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Implemented barometer service data

master
jeffyactive 2021-12-14 17:59:36 -05:00
parent 3f5072b874
commit c0ac05488a
1 changed files with 22 additions and 4 deletions
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26
apps/sensible/sensible.js
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@ -120,10 +120,28 @@ function transmitUpdatedSensorData() {
// Encode the bar service data to fit in a Bluetooth PDU
function encodeBarServiceData() {
// TODO: implement negative temperature as signed int
let encodedTemperature = [ Math.round(bar.temperature * 100) & 0xff,
(Math.round(bar.temperature * 100) >> 8) & 0xff ];
return { 0x2a6e: encodedTemperature };
let tEncoded = Math.round(bar.temperature * 100);
let pEncoded = Math.round(bar.pressure * 100);
let eEncoded = Math.round(bar.altitude * 100);
if(bar.temperature < 0) {
tEncoded += 0x10000;
}
if(bar.altitude < 0) {
eEncoded += 0x1000000;
}
let t = [ tEncoded & 0xff, (tEncoded >> 8) & 0xff ];
let p = [ pEncoded & 0xff, (pEncoded >> 8) & 0xff, (pEncoded >> 16) & 0xff,
(pEncoded >> 24) & 0xff ];
let e = [ eEncoded & 0xff, (eEncoded >> 8) & 0xff, (eEncoded >> 16) & 0xff ];
return [
0x02, 0x01, 0x06, // Flags
0x05, 0x16, 0x6e, 0x2a, t[0], t[1], // Temperature
0x07, 0x16, 0x6d, 0x2a, p[0], p[1], p[2], p[3], // Pressure
0x06, 0x16, 0x6c, 0x2a, e[0], e[1], e[2] // Elevation
];
}