More work on page anchor

lib/obp60task/ConfigMenu.cpp

@@ -0,0 +1,217 @@
+/*
+  Menu system for online configuration
+
+  A menu consists of a list of menuitems.
+
+  Graphical representation is stored:
+     upper left corner: x, y
+     bounding box:
+  A menu consists of three columns
+    - menu text, if selected highlighted
+    - menu value with optional unit
+    - menu description or additional data for value
+
+*/
+#include "ConfigMenu.h"
+
+ConfigMenuItem::ConfigMenuItem(String itemtype, String itemlabel, uint16_t itemval, String itemunit) {
+    if (! (itemtype == "int" or itemtype == "bool")) {
+        valtype = "int";
+    } else {
+        valtype = itemtype;
+    }
+    label = itemlabel;
+    min = 0;
+    max = std::numeric_limits<uint16_t>::max();
+    value = itemval;
+    unit = itemunit;
+    step = 1;
+}
+
+void ConfigMenuItem::setRange(uint16_t valmin, uint16_t valmax, std::vector<uint16_t> valsteps) {
+    min = valmin;
+    max = valmax;
+    steps = valsteps;
+    step = steps[0];
+};
+
+bool ConfigMenuItem::checkRange(uint16_t checkval) {
+    return (checkval >= min) and (checkval <= max);
+}
+
+String ConfigMenuItem::getLabel() {
+    return label;
+};
+
+uint16_t ConfigMenuItem::getValue() {
+    return value;
+}
+
+bool ConfigMenuItem::setValue(uint16_t newval) {
+    if (valtype == "int") {
+        if (newval >= min and newval <= max) {
+            value = newval;
+            return true;
+        }
+        return false; // out of range
+    } else if (valtype == "bool") {
+        value = (newval != 0) ? 1 : 0;
+        return true;
+    }
+    return false; // invalid type
+};
+
+void ConfigMenuItem::incValue() {
+    // increase value by step
+    if (valtype == "int") {
+        if (value + step < max) {
+            value += step;
+        } else {
+            value = max;
+        }
+    } else if (valtype == "bool") {
+        value = !value;
+    }
+};
+
+void ConfigMenuItem::decValue() {
+    // decrease value by step
+    if (valtype == "int") {
+        if (value - step > min) {
+            value -= step;
+        } else {
+            value = min;
+        }
+    } else if (valtype == "bool") {
+        value = !value;
+    }
+};
+
+String ConfigMenuItem::getUnit() {
+    return unit;
+}
+
+uint16_t ConfigMenuItem::getStep() {
+    return step;
+}
+
+void ConfigMenuItem::setStep(uint16_t newstep) {
+    if (std::find(steps.begin(), steps.end(), newstep) == steps.end()) {
+        return; // invalid step: not in list of possible steps
+    }
+    step = newstep;
+}
+
+int8_t ConfigMenuItem::getPos() {
+    return position;
+};
+
+void ConfigMenuItem::setPos(int8_t newpos) {
+    position = newpos;
+};
+
+String ConfigMenuItem::getType() {
+    return valtype;
+}
+
+ConfigMenu::ConfigMenu(String menutitle, uint16_t menu_x, uint16_t menu_y) {
+    title = menutitle;
+    x = menu_x;
+    y = menu_y;
+};
+
+ConfigMenuItem* ConfigMenu::addItem(String key, String label, String valtype, uint16_t val, String valunit) {
+    if (items.find(key) != items.end()) {
+        // duplicate keys not allowed
+        return nullptr;
+    }
+    ConfigMenuItem *itm = new ConfigMenuItem(valtype, label, val, valunit);
+    items.insert(std::pair<String, ConfigMenuItem*>(key, itm));
+    // Append key to index, index starting with 0
+    int8_t ix = items.size() - 1;
+    index[ix] = key;
+    itm->setPos(ix);
+    return itm;
+};
+
+void ConfigMenu::setItemDimension(uint16_t itemwidth, uint16_t itemheight) {
+    w = itemwidth;
+    h = itemheight;
+};
+
+void ConfigMenu::setItemActive(String key) {
+    if (items.find(key) != items.end()) {
+        activeitem = items[key]->getPos();
+    } else {
+        activeitem = -1;
+    }
+};
+
+int8_t ConfigMenu::getActiveIndex() {
+    return activeitem;
+}
+
+ConfigMenuItem* ConfigMenu::getActiveItem() {
+    if (activeitem < 0) {
+        return nullptr;
+    }
+    return items[index[activeitem]];
+};
+
+ConfigMenuItem* ConfigMenu::getItemByIndex(uint8_t ix) {
+    if (ix > index.size() - 1) {
+        return nullptr;
+    }
+    return items[index[ix]];
+};
+
+ConfigMenuItem* ConfigMenu::getItemByKey(String key) {
+    if (items.find(key) == items.end()) {
+        return nullptr;
+    }
+    return items[key];
+};
+
+uint8_t ConfigMenu::getItemCount() {
+    return items.size();
+};
+
+void ConfigMenu::goPrev() {
+    if (activeitem == 0) {
+        activeitem = items.size() - 1;
+    } else {
+        activeitem--;
+    }
+}
+
+void ConfigMenu::goNext() {
+    if (activeitem == items.size() - 1) {
+        activeitem = 0;
+    } else {
+        activeitem++;
+    }
+}
+
+Point ConfigMenu::getXY() {
+    return {static_cast<double>(x), static_cast<double>(y)};
+}
+
+Rect ConfigMenu::getRect() {
+    return {static_cast<double>(x), static_cast<double>(y),
+            static_cast<double>(w), static_cast<double>(h)};
+}
+
+Rect ConfigMenu::getItemRect(int8_t index) {
+    return {static_cast<double>(x), static_cast<double>(y + index * h),
+            static_cast<double>(w), static_cast<double>(h)};
+}
+
+void ConfigMenu::setCallback(void (*callback)()) {
+    fptrCallback = callback;
+}
+
+void ConfigMenu::storeValues() {
+    if (fptrCallback) {
+        fptrCallback();
+    }
+}

