Merge pull request #183 from thooge/alarm

Preparation for upcoming alarm functionality

lib/obp60task/OBP60Extensions.cpp

@@ -300,6 +300,49 @@ void fillPoly4(const std::vector<Point>& p4, uint16_t color) {
     getdisplay().fillTriangle(p4[0].x, p4[0].y, p4[2].x, p4[2].y, p4[3].x, p4[3].y, color);
 }
 
+// Split string into words, whitespace separated
+std::vector<String> split(const String &s) {
+    std::vector<String> words;
+    String word = "";
+    for (size_t i = 0; i < s.length(); i++) {
+        if (s[i] == ' ' || s[i] == '\t' || s[i] == '\r' || s[i] == '\n')  {
+            if (word.length() > 0) {
+                words.push_back(word);
+                word = "";
+            }
+        } else {
+             word += s[i];
+        }
+    }
+    if (word.length() > 0) {
+        words.push_back(word);
+    }
+    return words;
+}
+
+// Wordwrap single line, monospaced font
+std::vector<String> wordwrap(String &line, uint16_t maxwidth) {
+    std::vector<String> lines;
+    std::vector<String> words = split(line);
+    String currentLine = "";
+    for (const auto& word : words) {
+        if (currentLine.length() + word.length() + 1 > maxwidth) {
+             if (currentLine.length() > 0) {
+                  lines.push_back(currentLine);
+                  currentLine = "";
+             }
+        }
+        if (currentLine.length() > 0) {
+            currentLine += " ";
+        }
+        currentLine += word;
+    }
+    if (currentLine.length() > 0) {
+        lines.push_back(currentLine);
+    }
+    return lines;
+}
+
 // Draw centered text
 void drawTextCenter(int16_t cx, int16_t cy, String text) {
     int16_t x1, y1;
@@ -545,6 +588,47 @@ void displayFooter(CommonData &commonData) {
 #endif
 }
 
+// Alarm overlay, to be drawn as very last draw operation
+void displayAlarm(CommonData &commonData) {
+
+    const uint16_t x = 50;   // overlay area
+    const uint16_t y = 100;
+    const uint16_t w = 300;
+    const uint16_t h = 150;
+
+    getdisplay().setFont(&Atari16px);
+    getdisplay().setTextColor(commonData.fgcolor);
+
+    // overlay
+    getdisplay().drawRect(x, y, w, h, commonData.fgcolor);
+    getdisplay().fillRect(x + 1, y + 1, w - 1, h - 1, commonData.bgcolor);
+    getdisplay().drawRect(x + 3, y + 3, w - 5, h - 5, commonData.fgcolor);
+
+    // exclamation icon in left top corner
+    getdisplay().drawXBitmap(x + 16, y + 16, exclamation_bits, exclamation_width, exclamation_height, commonData.fgcolor);
+
+    // title
+    getdisplay().setCursor(x + 64, y + 30);
+    getdisplay().print("A L A R M");
+    getdisplay().setCursor(x + 64, y + 48);
+    getdisplay().print("#" + commonData.alarm.id);
+    getdisplay().print(" from ");
+    getdisplay().print(commonData.alarm.source);
+
+    // message, but maximum 4 lines
+    std::vector<String> lines = wordwrap (commonData.alarm.message, w - 16 - 8 / 8);
+    int n = 0;
+    for (const auto& l : lines) {
+        getdisplay().setCursor(x + 16, y + 80 + n);
+        getdisplay().print(l);
+        n += 16;
+        if (n > 64) {
+            break;
+        }
+    }
+    drawTextCenter(x + w / 2,  y + h - 16, "Press button 1 to dismiss alarm");
+}
+
 // Sunset und sunrise calculation
 SunData calcSunsetSunrise(double time, double date, double latitude, double longitude, float timezone){
     SunData returnset;

lib/obp60task/OBP60Extensions.h

@@ -57,6 +57,11 @@ GxEPD2_BW<GxEPD2_420_GYE042A87, GxEPD2_420_GYE042A87::HEIGHT> & getdisplay();
 GxEPD2_BW<GxEPD2_420_SE0420NQ04, GxEPD2_420_SE0420NQ04::HEIGHT> & getdisplay();
 #endif
 
