enum PinAssignments {
  encoderPinA = 2, // ขา S1
  encoderPinB = 3, // ขา S2
  clearButton = 21  // ขา Key
                // จ่ายไฟที่ขา +5v และ gnd
                // Example For Arduino Uno By www.ArduinoAll.com
};

volatile unsigned int encoderPos = 0;  // สำหรับนับจำนวน
unsigned int lastReportedPos = 1;   // change management
static boolean rotating = false;    // debounce management
boolean A_set = true;
boolean B_set = true;

float f=10;
int n=200;
int nn=10;
int N=50;
int D=(f*n)/5;
int bendingtime=10000000;
int relaxtime=1000000;
int delay_entre_pas=2500;
volatile double waterFlow;
float temps;
unsigned long start;
unsigned long ended;
unsigned long duration;
int delta=0;
int lastReport=0;
int x=0;
int bending=1;
int i=0;
float speed=1000*f/duration;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(13, OUTPUT);
  pinMode(encoderPinA, INPUT_PULLUP); // กำหนดโหมดเป็นแบบ Input pullup
  pinMode(encoderPinB, INPUT_PULLUP);
  pinMode(clearButton, INPUT_PULLUP);
  pinMode(7, OUTPUT);
  pinMode(6, OUTPUT);
  attachInterrupt(0, doEncoderA, CHANGE); //ทำงานแบบ interrupt เบอร์ 0 ในนี้คือขา pin 2
  attachInterrupt(1, doEncoderB, CHANGE); //ทำงานแบบ interrupt เบอร์ 1 ในนี้คือขา pin 3
  attachInterrupt(2, bend, LOW);
  waterFlow=0;
  attachInterrupt(5,pulse,RISING);
  digitalWrite(7, HIGH);
  for(int e=0;e<2;e++){
    digitalWrite(6, HIGH);
    digitalWrite(6, LOW);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(13, HIGH);
}

//คำสั่งกด
void bend(){
  for(i=0;i<nn;i++){
    Serial.print("*Round ");
    Serial.print(i+1);
    delayMicroseconds(10000000);
    Serial.print(" Start bending*");
    Serial.print("\n");
    start=millis();
    digitalWrite(7,HIGH);
    digitalWrite(13, LOW);
    for(x=0;x<=D;x++){
      digitalWrite(6,HIGH);
      digitalWrite(6,LOW);
      delayMicroseconds(delay_entre_pas);
    }
    ended=millis();
    duration=ended-start;
    Serial.print(" End bending");
    Serial.print("\n");
    waterFlow=0;
    attachInterrupt(5,pulse,RISING);
    //delay(bendingtime);
    Serial.print(" -waterFlow:");
    Serial.print(1000000*waterFlow/bendingtime,3);
    Serial.println(" mL/s");
    Serial.print(" Start.relese");//début=start
    Serial.print("\n");
    digitalWrite(7,LOW);
    digitalWrite(13, HIGH);
    for (x=0;x<=D;x++){
      digitalWrite(6, HIGH);
      digitalWrite(6, LOW);
      delayMicroseconds(delay_entre_pas);
    }
    //delayMicroseconds(relaxtime);
    Serial.print(" End.relese");
    Serial.print("\n");
    waterFlow=0;
    attachInterrupt(5,pulse,RISING);
    Serial.print(" -waterFlow:");
    Serial.print(1000000*waterFlow/bendingtime,3);
    Serial.println(" mL/s");
  }
  Serial.print("--Bending time/relaxation= "); 
  Serial.print(duration);
  Serial.print(" ms--");
  Serial.print("\n");
  Serial.print("  System speed="); //system speed; vitesse=speed
  speed=1000*f/duration;
  Serial.print(speed, 2);
  Serial.print(" mm/s");
  Serial.print("\n");
  Serial.print("  Bending time=");//duration of the bending
  Serial.print(bendingtime);
  Serial.print(" ms");
  Serial.print("\n");
  Serial.print("  Relaxation time=");//duration of the realese
  Serial.print(relaxtime);
  Serial.print(" ms");
  Serial.print("\n");
  Serial.print("  arrow=");
  Serial.print(f);
  Serial.print(" mm.");
  Serial.print("\n");
  Serial.print("--------------------------------------------------");  
  Serial.print("\n");
  waterFlow=0;
  duration=0;
  start=0;
  ended=0;
  speed=0;
  
}

//waterFlow
void pulse(){
  waterFlow += 1.00 /(5880.00/2);

} 

// คำสั่งทำงานแบบ interrupt เมื่อมีการหมุน
void doEncoderA() {
  // debounce
  if ( rotating ) delay(1);  // หน่วงเวลาป้องกันสัญญาณรบกวน debounce
  // เช็คว่ามีบิดสวิตช์
  if ( digitalRead(encoderPinA) != A_set ) { // debounce once more
    A_set = !A_set;
    // adjust counter + if A leads B
    if ( A_set && !B_set )
    rotating = false;  // no more debouncing until loop() hits again 
    digitalWrite(7, LOW);
    for(int x=0;x<N;x++){
      digitalWrite(6, HIGH);
      digitalWrite(6, LOW);
      delayMicroseconds(delay_entre_pas);
    }  
  }
}


// Interrupt on B changing state, same as A above
void doEncoderB() {
  if ( rotating ) delay(1);
  if ( digitalRead(encoderPinB) != B_set ) {
    B_set = !B_set;
    //  adjust counter - 1 if B leads A
    if ( B_set && !A_set )
    rotating = false;
    digitalWrite(7, HIGH);
    for(int x=0;x<N;x++){
      digitalWrite(6, HIGH);
      digitalWrite(6, LOW);
      delayMicroseconds(delay_entre_pas);
    }  
  }
}