0.02: Created gppsetup module

apps.json

@@ -2771,11 +2771,12 @@
   "name": "GPS Setup",
   "shortName":"GPS Setup",
   "icon": "gpssetup.png",
-  "version":"0.01",
+  "version":"0.02",
   "description": "Configure the GPS power options and store them in the GPS nvram",
   "tags": "gps, tools, outdoors",
   "readme": "README.md",
   "storage": [
+    {"name":"gpssetup","url":"gpssetup.js"},
     {"name":"gpssetup.settings.js","url":"settings.js"},
     {"name":"gpssetup.settings.json","url":"settings.json"},
     {"name":"gpssetup.app.js","url":"app.js"},

apps/gpssetup/ChangeLog

@@ -1 +1,2 @@
 0.01: First version of GPS Setup app
+0.02: Created gppsetup module

apps/gpssetup/README.md

@@ -1,6 +1,6 @@
 # GPS Setup
 
-An App to enable the GPS to be configured into low power mode.
+An App and module to enable the GPS to be configured into low power mode.
 
 ## Goals
 
@@ -22,7 +22,7 @@ Example power consumption of the GPS while powered on:
   running with 45% battery 20 hours after it started.
 
 
-## Settings
+## Settings App
 
 The Settings App enables you set the options below. Either start the
 App from the launcher or go to Settings, select App/Widgets and then
@@ -38,11 +38,11 @@ used. These settings will remain for all apps that use the GPS.
 
 - Power Mode:
 
-   - SuperE - the factory default setup for the GPS. The recommended
+   - **SuperE** - the factory default setup for the GPS. The recommended
    power saving mode.  If you need frequent (every second) updates on
    position, then this is the mode for you.
 
-   - PSMOO - On/Off power saving mode. Configured by interval and
+   - **PSMOO** - On/Off power saving mode. Configured by interval and
    search time. Choose this mode if you are happy to get a GPS
    position update less often (say every 1 or 2 minutes). The longer
    the interval the more time the GPS will spend sleeping in low
@@ -55,6 +55,37 @@ used. These settings will remain for all apps that use the GPS.
 - search - the time between two acquisition attempts if the receiver
   is unable to get a position fix.
 
+## Module
+
+A module is provided that'll allow you to set GPS configuration from your own
+app. To use it:
+
+```
+// This will set up the GPS to current saved defaults. It's not normally
+// needed unless the watch's battery has run down
+require("gpssetup").setPowerMode();
+
+// This sets up the PSMOO mode. update/search are optional in seconds
+require("gpssetup").setPowerMode({
+  power_mode:"PSMOO",
+  update:optional (default 120),
+  search:optional (default 5)})
+
+// This sets up SuperE
+require("gpssetup").setPowerMode({power_mode:"SuperE"})
+```
+
+`setPowerMode` returns a promise, which is completed when the GPS is set up.
+
+So you can for instance do the following to turn the GPS off once it
+has been configured:
+
+```
+require("gpssetup").setPowerMode().then(function() {
+  Bangle.setGPSPower(0);
+});
+```  
+
 ## References
 
 * [UBLOX M8 Receiver Data Sheet](https://www.u-blox.com/sites/default/files/products/documents/u-blox8-M8_ReceiverDescrProtSpec_%28UBX-13003221%29.pdf)
@@ -63,4 +94,3 @@ used. These settings will remain for all apps that use the GPS.
 
 * Some useful code on Github can be found [here](https://portal.u-blox.com/s/question/0D52p0000925T00CAE/ublox-max-m8q-getting-stuck-when-sleeping-with-extint-pin-control)
 and [here](https://github.com/thasti/utrak/blob/master/gps.c)
-

apps/gpssetup/app.js

@@ -15,6 +15,11 @@
 Bangle.loadWidgets();
 Bangle.drawWidgets();
 
+function log_debug(o) {
+  //let timestamp = new Date().getTime();
+  //console.log(timestamp + " : " + o);
+}
+
 const SETTINGS_FILE = "gpssetup.settings.json";
 let settings = undefined;
 let settings_changed = false;
@@ -35,174 +40,15 @@ function loadSettings() {
 
