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lib/obp60task/OBP60Extensions.cpp

@@ -264,4 +264,37 @@ SensorData calcSunsetSunrise(double time, double date, double latitude, double l
     return returnset;
 }
 
+// Sun control (return valu by sun on sky = false, sun down = true)
+bool sunControl(double time, double date, double latitude, double longitude, double timezone){
+    SunRise sr;
+    int secPerHour = 3600;
+    int secPerYear = 86400;
+    sr.hasRise = false;
+    sr.hasSet = false;
+    time_t sunR = 0;
+    time_t sunS = 0;
+
+    // Calculate local time
+    time_t t = (date * secPerYear) + (time + int(timezone * secPerHour));
+
+    if (!isnan(time) && !isnan(date) && !isnan(latitude) && !isnan(longitude) && !isnan(timezone)) {             
+        sr.calculate(latitude, longitude, t);       // LAT, LON, EPOCH
+        // Sunrise
+        if (sr.hasRise) {
+            sunR = (sr.riseTime + int(timezone * secPerHour) + 30); // add 30 seconds: round to minutes
+        }
+        // Sunset
+        if (sr.hasSet)  {
+            sunS = (sr.setTime  + int(timezone * secPerHour) + 30); // add 30 seconds: round to minutes   
+        }
+    }
+    // Return values (sun on sky = false, sun down = true)
+    if(t > sunR && t < sunS){
+        return false;
+    }
+    else{
+        return true;
+    }
+}
+
 #endif

lib/obp60task/OBP60Extensions.h

@@ -43,5 +43,6 @@ void displayTrendLow(int16_t x, int16_t y, uint16_t size, uint16_t color);
 void displayHeader(CommonData &commonData, GwApi::BoatValue *date, GwApi::BoatValue *time); // Draw display header
 
 SensorData calcSunsetSunrise(double time, double date, double latitude, double longitude, double timezone); // Calulate sunset and sunrise
+bool sunControl(double time, double date, double latitude, double longitude, double timezone); // Control bit for sun
 
 #endif

lib/obp60task/obp60task.cpp

@@ -391,6 +391,13 @@ void OBP60Task(GwApi *api){
                 setPortPin(OBP_FLASH_LED, true);
             }
 
+            // Back light with sun control
+            if(String(backlight) == "Control by Sun"){
+                if(time->valid == true && date->valid == true && lat->valid == true && lon->valid == true){
+                    setPortPin(OBP_BACKLIGHT_LED, sunControl(time->value, date->value, lat->value, lon->value, tz.toDouble()));
+                }
+            }
+
             // Check the keyboard message
             int keyboardMessage=0;
             while (xQueueReceive(allParameters.queue,&keyboardMessage,0)){
@@ -441,11 +448,17 @@ void OBP60Task(GwApi *api){
                 LOG_DEBUG(GwLog::LOG,"set pagenumber to %d",pageNumber);
             }
 
-            // Calculate sunrise and sunset all 1s
+            // Calculate sunrise, sunset and backlight control with sun status all 1s
             if(millis() > starttime5 + 1000){
                 starttime5 = millis();
                 if(time->valid == true && date->valid == true && lat->valid == true && lon->valid == true){
                     commonData.data = calcSunsetSunrise(time->value , date->value, lat->value, lon->value, tz.toDouble());
+                    // Backlight with sun control
+                    if(String(backlight) == "Control by Sun"){
+                        if(time->valid == true && date->valid == true && lat->valid == true && lon->valid == true){
+                            setPortPin(OBP_BACKLIGHT_LED, sunControl(time->value, date->value, lat->value, lon->value, tz.toDouble()));
+                        }
+                    }
                 }
             }