Arduino Nano 7SEG clock (RTC)+ temp. + humid

1/*Thanks to: Electronics-project-hub.com.
2implemented and modified  by Franchini Marco.
3frank8952@gmail.com*/
4
5#include <Adafruit_Sensor.h>
6#include  <DHT.h>
7#include <DHT_U.h>
8#include <SevSeg.h>
9DHT dht(A2,DHT22);
10SevSeg  Display; 
11char text[10][6]; 
12int i = 0;
13unsigned long timer;
14
15//----------------------SET  OROLOGIO
16const unsigned long period = 1000; //durata 1 sec.
17const unsigned  long led_period = 500; //durata lampeggio :
18unsigned long startMillis;
19unsigned  long led_startMillis;
20unsigned long currentMillis;
21unsigned long led_currentMillis;
22const  int hrs_btn = A0; //set ore
23const int min_btn = A1; //set minuti
24const int  ledPin = 13; //pin lampeggio :
25int Hrs = 0;
26int Min = 0;
27int Sec = 0;
28int  Time = 0000;
29int ledState = HIGH;
30
31void setup() {
32  pinMode(hrs_btn,  INPUT_PULLUP);
33  pinMode(min_btn, INPUT_PULLUP);
34  pinMode(ledPin, OUTPUT);
35  byte numDigits = 4;
36  byte digitPins[] = {12, 10, 9, 11};
37  //byte digitPins[]  = {11, 9, 10, 12};
38  byte segmentPins[] = {2, 3, 4, 5, 6, 7, 8,0};
39  bool  resistorsOnSegments = false; // 'false' means resistors are on digit pins
40  byte  hardwareConfig = COMMON_CATHODE; // See README.md for options
41  bool updateWithDelays  = false; // Default 'false' is Recommended
42  bool leadingZeros = true; // Use  'true' if you'd like to keep the leading zeros
43  bool disableDecPoint = true;  // Use 'true' if your decimal point doesn't exist or isn't connected
44  Display.begin(hardwareConfig,  numDigits, digitPins, segmentPins, resistorsOnSegments,
45  updateWithDelays, leadingZeros,  disableDecPoint);
46  Display.setBrightness(100);
47  dht.begin();
48  pinMode(ledPin,  OUTPUT); // PIN 13 lampeggio :
49  pinMode(A2, INPUT); // input DHT22
50 }
51  
52  void loop() 
53{    
54  char mychar[ ] = "ORA";
55  float hu = dht.readHumidity();
56  float t = dht.readTemperature();
57  float orario = Time;
58   
59      
60      
61      String e = String (mychar);           //memorizza mychar
62      String  f = e.substring (0,4);   //memorizza cifra a 4 digit 
63      f.toCharArray(text[1],5);       //visualizza come 1 (ARRAY)
64      
65      
66      orario=orario*10;
67      String c = String (orario);        //memorizza ora
68      String d = c.substring  (0,4);      //memorizza cifra a 4 digit 
69       d.toCharArray(text[2],5);        //visualizza  come 2 (ARRAY)
70      
71               
72      t=t*10;
73      String k =  String(t);             //memorizza t
74      String r = k.substring (0,3)+"*";  //memorizza cifra a 3 digit + C
75      r.toCharArray(text[3],5);       //visualizza  come 3 (ARRAY)
76      
77      
78      hu=hu*10;
79      String A = String(hu);           //memorizza hu
80      String B = A.substring(0,3)+"h"; //memorizza  cifra a 3 digit
81      B.toCharArray(text[4],5);        // visualizza come 4 (ARRAY)
82      
83       switch (i)
84{
85  case 1:
86      digitalWrite(ledPin, LOW);  //pin 13 on  Humid
87       break;
88   case 2:
89      digitalWrite(ledPin,  HIGH); //pin 13 off  ORA
90       break;
91   case 3:
92      digitalWrite(ledPin,  LOW);  //orario
93      Display.setNumber(Time);
94      if (digitalRead(hrs_btn)  == LOW){goto X;}
95        if (digitalRead(min_btn) == LOW){goto X;}
96        break;
97   case 4:
98      digitalWrite(ledPin, LOW);  //gradi
99       break;
100}
101     if (millis() > (timer + 6000)) //tempo di visualizzazione
102     {
103    switch(i);
104    Display.setChars(text[i]);
105    i++;
106    if (i >= 5) i = 1; // (ARRAY)conta  fino a 5 poi torna a 1
107    timer = millis();}
108    
109    //--------------------------------OROLOGIO
110
111  X:      currentMillis = millis();
112  if (currentMillis - startMillis >= period)
113  {
114    Sec = Sec + 1;
115    startMillis = currentMillis;
116  }
117  led_currentMillis  = millis();
118  if (led_currentMillis - led_startMillis >= led_period)
119  {  led_startMillis  = led_currentMillis;
120    
121    if (ledState == LOW) {   ledState = HIGH;
122      
123      if (digitalRead(hrs_btn) == LOW) //avanzamento ore
124      {  Hrs  = Hrs + 1; }
125      
126      if (digitalRead(min_btn) == LOW) //avanzamento min
127      {  Min = Min + 1;  Sec = 0; }
128    }
129    else
130    { ledState = LOW;  }
131    digitalWrite(ledPin, ledState);
132  }
133  if (Sec == 60)
134  {
135    Sec  = 0;
136    Min = Min + 1;
137  }
138  if (Min == 60)
139  {
140    Min = 0;
141    Hrs = Hrs + 1;
142  }
143  if (Hrs == 24) //12/24 ore
144  {
145    Hrs = 0;
146  }
147  Time = Hrs * 100 + Min;
148  
149   Display.refreshDisplay();
150}
151
152/*Thanks  to: Electronics-project-hub.com.
153implemented and modified by Franchini Marco.
154frank8952@gmail.com*/
155