Create settings.js

apps/speedalt/settings.js

@@ -0,0 +1,36 @@
+(function(back) {
+  let settings = require('Storage').readJSON('speedalt.json',1)||{};
+  
+  /*
+  function save(key, value) {
+    settings[key] = value;
+    require('Storage').write('settings.json',settings);
+  }
+  */
+
+  function setUnits(m,u) {
+    settings['spd'] = m;
+    settings['spd_unit'] = u;
+    require('Storage').write('settings.json',settings);
+  }
+
+  function setUnitsAlt(m,u) {
+    settings['alt'] = m;
+    settings['alt_unit'] = u;
+    require('Storage').write('settings.json',settings);
+  }
+
+
+  const appMenu = {
+    '': {'title': 'Units'},
+    '< Back': back,
+    'default (spd)' : function() { setUnits(0,''); },
+    "Kph (spd)" : function() { setUnits(1,'kph'); },
+    "Knots (spd)" : function() { setUnits(1.852,'knots'); },
+    "Mph (spd)" : function() { setUnits(1.60934,'mph'); },
+    "m/s (spd)" : function() { setUnits(3.6,'m/s'); },
+    "Meters (alt)" : function() { setUnitsAlt(1,'m'); },
+    "Feet (alt)" : function() { setUnitsAlt(0.3048,'feet'); }
+  };
+  E.showMenu(appMenu)
+})