Lab 13/ HW 13

Lab 13 (LCD);

//LCD with Progress Bar
//Include the library code:
#include <LiquidCrystal.h>
#include <Wire.h>
//Initialize the library with the numbers of the interface pins
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
int temp_address = 73;
//Create the progress bar characters
byte p20[8] = {
  B10000,
  B10000,
  B10000,
  B10000,
  B10000,
  B10000,
  B10000,
  B10000,
};
byte p40[8] = {
  B11000,
  B11000,
  B11000,
  B11000,
  B11000,
  B11000,
  B11000,
  B11000,
};
byte p60[8] = {
  B11100,
  B11100,
  B11100,
  B11100,
  B11100,
  B11100,
  B11100,
  B11100,
};
byte p80[8] = {
  B11110,
  B11110,
  B11110,
  B11110,
  B11110,
  B11110,
  B11110,
  B11110,
};
byte p100[8] = {
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
};
void setup()
{
  //Set up the LCDs number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("ENGR6 Display");
  //Make progress characters
  lcd.createChar(0, p20);
  lcd.createChar(1, p40);
  lcd.createChar(2, p60);
  lcd.createChar(3, p80);
  lcd.createChar(4, p100);

  //initialze serial communication at 9600 bits/sec
  Serial.begin(9600);
  Wire.begin();
}
void loop()
{
  //read the input on pin A0
  int sensorValue = analogRead(A0);
  //print out the value you read
  Serial.println(sensorValue);

  //Move cursor to second line
  lcd.setCursor(0, 1);


  //Clear the line each time it reaches the end
  //with 16 " " (spaces)
  //lcd.print(" ");
  //Iterate through each character on the second line
 /* for (int i = 0; i < 16; i++)
  {
    //Iterate through each progress value for each character
    for (int j = 0; j < 5; j++)
    {
      lcd.setCursor(i, 1); //Move the cursor to this location
      lcd.write(j); //Update progress bar
      delay(100); //Wait
    }
  }*/

  //display specific button press based on values
  if(sensorValue == 740)
  {
    lcd.print("select          ");
  }
  if(sensorValue == 502)
  {
    lcd.print("left            ");
  }
   if(sensorValue == 142)
  {
    lcd.print("up              ");
  }
   if(sensorValue == 326)
  {
    lcd.print("down            ");
  }
   if(sensorValue == 0)
  {
    lcd.print("right           ");
  }

}



HW 13 (Pointers):

Pointer Program:
#include <stdio.h>
int i1, i2;
int *p1, *p2;
int main(void)
{
i1 = 5;
p1 = &i1;
i2 = *p1/2 + 10;
p2 = p1;
printf("The value of i1: %i\n\n", i1);
printf("The value of i2: %i\n\n", i2);
printf("The value of *p1: %i\n\n", *p1);
printf("The value of *p2: %i\n\n", *p2); 
return 0;
}