From ded680bc80a2bca2a811f38dde63a01e3fcf91c4 Mon Sep 17 00:00:00 2001
From: Thomas Pohl <thomas.pohl@exxeta.com>
Date: Mon, 1 May 2023 19:18:34 +0200
Subject: [PATCH] For ePaper display, show ahoy logo on offline screen Solves
 #897

---
 src/plugins/Display/Display_ePaper.cpp | 94 +++++++++++++++++---------
 src/plugins/Display/Display_ePaper.h   |  1 +
 2 files changed, 63 insertions(+), 32 deletions(-)

diff --git a/src/plugins/Display/Display_ePaper.cpp b/src/plugins/Display/Display_ePaper.cpp
index 99d35ed8..7a000c2d 100644
--- a/src/plugins/Display/Display_ePaper.cpp
+++ b/src/plugins/Display/Display_ePaper.cpp
@@ -120,6 +120,28 @@ void DisplayEPaper::lastUpdatePaged() {
     } while (_display->nextPage());
 }
 //***************************************************************************
+void DisplayEPaper::offlineFooter() {
+    int16_t tbx, tby;
+    uint16_t tbw, tbh;
+
+    _display->setFont(&FreeSans9pt7b);
+    _display->setTextColor(GxEPD_WHITE);
+
+    _display->setPartialWindow(0, _display->height() - mHeadFootPadding, _display->width(), mHeadFootPadding);
+    _display->fillScreen(GxEPD_BLACK);
+    do {
+        if (NULL != mUtcTs) {
+            snprintf(_fmtText, sizeof(_fmtText), "offline");
+
+            _display->getTextBounds(_fmtText, 0, 0, &tbx, &tby, &tbw, &tbh);
+            uint16_t x = ((_display->width() - tbw) / 2) - tbx;
+
+            _display->setCursor(x, (_display->height() - 3));
+            _display->println(_fmtText);
+        }
+    } while (_display->nextPage());
+}
+//***************************************************************************
 void DisplayEPaper::actualPowerPaged(float _totalPower, float _totalYieldDay, float _totalYieldTotal, uint8_t _isprod) {
     int16_t tbx, tby;
     uint16_t tbw, tbh, x, y;
@@ -139,38 +161,44 @@ void DisplayEPaper::actualPowerPaged(float _totalPower, float _totalYieldDay, fl
         } else {
             snprintf(_fmtText, sizeof(_fmtText), "offline");
         }
-        _display->getTextBounds(_fmtText, 0, 0, &tbx, &tby, &tbw, &tbh);
-        x = ((_display->width() - tbw) / 2) - tbx;
-        _display->setCursor(x, mHeadFootPadding + tbh + 10);
-        _display->print(_fmtText);
-
-        _display->setFont(&FreeSans12pt7b);
-        y = _display->height() / 2;
-        _display->setCursor(5, y);
-        _display->print("today:");
-        snprintf(_fmtText, _display->width(), "%.0f", _totalYieldDay);
-        _display->getTextBounds(_fmtText, 0, 0, &tbx, &tby, &tbw, &tbh);
-        x = ((_display->width() - tbw) / 2) - tbx;
-        _display->setCursor(x, y);
-        _display->print(_fmtText);
-        _display->setCursor(_display->width() - 38, y);
-        _display->println("Wh");
-
-        y = y + tbh + 7;
-        _display->setCursor(5, y);
-        _display->print("total:");
-        snprintf(_fmtText, _display->width(), "%.1f", _totalYieldTotal);
-        _display->getTextBounds(_fmtText, 0, 0, &tbx, &tby, &tbw, &tbh);
-        x = ((_display->width() - tbw) / 2) - tbx;
-        _display->setCursor(x, y);
-        _display->print(_fmtText);
-        _display->setCursor(_display->width() - 50, y);
-        _display->println("kWh");
-
-        _display->setCursor(10, _display->height() - (mHeadFootPadding + 10));
-        snprintf(_fmtText, sizeof(_fmtText), "%d Inverter online", _isprod);
-        _display->println(_fmtText);
+        if (_totalPower == 0){
+            _display->fillRect(0, mHeadFootPadding, 200,200, GxEPD_BLACK);
+            _display->drawBitmap(0, 0, logo, 200, 200, GxEPD_WHITE);
+        } else {
+            _display->getTextBounds(_fmtText, 0, 0, &tbx, &tby, &tbw, &tbh);
+            x = ((_display->width() - tbw) / 2) - tbx;
+            _display->setCursor(x, mHeadFootPadding + tbh + 10);
+            _display->print(_fmtText);
+
+            _display->setFont(&FreeSans12pt7b);
+            y = _display->height() / 2;
+            _display->setCursor(5, y);
+            _display->print("today:");
+            snprintf(_fmtText, _display->width(), "%.0f", _totalYieldDay);
+            _display->getTextBounds(_fmtText, 0, 0, &tbx, &tby, &tbw, &tbh);
+            x = ((_display->width() - tbw) / 2) - tbx;
+            _display->setCursor(x, y);
+            _display->print(_fmtText);
+            _display->setCursor(_display->width() - 38, y);
+            _display->println("Wh");
+
+            y = y + tbh + 7;
+            _display->setCursor(5, y);
+            _display->print("total:");
+            snprintf(_fmtText, _display->width(), "%.1f", _totalYieldTotal);
+            _display->getTextBounds(_fmtText, 0, 0, &tbx, &tby, &tbw, &tbh);
+            x = ((_display->width() - tbw) / 2) - tbx;
+            _display->setCursor(x, y);
+            _display->print(_fmtText);
+            _display->setCursor(_display->width() - 50, y);
+            _display->println("kWh");
+
+            _display->setCursor(10, _display->height() - (mHeadFootPadding + 10));
+            snprintf(_fmtText, sizeof(_fmtText), "%d Inverter online", _isprod);
+            _display->println(_fmtText);
 
+
+        }
     } while (_display->nextPage());
 }
 //***************************************************************************
@@ -185,10 +213,12 @@ void DisplayEPaper::loop(float totalPower, float totalYieldDay, float totalYield
     // call the PowerPage to change the PV Power Values
     actualPowerPaged(totalPower, totalYieldDay, totalYieldTotal, isprod);
 
-    // if there was an change and the Inverter is producing set a new Timestam in the footline
+    // if there was an change and the Inverter is producing set a new Timestamp in the footline
     if ((isprod > 0) && (_changed)) {
         _changed = false;
         lastUpdatePaged();
+    } else if(totalPower==0) {
+        offlineFooter();
     }
 
     _display->powerOff();
diff --git a/src/plugins/Display/Display_ePaper.h b/src/plugins/Display/Display_ePaper.h
index b2729f25..1e8d34b8 100644
--- a/src/plugins/Display/Display_ePaper.h
+++ b/src/plugins/Display/Display_ePaper.h
@@ -39,6 +39,7 @@ class DisplayEPaper {
       void headlineIP();
       void actualPowerPaged(float _totalPower, float _totalYieldDay, float _totalYieldTotal, uint8_t _isprod);
       void lastUpdatePaged();
+      void offlineFooter();
 
       uint8_t mDisplayRotation;
       bool _changed = false;