 /***********  GPS Power and Setup Functions  ******************/
 
-function log_debug(o) {
-  //let timestamp = new Date().getTime();
-  //console.log(timestamp + " : " + o);
-}
-
 function setupGPS() {
   Bangle.setGPSPower(1);
-  if (settings.power_mode === "PSMOO") {
+  setTimeout(function() {
-    setupPSMOO();
+    require("gpssetup").setPowerMode().then(function() {
-  } else {
-    setupSuperE();
-  }
-}
-
-function delay(ms) {
-  return new Promise(resolve => setTimeout(resolve, ms));
-}
-
-function setupSuperE() {
-  log_debug("setupGPS() Super-E");
-  Promise.resolve().then(function() {
-    UBX_CFG_RESET();
-    return delay(100);
-  }).then(function() {
-    UBX_CFG_PMS();
-    return delay(20);
-  }).then(function() {
-    UBX_CFG_SAVE();
-    return delay(20);
-  }).then(function() {
-    log_debug("Powering GPS Off");
-    /*
-     * must be part of the promise chain to ensure that
-     * setup does not return and powerOff before config functions
-     * have run
-     *
-     */
       Bangle.setGPSPower(0);
-    return delay(20);
     });
+  }, 100);
 }
 
-function setupPSMOO() {
-  log_debug("setupGPS() PSMOO");
-  Promise.resolve().then(function() {
-    UBX_CFG_RESET();
-    return delay(100);
-  }).then(function() {
-    UBX_CFG_PM2(settings.update, settings.search);
-    return delay(20);
-  }).then(function() {
-    UBX_CFG_RXM();
-    return delay(20);
-  }).then(function() {
-    UBX_CFG_SAVE();
-    return delay(20);
-  }).then(function() {
-    log_debug("Powering GPS Off");
-    /*
-     * must be part of the promise chain to ensure that
-     * setup does not return and powerOff before config functions
-     * have run
-     *
-     */
-    Bangle.setGPSPower(0);
-    return delay(20);
-  });
-}
-
-function writeGPScmd(cmd) {
-  var d = [0xB5,0x62]; // sync chars
-  d = d.concat(cmd);
-  var a=0,b=0;
-  for (var i=2;i<d.length;i++) {
-    a += d[i];
-    b += a;
-  }
-  d.push(a&255,b&255);
-  Serial1.write(d);
-}
-
-// UBX-CFG-PMS - enable power management - Super-E
-function UBX_CFG_PMS() {
-  log_debug("UBX_CFG_PMS()");
-  writeGPScmd([0x06,0x86, // msg class + type
-               8,0,//length
-               0x00,0x03, 0,0, 0,0, 0,0]);  
-}
-
-// convert an integer to an array of bytes
-function int_2_bytes( x ){
-  var bytes = [];
-  var i = 4;
-  do {
-    bytes[--i] = x & (255);
-    x = x>>8;
-  } while (i);
-  
-  return bytes;
-}
-
-/*
- * Extended Power Management 
- * update and search are in milli seconds
- * settings are loaded little endian, lsb first
- *
- * https://github.com/thasti/utrak/blob/master/gps.c
- */
-function UBX_CFG_PM2(update,search) {
-  log_debug("UBX_CFG_PM2()");
-
-  var u = int_2_bytes(update*1000);
-  var s = int_2_bytes(search*1000);
-
-  writeGPScmd([0x06, 0x3B,                /* class id */
-               44, 0,                      /* length */
-               0x01, 0x00, 0x00, 0x00,    /* v1, reserved 1..3 */
-               0x00, 0x10, 0x00, 0x00,    /* on/off-mode, update ephemeris */
-               u[3], u[2], u[1], u[0],    /* update period, ms, 120s=00 01 D4 C0, 30s= 00 00 75 30 */
-               s[3], s[2], s[1], s[0],    /* search period, ms, 120s, 20s = 00 00 4E 20, 5s = 13 88 */
-               0x00, 0x00, 0x00, 0x00,    /* grid offset */
-               0x00, 0x00,              /* on-time after first fix */
-               0x01, 0x00,                /* minimum acquisition time */
-               0x00, 0x00, 0x00, 0x00,    /* reserved 4,5 */
-               0x00, 0x00, 0x00, 0x00,    /* reserved 6 */
-               0x00, 0x00, 0x00, 0x00,    /* reserved 7 */
-               0x00, 0x00, 0x00, 0x00,    /* reserved 8,9,10 */
-               0x00, 0x00, 0x00, 0x00]);  /* reserved 11 */
-}
-
-// enable power saving mode, after configured with PM2
-function UBX_CFG_RXM() {
-  log_debug("UBX_CFG_RXM()");
-  writeGPScmd([0x06, 0x11,      /* UBX-CFG-RXM */
-               2, 0,            /* length */
-               0x08, 0x01]);    /* reserved, enable power save mode */
-}
-
-
-/*
- * Save configuration otherwise it will reset when the GPS wakes up
- *
- */
-function UBX_CFG_SAVE() {
-  log_debug("UBX_CFG_SAVE()");
-  writeGPScmd([0x06, 0x09,   // class id
-               0x0D, 0x00,   // length
-               0x00, 0x00, 0x00, 0x00,  // clear mask
-               0xFF, 0xFF, 0x00, 0x00,  // save mask
-               0x00, 0x00, 0x00, 0x00,  // load mask
-               0x07]);                  // b2=eeprom b1=flash b0=bat backed ram
-}
-
-/*
- * Reset to factory settings using clear mask in UBX_CFG_CFG
- * https://portal.u-blox.com/s/question/0D52p0000925T00CAE/ublox-max-m8q-getting-stuck-when-sleeping-with-extint-pin-control
- */
-function UBX_CFG_RESET() {
-  log_debug("UBX_CFG_RESET()");
-  writeGPScmd([0x06, 0x09,   // class id 
-               0x0D, 0x00,
-               0xFF, 0xFB, 0x00, 0x00,  // clear mask
-               0x00, 0x00, 0x00, 0x00,  // save mask
-               0xFF, 0xFF, 0x00, 0x00,  // load mask
-               0x17]);
-}
-
-
 /***********  GPS Setup Menu App  *****************************/
 
