Waveshare UART GPS NEO-6M Manual de usuario

UART GPS NEO-6M User Manual Waveshare

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UART GPS NEO-6M User Manual

Features

U-BLOXNEO-6M module with high-gain active antenna;

TTL level, compatible with 3V/5V systems;

Baud rate: 9600kbps (default), adjustable by u-center;

Provided IPXinterface for different active antennas;

Provided rechargeable battery backup, enabling to save ephemeris data on power

down;

Support hot start.

Parameters

Receiver type:

50 channels, GPS L1(1575.42Mhz) C/A code,

SBAS:WAAS/EGNOS/MSAS

Horizontal position accuracy:

2.5mCEP (SBAS:2.0mCEP)

Navigation update rate:

5Hz maximum (1HZ default)

Capture time:

Cool start: 27s (fastest)；Hot start: 1s

Tracking & Navigation sensitivity:

-161dBm

Communication protocol:

NMEA(default)/UBX Binary

Serial baud rate:

4800, 9600(default), 19200, 38400, 57600, 115200, 230400

Operating temperature:

-40℃~ 85℃

Operating voltage:

2.7V~5.0V(power supply input via VCC)

Operating current:

45mA

TXD/RXD impedance:

510Ohms

Applications

This module can be applied to navigator, aircraft positioning, etc.

Hardware

1. Acomputer with Windows XP/Win7/Win8 OS;

2. An USB to TTL serial module, such as FT232, PL2303, CP2102, etc. If there is a

native serial port in the computer, a DB9 to TTL serial module may be used;

3. AUART GPS NEO-6M module.

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How to use

1. Connect the UART GPS NEO-6M module to a serial module. FT232 is applied as

the serial module in this document.

The connection between the GPS module and the serial module is listed as the

table below.

UART GPS NEO-6M module pins

Serial module pins

VCC

3.3V/5V

GND

TXD

RXD

PSS*

* PPS should be connected to the clock pulse output (CPOUT) of a MCU. However, this pin is

unconnected, in the case that the GPS module is connected to a computer.

2. Connect the serial module to the computer.

3. Start the serial debugging assistant, and set the serial port as below:

Select the corresponding serial port in the PortNo option. In this example,

COM8 is selected.

Baud rate: 9600(default).

8 data bits, 1 stop bit, no parity and no flow control.

4. After finishing the settings, you can see the serial debugging assistant will show

many data in its window, as the figure shows below.

The data shown in the figure above means that the connection is established

successfully, but it is unable to perform positioning.

In this case, please place the GPS module to the balcony or near the window, or

outdoors for testing, because GPS is less stable in searching signal indoors.

1. After waiting for a while, if the serial debugging assistant lists similar data in its

window as the figure shows below, it means GPS has performed positioning.And

you can see that the LED on the module, which remains on when GPS is unable

to perform the positioning, is flickering now.

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Notice: For its first positioning after cold starts, GPS module normally takes 1-3

minutes to finishing this positioning successfully in the open air with a good

weather. So, please be patient. Moreover, if there is a bad weather, it may take

more time for positioning, or even unable to perform positioning sometimes.

2. Install software\u-centersetup-7.0.2.1\u-centerSetup-7.0.2.1.exe (please ensure

you computer is connected to Internet).

Start the software, u-center, and you can see the interface as the figure shows

below.

3. Click Receiver menu, and select Port option to configure the actual serial port

number and Baud rate: 38400(default).

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Click the button to connect to the NEO-6M GPS module.

u-center will show the information as below:

4. Install a plug-in, GoogleEarthPluginSetup.exe, for a better view. After finishing the

installation, select Google Earth under the View menu in the u-center.

Notes: There may be some differences between the reality and the result shown

by Google Earth, because of GPS static drift.

Appendix

How to modify the baud rate via u-center?

1. Select View->Messages View, and unfold UBX->CFG(Config)->PRT(Ports).

Then choose the baud rate you want to use in the Baudrate option, and click

the button Send to complete the modification. The figures below show the

steps in details.

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UART GPS NEO-6M User Manual Waveshare

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2. Right now, if the module is powered off, the setting of the baud rate will

be restored to 9600. To remain the settings, you should save the

configuration information into the memory, following the steps listed

below.

①Configure the baud rate, as the figure below shows.

②Unfold UBX->CFG(Config)->CFG(Configuration), and then select

2-I2CEEPROM in the Devices option. Click the button Send to save

the configuration. The figure below shows the steps in details.

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After a successful positioning, you will receive a lot of information, as the figure

shows below.

What are the meanings of the information?

We will illustrate these information with an example of

$GPRMC,030742.00,A,2232.73830,N,11404.58520,E,0.356,,070314,,,A*77

1. Firstly, open the document chip PDF\NMEA0183.pdf

Secondly, find the relative explanations of GPRMC, as the figure shows.

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2. The meaning of each field in

$GPRMC,030742.00,A,2232.73830,N,11404.58520,E,0.356,,070314,,,A*77

is listed as below.

030742.00

UTC time; since the test location is Eastern eight zones, the actual time

should be 03+8=11(hour):07(minute):42(second)

Position state; it indicates valid

2232.73830

Latitude value

The Northern Hemisphere

11404.58520

Longitude value

The Eastern Hemisphere

0.356

Ground speed; 0.356knot (1knot =1 nautical mile per hour，which is

equivalent to 0.5m per second)

070314

UTC date; it indicates 7th March, 2014

Mode indication; it is in AssistNowAutonomous mode

Checksum; it is the result of XOR operation on the ASCII code of all the

characters between $ and *

For more detail instructions about u-center, please refer to

software\u-centersetup-7.0.2.1\User_Guide.pdf

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