Updated sunrise functions; dynamic load calculatio

.gitignore

@@ -376,3 +376,13 @@ src/main.cpp
 .pio/libdeps/esp32dev/ArduinoJson/logo.svg
 .pio/libdeps/esp32dev/ArduinoJson/idf_component.yml
 .pio/libdeps/esp32dev/ArduinoJson/LICENSE.txt
+.pio/build/esp32dev/tmpahxafcje.tmp
+.pio/build/esp32dev/tmpahxafcje.tmp
+.pio/build/esp32dev/tmpao0pn_tn.tmp
+.pio/build/esp32dev/tmpezdmcyso.tmp
+.pio/build/esp32dev/tmpj2jtsnn0.tmp
+.pio/build/esp32dev/tmpn8d7uo8a.tmp
+.pio/build/esp32dev/tmpot58lxer.tmp
+.pio/build/esp32dev/tmpq6hmdh87.tmp
+.pio/build/esp32dev/tmpwft6of8y.tmp
+.pio/build/esp32dev/tmpahxafcje.tmp

README.md

@@ -1,12 +1,12 @@
-# ESP32_R4850g2
+# Solar Energy Manager for ESP32 (SEM.32)
 ![GitHub Repo stars](https://img.shields.io/github/stars/gropi75/ESP32_r4850g2?style=plastic)
 ![GitHub watchers](https://img.shields.io/github/watchers/gropi75/ESP32_r4850g2?style=plastic)
 ![GitHub forks](https://img.shields.io/github/forks/gropi75/ESP32_r4850g2?style=plastic)
 ![Release](https://img.shields.io/github/v/release/gropi75/ESP32_r4850g2?include_prereleases)
 
-ESP32 project to control the Huawei R4850G2 Power Supply and a Soyosource GNT1200 inverter for a solar powered LIFEPO4 48V battery pack
+SEM.32 (Solar Energy Manager 32) based on ESP32 controller, Soyosource Inverter, Huawei r4850g2 power supply, JK-BMS and 48V battery. It helps You to maximize the usage of self generated solar power.
+
 
-[TOC]
 
 # Main features:
 - control of inverter to minimize power usage out of the grid (over RS485)
@@ -31,11 +31,14 @@ ESP32 project to control the Huawei R4850G2 Power Supply and a Soyosource GNT120
   - Type: JK-BD6A20S8P
   - Software V.: V10.XY
   - Serial No: 2032812241
-- **Battary cells:**
+- **Battery cells:**
   - Type: EVE LF90 (3,2V 90AH, Nominal)
   - Datasheet No.: LF90-73103
   - Cut off Voltage: 3.65V/2.5V
   - Std. charge/Discharge: 1.0C
+- **Power Meter:**
+  - Type: Tasmota based smart meter from [Hitchi](https://www.photovoltaikforum.com/thread/173032-lesekopf-bei-heise-getestet/)
+
 
 - **Controller:**
   - ESPRESSIF ESP32-WROOM-32U (with ext. Antenna)

lib/PowerFunctions.h

@@ -3,3 +3,10 @@ int CalculatePower(int ActGridPower, int ActBatPower, int PowResCharger, int Max
 
 // Get actual power from the central power meter.
 int getActualPower(char ip[40], char cmd[40], char resp[20], char resp_power[20]);
+
+// calculate max inverter load to have a balanced discharge of the battery over the whole night
+int CalculateBalancedDischargePower(int capacity, float voltage, int actualSOC, int targetSOC, float sunset, float sunrise);
+
+// get solar prognosis
+float getSolarPrognosis(char token[40], char id[4], char today[9], char tomorrow[9]);
+

lib/secrets_dummy.h

@@ -0,0 +1,22 @@
+// rename this file to secrets.h
+
+const char g_WIFI_SSID[] = "SSID";
+const char g_WIFI_Passphrase[] = "password";
+
+char mqtt_server[40] = "192.168.188.80";
+char mqtt_port[6] = "1883";
+char current_clamp_ip[40] = "192.168.188.127";
+char current_clamp_cmd[40] = "/cm?cmnd=status+10";
+char sensor_resp[20] = "SML";                           // or "MT175"
+char sensor_resp_power[20] = "DJ_TPWRCURR";             // or "P"
+bool g_EnableMQTT = true;
+
+char solarprognose_token[40] = "token";         // token to get prognosis from http://www.solarprognose.de
+char solarprognose_id[4] = "999";
+
+// 
+float lagmorning=0;   // time in decimal hours between real sunset and start of PV
+float lagevening=0;     // time in decimal hours between end of PV power production and real sunset
+
+float laenge     = 9.1234; // Postition of PV
+float breite     = 48.9999; // Position of PV

lib/sunrise.h

@@ -1,4 +1,15 @@
+#ifndef sunrise_H
+#define sunrise_H
 
+struct TimeStruct {
+    float sunrise_today; // sunrise today
+    float sunset_today; // sunset today
+    float sunrise_tomorrow; // sunrise tomorrow
+    int day_of_week; // shows which day is today, Monday.... Sunday
+    char*  date_today; // date of today with format yyyymmdd (20230312)
+    char* date_tomorrow; // date for tomorro with format yyyymmdd (20230312)
+};
+void TimeData(struct TimeStruct *s,float lagmorning, float lagevening, float laenge, float breite);
 
