Dormant Labs LCD PH Module V2 Arduino

gistfile1.txt

#include <Wire.h>
#include <stdlib.h>


#define PHADDRESS 0x4D
int RoomTempI2CAddress = B1001011;
float volt4 = 0.95;
float volt7 = 0.67;
float calibrationTempC = 20;



#define OLED_address  0x3c

unsigned char fill_OLED=0x55;

//========================
unsigned char myFont[][8]={
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
{0x00,0x00,0x5F,0x00,0x00,0x00,0x00,0x00},
{0x00,0x00,0x07,0x00,0x07,0x00,0x00,0x00},
{0x00,0x14,0x7F,0x14,0x7F,0x14,0x00,0x00},
{0x00,0x24,0x2A,0x7F,0x2A,0x12,0x00,0x00},
{0x00,0x23,0x13,0x08,0x64,0x62,0x00,0x00},
{0x00,0x36,0x49,0x55,0x22,0x50,0x00,0x00},
{0x00,0x00,0x05,0x03,0x00,0x00,0x00,0x00},
{0x00,0x1C,0x22,0x41,0x00,0x00,0x00,0x00},
{0x00,0x41,0x22,0x1C,0x00,0x00,0x00,0x00},
{0x00,0x08,0x2A,0x1C,0x2A,0x08,0x00,0x00},
{0x00,0x08,0x08,0x3E,0x08,0x08,0x00,0x00},
{0x00,0xA0,0x60,0x00,0x00,0x00,0x00,0x00},
{0x00,0x08,0x08,0x08,0x08,0x08,0x00,0x00},
{0x00,0x60,0x60,0x00,0x00,0x00,0x00,0x00},
{0x00,0x20,0x10,0x08,0x04,0x02,0x00,0x00},
{0x00,0x3E,0x51,0x49,0x45,0x3E,0x00,0x00},
{0x00,0x00,0x42,0x7F,0x40,0x00,0x00,0x00},
{0x00,0x62,0x51,0x49,0x49,0x46,0x00,0x00},
{0x00,0x22,0x41,0x49,0x49,0x36,0x00,0x00},
{0x00,0x18,0x14,0x12,0x7F,0x10,0x00,0x00},
{0x00,0x27,0x45,0x45,0x45,0x39,0x00,0x00},
{0x00,0x3C,0x4A,0x49,0x49,0x30,0x00,0x00},
{0x00,0x01,0x71,0x09,0x05,0x03,0x00,0x00},
{0x00,0x36,0x49,0x49,0x49,0x36,0x00,0x00},
{0x00,0x06,0x49,0x49,0x29,0x1E,0x00,0x00},
{0x00,0x00,0x36,0x36,0x00,0x00,0x00,0x00},
{0x00,0x00,0xAC,0x6C,0x00,0x00,0x00,0x00},
{0x00,0x08,0x14,0x22,0x41,0x00,0x00,0x00},
{0x00,0x14,0x14,0x14,0x14,0x14,0x00,0x00},
{0x00,0x41,0x22,0x14,0x08,0x00,0x00,0x00},
{0x00,0x02,0x01,0x51,0x09,0x06,0x00,0x00},
{0x00,0x32,0x49,0x79,0x41,0x3E,0x00,0x00},
{0x00,0x7E,0x09,0x09,0x09,0x7E,0x00,0x00},
{0x00,0x7F,0x49,0x49,0x49,0x36,0x00,0x00},
{0x00,0x3E,0x41,0x41,0x41,0x22,0x00,0x00},
{0x00,0x7F,0x41,0x41,0x22,0x1C,0x00,0x00},
{0x00,0x7F,0x49,0x49,0x49,0x41,0x00,0x00},
{0x00,0x7F,0x09,0x09,0x09,0x01,0x00,0x00},
{0x00,0x3E,0x41,0x41,0x51,0x72,0x00,0x00},
{0x00,0x7F,0x08,0x08,0x08,0x7F,0x00,0x00},
{0x00,0x41,0x7F,0x41,0x00,0x00,0x00,0x00},
{0x00,0x20,0x40,0x41,0x3F,0x01,0x00,0x00},
{0x00,0x7F,0x08,0x14,0x22,0x41,0x00,0x00},
