/* 
WDMES I2C L.E.D. CONTROLLER
---------------------------
By Simon Dawes
---------------------------
This uses an I2C I/O Expansion board based on the PCF8574 IC
Default I2C address is 0x20 (all address switches set to 0)
SCl and SDA need pull up resisters ~4.7kOhm - 10kOhm
SDA to Pin A4 of Arduino nano
SCL to Pin A5 of Arduino nano
the PCF8574 GPIO board needs 5v

PCF8574 Sw Config
Pin 1 | Pin 2  | Pin 3 |Address
off     off      off     0x20
off     off      on      0x21

Currently supports 1 I2C Board - it will support more in the future
timing is scaled to OO guage ~1/76.1 (only roughly as Ive rounded quite a bit!)
LED's wired to 5v PCF8574 switches then to ground
*/
//  FILE:WDMES_LEDLIGHTS_CONTROL.ino

#include <Wire.h>
#include <PCF8574.h>

//const int PCF8574_address = 0x20;
PCF8574 PCF_01(0x20); 
// set below the digital pin to use to pause time
#define PausePin 6 //D6 Pauses when Pin is high (5v) 

int CurrentTime = 0;//holds the current hour the model is emulating
int CurrentDay = 0; //holds the current day of the week
const String DayOfWeek[7]={"Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"};
bool Pause = false;
// Change values of below for pull up or pull down on the LED's, the WDMES 00 guage model is LOW (0) = LED ON
const int ON = 0;
const int OFF = 1;

/*Scale is the amount of real time to pass in ms for 1 hour of  model time to pass, 
for an authentic experience scale should be set to 47000
i.e 47s in the model is one hour or 1 day in the model is 18.8 minutes
*/
const double Scale = 1000; //Change to 47000 to scale with OO Gauge

void setup() {
  // put your setup code here, to run once:
  Wire.begin();
  //set all Pins to Output (not sure this is actually necessary)
  PCF_01.begin();
  Serial.begin(9600);
  pinMode(PausePin,INPUT_PULLUP);//Set digital pin used for pause to input

  //perform a test on the connected PCF devices (o/p to serial port)
  PCFTest();

  //perform a start-up sequence

  //LightsTest();
  //message();

}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.print("CurrentTime: ");
  Serial.println(CurrentTime);
  //Serial.print("CurrentDay: ");
  //Serial.println(DayOfWeek[CurrentDay]);
  //get the 'models' time  

  if (CurrentTime == 0 ) {
    //night 00:00 - 07:00
    LightsNight();
  }

  if (CurrentTime == 7 ) {
    //Dawn Twilight 07:00-08:00
    Serial.print("Dawn - ");
    LightsTwilight(OFF);
  }

  if ((CurrentTime ==8 )){
    //Day  08:00 - 18:00
    Serial.print("Daytime - ");
    LightsDay();
  }
    if (CurrentTime == 18 ) {
    //Dusk Twilight 18:00-19:00
    Serial.print("Dusk - ");
    LightsTwilight(ON);
  }
  if ((CurrentTime ==19)){
    //Evening 19:00 - 23:00
    Serial.print("Evening - ");
    LightsEvening();
  } 
  if (CurrentTime == 23  ) {
    //Evening 23:00 - 00:00
    Serial.println("Bedtime - ");
    LightsBedtime();
  }
  //now wait until the next Model hour
  delay(Scale); 

  Pause = digitalRead(PausePin); 
  //Serial.print("Pause Status ");
  //Serial.println(Pause);
  if (Pause == false){
    // if Pause is false then increment time otherwise hour stays the same effectivly pausing time
    CurrentTime++;
  } else {
    Serial.println("Time Paused");
  }
  if (CurrentTime == 24  ) {
    //reset Start Time for model midnight
    CurrentTime = 0;
    CurrentDay ++;
    if (CurrentDay == 7){
      CurrentDay=0;
    }
    Serial.print("Day ");
    Serial.println(DayOfWeek[CurrentDay]);
    Serial.println("Midnight");
  }
}

//----------------------------------------------------------------------------------------------

void LightsNight() {
  //This is the Nighttime Lighting Sequence for all lights
  Serial.print("Night - ");
  //Street Lights On
  StreetLights(ON);
  //Building Lights Off
 //BuildingLights(OFF);

