/*
   Use of MAX72XX, DS1307 and DTH22 components to
   print some information on the display.

   for more examples:
   https://github.com/MajicDesigns/MD_Parola/tree/main/examples
   https://github.com/MajicDesigns/MD_MAX72XX/tree/main/examples
*/

// Header file includes
#include <TimeLib.h>
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#include <Wire.h>
#include "Font7Seg.h"


// Define the number of devices we have in the chain and the hardware interface
// NOTE: These pin numbers will probably not work with your hardware and may
// need to be adapted
#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 4 // Define the number of displays connected
#define CLK_PIN    13 // CLK or SCK
#define DATA_PIN   11 // DATA or MOSI
#define CS_PIN     10 // CS or SS
#define SPEED_TIME 75 // Speed of the transition
#define PAUSE_TIME  0
#define MAX_MESG   20

// These are for the clock
#define DS1307_ADDRESS 0x68

// These are for the temperature
#

// Global variables
uint8_t wday, mday, monthL, yearL;
uint8_t hours, minutes, seconds;

char szTime[9];    // mm:ss\0
char szMesg[MAX_MESG + 1] = "";


MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
auto md_max = P.getGraphicObject();

uint8_t clear = 0x00;
void beginDS1307()
{
  // Read the values ​​(date and time) of the DS1307 module
  Wire.beginTransmission(DS1307_ADDRESS);
  Wire.write(clear);
  Wire.endTransmission();
  Wire.requestFrom(DS1307_ADDRESS, 0x07);

  seconds = bcdToDec(Wire.read());
  minutes = bcdToDec(Wire.read());
  hours = bcdToDec(Wire.read() & 0xff);
  wday = bcdToDec(Wire.read());
  mday = bcdToDec(Wire.read());
  monthL = bcdToDec(Wire.read());
  yearL = bcdToDec(Wire.read());
}

uint8_t decToBcd(uint8_t value)
{
  return ((value / 10 * 16) + (value % 10));
}

uint8_t bcdToDec(uint8_t value)
{
  return ((value / 16 * 10) + (value % 16));
}

// Code for reading clock time
void getTime(char *psz, bool f = true)
{
  sprintf(psz, "%02d%c%02d", hours, (f ? ':' : ' '), minutes);
}


void setup(void)
{
  Wire.begin();
  Serial.begin(9600);
  P.begin(2);
  P.setInvert(false);

  P.setZone(0,  MAX_DEVICES - 4, MAX_DEVICES - 1);
  P.setZone(1, MAX_DEVICES - 4, MAX_DEVICES - 1);

  P.displayZoneText(1, szTime, PA_CENTER, SPEED_TIME, PAUSE_TIME, PA_PRINT, PA_NO_EFFECT);
  P.displayZoneText(0, szMesg, PA_CENTER, SPEED_TIME, 0, PA_PRINT, PA_NO_EFFECT);
}

void loop(void)
{
  static uint32_t lastTime = 0; // Memory (ms)
  static uint32_t  lastDSUpdate = 0; // Memory (ms)
  static bool flasher = false;  // Seconds passing flasher
  delay(1);
  if (!lastDSUpdate || (millis() - lastDSUpdate) > 500) {
    lastDSUpdate = millis();
    beginDS1307();
    setTime(hours, minutes, seconds, mday, monthL, yearL);
  }
  else hours = hour(), minutes = minute(), seconds = second();

  if (millis() - lastTime <= 1000)return;
  getTime(szMesg, flasher);
  if (P.displayAnimate())
    //if (P.getZoneStatus(0))
  {
    //Serial.println(seconds);
    P.setFont(0, numeric7Seg);
    P.setTextEffect(0, PA_PRINT, PA_NO_EFFECT);
    // P.setPause(0, 0);
    lastTime = millis();
    //getTime(szMesg, flasher);
    //if (P.isAnimationAdvanced()) {
      seconds <= 30 ? md_max->setPoint(7, seconds == 0 ? 1 : seconds, true) :
      md_max->setPoint(7, seconds == 31 ? 30 : 61 - seconds, true);
    //}
    flasher = !flasher;
    P.displayReset(0);
  }
}