/*
I2C LCD Bitbang printing 
"Hello i2c World!"
*/


#define SDA 4 // PIN A4 LCD
#define SCL 5 // PIN A5 LCD

//sets i2c pins as outputs and pulls both high for 1us
void i2c_start(){
  pinMode(SDA,OUTPUT);
  digitalWrite(SDA, 1);
  pinMode(SCL,OUTPUT);
  digitalWrite(SCL, 1);
  delayMicroseconds(1);
  digitalWrite(SDA, 0);
  digitalWrite(SCL, 0);
}

//i2c write function takes in 8 bit int
void i2c_write(uint8_t data){
  for(int i=7; i>=0; i--):
  digit
}


// sum function
int sum(int a, int b){ 
  return a + b;
}



void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

}

void loop() {
  // put your main code here, to run repeatedly:
 
  int total = sum(5,5);
  Serial.println(total);
}