Hi I'm using a Leadtek LR9552 GPS module connected to a pic microcontroler and an LCD. I am Parsing the GPRMC, GPVTG and GPGGA NMEA sentences for the specific parameters I am intrestec in.
I have noticed that the lat long position (to name just 2 parameters) do not update unless the module is moved at a speed greater than 3kmh approx.
There must be some parameter that latches the data in this way. I am looking for a way to allow the output data to be constantly updated. Otherwise if I walk slowly then I could walk 10 miles and the position that is displayed will still be the position of where I started. If I now jog about the position will update.
I have looked through the input sentences $PSRF format commands and have tried turning off all the NMEA output then secting the pole for the data I need and it's still latched unless I move quickly.
Anyone have any ideas.
Regards Chris
I have noticed that the lat long position (to name just 2 parameters) do not update unless the module is moved at a speed greater than 3kmh approx.
There must be some parameter that latches the data in this way. I am looking for a way to allow the output data to be constantly updated. Otherwise if I walk slowly then I could walk 10 miles and the position that is displayed will still be the position of where I started. If I now jog about the position will update.
I have looked through the input sentences $PSRF format commands and have tried turning off all the NMEA output then secting the pole for the data I need and it's still latched unless I move quickly.
Anyone have any ideas.
Regards Chris