {
          digitalWrite(ledGreen, LOW);
          digitalWrite(ledRed, LOW);
        }
    }
      
  lastCount = count;  
}