}

void LightsDay() {
  //This is the Daytime Lighting Sequence for all lights
  //StreetLights OFF
    StreetLights(OFF);
  //Building Lights Off
  //
 switch (CurrentDay){
  case 1: //Tuesday
    Serial.println("Welder On");
  break;
 
  case 3: //Thursday
    Serial.println("Welder On");
  break;

  case 6: //Sunday
    Serial.println("Welder On");
  break;
 }
}
void LightsTwilight(int Status) {
  //This is the Daytime Lighting Sequence
  int i = 0;
  int StreetLightNo;
  do {
    //this loop continues until all building lights are on
    //choose a building to light 
    StreetLightNo = random(8);
    if (PCF_01.read(StreetLightNo) != Status){
      //Light off so turn on
      StreetLight(StreetLightNo,Status);
      i++;
      Serial.print("Streetlight ");
      Serial.print(i);
      Serial.println("/8");
      //delay turning on next light by a random amount
      delay(random(100,2000));
    }

  } while (i < 8);//exit when all light are on

  //StreetLights(HIGH);
  //Building Lights Off
  //
    Serial.println("Twilight: Turn Welder Off");
}
void LightsEvening() {
  //This is the Evening Lighting Sequence
  //Street Lights On
    StreetLights(LOW);
  //Building Lights On

switch (CurrentDay){
   
  case 3: //Thursday
    Serial.println("Welder On");
  break;

 }
}
void LightsBedtime() {
  //This is the nighttime Lighting Sequence
  //StreetLights ON
    StreetLights(LOW);
  //Building Lights Off
  //
 Serial.println("Welder Off");
}

void StreetLights(int Status){
  //Turns street lights on or off
  //put here the ports that will be used for street lights
  for (int i = 0; i<=7 ; i++){
    StreetLight(i,Status);
  }

}

 void StreetLight(int LED, int Status){
  //set an LED acording to Status
  //LED = 0-7 this is a port on the PCF8574 board
  //Status os either LOW, HIGH, ON or OFF
    PCF_01.write(LED,Status);  
 }

void AllLEDOn() {
  for (int i = 0; i<=7 ; i++){
    PCF_01.write(i,ON);
  }
}

void AllLEDOff() {
  for (int i = 0; i<=7 ; i++){
    PCF_01.write(i,OFF);
  }
}
void PCFTest(){
    Serial.println(__FILE__);
  Serial.print("PCF8574_LIB_VERSION:\t");
  Serial.println(PCF8574_LIB_VERSION);
  // check we can see the I2C PCF8574 module return result on serial port
  if (!PCF_01.begin())
  {
    Serial.println("could not initialize...");
  }

  if (!PCF_01.isConnected()) {
    Serial.println("=> not connected");
  }
  else
  {
    Serial.println("=> connected!!");
  }
}

void LightsTest(){
  Serial.println("Lights Test Starts");
    for (int i = 0; i<=2; i++){
    AllLEDOn();
    delay (1000);
    AllLEDOff();
    delay(1000);
  }
    for (int i = 0; i<=4; i++){
    AllLEDOn();
    delay (500);
    AllLEDOff();
    delay(500);
  }
    for (int i = 0; i<=9; i++){
    AllLEDOn();
    delay (200);
    AllLEDOff();
    delay(200);
  }
    for (int i = 0; i<=9; i++){
    AllLEDOn();
    delay (50);
    AllLEDOff();
    delay(50);
  }
Serial.println("Lights Test Ends");
}

void message(){
  //Test LED Message in More Code :-)
  Serial.println("Message Starts");
  int myValues[]={
   1,3,3,-1,1,-1,1,3,1,1,-1,3,1,3,1,-1,3,3,3,-1,3,3,-1,1,-1,-3,-1,3,-1,3,3,3,-1,-3,-1,1,3,3,-1,1,3,1,3,1,3,-1,3,1,1,-1,1,3,1,3,1,3,-1,3,3,
   -1,1,3,1,3,1,3,-1,1,-1,1,3,1,3,1,3,-1,1,1,1,-1,1,3,1,3,1,3,-1,-3,-1,3,3,3,-1,3,3,3,-1,-3,-1,3,3,1,-1,1,3,-1,1,1,3,-1,3,3,1,-1,1,-1,-3,
   -1,1,3,1,-1,1,3,-1,1,1,-1,1,3,1,1,-1,1,3,3,-1,1,3,-1,3,1,3,3,-1,3,1,3,1,3,3
    };
 //Serial.print("Size of array ");
//Serial.print(sizeof(myValues));
// this for loop works correctly with an array of any type or size
  for (byte i = 0; i < (sizeof(myValues) / sizeof(myValues[0])); i++) {
  // do something with myValues[i]
    if (myValues[i] > 0){
      AllLEDOn();
    } else {
      AllLEDOff();
    }
    Serial.print(i);
    Serial.print("A:");
    Serial.print(myValues[i]);
    Serial.println(",");
    delay(abs(myValues[i])*10);
    
  }
  Serial.println("Message ends");

}