+// Page display return values
+#define PAGE_OK 0          // all ok, do nothing
+#define PAGE_UPDATE 1      // page wants display to update
+#define PAGE_HIBERNATE 2   // page wants displey to hibernate
+
 struct Point {
     double x;
     double y;
@@ -97,6 +102,7 @@ void displayTrendLow(int16_t x, int16_t y, uint16_t size, uint16_t color);
 
 void displayHeader(CommonData &commonData, GwApi::BoatValue *date, GwApi::BoatValue *time, GwApi::BoatValue *hdop); // Draw display header
 void displayFooter(CommonData &commonData);
+void displayAlarm(CommonData &commonData);
 
 SunData calcSunsetSunrise(double time, double date, double latitude, double longitude, float timezone); // Calulate sunset and sunrise
 SunData calcSunsetSunriseRTC(struct tm *rtctime, double latitude, double longitude, float timezone);
@@ -142,12 +148,12 @@ static unsigned char fram_bits[] PROGMEM = {
    0xff, 0xff, 0xf8, 0x1f, 0xf8, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x1f,
    0xf8, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x1f };
 
-static unsigned char ap_bits[] = {
+static unsigned char ap_bits[] PROGMEM = {
    0xe0, 0x03, 0x18, 0x0c, 0x04, 0x10, 0xc2, 0x21, 0x30, 0x06, 0x08, 0x08,
    0xc0, 0x01, 0x20, 0x02, 0x00, 0x00, 0x80, 0x00, 0xc0, 0x01, 0xc0, 0x01,
    0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00 };
 
-static unsigned char dish_bits[] PROGMEM= {
+static unsigned char dish_bits[] PROGMEM = {
    0x3c, 0x00, 0x42, 0x18, 0xfa, 0x1b, 0x02, 0x04, 0x02, 0x0a, 0x02, 0x09,
    0x82, 0x08, 0x06, 0x0a, 0x0e, 0x1b, 0x9c, 0x2b, 0x38, 0x2b, 0x74, 0x20,
    0xec, 0x1f, 0x1c, 0x00, 0xf4, 0x00, 0xfe, 0x03 };

lib/obp60task/PageBME280.cpp

@@ -20,7 +20,7 @@ class PageBME280 : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -176,9 +176,7 @@ class PageBME280 : public Page
         // Show bus data
         getdisplay().print(svalue3);                         // Real value as formated string
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageBattery.cpp

@@ -34,7 +34,7 @@ class PageBattery : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
         
@@ -288,9 +288,7 @@ class PageBattery : public Page
             getdisplay().print("---");                       // No sensor data (sensor is off)
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageBattery2.cpp

@@ -44,7 +44,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -334,8 +334,7 @@ public:
         getdisplay().setFont(&Ubuntu_Bold16pt8b);
         getdisplay().print("W");
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageClock.cpp

@@ -85,7 +85,7 @@ bool homevalid = false; // homelat and homelon are valid
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -162,7 +162,7 @@ bool homevalid = false; // homelat and homelon are valid
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageClock, %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2);
 
         // Draw page
@@ -438,9 +438,7 @@ bool homevalid = false; // homelat and homelon are valid
         getdisplay().fillCircle(200, 150, startwidth + 6, commonData->bgcolor);
         getdisplay().fillCircle(200, 150, startwidth + 4, commonData->fgcolor);
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageCompass.cpp

@@ -61,7 +61,7 @@ class PageCompass : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
     
@@ -104,7 +104,7 @@ class PageCompass : public Page
             setFlashLED(false); 
         }
 
-        if (bvalue == NULL) return;
+        if (bvalue == NULL) return PAGE_OK; // WTF why this statement?
         
         //***********************************************************
 
@@ -235,12 +235,11 @@ class PageCompass : public Page
         // if ( x_test > 390)
         //     x_test = 320;
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-    
+        return PAGE_UPDATE;
     };
 
-    };
+};
+
 static Page *createPage(CommonData &common){
     return new PageCompass(common);
 }/**

lib/obp60task/PageDST810.cpp

@@ -20,7 +20,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -84,7 +84,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageDST810, %s: %f, %s: %f, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4);
 
         // Draw page
@@ -242,9 +242,7 @@ public:
             unit4old = unit4;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageFluid.cpp

@@ -98,7 +98,7 @@ class PageFluid : public Page
         commonData->logger->logDebug(GwLog::LOG,"New PageFluid: fluidtype=%d", fluidtype);
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -252,9 +252,7 @@ class PageFluid : public Page
             getdisplay().fillCircle(c.x, c.y, 6, commonData->bgcolor);
         }
  