 // Function to setup the time client
 void setuptimeClient ();
@@ -14,5 +25,26 @@ void setuptimeClient ();
 
 // This function figures out wethere PV can produce power or not
 // flag pvstartflag is true at daytime when pv can procuce power and false when PV can not produce power
-bool setPVstartflag(float lagmorning, float lagevening);
+bool setPVstartflag(float lagmorning, float lagevening, float laenge, float breite);
 
+// current time in decimal hours
+float factualtimeinhours(); 
+
+// add on  Issue in Github Provide time information #16 
+//float sunrisetoday(); // sunrise of current day in decimal hours including lag
+//float sunsettoday(); // sunset of current Day including lag
+//float sunrisetomorow(); // sunrise today of next day including lag
+//float actualtimeinhours(); // current time in decimal hours
+//int dayofweek(); //current day of week as integer 1 monday ... 7 sunday
+//char date_today(); // current datedate of today with format yyyymmdd (20230312)
+//char date_tomorow();// date of tomorow with format yyyymmdd (20230312)
+
+//float fstartpv(float lagmorning, float lagevening, float laenge, float breite); // time when PV starts producing= sunrise + lagmorning
+//float fstoppv(float lagmorning, float lagevening,float laenge, float breite); // time when PV stopps producing= sunset - lagevening
+//float fstartpvtomorow(float lagmorning, float lagevening,float laenge, float breite); // Time when PV starts producing next day= sunrise + lagmorning
+
+//int fweekday();  //function returns the current week day as a char
+//char* fdate_today();  // current date of today with format yyyymmdd (20230312)
+//char* fdate_tomorow(); // date of tomorow with format yyyymmdd (20230312)
+
+#endif //sunrise_H

src/PowerFunctions.cpp

@@ -5,6 +5,9 @@
 WiFiClient current_clamp_client; // or WiFiClientSecure for HTTPS; to connect to current sensor
 HTTPClient http;                 // to connect to current sensor
 
+WiFiClient solarprognose_client; // to connect to Solarprognose.de
+HTTPClient http_solar;
+
 // Positive ActPower means, we import power, so we need the inverter
 // Negative ActPower means, we export power, so we can charge the batter
 // Calculate the set power both for charger and inverter.
@@ -72,4 +75,42 @@ int getActualPower(char ip[40], char cmd[40], char resp[20], char resp_power[20]
         actPower = StatusSNS_SML[String(resp_power)]; // -2546
     }
     return actPower;
+}
+
+// calculate max inverter load to have a balanced discharge of the battery over the whole night
+int CalculateBalancedDischargePower(int capacity, float voltage, int actualSOC, int targetSOC, float sunset, float sunrise)
+{
+    // shall we use https://github.com/buelowp/sunset
+    return (int)(capacity * voltage * 0.01 * (actualSOC - targetSOC) / (sunrise - sunset + 24));
+}
+
+// get solar prognosis
+// http://www.solarprognose.de/web/solarprediction/api/v1?access-token=454jelfd&item=inverter&id=2&type=daily
+float getSolarPrognosis(char token[40], char id[4], char today[9], char tomorrow[9])
+{
+    float prognosis_today, prognosis_tomorrow;
+    char solarprognose_adress[83] = "http://www.solarprognose.de/web/solarprediction/api/v1?_format=json&access-token=";
+    http_solar.begin(solarprognose_client, solarprognose_adress + String(token) + "&item=location&id=" + String(id) + "&type=daily");
+    int httpCode = http_solar.GET(); // send the request
+    if (httpCode > 0)
+    {
+        String payload = http_solar.getString(); // Get the request response payload
+        StaticJsonDocument<768> doc;
+        Serial.println(payload);
+        DeserializationError error = deserializeJson(doc, payload);
+
+        if (error)
+        {
+            Serial.print("deserializeJson() failed: ");
+            Serial.println(error.c_str());
+            return 0;
+        }
+        prognosis_today = doc["data"][String(today)]; // 9.322
+        prognosis_tomorrow = doc["data"][String(tomorrow)]; // 20.653
+        Serial.println(String(today));
+        Serial.println(String(prognosis_today));
+        Serial.println(String(tomorrow));
+        Serial.println(String(prognosis_tomorrow));        
+    }
+    return prognosis_tomorrow;
 }