SimCom SIM7060 Series Installation and operating instructions

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SIM7060 Series_GNSS_Application Note

Version: 1.03

Release Date: May.23, 2019

Application

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About Document

Document Information

Document

Title

SIM7060 Series_GNSS_Application Note

Version

1.03

Document Type

Application Note

Document Status Released/Confidential

Revision History

Revision Date Owner Status / Comments

1.00 Jul 10, 2010 Zhao.wang First Release

1.01 Dec 14, 2018 Zhao.wang Modify the AT+CGNSRST

1.02 Jan 16, 2019 Zhao.wang Modify the AT+CGNSINF

1.03 May 23, 2019 Wenjie.lai

Revised

Related Documents

[1] SIM7020 Series_AT Command Manual_V1.03

This document applies to the following products:

Name

Type

Size (mm) Comments

SIM7060C NB1+GNSS

24*24 Band 1/3/5/8

SIM7060G

NB2+GNSS

24*24 Band 1/2/3/4/5/8/12/13/17/18/19/20/25/26/28/66/70/71

Copyrights

This document contains proprietary technical information which is the property of SIMCom Wireless Solutions Co.,Ltd. Copying

of this document and giving it to others and the using or communication of the contents thereof, are forbidden without express

registration of a utility model or design. All specification supplied herein are subject to change without notice at any time.

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Contents

About Document ...................................................................................................................2

Document Information..............................................................................................................2

Revision History.........................................................................................................................2

Related Documents...................................................................................................................2

Copyrights .................................................................................................................................2

Contents................................................................................................................................3

Figure and Table.....................................................................................................................3

1Purpose of this document ...............................................................................................4

2Introduction ...................................................................................................................4

3AT Command.................................................................................................................. 4

3.1 AT+CGNSPWR GNSS Power Control ...........................................................................5

3.2 AT+CGNSINF GNSS Navigation Information Parsed from NMEA Sentences...............5

3.3 AT+CGNSRST GNSS Reset Mode.................................................................................7

3.4 AT+CGNSTST Send Data Received from GNSS to AT UART .........................................7

4CME Error Code ..............................................................................................................8

5GNSS Example ................................................................................................................8

Appendix............................................................................................................................. 10

A Terms and Abbreviations ..................................................................................................10

Contact................................................................................................................................ 11

Figure and Table

Figure 1 SIM7060 series system connection.......................................................................... 4

Table 1 AT+CGNSINF return parameters ............................................................................... 6

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1Purpose of this document

Based on module AT command manual, this document will introduce GNSS application process.

Developers could understand and develop application quickly and efficiently based on this

document.

2Introduction

SIM7060 series module combines GNSS technology for satellite navigation. Featuring an

industry-standard interface and GNSS function, it allows variable assets to be tracked seamlessly

at any location and anytime with signal coverage.

SIM7060 series includes SIM7060G and SIM7060C, among which SIM7060G is MT2625+MT3333

and SIM7060C is MT2625+AG3331.

GNSS application provides a method to interact with a GNSS module.

Figure 1 SIM7060 series system connection

3AT Command

SIM7060 series modules provide GNSS AT commands are as follows:

Commands Description

AT+CGNSPWR GNSS power control

AT+CGNSINF GNSS navigation information parsed from NMEA sentences

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AT+CGNSRST GNSS Reset Mode

AT+CGNSTST Send data received from GNSS to AT UART

3.1 AT+CGNSPWR GNSS Power Control

3.2 AT+CGNSINF GNSS Navigation Information Parsed

from NMEA Sentences

AT+CGNSINF GNSS Navigation Information Parsed from NMEA Sentences

Execution

Command

AT+CGNSINF

Response

+CGNSINF: <GNSS run status>,<Fix status

>,<UTC date &

Time>,<Latitude>,<Longitude>,<MSL Altitude>,<Speed Over

Ground>,<Course Over Ground>,<Fix

Mode>,<Reserved1>,<HDOP>,<PDOP>,<VDOP>,<Reserved2>,<GNSS

AT+CGNSPWR GNSS Power Control

Test Command

AT+CGNSPWR=?

Response

+CGNSPWR: (list of supported <mode>s)

Parameters

See Write Command

Read Command

AT+CGNSPWR?

Response

TA returns the current status of GNSS Power supply

+CGNSPWR: <mode>

Parameters

See Write Command

Write Command

AT+CGNSPWR=<m

ode>

Response

ERROR

Parameters

<mode>

0Turn off GNSS power supply

1 Turn on GNSS power supply

Reference

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Satellites in View>,<GPS Satellites Used>,<GLONASS Satellites

Used>,<Reserved3>,<C/N0 max>,<HPA>,<VPA>

Parameters

0 GNSS off

1 GNSS on

0 Not fixed position

1 Fixed position

See below table 1.

