Category:GPS

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PC Debug tool

GPS data receiver from computer

Output Data

  • GGA: time, location, positioning type
  • GLL: UTC time, longitude, latitude
  • GSA: GPS receiver operating mode, positioning the use of satellites, DOP value
  • GSV: Visible GPS satellite information, elevation, azimuth, SNR RMC: time, date, position, speed
$GPGSV,1,1,01,06,,,20*7C  //GPS Satellites in view
$GPGLL,,,,,,V,N*64  // Geographic position, latitude / longitude
$GPRMC,,V,,,,,,,,,,N*53  //Recommended Minimum Specific GPS/TRANSIT Data
$GPVTG,,,,,,,,,N*30 //Track Made Good and Ground Speed.
$GPGGA,,,,,,0,00,99.99,,,,,,*48   // Global Positioning System Fix Data
$GPGSA,A,1,,,,,,,,,,,,,99.99,99.99,99.99*30 //GPS DOP and active satellites

NEMA 0183 Protocol

Get relevant File:NMEA0183-GPS-protocol.pdf.

SIM808 Setup

On the normal USB-TTL GSM mode, you can run the following commands to enter into the GPS mode:

  • AT+CGNSPWR=1
  • AT+CGNSTST=1

NO need to restart the module, now you can direct see on the serial monitor, we use coolterm here:

Serial of GPS data flow.png

  • Now turn of serial monitor and open NEMA monitor too, now you can the data are mapping like below:
  • Remember to setup the port and baudrate

Nema GPS data monitor.png

Solution

Type Features Header text
A7 Example Example
NEO-6M Example Example
MT3339
  1. MT3339 only need nine passive external components, while MT3333 and MT3337 with MediaTek's pin-compatible
  2. Tracking sensitivity: -165dBm
  3. Very low continuous tracking power consumption: 3mA
  4. Support GPS, QZSS and SBAS
  5. With MediaTek's AlwaysLocate ™ technology, it reduces power consumption
  6. The MT3339's built-in LNA achieves a total receiver chain NF of 2.2 dB, eliminating the need for external LNA components.
SIM808 Example Example
SIM28 SIM28ML Example Example

Pages in category "GPS"

The following 3 pages are in this category, out of 3 total.