update gpssetup

apps/gpssetup/ChangeLog

@@ -1,3 +1,4 @@
 0.01: First version of GPS Setup app
 0.02: Created gppsetup module
 0.03: Added support for Bangle.js2
+0.04: Added adaptive option for PSMOO with Bangle.js2

apps/gpssetup/README.md

@@ -59,6 +59,7 @@ used. These settings will remain for all apps that use the GPS.
 
 - fix_req (Bangle.js2 only) - the number of fixes required before the GPS turns off until next search for GPS signal. default is 1.
 
+- adaptive (Bangle.js2 only) - When a GPS signal is acquired, this can reduce the time in seconds until next scan to generate higher temporal resolution of gps fixes. Off if set to 0.
 ## Module
 
 A module is provided that'll allow you to set GPS configuration from your own
@@ -69,11 +70,13 @@ app. To use it:
 // needed unless the watch's battery has run down
 require("gpssetup").setPowerMode();
 
-// This sets up the PSMOO mode. update/search are optional in seconds
+// This sets up the PSMOO mode. update/search/adaptive are optional in seconds
 require("gpssetup").setPowerMode({
   power_mode:"PSMOO",
   update:optional (default 120),
-  search:optional (default 5)})
+  search:optional (default 5),
+  adaptive: optional (default 0)
+  });
 
 // This sets up SuperE
 require("gpssetup").setPowerMode({power_mode:"SuperE"})

apps/gpssetup/gpssetup.js

@@ -165,9 +165,11 @@ function setupPSMOO(settings) {
       var gpsTimeout = null;
       var gpsActive = false;
       var fix = 0;
+      var lastFix = false;
       function cb(f){
         if(parseInt(f.fix) === 1){ 
           fix++;
+          lastFix = true;
           if(fix >= settings.fix_req){
             fix = 0;
             turnOffGPS();
@@ -180,9 +182,14 @@ function setupPSMOO(settings) {
         clearTimeout(gpsTimeout);
         Bangle.setGPSPower(0,settings.appName);
         Bangle.removeListener('GPS', cb); // cleaning it up
+        var timeout = settings.update * 1000;
+        if(lastFix && settings.adaptive > 0){
+          timeout = settings.adaptive * 1000;
+        }
+        lastFix = false;
         gpsTimeout = setTimeout(() => {
           turnOnGPS();
-        }, settings.update * 1000);
+        }, timeout);
       }
       function turnOnGPS(){
         if (gpsActive) return;
@@ -213,12 +220,14 @@ exports.setPowerMode = function(options) {
   if (options) {
     if (options.update) settings.update = options.update;
     if (options.search) settings.search = options.search;
+    if (options.adaptive) settings.adaptive = options.adaptive;
     if (options.fix_req) settings.fix_req = options.fix_req;
     if (options.power_mode) settings.power_mode = options.power_mode;
     if (options.appName) settings.appName = options.appName;
   }
   settings.update = settings.update||120;
   settings.search = settings.search||5;
+  settings.adaptive = settings.adaptive||0;
   settings.fix_req = settings.fix_req||1; //default to just one fix and will turn off 
   settings.power_mode = settings.power_mode||"SuperE";
   settings.appName = settings.appName||"gpssetup";