Main

Sunrise.h and displayhandler.h added
Platform ini updated

src/DisplayHandler.cpp

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+/*
+This Libary handles the data to the Display
+https://randomnerdtutorials.com/esp32-ssd1306-oled-display-arduino-ide/
+https://randomnerdtutorials.com/esp32-i2c-communication-arduino-ide/
+// Pinout Reference
+https://randomnerdtutorials.com/esp32-pinout-reference-gpios/ 
+https://randomnerdtutorials.com/esp32-i2c-communication-arduino-ide/
+
+// Display Driver SSD 1306
+// Size 0,96 Inch 128*64 pixel monocolour
+// Pin wiring
+//Vin 3,3V
+// GND GND#
+// SCL GPIO21 #define Display_I2C_SDA1 21
+// SDA GPIO22 #define Display_I2C_SLC1 22
+
+/*********
+  Rui Santos
+  Complete project details at https://randomnerdtutorials.com  
+*********/
+ #include <Wire.h>
+ //#include <spi.h>
+ #include <Adafruit_GFX.h>
+ #include <Adafruit_SSD1306.h>
+
+ #define SCREEN_WIDTH 128 // OLED display width, in pixels
+ #define SCREEN_HEIGHT 64 // OLED display height, in pixels 
+
+ // Declaration for an SSD1306 display connected to I2C (SDA GPIO21, SCL GPIO22 pins)
+ Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
+
+
+
+
+void setup_display(){
+
+
+  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
+    Serial.println(F("SSD1306 allocation failed"));
+    for(;;);
+  }
+  delay(2000);
+  display.clearDisplay();
+
+  display.setTextSize(2);
+  display.setTextColor(WHITE);
+  display.setCursor(0, 10);
+  // Display static text
+  display.println("Hui,");
+  display.println("Battary");
+  display.println("Storage!");
+
+  display.display(); 
+
+}