{0x00,0x7F,0x40,0x40,0x40,0x40,0x00,0x00},
{0x00,0x7F,0x02,0x0C,0x02,0x7F,0x00,0x00},
{0x00,0x7F,0x04,0x08,0x10,0x7F,0x00,0x00},
{0x00,0x3E,0x41,0x41,0x41,0x3E,0x00,0x00},
{0x00,0x7F,0x09,0x09,0x09,0x06,0x00,0x00},
{0x00,0x3E,0x41,0x51,0x21,0x5E,0x00,0x00},
{0x00,0x7F,0x09,0x19,0x29,0x46,0x00,0x00},
{0x00,0x26,0x49,0x49,0x49,0x32,0x00,0x00},
{0x00,0x01,0x01,0x7F,0x01,0x01,0x00,0x00},
{0x00,0x3F,0x40,0x40,0x40,0x3F,0x00,0x00},
{0x00,0x1F,0x20,0x40,0x20,0x1F,0x00,0x00},
{0x00,0x3F,0x40,0x38,0x40,0x3F,0x00,0x00},
{0x00,0x63,0x14,0x08,0x14,0x63,0x00,0x00},
{0x00,0x03,0x04,0x78,0x04,0x03,0x00,0x00},
{0x00,0x61,0x51,0x49,0x45,0x43,0x00,0x00},
{0x00,0x7F,0x41,0x41,0x00,0x00,0x00,0x00},
{0x00,0x02,0x04,0x08,0x10,0x20,0x00,0x00},
{0x00,0x41,0x41,0x7F,0x00,0x00,0x00,0x00},
{0x00,0x04,0x02,0x01,0x02,0x04,0x00,0x00},
{0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00},
{0x00,0x01,0x02,0x04,0x00,0x00,0x00,0x00},
{0x00,0x20,0x54,0x54,0x54,0x78,0x00,0x00},
{0x00,0x7F,0x48,0x44,0x44,0x38,0x00,0x00},
{0x00,0x38,0x44,0x44,0x28,0x00,0x00,0x00},
{0x00,0x38,0x44,0x44,0x48,0x7F,0x00,0x00},
{0x00,0x38,0x54,0x54,0x54,0x18,0x00,0x00},
{0x00,0x08,0x7E,0x09,0x02,0x00,0x00,0x00},
{0x00,0x18,0xA4,0xA4,0xA4,0x7C,0x00,0x00},
{0x00,0x7F,0x08,0x04,0x04,0x78,0x00,0x00},
{0x00,0x00,0x7D,0x00,0x00,0x00,0x00,0x00},
{0x00,0x80,0x84,0x7D,0x00,0x00,0x00,0x00},
{0x00,0x7F,0x10,0x28,0x44,0x00,0x00,0x00},
{0x00,0x41,0x7F,0x40,0x00,0x00,0x00,0x00},
{0x00,0x7C,0x04,0x18,0x04,0x78,0x00,0x00},
{0x00,0x7C,0x08,0x04,0x7C,0x00,0x00,0x00},
{0x00,0x38,0x44,0x44,0x38,0x00,0x00,0x00},
{0x00,0xFC,0x24,0x24,0x18,0x00,0x00,0x00},
{0x00,0x18,0x24,0x24,0xFC,0x00,0x00,0x00},
{0x00,0x00,0x7C,0x08,0x04,0x00,0x00,0x00},
{0x00,0x48,0x54,0x54,0x24,0x00,0x00,0x00},
{0x00,0x04,0x7F,0x44,0x00,0x00,0x00,0x00},
{0x00,0x3C,0x40,0x40,0x7C,0x00,0x00,0x00},
{0x00,0x1C,0x20,0x40,0x20,0x1C,0x00,0x00},
{0x00,0x3C,0x40,0x30,0x40,0x3C,0x00,0x00},
{0x00,0x44,0x28,0x10,0x28,0x44,0x00,0x00},
{0x00,0x1C,0xA0,0xA0,0x7C,0x00,0x00,0x00},
{0x00,0x44,0x64,0x54,0x4C,0x44,0x00,0x00},
{0x00,0x08,0x36,0x41,0x00,0x00,0x00,0x00},
{0x00,0x00,0x7F,0x00,0x00,0x00,0x00,0x00},
{0x00,0x41,0x36,0x08,0x00,0x00,0x00,0x00},
{0x00,0x02,0x01,0x01,0x02,0x01,0x00,0x00},
{0x00,0x02,0x05,0x05,0x02,0x00,0x00,0x00} 
};