lib/obp60task/ConfigMenu.h

@@ -0,0 +1,67 @@
+#pragma once
+
+#include <Arduino.h>
+#include <vector>
+#include <map>
+#include "Graphics.h"  // for Point and Rect
+
+class ConfigMenuItem {
+private:
+    String label;
+    uint16_t value;
+    String unit;
+    String desc; // optional data to display
+    String valtype; // "int" | "bool" -> TODO "list"
+    uint16_t min;
+    uint16_t max;
+    std::vector<uint16_t> steps;
+    uint16_t step;
+    int8_t position; // counted fom 0
+
+public:
+    ConfigMenuItem(String itemtype, String itemlabel, uint16_t itemval, String itemunit);
+    void setRange(uint16_t valmin, uint16_t valmax, std::vector<uint16_t> steps);
+    bool checkRange(uint16_t checkval);
+    String getLabel();
+    uint16_t getValue();
+    bool setValue(uint16_t newval);
+    void incValue();
+    void decValue();
+    String getUnit();
+    uint16_t getStep();
+    void setStep(uint16_t newstep);
+    int8_t getPos();
+    void setPos(int8_t newpos);
+    String getType();
+};
+
+class ConfigMenu {
+private:
+    String title;
+    std::map <String,ConfigMenuItem*> items;
+    std::map <uint8_t,String> index;
+    int8_t activeitem = -1; // refers to position of item
+    uint16_t x;
+    uint16_t y;
+    uint16_t w;
+    uint16_t h;
+    void (*fptrCallback)();
+
+public:
+    ConfigMenu(String title, uint16_t menu_x, uint16_t menu_y);
+    ConfigMenuItem* addItem(String key, String label, String valtype, uint16_t val, String valunit);
+    void setItemDimension(uint16_t itemwidth, uint16_t itemheight);
+    int8_t getActiveIndex();
+    void setItemActive(String key);
+    ConfigMenuItem* getActiveItem();
+    ConfigMenuItem* getItemByIndex(uint8_t index);
+    ConfigMenuItem* getItemByKey(String key);
+    uint8_t getItemCount();
+    void goPrev();
+    void goNext();
+    Point getXY();
+    Rect getRect();
+    Rect getItemRect(int8_t index);
+    void setCallback(void (*callback)());
+    void storeValues();
+};

lib/obp60task/OBP60Extensions.cpp

@@ -475,6 +475,30 @@ std::vector<String> wordwrap(String &line, uint16_t maxwidth) {
     return lines;
 }
 
+// Helper function to just get the exact width of a string
+uint16_t getStringPixelWidth(const char* str, const GFXfont* font) {
+    int16_t minx = INT16_MAX;
+    int16_t maxx = INT16_MIN;
+    int16_t cursor_x = 0;
+    while (*str) {
+        char c = *str++;
+        if (c < font->first || c > font->last) {
+            continue;
+        }
+        GFXglyph* glyph = &font->glyph[c - font->first];
+        if (glyph->width > 0) {
+            int16_t glyphStart = cursor_x + glyph->xOffset;
+            int16_t glyphEnd = glyphStart + glyph->width;
+            if (glyphStart < minx) minx = glyphStart;
+            if (glyphEnd > maxx) maxx = glyphEnd;
+        }
+        cursor_x += glyph->xAdvance;
+    }
+    if (minx > maxx)
+        return 0;
+    return maxx - minx;
+}
+
 // Draw centered text
 void drawTextCenter(int16_t cx, int16_t cy, String text) {
     int16_t x1, y1;
@@ -638,20 +662,19 @@ void displayHeader(CommonData &commonData, GwApi::BoatValue *date, GwApi::BoatVa
         // Date and time
         String fmttype = commonData.config->getString(commonData.config->dateFormat);
         String timesource = commonData.config->getString(commonData.config->timeSource);
-        double tz = commonData.config->getString(commonData.config->timeZone).toDouble();
         getdisplay().setTextColor(commonData.fgcolor);
         getdisplay().setFont(&Ubuntu_Bold8pt8b);
         getdisplay().setCursor(230, 15);
         if (timesource == "RTC" or timesource == "iRTC") {
             // TODO take DST into account
             if (commonData.data.rtcValid) {
-                time_t tv = mktime(&commonData.data.rtcTime) + (int)(tz * 3600);
+                time_t tv = mktime(&commonData.data.rtcTime) + (int)(commonData.tz * 3600);
                 struct tm *local_tm = localtime(&tv);
                 getdisplay().print(formatTime('m', local_tm->tm_hour, local_tm->tm_min, 0));
                 getdisplay().print(" ");
                 getdisplay().print(formatDate(fmttype, local_tm->tm_year + 1900, local_tm->tm_mon + 1, local_tm->tm_mday));
                 getdisplay().print(" ");
-                getdisplay().print(tz == 0 ? "UTC" : "LOT");
+                getdisplay().print(commonData.tz == 0 ? "UTC" : "LOT");
             } else {
                 drawTextRalign(396, 15, "RTC invalid");
             }
@@ -666,7 +689,7 @@ void displayHeader(CommonData &commonData, GwApi::BoatValue *date, GwApi::BoatVa
                 getdisplay().print(" ");
                 getdisplay().print(actdate);
                 getdisplay().print(" ");
-                getdisplay().print(tz == 0 ? "UTC" : "LOT");
+                getdisplay().print(commonData.tz == 0 ? "UTC" : "LOT");
             }
             else{
                 if(commonData.config->getBool(commonData.config->useSimuData) == true){

