Update widalt.settings.js

apps/widalt/widalt.settings.js

@@ -1,4 +1,8 @@
 (function(back) {
+  var settings = Object.assign({
+    interval: 5000,
+  }, require('Storage').readJSON("widalt.json", true) || {});
+  o=Bangle.getOptions();
   Bangle.getPressure().then((p)=>{
     E.showMenu({
       "" : { "title" : "Altimeter Widget" },
@@ -8,6 +12,15 @@
         min: 100, max: 10000,
         format: v=>(v+"hPa\nAlt: "+(44330 * (1.0 - Math.pow(p.pressure/v, 0.1903))).toFixed(0)+"m"),
         onchange: v => {Bangle.setOptions({seaLevelPressure:v});}
+      },
+      'update Interval': {
+        value: settings.interval/1000,
+        min: 1, max: 60,
+        format: v=>(v+"s"),
+        onchange: v => {
+          settings.interval=v*1000;
+          require('Storage').writeJSON("widalt.json", settings);
+        }
       }
     });
   });