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageFourValues.cpp

@@ -21,7 +21,7 @@ class PageFourValues : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -89,7 +89,7 @@ class PageFourValues : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageFourValues, %s: %f, %s: %f, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4);
 
         // Draw page
@@ -287,9 +287,7 @@ class PageFourValues : public Page
             unit4old = unit4;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageFourValues2.cpp

@@ -21,7 +21,7 @@ class PageFourValues2 : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -89,7 +89,7 @@ class PageFourValues2 : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageFourValues2, %s: %f, %s: %f, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4);
 
         // Draw page
@@ -287,9 +287,7 @@ class PageFourValues2 : public Page
             unit4old = unit4;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageGenerator.cpp

@@ -20,7 +20,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -203,8 +203,7 @@ public:
         getdisplay().setFont(&Ubuntu_Bold16pt8b);
         getdisplay().print("W");
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageKeelPosition.cpp

@@ -21,7 +21,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -206,9 +206,7 @@ public:
             getdisplay().print("No sensor data");            // Info missing sensor
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageOneValue.cpp

@@ -21,7 +21,7 @@ class PageOneValue : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -53,7 +53,7 @@ class PageOneValue : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageOneValue, %s: %f", name1.c_str(), value1);
 
         // Draw page
@@ -104,9 +104,7 @@ class PageOneValue : public Page
             unit1old = unit1;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageRollPitch.cpp

@@ -21,7 +21,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -109,7 +109,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageRollPitch, %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2);
 
         // Draw page
@@ -305,9 +305,7 @@ public:
             getdisplay().print("No sensor data");            // Info missing sensor
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageRudderPosition.cpp

@@ -22,7 +22,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+   int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -67,7 +67,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageRudderPosition, %s:%f", name1.c_str(), value1);
 
         // Draw page
@@ -207,8 +207,7 @@ public:
         getdisplay().fillCircle(200, 150, startwidth + 6, commonData->bgcolor);
         getdisplay().fillCircle(200, 150, startwidth + 4, commonData->fgcolor);
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageSixValues.cpp

@@ -29,7 +29,7 @@ class PageSixValues : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -71,7 +71,7 @@ class PageSixValues : public Page
                 setFlashLED(false); 
             }
     
-            if (bvalue == NULL) return;
+            if (bvalue == NULL) return PAGE_OK; // WTF why this statement?
            
             // Draw page
             //***********************************************************
@@ -149,9 +149,7 @@ class PageSixValues : public Page
             getdisplay().fillRect(SixValues_x1+SixValues_DeltaX-8, SixValues_y1+i*SixValues_DeltaY, 3, SixValues_DeltaY, commonData->fgcolor);
             }
     
-            // Update display
-            getdisplay().nextPage();    // Partial update (fast)
-    
+            return PAGE_UPDATE;
         };
     
     };

lib/obp60task/PageSolar.cpp

@@ -20,7 +20,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
         
@@ -199,8 +199,7 @@ public:
         getdisplay().setFont(&Ubuntu_Bold16pt8b);
         getdisplay().print("W");
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageSystem.cpp

@@ -164,7 +164,7 @@ public:
         }
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -391,7 +391,7 @@ public:
 
         // Update display
         getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_OK;
     };
 };
 

lib/obp60task/PageThreeValues.cpp

@@ -21,7 +21,7 @@ class PageThreeValues : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -77,7 +77,7 @@ class PageThreeValues : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageThreeValues, %s: %f, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3);
 
         // Draw page
@@ -226,8 +226,7 @@ class PageThreeValues : public Page
             unit3old = unit3;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageTwoValues.cpp

@@ -21,7 +21,7 @@ class PageTwoValues : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -65,7 +65,7 @@ class PageTwoValues : public Page
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageTwoValues, %s: %f, %s: %f", name1.c_str(), value1, name2.c_str(), value2);
 
         // Draw page
@@ -166,8 +166,7 @@ class PageTwoValues : public Page
             unit2old = unit2;                                           // Save the old unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageVoltage.cpp

@@ -100,7 +100,7 @@ public:
         getdisplay().fillRect(x + 16, y + 11, 6, 3, color);
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
         
@@ -383,8 +383,7 @@ public:
 
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageWhite.cpp

@@ -31,7 +31,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -67,10 +67,13 @@ public:
         }
 
         // Update display
-        getdisplay().nextPage();
+        // getdisplay().nextPage();
+        int ret = PAGE_UPDATE;
         if (mode == 'W') {
-            getdisplay().hibernate();
+            //getdisplay().hibernate();
+            ret |= PAGE_HIBERNATE;
         }
+        return ret;
 