lib/obp60task/PageAnchor.cpp

@@ -0,0 +1,771 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#if defined BOARD_OBP60S3 || defined BOARD_OBP40S3
+
+/*
+  This page is in experimental stage so be warned!
+  North is up.
+  Anchor page with background map from mapservice
+
+  Boatdata used
+    DBS - Water depth
+    HDT - Boat heading, true
+    AWS - Wind strength; Boat not moving so we assume AWS=TWS and AWD=TWD
+    AWD - Wind direction
+    LAT/LON - Boat position, current
+    HDOP - Position error, horizontal
+
+   Raise function in device OBP40 has to be done inside config mode
+   because of limited number of buttons.
+
+  TODO 
+    gzip for data transfer,
+       miniz.c from ROM?
+       manually inflating with tinflate from ROM
+    Save position in FRAM
+    Alarm: gps fix lost
+    switch unit feet/meter
+    force map update if new position is different from old position by 
+    a certain level (e.g. 10m)
+    windlass integration
+    chain counter
+
+    Map service options / URL parameters
+      - mandatory
+          lat: latitude
+          lon: longitude
+          width: image width in px (400)
+          height: image height in px (300)
+      - optional
+          zoom: zoom level, default 15
+          mrot: map rotation angle in degrees
+          mtype: map type, default="Open Street Map"
+          dtype: dithering type, default="Atkinson"
+          cutout: image cutout type 0=none
+          alpha: alpha blending for cutout
+          tab: tab size, 0=none
+          border: border line zize in px, default 2
+          symbol: synmol number, default=2 triangle
+          srot: symbol rotation in degrees
+          ssize: symbol size in px, default=15
+          grid: show map grid
+
+*/
+
+#include <WiFi.h>
+#include <HTTPClient.h>
+#include "Pagedata.h"
+#include "OBP60Extensions.h"
+#include "ConfigMenu.h"
+// #include "miniz.h" // devices without PSRAM use <rom/miniz.h>
+
+// extern "C" {
+  #include "rom/miniz.h"
+// }
+
+#define anchor_width 16
+#define anchor_height 16
+static unsigned char anchor_bits[] PROGMEM = {
+   0x80, 0x01, 0x40, 0x02, 0x40, 0x02, 0x80, 0x01, 0xf0, 0x0f, 0x80, 0x01,
+   0x80, 0x01, 0x88, 0x11, 0x8c, 0x31, 0x8e, 0x71, 0x84, 0x21, 0x86, 0x61,
+   0x86, 0x61, 0xfc, 0x3f, 0xf8, 0x1f, 0x80, 0x01 };
+
+class PageAnchor : public Page
+{
+private:
+    char mode = 'N'; // (N)ormal, (C)onfig
+    int8_t editmode = -1; // marker for menu/edit/set function
+    ConfigMenu *menu;
+
+    //uint8_t *mapbuf = new uint8_t[10000]; // 8450 Byte without header
+    //int mapbuf_size = 10000;
+    //uint8_t *mapbuf = (uint8_t*) heap_caps_malloc(mapbuf_size, MALLOC_CAP_SPIRAM);
+    GFXcanvas1 *canvas;
+    const uint16_t map_width = 264;
+    const uint16_t map_height = 260;
+    bool map_valid = false;
+    char map_service = 'R'; // (O)BP Service, (L)ocal Service, (R)emote Service
+    double map_lat = 0; // current center of valid map
+    double map_lon = 0;
+    String server_name; // server with map service
+    uint16_t server_port = 80;
+    String tile_path;
+
+    String lengthformat;
+
+    double scale = 50; // Radius of display circle in meter, depends on lat
+    uint8_t zoom = 15; // map zoom level
+
+    bool alarm = false;
+    bool alarm_enabled = false;
+    uint8_t alarm_range;
+
+    uint8_t chain_length;
+    uint8_t chain = 0;
+
+    bool anchor_set = false;
+    double anchor_lat;
+    double anchor_lon;
+    double anchor_depth;
+    int anchor_ts; // time stamp anchor dropped
+
+    GwApi::BoatValue *bv_dbs; // depth below surface
+    GwApi::BoatValue *bv_hdt; // true heading
+    GwApi::BoatValue *bv_aws; // apparent wind speed
+    GwApi::BoatValue *bv_awd; // apparent wind direction
+    GwApi::BoatValue *bv_lat; // latitude, current
+    GwApi::BoatValue *bv_lon; // longitude, current
+    GwApi::BoatValue *bv_hdop; // horizontal position error
+
+    bool simulation = false;
+    int last_mapsize = 0;
+    String errmsg = "";
+    int loops;
+    int readbytes = 0;
+
+    void displayModeNormal(PageData &pageData) {
+
+        // get currrent boatvalues
+        bv_dbs = pageData.values[0]; // DBS
+        String sval_dbs = formatValue(bv_dbs, *commonData).svalue;
+        String sunit_dbs = formatValue(bv_dbs, *commonData).unit; 
+        bv_hdt = pageData.values[1]; // HDT
+        String sval_hdt = formatValue(bv_hdt, *commonData).svalue;
+        bv_aws = pageData.values[2]; // AWS
+        String sval_aws = formatValue(bv_aws, *commonData).svalue;
+        String sunit_aws = formatValue(bv_aws, *commonData).unit; 
+        bv_awd = pageData.values[3]; // AWD
+        String sval_awd = formatValue(bv_awd, *commonData).svalue;
+        bv_lat = pageData.values[4]; // LAT
+        String sval_lat = formatValue(bv_lat, *commonData).svalue;
+        bv_lon = pageData.values[5]; // LON
+        String sval_lon = formatValue(bv_lon, *commonData).svalue;
+        bv_hdop = pageData.values[6]; // HDOP
+        String sval_hdop = formatValue(bv_hdop, *commonData).svalue;
+        String sunit_hdop = formatValue(bv_hdop, *commonData).unit; 
+
+        commonData->logger->logDebug(GwLog::DEBUG, "Drawing at PageAnchor; DBS=%f, HDT=%f, AWS=%f", bv_dbs->value, bv_hdt->value, bv_aws->value);
+
+        // Draw canvas with background map
+        // rhumb(map_lat, map_lon, bv_lat->value, bv_lon->value)
+        int posdiff = 0;
+        if (map_valid) {
+            if (bv_lat->valid and bv_lon->valid) {
+                // calculate movement since last map refresh
+                posdiff = rhumb(map_lat, map_lon, bv_lat->value, bv_lon->value);
+                if (posdiff > 25) {
+                    map_lat = bv_lat->value;
+                    map_lon = bv_lon->value;
+                    map_valid = getBackgroundMap(map_lat, map_lon, zoom);
+                    if (map_valid) {
+                        // prepare visible space for anchor-symbol or boat
+                        canvas->fillCircle(132, 130, 12, commonData->fgcolor);
+                    }
+                }
+            }
+            getdisplay().drawBitmap(68, 20, canvas->getBuffer(), map_width, map_height, commonData->fgcolor);
+        }
+
+        Point c = {200, 150}; // center = anchor position
+        uint16_t r = 125;
+
+        // Circle as map border
+        getdisplay().drawCircle(c.x, c.y, r, commonData->fgcolor);
+        getdisplay().drawCircle(c.x, c.y, r + 1, commonData->fgcolor);
+
+        Point b = {200, 180}; // boat position while dropping anchor
+
+        const std::vector<Point> pts_boat = { // polygon lines
+            {b.x - 5, b.y},
+            {b.x - 5, b.y - 10},
+            {b.x, b.y - 16},
+            {b.x + 5, b.y - 10},
+            {b.x + 5, b.y}
+        };
+        //rotatePoints then draw lines
+        // TODO rotate boat according to current heading
+        if (bv_hdt->valid) {
+            if (map_valid) {
+                Point b1 = rotatePoint(c, {b.x, b.y - 8}, bv_hdt->value * RAD_TO_DEG);
+                getdisplay().fillCircle(b1.x, b1.y, 10, commonData->bgcolor);
+            }
+            drawPoly(rotatePoints(c, pts_boat, bv_hdt->value * RAD_TO_DEG), commonData->fgcolor);
+        } else {
+            // no heading available: draw north oriented
+            if (map_valid) {
+                getdisplay().fillCircle(b.x, b.y - 8, 10, commonData->bgcolor);
+            }
+            drawPoly(pts_boat, commonData->fgcolor);
+        }
+
+        // Draw wind arrow
+        const std::vector<Point> pts_wind = {
+            {c.x, c.y - r + 25},
+            {c.x - 12, c.y - r - 4},
+            {c.x, c.y - r + 6},
+            {c.x + 12, c.y - r - 4}
+        };
+        if (bv_awd->valid) {
+            fillPoly4(rotatePoints(c, pts_wind, bv_awd->value), commonData->fgcolor);
+        }
+
+        // Title and corner value headings
+        getdisplay().setTextColor(commonData->fgcolor);
+        getdisplay().setFont(&Ubuntu_Bold10pt8b);
+        // Left