Reference

Table 1 AT+CGNSINF return parameters

Index

Parameter

Unit

Range

Length

1 GNSS run status -- 0-1 1

2 Fix status -- 0-1 1

3 UTC date & Time yyyyMMddhh

mmss.sss

yyyy: [1980,2039]

MM : [1,12]

dd: [1,31]

hh: [0,23]

mm: [0,59]

ss.sss:[0.000,60.999]

4 Latitude ±dd.dddddd [-90.000000,90.000000] 10

Longitude

±ddd.dddddd

[-180.000000,180.000000]

6 MSL Altitude meters 8

7 Speed Over Ground Km/hour [0,999.99] 6

8 Course Over Ground degrees [0,360.00] 6

9 Fix Mode -- 0,1,2[1] 1

10 Reserved1 0

11 HDOP -- [0,99.9] 4

12 PDOP -- [0,99.9] 4

13 VDOP -- [0,99.9] 4

14 Reserved2 0

15 GNSS Satellites in View -- [0,99] 2

16 GPS Satellites Used -- [0,99] 2

17 GLONASS Satellites

-- [0,99] 2

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Used

18 Reserved3 0

19 C/N0 max dBHz [0,55] 2

20 HPA[2] meters [0,9999.9] 6

21 VPA[2] meters [0,9999.9] 6

Total：(94) chars

Note:

1. The range of <Fix Mode> depends on the GNSS chip used.

2. Reserved.

3.3 AT+CGNSRST GNSS Reset Mode

AT+CGNSRST GNSS Reset Mode

Test Command

AT+CGNSRST=?

Response

+CGNSRST: (0-2)

Parameters

See Write Command

Write Command

AT+CGNSRST=<n>

Response

If send ok:

If send false:

ERROR

Parameters

<n>

0Reset GNSS in COLD start mode

1 Reset GNSS in HOT start mode

2 Reset GNSS in WARM start mode

Reference

3.4 AT+CGNSTST Send Data Received from GNSS to AT

UART

AT+CGNSTST Send Data Received from GNSS to AT UART

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Test Command

AT+CGNSTST=?

Response

+CGNSTST: (0-1),(1-255)

Parameters

See Write Command

Read Command

AT+CGNSTST?

Response

+CGNSTST: <mode>

Parameters

See Write Command

Write Command

AT+CGNSTST=<mod

e>[,<cont>]

Response

ERROR

Parameters

<mode>

0Turn off GNSS test mode

1 Turn on GNSS test mode

<cont> The number of NMEA data package

1-255

Reference

4CME Error Code

The following errors are related to GNSS. The format is like this: +CME ERROR: <err>. The detail

error code and description is list in the following table.

Code Description

895 GNSS baud rate selected by HW

891 GNSS data check sum err

5GNSS Example

AT Command Response Description

AT+CGNSPWR=1 OK Turn on GNSS power

AT+CGNSPWR=0 OK Turn off GNSS power

AT+CGNSINF +CGNSINF:

1,1,20150327014838.000,31.221783,121.354

Read GNSS navigation information

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528,114.600,0.28,0.0,1,,1.9,2.2,1.0,,8,4,,,42,,

AT+CGNSRST=0 OK Restart GNSS in cold start mode

AT+CGNSTST=1 OK Send NMEA data to AT UART

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Appendix

A Terms and Abbreviations

Abbreviation Definition

APN Access Point Name

URC Unsolicited Result Code

FTP File Transfer Protocol

GGA Global Positioning System Fixed Data

GLL Geographic Position - Latitude/Longitude

GNSS Global Navigation Satellite System

GPS

Global Positioning System

AGPS Assisted GPS

DGPS Differential Global Positioning System

GPRS General Packet Radio Service

GSA GNSS DOP and Active Satellites

GSV GNSS Satellites in View

HPA Horizontal Position Accuracy

VPA Vertical Position Accuracy

GEO-Fence A geographic area

HTTP The Hypertext Transfer Protocol

HDOP Horizontal Dilution of Precision

HTTP Hypertext Transfer Protocol

NMEA National Marine Electronics Association

NMEA

National Marine Electronics Association

PDOP Position Dilution of Precision

PDP Packet Data Protocol

RMC Recommended Minimum Specific GNSS Data

VDOP Vertical Dilution of Precision

VTG Course Over Ground and Ground Speed

ZDA Time & Date

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