 function showMainMenu() {
@@ -220,14 +66,13 @@ function showMainMenu() {
         updateSettings();
       },
     },
-
     'Update (s)': {
       value: settings.update,
       min: 10,
       max: 1800,
       step: 10,
       onchange: v => {
-	settings.update =v;
+        settings.update = v;
         updateSettings();
       }
     },
@@ -262,4 +107,3 @@ function exitSetup() {
 
 loadSettings();
 showMainMenu();
-

apps/gpssetup/gpssetup.js

@@ -0,0 +1,179 @@
+const SETTINGS_FILE = "gpssetup.settings.json";
+
+function log_debug(o) {
+  //let timestamp = new Date().getTime();
+  //console.log(timestamp + " : " + o);
+}
+
+function writeGPScmd(cmd) {
+  var d = [0xB5,0x62]; // sync chars
+  d = d.concat(cmd);
+  var a=0,b=0;
+  for (var i=2;i<d.length;i++) {
+    a += d[i];
+    b += a;
+  }
+  d.push(a&255,b&255);
+  Serial1.write(d);
+}
+
+// UBX-CFG-PMS - enable power management - Super-E
+function UBX_CFG_PMS() {
+  log_debug("UBX_CFG_PMS()");
+  writeGPScmd([0x06,0x86, // msg class + type
+               8,0,//length
+               0x00,0x03, 0,0, 0,0, 0,0]);
+}
+
+/*
+ * Extended Power Management
+ * update and search are in milli seconds
+ * settings are loaded little endian, lsb first
+ *
+ * https://github.com/thasti/utrak/blob/master/gps.c
+ */
+function UBX_CFG_PM2(update,search) {
+  log_debug("UBX_CFG_PM2()");
+
+  // convert an integer to an array of bytes
+  function int_2_bytes( x ){
+    var bytes = [];
+    var i = 4;
+    do {
+      bytes[--i] = x & (255);
+      x = x>>8;
+    } while (i);
+    return bytes;
+  }
+
+  var u = int_2_bytes(update*1000);
+  var s = int_2_bytes(search*1000);
+
+  writeGPScmd([0x06, 0x3B,                /* class id */
+               44, 0,                      /* length */
+               0x01, 0x00, 0x00, 0x00,    /* v1, reserved 1..3 */
+               0x00, 0x10, 0x00, 0x00,    /* on/off-mode, update ephemeris */
+               u[3], u[2], u[1], u[0],    /* update period, ms, 120s=00 01 D4 C0, 30s= 00 00 75 30 */
+               s[3], s[2], s[1], s[0],    /* search period, ms, 120s, 20s = 00 00 4E 20, 5s = 13 88 */
+               0x00, 0x00, 0x00, 0x00,    /* grid offset */
+               0x00, 0x00,              /* on-time after first fix */
+               0x01, 0x00,                /* minimum acquisition time */
+               0x00, 0x00, 0x00, 0x00,    /* reserved 4,5 */
+               0x00, 0x00, 0x00, 0x00,    /* reserved 6 */
+               0x00, 0x00, 0x00, 0x00,    /* reserved 7 */
+               0x00, 0x00, 0x00, 0x00,    /* reserved 8,9,10 */
+               0x00, 0x00, 0x00, 0x00]);  /* reserved 11 */
+}
+
+// enable power saving mode, after configured with PM2
+function UBX_CFG_RXM() {
+  log_debug("UBX_CFG_RXM()");
+  writeGPScmd([0x06, 0x11,      /* UBX-CFG-RXM */
+               2, 0,            /* length */
+               0x08, 0x01]);    /* reserved, enable power save mode */
+}
+
+/*
+ * Save configuration otherwise it will reset when the GPS wakes up
+  */
+function UBX_CFG_SAVE() {
+  log_debug("UBX_CFG_SAVE()");
+  writeGPScmd([0x06, 0x09,   // class id
