From 16a25f245a0af695b42268af419346b1e1d18897 Mon Sep 17 00:00:00 2001
From: Gordon Williams <gw@pur3.co.uk>
Date: Mon, 4 Aug 2025 15:16:01 +0100
Subject: [PATCH] recorder 0.48: Add ability to log average acceleration values

---
 apps/recorder/ChangeLog     |  3 ++-
 apps/recorder/README.md     |  1 +
 apps/recorder/lib.js        | 22 ++++++++++++++++++++++
 apps/recorder/metadata.json |  2 +-
 4 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/apps/recorder/ChangeLog b/apps/recorder/ChangeLog
index f5c0803bb..8042370f9 100644
--- a/apps/recorder/ChangeLog
+++ b/apps/recorder/ChangeLog
@@ -60,4 +60,5 @@
       Lower accuracy of barometer data to ~1cm (saves about 15b/record)
 0.47: Fix 'blip' on speed map on some recordings
       Ensure Battery voltage is only stored to 0.01v
-      Add graphs for Steps+Battery
\ No newline at end of file
+      Add graphs for Steps+Battery
+0.48: Add ability to log average acceleration values
\ No newline at end of file
diff --git a/apps/recorder/README.md b/apps/recorder/README.md
index f24d6d5fb..52e598d93 100644
--- a/apps/recorder/README.md
+++ b/apps/recorder/README.md
@@ -19,6 +19,7 @@ You can record
 * **BAT** Battery percentage and voltage
 * **Steps** Steps counted by the step counter
 * **Baro** (Bangle.js 2) Using the built-in barometer to record Temperature, Pressure and Altitude
+* **Accel**  Average acceleration values in X,Y and Z
 * **Core** CoreTemp body temperature *if* you have a CoreTemp device and the https://banglejs.com/apps/?id=coretemp app installed
 
 You can then start/stop recording from the Recorder app itself (and as long as widgets are
diff --git a/apps/recorder/lib.js b/apps/recorder/lib.js
index b0f05ead4..6d17c3942 100644
--- a/apps/recorder/lib.js
+++ b/apps/recorder/lib.js
@@ -114,6 +114,28 @@ exports.getRecorders = function() {
         stop : () => {},
         draw : (x,y) => g.reset().drawImage(atob("DAwBAAMMeeeeeeeecOMMAAMMMMAA"),x,y)
       };
+    },
+    accel:function() {
+      var ax=0,ay=0,az=0,n=0;
+      function onAccel(a) {
+        ax += a.x;
+        ay += a.y;
+        az += a.z;
+        n++;
+      }
+      return {
+        name : "Accel",
+        fields : ["Accel X", "Accel Y", "Accel Z"],
+        getValues : () => {
+          if (n<1) n=1;
+          var r = [(ax/n).toFixed(2), (ay/n).toFixed(2), (az/n).toFixed(2)];
+          n = ax = ay = az = 0;
+          return r;
+        },
+        start : () => { Bangle.on('accel', onAccel); },
+        stop : () => { Bangle.removeListener('accel', onAccel); },
+        draw : (x,y) => g.reset().drawImage(atob("DAwBAAMMeeeeeeeecOMMAAMMMMAA"),x,y)
+      };
     }
   };
   if (Bangle.getPressure){
diff --git a/apps/recorder/metadata.json b/apps/recorder/metadata.json
index 2d7e54bdd..7d8251a6c 100644
--- a/apps/recorder/metadata.json
+++ b/apps/recorder/metadata.json
@@ -2,7 +2,7 @@
   "id": "recorder",
   "name": "Recorder",
   "shortName": "Recorder",
-  "version": "0.47",
+  "version": "0.48",
   "description": "Record GPS position, heart rate and more in the background, then download to your PC.",
   "icon": "app.png",
   "tags": "tool,outdoors,gps,widget,clkinfo",