+        getdisplay().setCursor(8, 36);
+        getdisplay().print("Anchor");
+        getdisplay().setCursor(8, 210);
+        getdisplay().print("Depth");
+        // Right
+        drawTextRalign(392, 80, "Chain");
+        drawTextRalign(392, 210, "Wind");
+
+        // Units
+        getdisplay().setCursor(8, 272);
+        getdisplay().print(sunit_dbs);
+        drawTextRalign(392, 272, sunit_aws);
+        // drawTextRalign(392, 100, lengthformat); // chain unit not implemented
+
+        // Corner values
+        getdisplay().setFont(&Ubuntu_Bold8pt8b);
+        getdisplay().setCursor(8, 54);
+        getdisplay().print(anchor_set ? "Dropped" : "Ready"); // Anchor state
+        getdisplay().setCursor(8, 72);
+        getdisplay().print("Alarm: "); // Alarm state
+        getdisplay().print(alarm_enabled ? "on" : "off");
+
+        getdisplay().setCursor(8, 120);
+        getdisplay().print("Zoom");
+        getdisplay().setCursor(8, 136);
+        getdisplay().print(zoom);
+
+        getdisplay().setCursor(8, 160);
+        getdisplay().print("diff");
+        getdisplay().setCursor(8, 176);
+        if (map_valid and bv_lat->valid and bv_lon->valid) {
+            getdisplay().print(String(posdiff));
+        } else {
+            getdisplay().print("n/a");
+        }
+
+        // Chain out TODO lengthformat ft/m
+        drawTextRalign(392, 96, String(chain) + " m");
+        drawTextRalign(392, 96+16, "of " + String(chain_length) + " m");
+
+        getdisplay().setFont(&DSEG7Classic_BoldItalic16pt7b);
+
+        // Depth
+        getdisplay().setCursor(8, 250);
+        getdisplay().print(sval_dbs);
+
+        // Wind
+        getdisplay().setCursor(320, 250);
+        getdisplay().print(sval_aws);
+
+        // Position of boat in center of map
+        getdisplay().setFont(&IBM8x8px);
+        drawTextRalign(392, 34, sval_lat);
+        drawTextRalign(392, 44, sval_lon);
+        // quality
+        String hdop = "HDOP: ";
+        if (bv_hdop->valid) {
+            hdop += String(round(bv_hdop->value));
+        } else {
+            hdop += " n/a";
+        }
+        drawTextRalign(392, 54, hdop);
+
+        // zoom scale
+        getdisplay().drawLine(c.x + 10, c.y, c.x + r - 4, c.y, commonData->fgcolor);
+        // arrow left
+        getdisplay().drawLine(c.x + 10, c.y, c.x + 16, c.y - 4, commonData->fgcolor);
+        getdisplay().drawLine(c.x + 10, c.y, c.x + 16, c.y + 4, commonData->fgcolor);
+        // arrow right
+        getdisplay().drawLine(c.x + r - 4, c.y, c.x + r - 10, c.y - 4, commonData->fgcolor);
+        getdisplay().drawLine(c.x + r - 4, c.y, c.x + r - 10, c.y + 4, commonData->fgcolor);
+        getdisplay().setFont(&Ubuntu_Bold8pt8b);
+        drawTextCenter(c.x + r / 2, c.y + 8, String(scale, 0) + "m");
+
+        // draw anchor symbol (as bitmap)
+        getdisplay().drawXBitmap(c.x - anchor_width / 2, c.y - anchor_height / 2,
+            anchor_bits, anchor_width, anchor_height, commonData->fgcolor);
+
+    }
+
+    void displayModeConfig(PageData &pageData) {
+
+        getdisplay().setTextColor(commonData->fgcolor);
+        getdisplay().setFont(&Ubuntu_Bold12pt8b);
+        getdisplay().setCursor(8, 48);
+        getdisplay().print("Anchor configuration");
+
+        getdisplay().setFont(&Ubuntu_Bold8pt8b);
+
+        getdisplay().setCursor(8, 260);
+        getdisplay().print("Press BACK to leave config");
+
+/*        getdisplay().setCursor(8, 68);
+        getdisplay().printf("Server: %s", server_name.c_str());
+        getdisplay().setCursor(8, 88);
+        getdisplay().printf("Port: %d", server_port);
+        getdisplay().setCursor(8, 108);
+        getdisplay().printf("Tilepath: %s", tile_path.c_str());
+        getdisplay().setCursor(8, 128);
+        getdisplay().printf("Last mapsize: %d", last_mapsize);
+        getdisplay().setCursor(8, 148);
+        getdisplay().printf("Last error: %s", errmsg);
+        getdisplay().setCursor(8, 168);
+        getdisplay().printf("Loops: %d, Readbytes: %d", loops, readbytes);
+        */
+
+        GwApi::BoatValue *bv_lat = pageData.values[4]; // LAT
+        GwApi::BoatValue *bv_lon = pageData.values[5]; // LON
+        if (!bv_lat->valid or !bv_lon->valid) {
+            getdisplay().setCursor(8, 228);
+            getdisplay().printf("No valid position: background map disabled");
+        }
+
+        // Display menu
+        getdisplay().setFont(&Ubuntu_Bold8pt8b);
+        for (int i = 0 ; i < menu->getItemCount(); i++) {
+            ConfigMenuItem *itm = menu->getItemByIndex(i);
+            if (!itm) {
+               commonData->logger->logDebug(GwLog::ERROR, "Menu item not found: %d", i);
+            } else {
+                Rect r = menu->getItemRect(i);
+                bool inverted = (i == menu->getActiveIndex());
+                drawTextBoxed(r, itm->getLabel(), commonData->fgcolor, commonData->bgcolor, inverted, false);
+                if (inverted and editmode > 0) {
+                    // triangle as edit marker
+                    getdisplay().fillTriangle(r.x + r.w + 20, r.y, r.x + r.w + 30, r.y + r.h / 2, r.x + r.w + 20, r.y + r.h,  commonData->fgcolor);
+                }
+                getdisplay().setCursor(r.x + r.w + 40, r.y + r.h - 4);
+                if (itm->getType() == "int") {
+                    getdisplay().print(itm->getValue());
+                    getdisplay().print(itm->getUnit());
+                } else {
+                     getdisplay().print(itm->getValue() == 0 ? "No" : "Yes");
+                }
+            }
+        }
+
+    }
+
+public:
+    PageAnchor(CommonData &common) 
+    {
+        commonData = &common;
+        common.logger->logDebug(GwLog::LOG,"Instantiate PageAnchor");
+
+        String mapsource = common.config->getString(common.config->mapsource);
+        if (mapsource == "Local Service") {
+            map_service = 'L';
+            server_name = common.config->getString(common.config->ipAddress);
+            server_port = common.config->getInt(common.config->localPort);
+            tile_path = "";
+        } else if (mapsource == "Remote Service") {
+            map_service = 'R';
+            server_name = common.config->getString(common.config->mapServer);
+            tile_path = common.config->getString(common.config->mapTilePath);
+        } else { // OBP Service or undefined
+            map_service = 'O';
+            server_name = "norbert-walter.dnshome.de";
+            tile_path = "";
+        }
+        zoom = common.config->getInt(common.config->zoomlevel);
+
+        lengthformat = common.config->getString(common.config->lengthFormat);
+        chain_length = common.config->getInt(common.config->chainLength);
+
+        if (simulation) {
+            map_lat = 53.56938345759218;
+            map_lon = 9.679658234303275;
+        }
+
+        canvas = new GFXcanvas1(264, 260); // Byte aligned, no padding!
+
+        // Initialize config menu
+        menu = new ConfigMenu("Options", 40, 80);
+        menu->setItemDimension(150, 20);
+        ConfigMenuItem *newitem;
+        newitem = menu->addItem("chain", "Chain out", "int", 0, "m");
+        newitem->setRange(0, 200, {1, 2, 5, 10});
+        newitem = menu->addItem("alarm", "Alarm", "bool", 0, "");
+        newitem = menu->addItem("alarm", "Alarm range", "int", 50, "m");
+        newitem->setRange(0, 200, {1, 2, 5, 10});
+        newitem = menu->addItem("raise", "Raise Anchor", "bool", 0, "");
+        newitem = menu->addItem("zoom", "Zoom", "int", 15, "");
+        newitem->setRange(14, 17, {1});
+        menu->setItemActive("chain");
+
+    }
+
+    void setupKeys(){
+        Page::setupKeys();
+        commonData->keydata[0].label = "CFG";
+#ifdef BOARD_OBP40S3
+        commonData->keydata[1].label = "DROP";
+#endif
+#ifdef BOARD_OBP60S3
+        commonData->keydata[4].label = "DROP";
+#endif
+    }
+
+    // TODO OBP40 / OBP60 different handling
+    int handleKey(int key) {
