From 864ef1b2bce558e6349d155287a7659cd6aad666 Mon Sep 17 00:00:00 2001
From: Erik Andresen <erik@vontaene.de>
Date: Mon, 27 Feb 2023 21:11:15 +0100
Subject: [PATCH] magnav: replace var with let/const

---
 apps/magnav/lib.js | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/apps/magnav/lib.js b/apps/magnav/lib.js
index fe58615cb..443fc91ac 100644
--- a/apps/magnav/lib.js
+++ b/apps/magnav/lib.js
@@ -1,8 +1,8 @@
 exports.calibrate = () => {
-  var max={x:-32000, y:-32000, z:-32000},
+  const max={x:-32000, y:-32000, z:-32000},
       min={x:32000, y:32000, z:32000};
-  var ref = setInterval(()=>{
-      var m = Bangle.getCompass();
+  const ref = setInterval(()=>{
+      const m = Bangle.getCompass();
       max.x = m.x>max.x?m.x:max.x;
       max.y = m.y>max.y?m.y:max.y;
       max.z = m.z>max.z?m.z:max.z;
@@ -13,10 +13,10 @@ exports.calibrate = () => {
   return new Promise((resolve) => {
      setTimeout(()=>{
        if(ref) clearInterval(ref);
-       var offset = {x:(max.x+min.x)/2,y:(max.y+min.y)/2,z:(max.z+min.z)/2};
-       var delta  = {x:(max.x-min.x)/2,y:(max.y-min.y)/2,z:(max.z-min.z)/2};
-       var avg = (delta.x+delta.y+delta.z)/3;
-       var scale = {x:avg/delta.x, y:avg/delta.y, z:avg/delta.z};
+       const offset = {x:(max.x+min.x)/2,y:(max.y+min.y)/2,z:(max.z+min.z)/2};
+       const delta  = {x:(max.x-min.x)/2,y:(max.y-min.y)/2,z:(max.z-min.z)/2};
+       const avg = (delta.x+delta.y+delta.z)/3;
+       const scale = {x:avg/delta.x, y:avg/delta.y, z:avg/delta.z};
        resolve({offset:offset,scale:scale});
      },20000);
   });
@@ -27,22 +27,22 @@ exports.tiltfix = (m,g,O,S) => {
   if (O & S) {
     m.dx =(m.x-O.x)*S.x; m.dy=(m.y-O.y)*S.y; m.dz=(m.z-O.z)*S.z;
   }
-  var d = Math.atan2(-m.dx,m.dy)*180/Math.PI;
+  let d = Math.atan2(-m.dx,m.dy)*180/Math.PI;
   if (d<0) d+=360;
-  var phi = Math.atan(-g.x/-g.z);
-  var cosphi = Math.cos(phi), sinphi = Math.sin(phi);
-  var theta = Math.atan(-g.y/(-g.x*sinphi-g.z*cosphi));
-  var costheta = Math.cos(theta), sintheta = Math.sin(theta);
-  var xh = m.dy*costheta + m.dx*sinphi*sintheta + m.dz*cosphi*sintheta;
-  var yh = m.dz*sinphi - m.dx*cosphi;
-  var psi = Math.atan2(yh,xh)*180/Math.PI;
+  const phi = Math.atan(-g.x/-g.z);
+  const cosphi = Math.cos(phi), sinphi = Math.sin(phi);
+  const theta = Math.atan(-g.y/(-g.x*sinphi-g.z*cosphi));
+  const costheta = Math.cos(theta), sintheta = Math.sin(theta);
+  const xh = m.dy*costheta + m.dx*sinphi*sintheta + m.dz*cosphi*sintheta;
+  const yh = m.dz*sinphi - m.dx*cosphi;
+  let psi = Math.atan2(yh,xh)*180/Math.PI;
   if (psi<0) psi+=360;
   return psi;
 }
 
 exports.tiltfixread = (O,S) => {
   "ram"
-  var m = Bangle.getCompass({noTiltComp: true});
-  var g = Bangle.getAccel();
-  return exports.tiltfix(m,g,O,S);
+  const mag = Bangle.getCompass({noTiltComp: true});
+  const acc = Bangle.getAccel();
+  return exports.tiltfix(mag,acc,O,S);
 }