gpstofile 0.0.5

Quick and easy way to read GPS sentences to file with no gpsd required.

GPSToFile

Quick and easy way to read GPS sentences to file with no gpsd required.

pip install gpstofile

Configuration

Here are the available configuration options:

Key	Type	Description
path	str	Path to serial port
baudrate	int	Serial port baud rate (Default: 115200)
readrate	int	Read interval to listen for GPS sentences on serial bus (Default: .4s)
debug	bool	Print verbose log statements for debugging purposes (Default: False)
append	bool	Append to file instead of overwriting file contents on each new message received (Default: False)

Getting Started

Once you get the serial path of your GPS modem, you can get started either via command line, or by importing the module:

python -m gpstofile --port /dev/tty.usbmodem14401 --debug True

or:

from gpstofile import GPSToFile

gps = GPSToFile('/dev/tty.usbmodem14401', readrate=1, debug=True)

gps.loop()

Once the loop begins running, GPS sentences will be written to files. You should see the files be created/continuously written to at readrate based on the codes in the following table:

The filename will be the NMEA sentence, for example GPGLL and the file contents will be the set of data sent after that sentence.

GPS Sentences or NMEA Sentences

NMEA Sentence	Meaning
GPGGA	Global positioning system fix data (time, position, fix type data)
GPGLL	Geographic position, latitude, longitude
GPVTG	Course and speed information relative to the ground
GPRMC	Time, date, position, course and speed data
GPGSA	GPS receiver operating mode, satellites used in the position solution, and DOP values.
GPGSV	The number of GPS satellites in view satellite ID numbers, elevation, azimuth and SNR values.
GPMSS	Signal to noise ratio, signal strength, frequency, and bit rate from a radio beacon receiver.
GPTRF	Transit fix data
GPSTN	Multiple data ID
GPXTE	cross track error, measured
GPZDA	Date and time (PPS timing message, synchronized to PPS).

For more info, check out this resource from RF Wireless World.