+        commonData->logger->logDebug(GwLog::LOG, "Page Anchor handle key %d", key);
+        if (key == 1) { // Switch between normal and config mode
+            if (mode == 'N') {
+                mode = 'C';
+#ifdef BOARD_OBP40S3
+                commonData->keydata[0].label = "BACK";
+                commonData->keydata[1].label = "EDIT";
+#endif
+            } else {
+                mode = 'N';
+#ifdef BOARD_OBP40S3
+                commonData->keydata[0].label = "CFG";
+                commonData->keydata[1].label = anchor_set ? "RAISE": "DROP";
+#endif
+#ifdef BOARD_OBP60S3
+                commonData->keydata[4].label = anchor_set ? "RAISE": "DROP";
+#endif
+            }
+            return 0;
+        }
+        if (key == 2) {
+            if (mode == 'N') {
+                anchor_set = !anchor_set;
+                commonData->keydata[1].label = anchor_set ? "ALARM": "DROP";
+                if (anchor_set) {
+                    anchor_lat = bv_lat->value;
+                    anchor_lon =  bv_lon->value;
+                    anchor_depth = bv_dbs->value;
+                    // TODO set timestamp
+                    // anchor_ts =
+                }
+                return 0;
+            } else if (mode == 'C') {
+                // Change edit mode
+                if (editmode > 0) {
+                    editmode = 0;
+                    commonData->keydata[1].label = "EDIT";
+                } else {
+                    editmode = 1;
+                    commonData->keydata[1].label = "OK";
+                }
+            }
+        }
+        if (key == 9) {
+            // OBP40 Down
+            if (mode == 'C') {
+                if (editmode > 0) {
+                    // decrease current menu item
+                     menu->getActiveItem()->decValue();
+                } else {
+                    // move to next menu item
+                     menu->goNext();
+                }
+                return 0;
+            }
+        }
+        if (key == 10) {
+            // OBP40 Up
+            if (mode == 'C') {
+                if (editmode > 0) {
+                    // increase current menu item
+                     ConfigMenuItem *itm = menu->getActiveItem();                    
+                     commonData->logger->logDebug(GwLog::LOG, "step = %d", itm->getStep());
+                     itm->incValue();
+                } else {
+                    // move to previous menu item
+                     menu->goPrev();
+                }
+                return 0;
+            }
+        }
+        // Code for keylock
+        if (key == 11) {
+            commonData->keylock = !commonData->keylock;
+            return 0;
+        }
+        return key;
+    }
+
+    int rhumb(double lat1, double lon1, double lat2, double lon2) {
+        // calc distance in m between two geo points
+        static const double degToRad = M_PI / 180.0;
+        lat1 = degToRad * lat1;
+        lon1 = degToRad * lon1;
+        lat2 = degToRad * lat2;
+        lon2 = degToRad * lon2;
+        double dlon = lon2 - lon1;
+        double dlat = lat2 - lat1;
+        double mlat = (lat1 + lat2) / 2;
+        return (int) (6371000 * sqrt(pow(dlat, 2) + pow(cos(mlat) * dlon, 2)));
+    }
+
+    bool getBackgroundMap(double lat, double lon, uint8_t zoom) {
+        // HTTP-Request for map
+        // TODO über pagedata -> status abfragen?
+        if (WiFi.status() != WL_CONNECTED) {
+            return false;
+        }
+        bool valid = false;
+        HTTPClient http;
+        const char* headerKeys[] = { "Content-Encoding", "Content-Length" };
+        http.collectHeaders(headerKeys, 2);
+        String url = "http://" + server_name + "/" + tile_path;
+        String parameter = "?lat=" + String(lat, 6) + "&lon=" + String(lon, 6)+ "&zoom=" + String(zoom)
+                         + "&width=" + String(map_width) + "&height=" + String(map_height);
+        commonData->logger->logDebug(GwLog::LOG, "HTTP query: %s", String(url + parameter).c_str());
+        http.begin(url + parameter);
+        http.addHeader("Accept-Encoding", "deflate");
+        int httpCode = http.GET();
+        if (httpCode > 0) {
+            commonData->logger->logDebug(GwLog::LOG, "HTTP GET result code: %d", httpCode);
+            if (httpCode == HTTP_CODE_OK) {
+                WiFiClient* stream = http.getStreamPtr();
+                int size = http.getSize();
+                String encoding = http.header("Content-Encoding");
+                commonData->logger->logDebug(GwLog::LOG, "HTTP size: %d, encoding: '%s'", size, encoding);
+                bool is_gzip = encoding.equalsIgnoreCase("deflate");
+
+                uint8_t header[14]; // max: P4<LF>wwww wwww<LF>
+                int header_size = 0;
+                bool header_read = false;
+                int n = 0;
+                int ix = 0;
+
+                uint8_t* buf = canvas->getBuffer();
+
+                if (is_gzip) {
+                    /* gzip compressed data
+                     * has to be decompressed into a buffer big enough 
+                     * to hold the whole data.
+                     * so the PBM header is included
+                     * search a method to use that as canvas without
+                     * additional copy 
+                     */
+                    commonData->logger->logDebug(GwLog::LOG, "Map received in gzip encoding");
+
+                    #define HEADER_MAX 24
+                    #define HTTP_CHUNK 512
+                    uint8_t in_buf[HTTP_CHUNK];
+                    uint8_t header_buf[HEADER_MAX];
+                    tinfl_decompressor decomp;
+                    tinfl_init(&decomp);
+                    size_t bitmap_written = 0;
+                    size_t header_written = 0;
+                    bool header_done = false;
+                    int row_bytes = 0;
+                    size_t expected_bitmap = 0;
+
+                    while (stream->connected() || stream->available()) {
+                        int bytes_read = stream->read(in_buf, HTTP_CHUNK);
+                        if (bytes_read <= 0) break;
+commonData->logger->logDebug(GwLog::LOG, "stream: bytes_read=%d", bytes_read);
+                        size_t in_ofs = 0; // offset
+                        while (in_ofs < (size_t)bytes_read) {
+                            size_t in_size = bytes_read - in_ofs;
+                            size_t out_size;
+                            uint8_t *out_ptr;
+                            uint8_t *out_ptr_next;
+                            if (!header_done) {
+                                if (header_written >= HEADER_MAX) {
+                                    commonData->logger->logDebug(GwLog::LOG, "PBM header too large");
+                                    return false;
+                                }
+                                out_ptr = header_buf + header_written;
+                                out_size = HEADER_MAX - header_written;
+                            } else {
+                                out_ptr = buf + bitmap_written;
+                                out_size = expected_bitmap - bitmap_written;
+                            }
+commonData->logger->logDebug(GwLog::LOG, "in_size=%d, out_size=%d", in_size, out_size);
+ // TODO correct loop !!!
+ // tinfl_status tinfl_decompress(
+ // tinfl_decompressor *r,
+ // const mz_uint8 *pIn_buf_next,
+ // size_t *pIn_buf_size,
+ // mz_uint8 *pOut_buf_start
+ // mz_uint8 *pOut_buf_next,
+ // size_t *pOut_buf_size,
+ // const mz_uint32 decomp_flags)
+                            tinfl_status status = tinfl_decompress(
+                                &decomp,
+                                in_buf + in_ofs, // start address in input buffer
+                                &in_size,        // number of bytes to process
+                                out_ptr,         // start of output buffer
+                                out_ptr,         // next write position in output buffer
