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assistedgps 0.02: Update to work with Bangle.js 2

master
Gordon Williams 2022-01-12 12:50:44 +00:00
parent a650e5b4f2
commit 0b742e4ff1
3 changed files with 71 additions and 27 deletions
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7
apps.json
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@ -1536,13 +1536,14 @@
{
"id": "assistedgps",
"name": "Assisted GPS Update (AGPS)",
"version": "0.01",
"description": "Downloads assisted GPS (AGPS) data to Bangle.js 1 for faster GPS startup and more accurate fixes. **No app will be installed**, this just uploads new data to the GPS chip.",
"version": "0.02",
"description": "Downloads assisted GPS (AGPS) data to Bangle.js 1 or 2 for faster GPS startup and more accurate fixes. **No app will be installed**, this just uploads new data to the GPS chip.",
"icon": "app.png",
"type": "RAM",
"tags": "tool,outdoors,agps",
"supports": ["BANGLEJS"],
"supports": ["BANGLEJS","BANGLEJS2"],
"custom": "custom.html",
"customConnect": true,
"storage": []
},
{

1
apps/assistedgps/ChangeLog
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@ -1 +1,2 @@
0.01: New App!
0.02: Update to work with Bangle.js 2

46
apps/assistedgps/custom.html
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@ -8,6 +8,7 @@
<p>GPS can take a long time (~5 minutes) to get an accurate position the first time it is used.
AGPS uploads a few hints to the GPS receiver about satellite positions that allow it
to get a faster, more accurate fix - however they are only valid for a short period of time.</p>
<div id="banglejs1-info" style="display:none">
<p>You can upload data that covers a longer period of time, but the upload will take longer.</p>
<div class="form-group">
<label class="form-label">AGPS Validity time</label>
@ -24,18 +25,30 @@
<input type="radio" name="agpsperiod" value="1wk"><i class="form-icon"></i> 1 week (46kB)
</label>
</div>
<p>Click <button id="upload" class="btn btn-primary">Upload</button></p>
</div>
<div id="banglejs2-info" style="display:none">
</div>
<p id="upload-wrap" style="display:none">Click <button id="upload" class="btn btn-primary">Upload</button></p>
<script src="../../core/lib/customize.js"></script>
<script>
var isB1; // is Bangle.js 1?
var isB2; // is Bangle.js 2?
// When the 'upload' button is clicked...
document.getElementById("upload").addEventListener("click", function() {
var url;
if (isB1) {
var radios = document.getElementsByName('agpsperiod');
var url = "https://www.espruino.com/agps/assistnow_1d.base64";
url = "https://www.espruino.com/agps/assistnow_1d.base64";
for (var i=0; i<radios.length; i++)
if (radios[i].checked)
url = "https://www.espruino.com/agps/assistnow_"+radios[i].value+".base64";
}
if (isB2) {
url = "https://www.espruino.com/agps/casic.base64";
}
console.log("Sending...");
//var text = document.getElementById("agpsperiod").value;
get(url, function(b64) {
@ -48,6 +61,8 @@
});
});
// =================================================== Bangle.js 1 UBLOX
function UBX_CMD(cmd) {
var d = [0xB5,0x62]; // sync chars
d = d.concat(cmd);
@ -79,13 +94,31 @@
return UBX_CMD([].slice.call(a));
}
// =================================================== Bangle.js 2 CASIC
function CASIC_CHECKSUM(cmd) {
var cs = 0;
for (var i=1;i<cmd.length;i++)
cs = cs ^ cmd.charCodeAt(i);
return cmd+"*"+cs.toString(16).toUpperCase().padStart(2, '0');
}
// ===================================================
function jsFromBase64(b64) {
var bin = atob(b64);
var chunkSize = 128;
var js = "\x10Bangle.setGPSPower(1);\n"; // turn GPS on
if (isB1) { // UBLOX
//js += `\x10Bangle.on('GPS-raw',function (d) { if (d.startsWith("\\xB5\\x62\\x05\\x01")) Terminal.println("GPS ACK"); else if (d.startsWith("\\xB5\\x62\\x05\\x00")) Terminal.println("GPS NACK"); })\n`;
//js += "\x10var t=getTime()+1;while(t>getTime());\n"; // wait 1 sec
js += `\x10Serial1.write(atob("${btoa(String.fromCharCode.apply(null,UBX_MGA_INI_TIME_UTC()))}"))\n`; // set GPS time
}
if (isB2) { // CASIC
// Disable BDS, use just GPS (supposedly improve lock time)
js += `\x10Serial1.println("${CASIC_CHECKSUM("$PCAS04,1")}")\n`; // set GPS-only mode
}
for (var i=0;i<bin.length;i+=chunkSize) {
var chunk = bin.substr(i,chunkSize);
@ -106,6 +139,15 @@
oReq.send();
}
// Called when we know what device we're using
function onInit(device) {
isB2 = (device && device.id=="BANGLEJS2");
isB1 = !isB2;
document.getElementById("banglejs1-info").style = isB1?"":"display:none";
document.getElementById("banglejs2-info").style = isB2?"":"display:none";
document.getElementById("upload-wrap").style = "";
}
</script>
</body>
</html>