So I was just curious.. Im using tomtom and I havent used any speed other than 4800 for the internal gps.
Is our gps capable of operating at a higher rate than this? If so.. what are the effects? Faster movement, higher accuracy..?
Thanks!
I changed my baud rate to 19200 and so far it might be me but i do get a much quicker fix
No kidding.. thanks for the info.
Can anyone else confirm this??
^ bump bump ^
When I try to change the baud rate on my pro, it always reverts to 4800 (or whatever it is)....
i dont see any deffrent when changing the baud rate
When i put it on 4800 baut it generates less heat at the back of mij diamond compared to the 57600 baut mode.
4800 Baud is sufficient for the GPS chip to exchange all the necessary information, it doesn't bottleneck route software calculations and doesn't hurt initial satellite acquisition time.
i changed to 19200 and can say that i havent noticed any difference.
if a higher baud uses more processing resources and doesnt yeild any gains then im going back to 4800.
thanks for all the response!
cheers.
GPS Baud Rate
I have just purchased a Holux-M1000B Bluetooth GPS mouse and it says in the instuction manual to set the Baud rate to 38400 for what it's worth..
looby said:
I have just purchased a Holux-M1000B Bluetooth GPS mouse and it says in the instuction manual to set the Baud rate to 38400 for what it's worth..
Click to expand...
Click to collapse
Thanks.
I figure an external receiver would be fine running at a higher baud. You should try it at a lower rate and see how it performs, and if you can save battery life.
The internal windows driver which exposes the GPS functionality is baud rate agnostic - you can choose anything as it's just emulating the physical interface to the GPS (allowing mutliple things to connect to one physical receiver).
Typical NMEA baud rate is 4800 as this is fast enough for the data - you only get something like 200-300 characters out of a busy GPS giving individual satellite info per second so there's no benefit in using a higher baud rate. If you use something very fast, it may mean that the processor is ramped up to a higher speed to cope with the fast influx of data every second and the hysterisis on the power management might cause more power to be used/more heat.
I'd stick with 4800baud - there's really no need to go faster
Rich
Related
Hi All,
I have bought a Fortuna U2 (PS2 connector) and matching cable to go into a O2 XDA (Wallaby). Nice little unit at a great price.
When I connect the two units up and check to see what messages I'm getting from the GPS, it is all random characters. I have tried reading both NMEA and SiRF settings - but still random characters.
I have later found out that this unit can do both NMEA and SiRF messages but it defaults at SiRF messages and I need NMEA to run my Navman software.
I have tried about 2467242 different programs on the PDA to try and get it to read the SiRF messages and then set the unit to run as NMEA GPS. Simply not working.
I have turned the IR port off and don't have an external keyboard. Is there something I'm missing ?
When I use a terminal software tool, I'm getting something through on COMM port 1, but it's absolute gibberish. I'm stumped.
Can anyone please tell me how to get the GPS unit to output NMEA messages by sending a command from the PDA to the GPS unit.
Cheers
Sonny
macsonny said:
Hi All,
I have bought a Fortuna U2 (PS2 connector) and matching cable to go into a O2 XDA (Wallaby). Nice little unit at a great price.
When I connect the two units up and check to see what messages I'm getting from the GPS, it is all random characters. I have tried reading both NMEA and SiRF settings - but still random characters.
I have later found out that this unit can do both NMEA and SiRF messages but it defaults at SiRF messages and I need NMEA to run my Navman software.
I have tried about 2467242 different programs on the PDA to try and get it to read the SiRF messages and then set the unit to run as NMEA GPS. Simply not working.
I have turned the IR port off and don't have an external keyboard. Is there something I'm missing ?
When I use a terminal software tool, I'm getting something through on COMM port 1, but it's absolute gibberish. I'm stumped.
Can anyone please tell me how to get the GPS unit to output NMEA messages by sending a command from the PDA to the GPS unit.
Cheers
Sonny
Click to expand...
Click to collapse
When using Tom TOm Navigator you'll have a GPS Terminal that allows you to change your baud rate. Try that. Use several baud rates on the com port. One of them should work. I think I use 9600 but I'm not sure.
regards
Ended up being a faulty cable. All fixed now.
Hello,
Where can i find the GPS on my Tilt ? in whice port ? rate ? type ?
thnx
beonfocus said:
Hello,
Where can i find the GPS on my Tilt ? in whice port ? rate ? type ?
thnx
Click to expand...
Click to collapse
COM 4, Baud 19200.
Works great for Google Maps, TOPO! and Pocket Streets.
baud 4800
com 4
tyeo098 said:
baud 4800
com 4
Click to expand...
