weather: show wind direction, check bluetooth status when showing "weather unknown"

apps.json

@@ -531,7 +531,7 @@
   { "id": "weather",
     "name": "Weather",
     "icon": "icon.png",
-    "version":"0.03",
+    "version":"0.05",
     "description": "Show Gadgetbridge weather report",
     "readme": "readme.md",
     "tags": "widget,outdoors",

apps/weather/ChangeLog

@@ -1,2 +1,4 @@
 0.02: Make minor adjustments to widget, and discard stale weather data after a configurable period.
-0.03: Fix flickering last updated time.
+0.03: Fix flickering last updated time.
+0.04: Adjust "weather unknown" message according to Bluetooth connection.
+0.05: Add wind direction.

apps/weather/app.js

@@ -30,10 +30,14 @@
     g.setFont("6x8", 1);
     g.setFontAlign(-1, 0, 0);
     g.drawString("Humidity", 135, 130);
-    g.drawString("Wind", 135, 142);
     g.setFontAlign(1, 0, 0);
     g.drawString(w.hum+"%", 225, 130);
-    g.drawString(locale.speed(w.wind), 225, 142);
+    if ('wind' in w) {
+      g.setFontAlign(-1, 0, 0);
+      g.drawString("Wind", 135, 142);
+      g.setFontAlign(1, 0, 0);
+      g.drawString(locale.speed(w.wind)+' '+w.wrose.toUpperCase(), 225, 142);
+    }
 
     g.setFont("6x8", 2).setFontAlign(0, 0, 0);
     g.drawString(w.loc, 120, 170);
@@ -56,10 +60,14 @@
   }
 
   function update() {
+    NRF.removeListener("connect", update);
     if (weather.current) {
       draw();
+    } else if (NRF.getSecurityStatus().connected) {
+      E.showMessage("Weather unknown\n\nIs Gadgetbridge\nweather reporting\nset up on your\nphone?");
     } else {
-      E.showMessage('Weather unknown\n\nIs Gadgetbridge\nconnected?');
+      E.showMessage("Weather unknown\n\nGadgetbridge\nnot connected");
+      NRF.on("connect", update);
     }
   }
 
@@ -77,7 +85,7 @@
 
   weather.on("update", update);
 
-  update(weather.current);
+  update();
 
   // Show launcher when middle button pressed
   setWatch(Bangle.showLauncher, BTN2, {repeat: false, edge: 'falling'});

apps/weather/lib.js

@@ -22,6 +22,20 @@ function scheduleExpiry(json) {
   }
 }
 
+/**
+ * Convert numeric direction into human-readable label
+ *
+ * @param {number} deg - Direction in degrees
+ * @return {string|null} - Nearest compass point
+ */
+function compassRose(deg) {
+  if (typeof deg === 'undefined') return null;
+  while (deg<0 || deg>360) {
+    deg = (deg+360)%360;
+  }
+  return ['n','ne','e','se','s','sw','w','nw','n'][Math.floor((deg+22.5)/45)];
+}
+
 function setCurrentWeather(json) {
   scheduleExpiry(json);
   exports.current = json.weather;
@@ -30,6 +44,9 @@ function setCurrentWeather(json) {
 function update(weatherEvent) {
   let weather = Object.assign({}, weatherEvent);
   weather.time = Date.now();
+  if ('wdir' in weather) {
+    weather.wrose = compassRose(weather.wdir);
+  }
   delete weather.t;
 
   let json = storage.readJSON('weather.json')||{};

apps/weather/readme.md

@@ -1,15 +1,15 @@
 # Weather
 
-Shows Gadgetbridge weather reports.
+This allows your Bangle.js to display weather reports from the Gadgetbridge app on an Android phone.
 
-This adds a widget with a weather pictogram and the temperature.   
+It adds a widget with a weather pictogram and the temperature.   
 You can view the full report through the app:   
 ![Screenshot](screenshot.png)
 
 ## Setup
 
-See [this guide](https://codeberg.org/Freeyourgadget/Gadgetbridge/wiki/Weather) 
-to setup Gadgetbridge weather reporting.
+1. Install [Gadgetbridge for Android](https://f-droid.org/packages/nodomain.freeyourgadget.gadgetbridge/) on your phone.
+2. Set up [Gadgetbridge weather reporting](https://codeberg.org/Freeyourgadget/Gadgetbridge/wiki/Weather).
 
 ## Controls