+                                &out_size,       // free size in output buffer
+                                // TINFL_FLAG_PARSE_ZLIB_HEADER |
+                                TINFL_FLAG_HAS_MORE_INPUT |
+                                TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF
+                            );
+                            if (status < 0) {
+                                commonData->logger->logDebug(GwLog::LOG, "Decompression error (%d)", status);
+                                return false;
+                            }
+                            in_ofs += in_size;
+                            commonData->logger->logDebug(GwLog::LOG, "in_size=%d, in_ofs=%d", in_size, in_ofs);
+
+                            if (!header_done) {
+                                commonData->logger->logDebug(GwLog::LOG, "Decoding header");
+                                header_written += out_size;
+
+                                // Detect header end: two '\n'
+                                char *first_nl = strchr((char*)header_buf, '\n');
+                                if (!first_nl) continue;
+
+                                char *second_nl = strchr(first_nl + 1, '\n');
+                                if (!second_nl) continue;
+
+                                // Null-terminate header for sscanf
+                                header_buf[header_written < HEADER_MAX ? header_written : HEADER_MAX - 1] = 0;
+
+                                // Check magic
+                                if (strncmp((char*)header_buf, "P4", 2) != 0) {
+                                    commonData->logger->logDebug(GwLog::LOG, "Invalid PBM magic");
+                                    return false;
+                                }
+
+                                // Parse width and height strictly
+                                int header_width = 0, header_height = 0;
+                                if (sscanf((char*)header_buf, "P4\n%d %d", &header_width, &header_height) != 2) {
+                                    commonData->logger->logDebug(GwLog::LOG, "Failed to parse PBM dimensions");
+                                    return false;
+                                }
+
+                                if (header_width != map_width || header_height != map_height) {
+                                    commonData->logger->logDebug(GwLog::LOG, "PBM size mismatch: header %dx%d, requested %dx%d\n",
+                                        header_width, header_height, map_width, map_height);
+                                    return false;
+                                }
+                                commonData->logger->logDebug(GwLog::LOG, "Header: %dx%d", header_width, header_height);
+
+                                // Compute row bytes and expected bitmap size
+                                row_bytes = (header_width + 7) / 8;
+                                commonData->logger->logDebug(GwLog::LOG, "row_bytes=%d", row_bytes);
+                                expected_bitmap = (size_t)row_bytes * header_height;
+                                commonData->logger->logDebug(GwLog::LOG, "expected_bitmap=%d", expected_bitmap);
+
+                                // Copy any extra decompressed bitmap after header
+                                size_t header_size = (second_nl + 1) - (char*)header_buf;
+                                commonData->logger->logDebug(GwLog::LOG, "header_size=%d", header_size);
+                                size_t extra_bitmap = header_written - header_size;
+                                commonData->logger->logDebug(GwLog::LOG, "extra bitmap=%d", extra_bitmap);
+
+                                header_done = true;
+
+                                if (extra_bitmap > 0) {
+                                    memcpy(buf, header_buf + header_size, extra_bitmap);
+                                    bitmap_written = extra_bitmap;
+                                }
+                            } else {
+                                bitmap_written += out_size;
+                                if (bitmap_written >= expected_bitmap) {
+                                    commonData->logger->logDebug(GwLog::LOG, "Image fully received");
+                                }
+                            }
+                            commonData->logger->logDebug(GwLog::LOG, "bitmap_written=%d", bitmap_written);
+                        }
+                    }
+                } else {
+                    // uncompressed data
+                    commonData->logger->logDebug(GwLog::LOG, "Map received uncompressed");
+                    while (stream->available()) {
+                        uint8_t b = stream->read();
+                        n += 1;
+                        if ((! header_read) and (n < 13) ) {
+                            header[n-1] = b;
+                            if ((n > 3) and (b == 0x0a)) {
+                                header_read = true;
+                                header_size = n;
+                                header[n] = 0;
+                            }
+                        } else {
+                            // write image data to canvas buffer
+                            buf[ix++] = b;
+                        }
+                    }
+                    if (n == size) {
+                        valid = true;
+                    }
+                }
+                commonData->logger->logDebug(GwLog::LOG, "HTTP: final bytesRead=%d, header-size=%d", n, header_size);
+            } else {
+                commonData->logger->logDebug(GwLog::LOG, "HTTP result #%d", httpCode);
+            }
+        } else {
+            commonData->logger->logDebug(GwLog::ERROR, "HTTP error #%d", httpCode);
+        }
+        http.end();
+        return valid;
+    }
+
+    void displayNew(PageData &pageData){
+
+        GwApi::BoatValue *bv_lat = pageData.values[4]; // LAT
+        GwApi::BoatValue *bv_lon = pageData.values[5]; // LON
+
+        // check if valid data available
+        if (!bv_lat->valid or !bv_lon->valid) {
+            map_valid = false;
+            return;
+        }
+
+        errmsg = "";
+
+        map_lat = bv_lat->value; // save for later comparison
+        map_lon = bv_lon->value;
+        map_valid = getBackgroundMap(map_lat, map_lon, zoom);
+
+        if (map_valid) {
+            // prepare visible space for anchor-symbol or boat
+            canvas->fillCircle(132, 130, 10, commonData->fgcolor);
+        }
+    };
+
+    void display_side_keys() {
+        // An rechter Seite neben dem Rad inc, dec, set etc ?
+    }
+
+    int displayPage(PageData &pageData) {
+
+        // Logging boat values
+        commonData->logger->logDebug(GwLog::LOG, "Drawing at PageAnchor; Mode=%c", mode);
+
+        // Set display in partial refresh mode
+        getdisplay().setPartialWindow(0, 0, getdisplay().width(), getdisplay().height()); // Set partial update
+
+       if (mode == 'N') {
+           displayModeNormal(pageData);
+       } else if (mode == 'C') {
+           displayModeConfig(pageData);
+       }
+
+        return PAGE_UPDATE;
+    };
+};
+
+static Page *createPage(CommonData &common){
+    return new PageAnchor(common);
+}
+
+/**
+ * with the code below we make this page known to the PageTask
+ * we give it a type (name) that can be selected in the config
+ * we define which function is to be called
+ * and we provide the number of user parameters we expect
+ * this will be number of BoatValue pointers in pageData.values
+ */
+PageDescription registerPageAnchor(
+    "Anchor",   // Page name
+    createPage, // Action
+    0,          // Number of bus values depends on selection in Web configuration
+    {"DBS", "HDT", "AWS", "AWD", "LAT", "LON", "HDOP"}, // Names of bus values undepends on selection in Web configuration (refer GwBoatData.h)
+    true        // Show display header on/off
+);
+
+#endif