//extern unsigned char myFont[][8];
//extern unsigned char logo[];
extern unsigned char ip[];

//==========================================================//
void print_a_char(unsigned char ascii=0)
{
  unsigned char i=0;
  for(i=0;i<8;i++)
  {
    SendChar(myFont[ascii-0x20][i]);
  }
}

//==========================================================//
void setup()
{


}

//==========================================================//
void loop()
{
  
  Wire.begin();
  init_OLED();
  delay(10);
  clear_display();
  delay(50);
  
  Serial.begin(9600);
  SetRoomTemperataureResolutionBits(12);//12 bits room temp resolution in celcius
  
  int sampleSize = 500;
  
  double avgMeasuredPH = 0;
  double avgRoomTempC = 0;
  double avgPHVolts = 0;
  
  double tempAdjusted4;
  
  int x;
  for(x=0;x< sampleSize;x++)
  {
  
  double phVolt = getPHVolts();    
  tempAdjusted4 = adjustPHBasedOnTemp(4,calibrationTempC);
  double voltsPerPH = (abs(volt7-volt4)) / (7-tempAdjusted4);
  
  double realPHVolt = (volt7 - phVolt);
  double phUnits = realPHVolt / voltsPerPH;
  double measuredPH = 7 + phUnits;

   double roomTempC =  getRoomTemperatureC(); 
  
  avgMeasuredPH+=measuredPH;
  avgRoomTempC+=roomTempC;
  avgPHVolts += phVolt;
    
  
  }
  
  avgMeasuredPH/=sampleSize;
  avgRoomTempC/=sampleSize;
  avgPHVolts/=sampleSize;
  
  
  clear_display();
  delay(50);

  sendcommand(0x20);            //Set Memory Addressing Mode
  sendcommand(0x02);            //Set Memory Addressing Mode ab Page addressing mode(RESET)  
  sendcommand(0xa6);            //Set Normal Display (default)
  //====================SHOW FONTS ARRAY[1-4]=======================//
  char buffer[10];
  
  setXY(0,0);
  sendStr((unsigned char*)"avgPH=");
  setXY(0,6);
  dtostrf(avgMeasuredPH,4,2,buffer);
  sendStr((unsigned char*)buffer);

  avgMeasuredPH = adjustPHBasedOnTemp(avgMeasuredPH,avgRoomTempC);

  setXY(1,0);
  sendStr((unsigned char*)"AdjPH=");
  setXY(1,6);
  dtostrf(avgMeasuredPH,4,2,buffer);
  sendStr((unsigned char*)buffer);    
    
  setXY(2,0);
  sendStr((unsigned char*)"TempC=");
  setXY(2,6);
  dtostrf(avgRoomTempC,4,2,buffer);
  sendStr((unsigned char*)buffer);   

  setXY(3,0);
  sendStr((unsigned char*)"phVolts=");
  setXY(3,8);
  dtostrf(avgPHVolts,4,2,buffer);
  sendStr((unsigned char*)buffer);
    
    
  /*
  Serial.print("avgMeasuredPH-");
  Serial.print("avgMeasuredPH-");
  Serial.print(avgMeasuredPH,4);
  //Serial.print(" roomTempMeasuredPH-");
  //Serial.print(avgRoomTempMeasuredPH,4);
  Serial.print(" avgRoomtTempC-");
  Serial.print(avgRoomTempC,4);
  Serial.print(" avgPhVolts-");
  Serial.print(avgPHVolts,4);
  
