1  #include <Arduino.h>
  2  
  3  
  4  #if defined(CONFIG_IDF_TARGET_ESP32S3)
  5  #elif defined(CONFIG_IDF_TARGET_ESP32C3)
  6  #error Pins have not yet been defined for ESP32C3
  7  #else
  8  #error Unkown board
  9  #endif
 10  
 11  static String string = "";
 12  
 13  // The potentiometer we use for setting the cycle frequency
 14  int FreqSensor  = A0;
 15  // The potentiometer we use for getting the Vacuum / Atmosphere time distribution
 16  int DistSensor  = A1;
 17  // The LED that represents Vacuum
 18  int ledVacPin   = 2;
 19  // The LED that represents Atmosphere
 20  int ledAtmPin   = 4;
 21  // The initial value of the Frequency
 22  float FreqValue = 0;
 23  // The initial value of the Distribution
 24  float DistValue = 0;
 25  int repeats = 0;
 26  
 27  void setup()
 28  {
 29      Serial.begin(9600);
 30  //    while(!Serial.available());
 31      Serial.println("setup");
 32      // Assign both of our test LEDs as outputs
 33      pinMode(ledVacPin, OUTPUT);
 34      Serial.println("After VacPin");
 35      pinMode(ledAtmPin, OUTPUT);
 36      Serial.println("After AtmPin");
 37  }
 38  
 39  void loop()
 40  {
 41      //Serial.println("start of loop");
 42      //Serial.println("test");
 43      // Get the Frequency value from our first potentiometer
 44      FreqValue = analogRead(FreqSensor);
 45      //Serial.println("read freq as: ");
 46      //Serial.println(FreqValue);
 47      //String string = String("\n\n") + String("read freq as: ") + String(FreqValue) + "\n";
 48      // Get the Distribution value from our second potentiometer
 49      DistValue = analogRead(DistSensor);
 50      //Serial.println("read dist as: ");
 51      //Serial.println(DistValue);
 52      string = string + String("read dist as: ") + String(DistValue) + "\n";
 53      Serial.println(string);
 54  
 55      delay(100);
 56      /*
 57      // Cast the value we read from the potentiometer from a range of 0-1023 to a range of 20-150
 58      // This represents the number of cycles of Vacuum->Atmosphere we want per minute.
 59      float cyclesPerMinute = ((FreqValue / 1023) * 160) + 20;
 60      // The total combined time the LEDs will be on (in ms) for one cycle
 61      float totalDelayInCycle = (60 / cyclesPerMinute) * 1000;
 62      */
 63  
 64      // The total combined time the LEDs will be on (in ms) for one cycle
 65      float cycleDuration = (60 / (((FreqValue / 4095) * 130) + 20)) * 1000; // 160 for lower minimum duration, 130 for 0.4 minimum overall duration
 66      //Serial.println("cycleDuration calculated");
 67      /*
 68      // To get the % of time we spend with Vacuum, we work out the potentiometer value as a percentage of its maximum value
 69      float cycleSplit = DistValue / 1023;
 70      // If we want a minimum "on-time" value, we need to fudge the numbers a bit
 71      // We can do this by adding a buffer to the value we read in, and double that to the 'total' we use to work out our percentage, meaning we can never get 0% or 100%
 72      // Then split this between the Vacuum and Atmosphere duration values
 73      */
 74      float minBuffer = 50;
 75      float cycleSplit = ((DistValue + minBuffer) / (4095 + (minBuffer * 2)));
 76      float VacuumDuration = cycleDuration * cycleSplit;
 77      float AtmosphereDuration = cycleDuration - VacuumDuration;
 78      bool enableForceMin = false;
 79      //Serial.println("values set");
 80  
 81      // Use this to force a minimum duration if the valve misbehaves
 82      if (enableForceMin)
 83      {
 84          //Serial.println("forceMin enabled");
 85  
 86          if (VacuumDuration < 200)
 87          {
 88              VacuumDuration = 200;
 89          }
 90          if (AtmosphereDuration < 200)
 91          {
 92              AtmosphereDuration = 200;
 93          }
 94          //Serial.println("values modified for forceMin");
 95  
 96      }
 97  
 98      // Turn on Vacuum for the specified duration
 99      digitalWrite(ledVacPin, HIGH);
100      //Serial.println("ledVacPin high");
101  
102      delay((float)(VacuumDuration));
103      digitalWrite(ledVacPin, LOW);
104      //Serial.println("ledVacPin low");
105  
106      // Turn on Atmosphere for the specified duration
107      digitalWrite(ledAtmPin, HIGH);
108      //Serial.println("ledAtmPin high");
109      //Serial.println(AtmosphereDuration);
110  
111      delay((float)(AtmosphereDuration));
112      //Serial.println("AtmosDelay");
113  
114      digitalWrite(ledAtmPin, LOW);
115      //Serial.println("ledAtmPin low");
116  }