mirror of https://github.com/espruino/BangleApps
67 lines
2.1 KiB
JavaScript
67 lines
2.1 KiB
JavaScript
/* This code allows you to communicate with the GPS
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receiver in Bangle.js in order to set it up.
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Protocol spec:
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https://cdn.sparkfun.com/assets/0/b/0/f/7/u-blox8-M8_ReceiverDescrProtSpec__UBX-13003221__Public.pdf
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*/
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Bangle.setGPSPower(1)
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//Bangle.on('GPS',print);
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Bangle.on('GPS-raw',function (d) {
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if (d[0]=="$") return;
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if (d.startsWith("\xB5\x62\x05\x01")) print("GPS ACK");
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else if (d.startsWith("\xB5\x62\x05\x00")) print("GPS NACK");
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// 181,98 sync chars
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else print("GPS",E.toUint8Array(d).join(","));
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});
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function writeGPScmd(cmd) {
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var d = [0xB5,0x62]; // sync chars
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d = d.concat(cmd);
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var a=0,b=0;
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for (var i=2;i<d.length;i++) {
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a += d[i];
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b += a;
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}
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d.push(a,b);
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Serial1.write(d);
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}
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function UBX_CFG_PMS() {
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// UBX-CFG-PMS - enable power management - Super-E
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writeGPScmd([0x06,0x86, // msg class + type
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8,0,//length
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0x00,0x03/*1hz*/, 0,0, 0,0, 0,0]);
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}
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function UBX_CFG_MSG(msg,enable) {
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// UBX-CFG-MSG,
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var types = {
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DTM:0x0A, // Datum Reference
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GBQ:0x44, // Poll a standard message (if the current Talker ID is GB)
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GBS:0x09, // GNSS Satellite Fault Detection
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GGA:0x00, // Global positioning system fix data
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GLL:0x01, // Latitude and longitude, with time of position fix and status
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GLQ:0x43, // Poll a standard message (if the current Talker ID is GL)
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GNQ:0x42, // Poll a standard message (if the current Talker ID is GN)
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GNS:0x0D, // GNSS fix data
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GPQ:0x40, // Poll a standard message (if the current Talker ID is GP)
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GRS:0x06, // GNSS Range Residuals
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GSA:0x02, // GNSS DOP and Active Satellites
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GST:0x07, // GNSS Pseudo Range Error Statistics
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GSV:0x03, // GNSS Satellites in View
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RMC:0x04, // Recommended Minimum data
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TXT:0x41, // Text Transmission
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VLW:0x0F, // Dual ground/water distance
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VTG:0x05, // Course over ground and Ground speed
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ZDA:0x08, // Time and Date
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};
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writeGPScmd([0x06,0x01, // msg class + type
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3,0,//length
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0xF0,types[msg],enable?1:0]);
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}
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// Enter super-e low power
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// UBX_CFG_PMS()
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// Disable DTM messages (see UBX_CFG_MSG comments):
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UBX_CFG_MSG("DTM",false); |