  Serial.print(" 7CalVolts-");
  Serial.print(volt7,4);
  Serial.print(" 4CalVolts-");
  Serial.print(volt4,4);    
  Serial.print(" 4CalTempAdjusted-");
  Serial.println(tempAdjusted4,4);
  */
  
  
  /*
  setXY(2,3);
  sendStr(fill_string1);
  setXY(3,3);
  sendStr(fill_string2);
  setXY(4,3);
  sendStr(fill_string3);
  setXY(5,3);
  sendStr(fill_string4);*/
  
  

  delay(1000);  
  
}


//==========================================================//
void sendcommand(unsigned char com)
{
  Wire.beginTransmission(OLED_address);     //begin transmitting
  Wire.write(0x80);                          //command mode
  Wire.write(com);
  Wire.endTransmission();                    // stop transmitting
}

//==========================================================//
void clear_display(void)
{
  unsigned char i,k;
  for(k=0;k<8;k++)
  {	
    setXY(k,0);    
    {
      for(i=0;i<128;i++)     //clear all COL
      {
        SendChar(0);         //clear all COL
        //delay(10);
      }
    }
  }
}

//==========================================================//
void SendChar(unsigned char data)
{
  Wire.beginTransmission(OLED_address); // begin transmitting
  Wire.write(0x40);//data mode
  Wire.write(data);
  Wire.endTransmission();    // stop transmitting
}

//==========================================================//
void setXY(unsigned char row,unsigned char col)
{
  sendcommand(0xb0+row);                //set page address
  sendcommand(0x00+(8*col&0x0f));       //set low col address
  sendcommand(0x10+((8*col>>4)&0x0f));  //set high col address
}


//==========================================================//
void sendStr(unsigned char *string)
{
  unsigned char i=0;
  //setXY(0,0);    
  while(*string)
  {
    for(i=0;i<8;i++)
    {
      SendChar(myFont[*string-0x20][i]);

      // SendChar(*string);
      delay(10);
    }
    *string++;
  }
}

//==========================================================//
void init_OLED(void)
{

  sendcommand(0xae);		//display off
  delay(50); 
  //----------------------------REVERSE comments----------------------------//
  //  sendcommand(0xa0);		//seg re-map 0->127(default)
  //  sendcommand(0xa1);		//seg re-map 127->0
  //  sendcommand(0xc8);
  //  delay(1000);
  //----------------------------REVERSE comments----------------------------//
  
  sendcommand(0xaf);		//display on
  delay(50); 

}


float adjustPHBasedOnTemp(float PH, float temp)
{
    float difference = temp-25;
    float phAdjust = (0.009 * difference);
    float tempAdjustedPH = PH + phAdjust;
    return tempAdjustedPH;
}

double getPHVolts()
{
  byte ad_high;
  byte ad_low;
  
  Wire.requestFrom(PHADDRESS, 2);        //requests 2 bytes
  while(Wire.available() < 2);         //while two bytes to receive
    
  ad_high = Wire.read();           
  ad_low = Wire.read();
  double units = (ad_high * 256) + ad_low;
  
  double volts =  (units /4096)*3; 
  return volts;  
}

 
double getRoomTemperatureC()
{
  Wire.requestFrom(RoomTempI2CAddress,2);
  byte MSB = Wire.read();
  byte LSB = Wire.read();
 
  int TemperatureSum = ((MSB << 8) | LSB) >> 4;
  double celsius = TemperatureSum*0.0625;
  
  return celsius;
}
 
void SetRoomTemperataureResolutionBits(int ResolutionBits)
{
  if (ResolutionBits < 9 || ResolutionBits > 12) exit;
  Wire.beginTransmission(RoomTempI2CAddress);
  Wire.write(B00000001); //addresses the configuration register
  Wire.write((ResolutionBits-9) << 5); //writes the resolution bits
  Wire.endTransmission();
 
  Wire.beginTransmission(RoomTempI2CAddress); //resets to reading the temperature
  Wire.write((byte)0x00);
  Wire.endTransmission();
}