+               0x0D, 0x00,   // length
+               0x00, 0x00, 0x00, 0x00,  // clear mask
+               0xFF, 0xFF, 0x00, 0x00,  // save mask
+               0x00, 0x00, 0x00, 0x00,  // load mask
+               0x07]);                  // b2=eeprom b1=flash b0=bat backed ram
+}
+
+/*
+ * Reset to factory settings using clear mask in UBX_CFG_CFG
+ * https://portal.u-blox.com/s/question/0D52p0000925T00CAE/ublox-max-m8q-getting-stuck-when-sleeping-with-extint-pin-control
+ */
+function UBX_CFG_RESET() {
+  log_debug("UBX_CFG_RESET()");
+  writeGPScmd([0x06, 0x09,   // class id
+               0x0D, 0x00,
+               0xFF, 0xFB, 0x00, 0x00,  // clear mask
+               0x00, 0x00, 0x00, 0x00,  // save mask
+               0xFF, 0xFF, 0x00, 0x00,  // load mask
+               0x17]);
+}
+
+function delay(ms) {
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+function setupSuperE() {
+  log_debug("setupGPS() Super-E");
+  return Promise.resolve().then(function() {
+    UBX_CFG_RESET();
+    return delay(100);
+  }).then(function() {
+    UBX_CFG_PMS();
+    return delay(20);
+  }).then(function() {
+    UBX_CFG_SAVE();
+    return delay(20);
+  }).then(function() {
+    log_debug("Powering GPS Off");
+    /*
+     * must be part of the promise chain to ensure that
+     * setup does not return and powerOff before config functions
+     * have run
+     */
+    return delay(20);
+  });
+}
+
+function setupPSMOO(settings) {
+  log_debug("setupGPS() PSMOO");
+  return Promise.resolve().then(function() {
+    UBX_CFG_RESET();
+    return delay(100);
+  }).then(function() {
+    UBX_CFG_PM2(settings.update, settings.search);
+    return delay(20);
+  }).then(function() {
+    UBX_CFG_RXM();
+    return delay(20);
+  }).then(function() {
+    UBX_CFG_SAVE();
+    return delay(20);
+  }).then(function() {
+    log_debug("Powering GPS Off");
+    /*
+     * must be part of the promise chain to ensure that
+     * setup does not return and powerOff before config functions
+     * have run
+     */
+    return delay(20);
+  });
+}
+
+/** Set GPS power mode (assumes GPS on), returns a promise.
+Either:
+
+require("gpssetup").setPowerMode() // <-- set up GPS to current saved defaults
+require("gpssetup").setPowerMode({power_mode:"PSMOO", update:optional, search:optional}) // <-- PSMOO mode
+require("gpssetup").setPowerMode({power_mode:"SuperE"}) // <-- Super E mode
+
+See the README for more information
+ */
+exports.setPowerMode = function(options) {
+  settings = require("Storage").readJSON(SETTINGS_FILE,1)||{};
+  if (options) {
+    if (options.update) settings.update = options.update;
+    if (options.search) settings.search = options.search;
+    if (options.power_mode) settings.power_mode = options.power_mode;
+  }
+  settings.update = settings.update||120;
+  settings.search = settings.search||5;
+  settings.power_mode = settings.power_mode||"SuperE";
+  if (options) require("Storage").write(SETTINGS_FILE, settings);
+  if (settings.power_mode === "PSMOO") {
+    return setupPSMOO(settings);
+  } else {
+    return setupSuperE();
+  }
+};