Hello,
I have Model: EM7455B Revision: SWI9X30C_02.20.03.22 r6827 CARMD-EV-FRMWR2 2016/10/11 16:03:14 and the Skylight app will provide me with GPS so I know it works. But how does one programmatically get the gps coordinates via commandline or powershell? All of my attempts seem to time out. Heres some of the stuff I have tried:
#$port=new-object system.io.ports.serialport com3,9600,None,8,One
#$port= new-Object System.IO.Ports.SerialPort COM3,9600,None,8,one
#$Rport= new-Object System.IO.Ports.SerialPort com3,9600,None,8,one#Register-ObjectEvent -InputObject $Rport -EventName “DataReceived” -SourceIdentifier $Name > $null
Any help would be appreciated, the goal is to log GPS coordinates during windows login via startup, login or scheduled task scripts.
jyijyi
July 14, 2021, 1:10am
2
you need to use AT command like AT!GPSFIX and AT!GPSLOC to get the location.
Unfortunately, I already tried that and it did not work:
Anyone have some example PowerShell or command line that works?
jyijyi
July 14, 2021, 1:41am
4
is COM3 the AT command port?
It is the NMEA port. Am I supposed to be using some other com port? One dedicated to AT commands?
jyijyi
July 14, 2021, 2:05am
6
yes, you need to use modem port for AT command instead of NMEA port.
Getting somewhere! Thanks
@jyijyi !
havealoha:
EM7455B
I found this post that might help. MC7455 GPS not functioning - #5 by zainol69 r") start-sleep -m 50 $port.ReadExisting() start-sleep -m 50 $port.WriteLine("AT!GPSLOC" + "r”)r") start-sleep -m 50 $port.ReadExisting() start-sleep -m 50 $port.WriteLine("at!gpstrack=?" + "r”)r") start-sleep -m 50 $port.ReadExisting() start-sleep -m 50 $port.WriteLine("at!custom?" + "r”)"A710"” + “r") start-sleep -m 50 $port.WriteLine("AT!CUSTOM=“GPSENABLE",1" + "r”)"GPSLPM”,0” + “r") start-sleep -m 50 $port.WriteLine("AT!RESET" + "r”)r") start-sleep -m 50 $port.ReadExisting() start-sleep -m 50 $port.WriteLine("AT!GPSLOC" + "r”)
Output:
OK
AT!GPSLOC
AT!GPSFIX
at!gpstrack=?
OK
at!gpstrack=1,255,1000,30,1
at!custom?
OK
at!entercnd=“A710”
1980 01 06 6 00:00:55 Last Fix Status = NONE
No TTFF available
OK
AT!GPSLOC
AT!GPSFIX
Im getting closer but still not getting coordinates. Any advice?
PS C:\Users\me> $port=new-object system.io.ports.serialport com6,9600,None,8,One
$port.Open()
start-sleep -m 50
$port.WriteLine("AT!GPSFIX=1,255,1" + "`r")
start-sleep -m 50
$port.ReadExisting()
start-sleep -m 50
$port.WriteLine("AT!GPSSATINFO?" + "`r")
start-sleep -m 50
$port.ReadExisting()
start-sleep -m 50
$port.WriteLine("AT!GPSLOC" + "`r")
start-sleep -m 50
$port.ReadExisting()
start-sleep -m 50
$port.WriteLine("AT!GPSFIX" + "`r")
start-sleep -m 50
$port.ReadExisting()
$port.Close()
OK
Satellites in view: 4 (2021 07 14 2 18:11:19)
* SV: 2 ELEV: 48 AZI: 53 SNR: 36
* SV: 12 ELEV: 54 AZI: 161 SNR: 32
* SV: 20 ELEV: 48 AZI: 108 SNR: 34
* SV: 29 ELEV: 45 AZI: 291 SNR: 29
OK
ERROR
ERROR
PS C:\Users\me>
havealoha:
ill not getting co
I think I finally got it!
PS C:\Users\me> $port=new-object system.io.ports.serialport com6,9600,None,8,One
$port.Open()
start-sleep -m 50
$port.WriteLine("AT!GPSFIX=1,255,1" + "`r")
start-sleep -m 50
$port.ReadExisting()
start-sleep -m 50
$port.WriteLine("AT!GPSSATINFO?" + "`r")
start-sleep -m 50
$port.ReadExisting()
start-sleep -m 50
$port.WriteLine("AT!GPSSTATUS?" + "`r")
start-sleep -m 50
$port.ReadExisting()
start-sleep -m 50
$port.WriteLine("AT!GPSLOC?" + "`r")
start-sleep -m 50
$port.ReadExisting()
$port.Close()
OK
Satellites in view: 5 (2021 07 14 2 18:22:55)
* SV: 2 ELEV: 43 AZI: 54 SNR: 22
* SV: 12 ELEV: 48 AZI: 161 SNR: 24
* SV: 20 ELEV: 50 AZI: 99 SNR: 32
* SV: 25 ELEV: 69 AZI: 232 SNR: 30
* SV: 29 ELEV: 49 AZI: 295 SNR: 18
OK
Current time: 2021 07 14 2 18:23:21
2021 07 14 2 18:22:55 Last Fix Status = SUCCESS
2021 07 14 2 18:23:21 Fix Session Status = ACTIVE
TTFF (sec) = 109
OK
Lat: obfuscated
Lon: obfuscated
Time: 2021 07 14 2 18:23:12 (GPS)
LocUncAngle: 0.0 deg LocUncA: 48 m LocUncP: 21 m HEPE: 52.392 m
2D Fix
Altitude: 45 m LocUncVe: 192.0 m
Heading: 0.0 deg VelHoriz: 0.0 m/s VelVert: 0 m/s
OK
PS C:\Users\me>
