Project #3 – LCD Shield – Mk2

1 X ChronoDot

1 X ProtoScrewShield

1 X Breadboard

4 X Jumper Wires Premium 3″ M/M

1 X CR1632

1 X Project #3 – LED Shield – Mk1

LCDShieldMk2.2.ino

// ***** Don Luc *****
// Software Version Information
// 2.2

// include the library code:
#include <Wire.h>
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>

Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();

// These #defines make it easy to set the backlight color
#define OFF 0x0
#define RED 0x1
#define YELLOW 0x3
#define GREEN 0x2
#define TEAL 0x6
#define BLUE 0x4
#define VIOLET 0x5
#define WHITE 0x7

uint8_t i = 0;

void loop() {
  
  timeChrono();

  uint8_t momentaryButton = RGBLCDShield.readButtons();

  if ( momentaryButton ) {
    
    RGBLCDShield.clear();
    RGBLCDShield.setCursor(0,0);
    
    if ( momentaryButton & BUTTON_UP ) {
      RGBLCDShield.print("GREEN - UP ");
      RGBLCDShield.setBacklight(GREEN);
    }
    
    if ( momentaryButton & BUTTON_DOWN ) {
      RGBLCDShield.print("RED - DOWN ");
      RGBLCDShield.setBacklight(RED);
    }
    
    if ( momentaryButton & BUTTON_LEFT ) {
      RGBLCDShield.print("BLUE - LEFT ");
      RGBLCDShield.setBacklight(BLUE);
    }
    
    if ( momentaryButton & BUTTON_RIGHT ) {
      RGBLCDShield.print("YELLOW - RIGHT ");
      RGBLCDShield.setBacklight(YELLOW);
    }
    
    if ( momentaryButton & BUTTON_SELECT ) {
      RGBLCDShield.print("OFF ");
      RGBLCDShield.setBacklight(OFF);
    }
        
  }
  
  delay(1000);
  
}

setup.ino

void setup() {

  // set up the LCD's number of columns and rows: 
  RGBLCDShield.begin(16, 2);
  RGBLCDShield.print("Don Luc!!!");
  RGBLCDShield.setBacklight(VIOLET);
  
  // ChronoDot
  setupChrono();    
  
}

ChronoDot.ino

void setupChrono() {

  // clear /EOSC bit
  // Sometimes necessary to ensure that the clock
  // keeps running on just battery power. 
  Wire.beginTransmission(0x68); // address DS3231
  Wire.write(0x0E); // select register
  Wire.write(0b00011100); // write register bitmap, bit 7 is /EOSC
  Wire.endTransmission();  

}

void timeChrono() {

  // set the cursor to column 0, line 1
  RGBLCDShield.setCursor(0, 1);
  
   // send request to receive data starting at register 0
  Wire.beginTransmission(0x68); // 0x68 is DS3231 device address
  Wire.write((byte)0); // start at register 0
  Wire.endTransmission();
  Wire.requestFrom(0x68, 3); // request three bytes (seconds, minutes, hours)
 
  while(Wire.available())
  { 

    int seconds = Wire.read(); // get seconds
    int minutes = Wire.read(); // get minutes
    int hours = Wire.read();   // get hours
 
    seconds = (((seconds & 0b11110000)>>4)*10 + (seconds & 0b00001111)); // convert BCD to decimal
    minutes = (((minutes & 0b11110000)>>4)*10 + (minutes & 0b00001111)); // convert BCD to decimal
    hours = (((hours & 0b00100000)>>5)*20 + ((hours & 0b00010000)>>4)*10 + (hours & 0b00001111)); // convert BCD to decimal (assume 24 hour mode)
 
    // print the number of seconds since reset:
    RGBLCDShield.print(hours);
    RGBLCDShield.print(":");
    RGBLCDShield.print(minutes);
    RGBLCDShield.print(":");
    RGBLCDShield.print(seconds);

  }
  
}

Don Luc