     };
 };

lib/obp60task/PageWind.cpp

@@ -296,7 +296,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData)
+    int displayPage(PageData &pageData)
     {
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
@@ -354,7 +354,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageWind, %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2);
 
         // Draw page
@@ -618,9 +618,7 @@ public:
 
         }
 
-        // Update display
-        getdisplay().nextPage();     // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageWindRose.cpp

@@ -24,7 +24,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -140,7 +140,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageWindRose, %s:%f,  %s:%f,  %s:%f,  %s:%f,  %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4, name5.c_str(), value5, name6.c_str(), value6);
 
         // Draw page
@@ -357,8 +357,7 @@ public:
             getdisplay().print(unit6old);                // Unit
         }
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageWindRoseFlex.cpp

@@ -24,7 +24,7 @@ public:
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -140,7 +140,7 @@ public:
         }
 
         // Logging boat values
-        if (bvalue1 == NULL) return;
+        if (bvalue1 == NULL) return PAGE_OK; // WTF why this statement?
         LOG_DEBUG(GwLog::LOG,"Drawing at PageWindRoseFlex, %s:%f,  %s:%f,  %s:%f,  %s:%f,  %s:%f,  %s:%f", name1.c_str(), value1, name2.c_str(), value2, name3.c_str(), value3, name4.c_str(), value4, name5.c_str(), value5, name6.c_str(), value6);
 
         // Draw page
@@ -362,8 +362,7 @@ if ( cos(value1) > 0){
     }
     
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/PageXTETrack.cpp

@@ -65,7 +65,7 @@ class PageXTETrack : public Page
         return key;
     }
 
-    virtual void displayPage(PageData &pageData){
+    int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
@@ -207,9 +207,7 @@ class PageXTETrack : public Page
         drawSegment(399, 100, 318, 24, 289, 24, 350, 100, commonData->fgcolor, seg[4]);
         drawSegment(399, 54, 354, 24, 325, 24, 399, 90, commonData->fgcolor, seg[5]);
 
-        // Update display
-        getdisplay().nextPage();    // Partial update (fast)
-
+        return PAGE_UPDATE;
     };
 };
 

lib/obp60task/Pagedata.h

@@ -78,6 +78,22 @@ typedef struct{
     bool on;            // fast on/off detector
 } BacklightData;
 
+enum AlarmSource {
+    Alarm_Generic,
+    Alarm_Local,
+    Alarm_NMEA0183,
+    Alarm_NMEA2000
+};
+
+typedef struct{
+    uint8_t id; // alarm-id e.g. 01..99 from NMEA0183
+    AlarmSource source;
+    String message; // single line of plain text
+    bool active = false;
+    uint8_t signal; // how to signal MESSAGE | LED | BUZZER
+    uint8_t length_sec; // seconds until alarm disappeares without user interaction
+} AlarmData;
+
 typedef struct{
   GwApi::Status status;
   GwLog *logger=NULL;
@@ -86,6 +102,7 @@ typedef struct{
   SunData sundata;
   TouchKeyData keydata[6];
   BacklightData backlight;
+  AlarmData alarm;
   GwApi::BoatValue *time=NULL;
   GwApi::BoatValue *date=NULL;
   uint16_t fgcolor;
@@ -100,7 +117,7 @@ class Page{
     CommonData *commonData;
   public:
     int refreshtime = 1000;
-    virtual void displayPage(PageData &pageData)=0;
+    virtual int displayPage(PageData &pageData)=0;
     virtual void displayNew(PageData &pageData){}
     virtual void setupKeys() {
 #ifdef HARDWARE_V21

lib/obp60task/obp60task.cpp

@@ -843,7 +843,16 @@ void OBP60Task(GwApi *api){
                         if (pages[pageNumber].description && pages[pageNumber].description->header){
                             displayFooter(commonData);
                         }
-                        currentPage->displayPage(pages[pageNumber].parameters);
+                        int ret = currentPage->displayPage(pages[pageNumber].parameters);
+                        if (commonData.alarm.active) {
+                            displayAlarm(commonData);
+                        }
+                        if (ret & PAGE_UPDATE) {
+                            getdisplay().nextPage(); // Partial update (fast)
+                        }
+                        if (ret & PAGE_HIBERNATE) {
+                            getdisplay().hibernate();
+                        }
                     }
 
                 }