lib/obp60task/Pagedata.h

@@ -110,6 +110,7 @@ typedef struct{
     AlarmData alarm;
     GwApi::BoatValue *time = nullptr;
     GwApi::BoatValue *date = nullptr;
+    float tz = 0.0; // timezone from config
     uint16_t fgcolor;
     uint16_t bgcolor;
     bool keylock = false;

lib/obp60task/config_obp40.json

@@ -75,6 +75,20 @@
             "obp40": "true"
         }
     },
+    {
+        "name": "chainLength",
+        "label": "Anchor Chain Length [m]",
+        "type": "number",
+        "default": "0",
+        "check": "checkMinMax",
+        "min": 0,
+        "max": 255,
+        "description": "The length of the anchor chain [0...255m]",
+        "category": "OBP40 Settings",
+        "capabilities": {
+            "obp40": "true"
+        }
+    },
     {
         "name": "fuelTank",
         "label": "Fuel Tank [l]",
@@ -678,7 +692,7 @@
         "type": "string",
         "default": "text1",
         "description": "Button name",
-        "category": "OBP60 IO-Modul1",
+        "category": "OBP40 IO-Modul1",
         "capabilities": {
             "obp40":"true"
         }
@@ -689,7 +703,7 @@
         "type": "string",
         "default": "text2",
         "description": "Button name",
-        "category": "OBP60 IO-Modul1",
+        "category": "OBP40 IO-Modul1",
         "capabilities": {
             "obp40":"true"
         }
@@ -700,7 +714,7 @@
         "type": "string",
         "default": "text3",
         "description": "Button name",
-        "category": "OBP60 IO-Modul1",
+        "category": "OBP40 IO-Modul1",
         "capabilities": {
             "obp40":"true"
         }
@@ -711,7 +725,7 @@
         "type": "string",
         "default": "text4",
         "description": "Button name",
-        "category": "OBP60 IO-Modul1",
+        "category": "OBP40 IO-Modul1",
         "capabilities": {
             "obp40":"true"
         }
@@ -722,7 +736,7 @@
         "type": "string",
         "default": "text5",
         "description": "Button name",
-        "category": "OBP60 IO-Modul1",
+        "category": "OBP40 IO-Modul1",
         "capabilities": {
             "obp40":"true"
         }
@@ -1067,7 +1081,8 @@
         "description": "Type of map source, cloud service or local service",
         "list": [
             "OBP Service",
-            "Local Service"
+            "Local Service",
+            "Remote Service"
         ],
         "category": "OBP40 Navigation",
         "capabilities": {
@@ -1104,6 +1119,34 @@
             { "mapsource": ["Local Service"] }
         ]
     },
+    {
+        "name": "mapServer",
+        "label": "map server",
+        "type": "string",
+        "default": "",
+        "description": "Server for converting map tiles. Use only one hostname or IP address",
+        "category": "OBP40 Navigation",
+        "capabilities": {
+            "obp40": "true"
+        },
+        "condition": [
+            { "mapsource": ["Remote Service"] }
+        ]
+    },
+    {
+        "name": "mapTilePath",
+        "label": "map tile path",
+        "type": "string",
+        "default": "map.php",
+        "description": "Path to converter access e.g. index.php or map.php",
+        "category": "OBP40 Navigation",
+        "capabilities": {
+            "obp40": "true"
+        },
+        "condition": [
+            { "mapsource": ["Remote Service"] }
+        ]
+    },
     {
         "name": "maptype",
         "label": "Map Type",
@@ -1509,7 +1552,6 @@
             "obp40": "true"
         }
     },
-
     {
         "name": "page1type",
         "label": "Type",
@@ -1517,6 +1559,7 @@
         "default": "Voltage",
         "description": "Type of page for page 1",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -1847,6 +1890,7 @@
         "default": "WindRose",
         "description": "Type of page for page 2",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -2168,6 +2212,7 @@
         "default": "OneValue",
         "description": "Type of page for page 3",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -2480,6 +2525,7 @@
         "default": "TwoValues",
         "description": "Type of page for page 4",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -2783,6 +2829,7 @@
         "default": "ThreeValues",
         "description": "Type of page for page 5",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -3077,6 +3124,7 @@
         "default": "FourValues",
         "description": "Type of page for page 6",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -3362,6 +3410,7 @@
         "default": "FourValues2",
         "description": "Type of page for page 7",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -3638,6 +3687,7 @@
         "default": "Clock",
         "description": "Type of page for page 8",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -3905,6 +3955,7 @@
         "default": "RollPitch",
         "description": "Type of page for page 9",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -4163,6 +4214,7 @@
         "default": "Battery2",
         "description": "Type of page for page 10",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",