src/sunrise.cpp

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+
+
+#include <NTPClient.h>
+#include <WiFiUdp.h>
+
+
+#define PI 3.1415926536
+int dayofyear=0;
+
+// Define NTP Client to get time
+WiFiUDP ntpUDP;
+NTPClient timeClient(ntpUDP, "pool.ntp.org");
+
+//Week Days
+String weekDays[7]={"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
+
+//Month names
+String months[12]={"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};
+
+
+//________________________________________________________________________________________calculate sunrise and sunset
+// die folgenden Formeln wurden der Seite http://lexikon.astronomie.info/zeitgleichung/ entnommen
+
+
+// subfunction to compute Sonnendeklination
+float sonnendeklination(int T) {
+  // Deklination der Sonne in Radians
+  // Formula 2008 by Arnold(at)Barmettler.com, fit to 20 years of average declinations (2008-2017)
+ return 0.409526325277017*sin(0.0169060504029192*(T-80.0856919827619));
+}
+
+// subfunction to compute Zeitdifferenz
+// Dauer des halben Tagbogens in Stunden: Zeit von Sonnenaufgang (Hoehe h) bis zum hoechsten Stand im Sueden
+float zeitdifferenz(float Deklination, float B) {
+
+    return 12.0*acos((sin(-(50.0/60.0)*PI/180.0) - sin(B)*sin(Deklination)) / (cos(B)*cos(Deklination)))/PI;
+}
+
+// subfunction to compute Zeitgleichung
+float zeitgleichung(int T) {
+  return -0.170869921174742*sin(0.0336997028793971 * T + 0.465419984181394) - 0.129890681040717*sin(0.0178674832556871*T - 0.167936777524864);
+}
+
+// subfunction to compute sunrise
+float aufgang(int T, float B) {
+ float DK = sonnendeklination(T);
+ return 12 - zeitdifferenz(DK, B) - zeitgleichung(T);
+}
+
+// subfunction to compute sunset
+float untergang(int T, float B) {
+ float DK = sonnendeklination(T);
+ return 12 + zeitdifferenz(DK, B) - zeitgleichung(T);
+}
+
+// subfunction to compute it all  
+
+/*void initsunset(int T) {
+ float Laenge     = 10.98;
+ float Breite     = 48.25;
+ int   Zone       = 2; // Unterschied zu UTC-Zeit ( = 2 in der Sommerzeit, 1 in der Winterzeit )
+ float B = Breite*PI/180.0; // geogr. Breite in Radians
+ 
+ // Berechnung von Sonnenauf- und -Untergang
+ float Aufgang = aufgang(T, B); // Sonnenaufgang bei 0 Grad Laenge
+ float Untergang = untergang(T, B); // Sonnenuntergang bei 0 Grad Laenge
+
+ Aufgang = Aufgang   - Laenge /15.0 + Zone; // Sonnenaufgang bei gesuchter Laenge und Zeitzone in Stunden
+ Untergang = Untergang - Laenge /15.0 + Zone; // Sonnenuntergang bei gesuchter Laenge und Zeitzone in Stunden
+ Serial.print("Tag: ");Serial.print(T);
+ Serial.print(" Aufgang: ");Serial.print(Aufgang);Serial.print(" Untergang: ");Serial.println(Untergang);
+}
+*/
+float computeAufgang(int T, float Laenge, float Breite) {
+
+ int   Zone       = 1; // Unterschied zu UTC-Zeit ( = 2 in der Sommerzeit, 1 in der Winterzeit )
+ float B = Breite*PI/180.0; // geogr. Breite in Radians
+
+ // Berechnung von Sonnenaufgang
+ float Aufgang = aufgang(T, B); // Sonnenaufgang bei 0 Grad Laenge
+
+ Aufgang = Aufgang   - Laenge /15.0 + Zone; // Sonnenaufgang bei gesuchter Laenge und Zeitzone in Stunden
+ return Aufgang;
+}
+
+float computeUntergang(int T, float Laenge, float Breite) {
+
+ int   Zone       = 1; // Unterschied zu UTC-Zeit ( = 2 in der Sommerzeit, 1 in der Winterzeit )
+ float B = Breite*PI/180.0; // geogr. Breite in Radians
+
+ // Berechnung von Sonnenuntergang
+
+ float Untergang = untergang(T, B); // Sonnenuntergang bei 0 Grad Laenge
+
+ Untergang = Untergang - Laenge /15.0 + Zone; // Sonnenuntergang bei gesuchter Laenge und Zeitzone in Stunden
+ return Untergang;
+}
+
+//___________________________________________________________end calculate sunrise and sunset
+
+//_____________________________________________________________Calculate Day of year
+/*************************************************
+ Program to calculate day of year from the date
+ * 
+ * Enter date (MM/DD/YYYY): 12/30/2006
+ * Day of year: 364
+ *  
+ ************************************************/
+
+int caldayofyear(int day,int mon,int year)
+{
+    int  days_in_feb = 28;
+    int doy;    // day of year
+
+
+    doy = day;
+
+    // check for leap year
+    if( (year % 4 == 0 && year % 100 != 0 ) || (year % 400 == 0) )
+    {
+        days_in_feb = 29;
+    }
+
+    switch(mon)
+    {
+        case 2:
+            doy += 31;
+            break;
+        case 3:
+            doy += 31+days_in_feb;
+            break;
+        case 4:
+            doy += 31+days_in_feb+31;
+            break;
+        case 5:
+            doy += 31+days_in_feb+31+30;
+            break;
+        case 6:
+            doy += 31+days_in_feb+31+30+31;
+            break;
+        case 7:
+            doy += 31+days_in_feb+31+30+31+30;
+            break;            
+        case 8:
+            doy += 31+days_in_feb+31+30+31+30+31;
+            break;
+        case 9:
+            doy += 31+days_in_feb+31+30+31+30+31+31;
+            break;
+        case 10:
+            doy += 31+days_in_feb+31+30+31+30+31+31+30;            
+            break;            
+        case 11:
+            doy += 31+days_in_feb+31+30+31+30+31+31+30+31;            
+            break;                        
+        case 12:
+            doy += 31+days_in_feb+31+30+31+30+31+31+30+31+30;            
+            break;                                    
+    }
+
+
+
+    return doy; // return day of year 
+}
+//_________________________________________________________________End calculate day of year
+
+//____________________________________________________________________SetPV flag
+// this function calculates start and end of the PV production 
+// based on sunrise and sunset and a lag factor
+
+bool setPVstartflag(float lagmorning, float lagevening) 
+{
+bool pvstartflag=false;
+float startpv, stoppv;
+float laenge     = 9.0658; // Postition of PV
+float breite     = 48.7990; // Position of PV
+float currenttime; // this is the time in decimal hours i.e. 8.5
+
+
+timeClient.update();
+ time_t epochTime = timeClient.getEpochTime();
+ float currentHour = timeClient.getHours();// get current hour
+ float currentMinute = timeClient.getMinutes(); // get current menutes
+  struct tm *ptm = gmtime ((time_t *)&epochTime);
+     int monthDay = ptm->tm_mday;// get current day of the month
+     int currentMonth = ptm->tm_mon+1;//get current month
+     int currentYear = ptm->tm_year+1900; // get current year
+
+dayofyear=caldayofyear(monthDay,currentMonth,currentYear);// calculate current day of the year
+
+  startpv=computeAufgang(dayofyear, laenge, breite) + lagmorning; // statring time of pv 
+  stoppv=computeUntergang(dayofyear,laenge,breite)-lagevening; // stop time of PV
+
+currenttime=currentHour + (currentMinute/60); // calculate current ime in decimal hours
+
+// figure out wethere pv can produce power or not
+// flag pvstartflag is true at daytime when pv can procuce power
+if (currenttime>=startpv & currenttime<=stoppv){
+  pvstartflag=true;
+}else pvstartflag= false;
+
+//__________________________-Test ausgabe
+
+Serial.print ("Sonnenaufgang: ");
+Serial.println(computeAufgang(dayofyear, laenge, breite));
+Serial.print("Sonnenuntergang: ");
+Serial.println(computeUntergang(dayofyear,laenge,breite));
+
+
+Serial.print("Day of the year: ");
+Serial.println (dayofyear);
+
+Serial.print("Current minute: ");
+Serial.println (currentMinute);
+
+
+Serial.print("Current time decimal: ");
+Serial.println (currenttime);
+
+Serial.print("start PV: ");
+Serial.println (startpv);
+
+Serial.print("stoppv PV: ");
+Serial.println (stoppv);
+
+Serial.print("pvstartflag: ");
+Serial.println (pvstartflag);
+
+String currentDate = String(currentYear) + "-" + String(currentMonth) + "-" + String(monthDay);
+  Serial.print("Current date: ");
+  Serial.println(currentDate);
+
+return pvstartflag; // return pv start produce flag
+}
+
+
+//____________________________________________________________________end day of year
+
+
+//________________________________________________START NTP Client
+// Initialize a NTPClient to get time to calculate sunrise and sunset
+void setuptimeClient (){
+  // Set offset time in seconds to adjust for your timezone, for example:
+  // GMT +1 = 3600
+  // GMT +8 = 28800
+  // GMT -1 = -3600
+  // GMT 0 = 0
+  timeClient.begin();  
+  timeClient.setTimeOffset(3600);
+
+}
+//________________________________________________END NTP client