Tomáš Nitronaut Hora - matrix hodiny

#define USE_DS1307  0

#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#include "Font7Seg.h"

#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_CLK_ZONES 2
#define ZONE_SIZE 8
#define MAX_DEVICES (MAX_CLK_ZONES * ZONE_SIZE)

#define ZONE_UPPER  1
#define ZONE_LOWER  0

#define CLK_PIN   13
#define DATA_PIN  11
#define CS_PIN    10

#if USE_DS1307
#include <MD_DS1307.h>
#include <Wire.h>
#endif

MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

#define SPEED_TIME  75
#define PAUSE_TIME  0
#define MAX_MESG  6
#define  DEBUG  0

char  szTimeL[MAX_MESG];    // mm:ss\0
char  szTimeH[MAX_MESG];

void getTime(char *psz, bool f = true){
#if USE_DS1307
  RTC.readTime();
  sprintf(psz, "%02d%c%02d", RTC.h, (f ? ':' : ' '), RTC.m);
#else
  uint16_t  h, m;
  m = millis()/1000;
  h = (m/60) % 24;
  m %= 60;
  sprintf(psz, "%02d%c%02d", h, (f ? ':' : ' '), m);
#endif
}

void createHString(char *pH, char *pL)
{
  for (; *pL != '\0'; pL++)
    *pH++ = *pL | 0x80;   // offset character
  *pH = '\0'; // terminate the string
}

void setup(void)
{
  P.begin(MAX_CLK_ZONES);
  P.setZone(ZONE_LOWER, 0, ZONE_SIZE - 1);
  P.setZone(ZONE_UPPER, ZONE_SIZE, MAX_DEVICES - 1);
  P.setFont(numeric7SegDouble);
  P.setCharSpacing(P.getCharSpacing() * 2);
  P.setZoneEffect(ZONE_UPPER, true, 2);
  P.setZoneEffect(ZONE_LOWER, false, 0);
  P.displayZoneText(ZONE_LOWER, szTimeL, PA_CENTER, SPEED_TIME, PAUSE_TIME, PA_PRINT, PA_NO_EFFECT);
  P.displayZoneText(ZONE_UPPER, szTimeH, PA_CENTER, SPEED_TIME, PAUSE_TIME, PA_PRINT, PA_NO_EFFECT);

#if USE_DS1307
  RTC.control(DS1307_CLOCK_HALT, DS1307_OFF);
  RTC.control(DS1307_12H, DS1307_OFF);
#endif
}

void loop(void)
{
  static uint32_t   lastTime = 0; // millis() memory
  static bool   flasher = false;  // seconds passing flasher

  P.displayAnimate();
  if (P.getZoneStatus(ZONE_LOWER) && P.getZoneStatus(ZONE_UPPER))
  {
    if (millis() - lastTime >= 1000)
    {
      lastTime = millis();
      getTime(szTimeL, flasher);
      createHString(szTimeH, szTimeL);
      flasher = !flasher;
      P.displayReset();
      P.synchZoneStart();
    }
  }
}