lib/obp60task/config_obp60.json

@@ -75,6 +75,20 @@
             "obp60":"true"
         }
     },
+    {
+        "name": "chainLength",
+        "label": "Anchor Chain Length [m]",
+        "type": "number",
+        "default": "0",
+        "check": "checkMinMax",
+        "min": 0,
+        "max": 255,
+        "description": "The length of the anchor chain [0...255m]",
+        "category": "OBP60 Settings",
+        "capabilities": {
+            "obp60":"true"
+        }
+    },
     {
         "name": "fuelTank",
         "label": "Fuel Tank [l]",
@@ -1093,6 +1107,34 @@
             { "mapsource": ["Local Service"] }
         ]
     },
+    {
+        "name": "mapServer",
+        "label": "map server",
+        "type": "string",
+        "default": "",
+        "description": "Server for converting map tiles. Use only one hostname or IP address",
+        "category": "OBP60 Navigation",
+        "capabilities": {
+            "obp60": "true"
+        },
+        "condition": [
+            { "mapsource": ["Remote Service"] }
+        ]
+    },
+    {
+        "name": "mapTilePath",
+        "label": "map tile path",
+        "type": "string",
+        "default": "map.php",
+        "description": "Path to converter access e.g. index.php or map.php",
+        "category": "OBP40 Navigation",
+        "capabilities": {
+            "obp40": "true"
+        },
+        "condition": [
+            { "mapsource": ["Remote Service"] }
+        ]
+    },
     {
         "name": "maptype",
         "label": "Map Type",
@@ -1486,7 +1528,6 @@
             "obp60":"true"
         }
     },
-
     {
         "name": "page1type",
         "label": "Type",
@@ -1494,6 +1535,7 @@
         "default": "Voltage",
         "description": "Type of page for page 1",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -1794,6 +1836,7 @@
         "default": "WindRose",
         "description": "Type of page for page 2",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -2086,6 +2129,7 @@
         "default": "OneValue",
         "description": "Type of page for page 3",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -2370,6 +2414,7 @@
         "default": "TwoValues",
         "description": "Type of page for page 4",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -2646,6 +2691,7 @@
         "default": "ThreeValues",
         "description": "Type of page for page 5",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -2914,6 +2960,7 @@
         "default": "FourValues",
         "description": "Type of page for page 6",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -3174,6 +3221,7 @@
         "default": "FourValues2",
         "description": "Type of page for page 7",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -3426,6 +3474,7 @@
         "default": "Clock",
         "description": "Type of page for page 8",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -3670,6 +3719,7 @@
         "default": "RollPitch",
         "description": "Type of page for page 9",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",
@@ -3906,6 +3956,7 @@
         "default": "Battery2",
         "description": "Type of page for page 10",
         "list": [
+            "Anchor",
             "BME280",
             "Battery",
             "Battery2",

lib/obp60task/obp60task.cpp

@@ -264,6 +264,8 @@ void registerAllPages(PageList &list){
     list.add(&registerPageDigitalOut);
     extern PageDescription registerPageAutopilot;
     list.add(&registerPageAutopilot);
+    extern PageDescription registerPageAnchor;
+    list.add(&registerPageAnchor);
 }
 
 // Undervoltage detection for shutdown display
@@ -525,8 +527,8 @@ void OBP60Task(GwApi *api){
     // Configuration values for main loop
     String gpsFix = api->getConfig()->getConfigItem(api->getConfig()->flashLED,true)->asString();
     String gpsOn=api->getConfig()->getConfigItem(api->getConfig()->useGPS,true)->asString();
-    float tz = api->getConfig()->getConfigItem(api->getConfig()->timeZone,true)->asFloat();
 
+    commonData.tz = api->getConfig()->getConfigItem(api->getConfig()->timeZone,true)->asFloat();
     commonData.backlight.mode = backlightMapping(config->getConfigItem(config->backlight,true)->asString());
     commonData.backlight.color = colorMapping(config->getConfigItem(config->blColor,true)->asString());
     commonData.backlight.brightness = uint(config->getConfigItem(config->blBrightness,true)->asInt());
@@ -701,7 +703,7 @@ void OBP60Task(GwApi *api){
                 starttime5 = millis();
                 if(time->valid == true && date->valid == true && lat->valid == true && lon->valid == true){
                     // Provide sundata to all pages
-                    commonData.sundata = calcSunsetSunrise(time->value , date->value, lat->value, lon->value, tz);
+                    commonData.sundata = calcSunsetSunrise(time->value , date->value, lat->value, lon->value, commonData.tz);
                     // Backlight with sun control
                     if (commonData.backlight.mode == BacklightMode::SUN) {
                     // if(String(backlight) == "Control by Sun"){
@@ -714,7 +716,7 @@ void OBP60Task(GwApi *api){
                     }
                 } else if (homevalid and commonData.data.rtcValid) {
                     // No gps fix but valid home location and time configured
-                    commonData.sundata = calcSunsetSunriseRTC(&commonData.data.rtcTime, homelat, homelon, tz);
+                    commonData.sundata = calcSunsetSunriseRTC(&commonData.data.rtcTime, homelat, homelon, commonData.tz);
                 }
             }
             

lib/obp60task/platformio.ini

@@ -107,8 +107,8 @@ build_flags=
     -D HARDWARE_V10                 #OBP40 hardware revision V1.0 SKU:DIE07300S V1.1 (CrowPanel 4.2)
     -D DISPLAY_GDEY042T81           #new E-Ink display from Good Display (Waveshare), R10 2.2 ohm - good (contast lost by shunshine)
     #-D DISPLAY_ZJY400300-042CAAMFGN #alternativ E-Ink display from ZZE Technology, R10 2.2 ohm - very good   
-    -D LIPO_ACCU_1200               #Hardware extension, LiPo accu 3,7V 1200mAh
+    #-D LIPO_ACCU_1200               #Hardware extension, LiPo accu 3,7V 1200mAh
-    -D VOLTAGE_SENSOR               #Hardware extension, LiPo voltage sensor with two resistors
+    #-D VOLTAGE_SENSOR               #Hardware extension, LiPo voltage sensor with two resistors
     #-D ENABLE_PATCHES               #enable patching of gateway code
     ${env.build_flags}
 upload_port = /dev/ttyUSB0          #OBP40 download via external USB/Serail converter