Click to collapse
what program? I ask because I did some testing on different programs, and while the Hermes BT baud is 9600, the internal Kaiser was faster at 19200. It may run at the lower speed, but why not use it?
mattk_r said:
what program? I ask because I did some testing on different programs, and while the Hermes BT baud is 9600, the internal Kaiser was faster at 19200. It may run at the lower speed, but why not use it?
Click to expand...
Click to collapse
OCN6 uses Com 4800 baud... On the Tilt.
My UK Tytn 2 also uses the GPS on com port 4 baud 4800, will not work with any other setting.
All my GPS programs use it, Tomtom Nav 6, Google Maps, GPS Test and GPS Tuner.
Radeon123 said:
My UK Tytn 2 also uses the GPS on com port 4 baud 4800, will not work with any other setting.
All my GPS programs use it, Tomtom Nav 6, Google Maps, GPS Test and GPS Tuner.
Click to expand...
Click to collapse
Hmmm... ok. Can't argue, but I wonder how I got it to work - and at the time I set it up it made since because being internal it should handle a faster serial baud rate than via the BT.
Anyhow, I'll try it at 4800 and see if it works there as well.
I use a Baud rate of 9600 with TOMTOM 6.032
Perhaps the Baud rate can change depending on your area (i.e which satellites you're pointing at)?
If you are using TT 6.032, then it automatically detects that you have a built-in GPS, so ignores the COM & Baud rate settings
Turn it on ?
Do i need to turn the GPS on ?
If yes how ?
Hello,
sorry for my bad english...
I would like to read since my software sentence NMEA GPS of my P3600/TYTNII.
I open port COM9 rate : 9600.
But no sentences received of the GPS !!! (buffer=null)
If I test my application with other devices it is ok !!!
I think that it is necessary to send a sentence to activate the sentences NMEA of GPS (chip QUALCOMM 7200)
Have an idea? thanks
stef
COM4 ..........
lcohen999 said:
COM4 ..........
Click to expand...
Click to collapse
The com4 is for GPS Intermediate Driver under P3600.
The physical port is the COM9 pour a use dialogs port serial GPS.
This works on my Tilt, Com 4, 4800 baud. I believe 4800 is standard for NMEA. I'm using PUTTY for a terminal emulator. I don't send anything. I just launch PUTTY and start reading the NMEA sentences. Make sure you have a clear view of the sky - mine will not give position info if I'm in a building or otherwise blocked.
mine is COM 4 baud 52600 (judging by how iGo connects)
Thank you has all for your answers.
Ok for P3600 one uses com4 and 4800 rate.
There remain to me 2 devices HTC to be solved...
P3300 (artemis) and P3650 (polaris), P4550 (Kaiser)
It is necessary that I create post again for each devices ?
next post
http://forum.xda-developers.com/showthread.php?p=1891585#post1891585
Is there any improvements if I change a baud rate from 4800 to bigger value? I use RunGPS and TomTom6 with Diamond.
i wondered about this too, everything works fine at 4800 but does increasing it speeds up GPS data or no difference?
i think it's a software leftover from back when gps's was connected using serial cables and possibly virtual serial ports over bluetooth
The External GPS setting is for external GPS setting in case you don't want to use the internal GPS. whatever setting you change, it doesn't effect the internal GPS.
McGuider (Sygic DRIVE) autodetects the internal GPS on COM4, 19200 baud. Manually setting this in TomTom 7 also seems to work for me.
j0bro said:
McGuider (Sygic DRIVE) autodetects the internal GPS on COM4, 19200 baud. Manually setting this in TomTom 7 also seems to work for me.
Click to expand...
Click to collapse
did you see any improvement between 4800 and 19200 ?
j0bro said:
McGuider (Sygic DRIVE) autodetects the internal GPS on COM4, 19200 baud. Manually setting this in TomTom 7 also seems to work for me.
Click to expand...
Click to collapse
did you see any improvement between 4800 and 19200 ?
hi guys,
please kindly share your experience.
i would like to find out as well.
although i am not using tom tom but on beeline gps detection, it detect my gps as com4 and baud rate as 9600
Hi,
I've a S730. I'd like to use an external GPS.
The GPS is a Holux GPSlìm. This Morning I try to use it with My S730 and it work
(I used GPSTest 1.4). But with TomTom don't work because my version need port Com2 or Com3 only.
So I've used an external tool to setup gps setting to set Program Port, Hardware Port, Hardware Port Baud Rate.
But now it no longer works even with GPSTEst.
I try to set
Program Port <-COM2
Hardware Port<- COM4
HardwarePortBaudRade<-4800
with Manage Automaticaly setted...
but it not work.
Whar are the correct settings ?
Thanks in andvance and forgive me for my bad english!