FOSS
/
BangleApps
mirror of https://github.com/espruino/BangleApps
1
0
Fork 1
Code Issues Packages Projects Releases Wiki Activity

more GPS functionality added

pull/561/head
Gordon Williams 2020-09-18 11:51:17 +01:00
parent b1fe7201c8
commit d0088522b8
1 changed files with 65 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

77
testing/GPS-comms.js
View File

@ -1,22 +1,13 @@
/* This code allows you to communicate with the GPS
receiver in Bangle.js in order to set it up.
Protocol spec:
https://cdn.sparkfun.com/assets/0/b/0/f/7/u-blox8-M8_ReceiverDescrProtSpec__UBX-13003221__Public.pdf
*/
Bangle.setGPSPower(1) Bangle.setGPSPower(1)
//Bangle.on('GPS',print); //Bangle.on('GPS',print);
Bangle.on('GPS-raw',function (d) { /*Bangle.on('GPS-raw',function (d) {
if (d[0]=="$") return; if (d[0]=="$") return;
if (d.startsWith("\xB5\x62\x05\x01")) print("GPS ACK"); if (d.startsWith("\xB5\x62\x05\x01")) print("GPS ACK");
else if (d.startsWith("\xB5\x62\x05\x00")) print("GPS NACK"); else if (d.startsWith("\xB5\x62\x05\x00")) print("GPS NACK");
// 181,98 sync chars // 181,98 sync chars
else print("GPS",E.toUint8Array(d).join(",")); else print("GPS",E.toUint8Array(d).join(","));
}); });*/
function writeGPScmd(cmd) { function writeGPScmd(cmd) {
var d = [0xB5,0x62]; // sync chars var d = [0xB5,0x62]; // sync chars
d = d.concat(cmd); d = d.concat(cmd);
@ -28,6 +19,23 @@ function writeGPScmd(cmd) {
d.push(a,b); d.push(a,b);
Serial1.write(d); Serial1.write(d);
} }
function readGPScmd(cmd, callback) {
var prefix = String.fromCharCode(0xb5,0x62,cmd[0],cmd[1]);
function handler(d) {
if (!d.startsWith(prefix)) return;
clearInterval(timeout);
var a = E.toUint8Array(d);
// cut off id + length
a = new Uint8Array(a.buffer,6, a.length-8);
callback(a);
}
Bangle.on('GPS-raw',handler);
var timeout = setTimeout(function() {
callback();
Bangle.removeListener('GPS-raw',handler);
}, 2000);
writeGPScmd(cmd);
}
function UBX_CFG_PMS() { function UBX_CFG_PMS() {
// UBX-CFG-PMS - enable power management - Super-E // UBX-CFG-PMS - enable power management - Super-E
writeGPScmd([0x06,0x86, // msg class + type writeGPScmd([0x06,0x86, // msg class + type
@ -64,4 +72,49 @@ function UBX_CFG_MSG(msg,enable) {
// Enter super-e low power // Enter super-e low power
// UBX_CFG_PMS() // UBX_CFG_PMS()
// Disable DTM messages (see UBX_CFG_MSG comments): // Disable DTM messages (see UBX_CFG_MSG comments):
UBX_CFG_MSG("DTM",false); //UBX_CFG_MSG("DTM",false);
// UBX-CFG-HNR (0x06 0x5C) - high rate (up to 30hz)
// GPS 181,98,6,62,60,0,0,32,32,7,0,8,16,0,1,0,1,1,1,1,3,0,0,0,1,1,2,4,8,0,0,0,1,1,3,8,16,0,1,0,1,1,4,0,8,0,0,0,1,3,5,0,3,0,1,0,1,5,6,8,14,0,0,0,1,1,84,27
//GPS ACK
function getUBX_CFG_GNSS() {
//
readGPScmd([0x06,0x3E,0,0], function(a) {
print("CFG_GNSS",a.join(","), a.length);
var info = {
numTrkChHw : a[1],
numTrkChUse : a[2],
configs : []
};
for (var i=4;i<a.length;i+=8) {
info.configs.push({
gnss : ["GPS","SBAS","Galileo","BeiDou","IMES","QZSS","GLONASS"][a[i+0]],
reservedCh : a[1+1],
maxCh : a[i+2],
enabled : a[i+4]&1,
sigCfgMask : a[i+6],
flags : [a[i+4],a[i+5],a[i+6],a[i+7]]
});
}
print(info);
});
}
function getUBX_CFG_NMEA() {
readGPScmd([0x06,0x17,0,0], function(a) {
print("CFG_NMEA",a.join(","), a.length);
var info = {
filter : a[0],
nmeaVersion : {0x4b:4.11,0x41:4.1,0x40:4,0x23:2.3,0x21:2.1}[a[1]],
flags : a[3]
};
print(info);
});
}
getUBX_CFG_NMEA();
// UBX-MGA-INI-TIME_UTC looks promising for a start time