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Summary of Contents for Telit Wireless Solutions SL869
- Page 1 SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1...
- Page 2 SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 APPLICABILITY TABLE PRODUCT SL869 SW Version 3.1.12.3 Reproduction forbidden without written authorization from Telit Communications S.p.A.- All Rights Reserved. Page 2 of 25 Mod. 0806 2011-07 Rev.2...
- Page 3 SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE Notice While reasonable efforts have been made to assure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein.
- Page 4 SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 Usage and Disclosure Restrictions License Agreements The software described in this document is the property of Telit and its licensors. It is furnished by express license agreement only and may be used only in accordance with the terms of such an agreement.
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Page 5: Table Of Contents
SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 Contents Introduction ......................7 1.1. Scope ..........................7 1.2. Audience ........................7 1.3. Contact Information, Support ..................7 1.4. Document Organization ....................8 ... - Page 6 SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 4.1. GPGGA ........................21 4.2. GNGSA ........................22 4.3. --GSV .......................... 23 4.4. GPRMC ........................24 Document History ....................25 Reproduction forbidden without written authorization from Telit Communications S.p.A.- All Rights Reserved.
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Page 7: Introduction
This document is intended for public distribution to potential customers who are evaluating the SL869 GPS/GLONASS module. It can also be used by customers who are developing application software for the Host Processor in a device that incorporates the SL869. -
Page 8: Document Organization
SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 1.4. Document Organization This document contains the following chapters (sample): “Chapter 1: “Introduction” provides a scope for this document, target audience, contact and support information, and text conventions. “Chapter 2: “Communication Interface”... -
Page 9: Communication Interface
GPS industry for serial communication with GPS receivers. 2.1. UART Serial communication with the SL869 is conducted over the UART port, which is assigned to Pins 20 (Tx) and 21 (Rx). There is no hardware flow control. The default port settings are: ... -
Page 10: Commands
Guide. NOTE: An easy way to send commands to the SL869 manually is to write the command to a text file and use the “send text file” function of the terminal emulator. When doing so, make sure that the <cr><lf>... -
Page 11: Commands Description
Toggle the SBAS feature ON and OFF $PSTMSBASSAT Select the SBAS satellite PRN code Unless otherwise noted in the following subsections, commands are echoed by the SL869 after the command is executed. Reproduction forbidden without written authorization from Telit Communications S.p.A.- All Rights Reserved. -
Page 12: Pstminitgps
SS – Decimal, 2 digits Second (00 to 59) The time and position data will be ignored by the SL869 if it already has an estimate of time and position, respectively. If the data is accepted, it will be reflected in the output messages, for example $GPGGA, and the SL869 will respond with the message: $PSTMINITGPSOK*40<cr><lf>... -
Page 13: Pstminittime
SS – Decimal, 2 digits Second (00 to 59) The input time will be ignored by the SL869 if it already has an estimate of time. If the data is accepted, it will be reflected in the output messages, for example $GPGGA. The SL869 will also respond with the message: $PSTMINITTIMEOK*11<cr><lf>... -
Page 14: Pstmclrephs
This command allows the user to clear all ephemeris data from backup SRAM and erase all ephemeris stored in NVM backup memory. It is typically used to force the SL869 to collect the most recent satellite ephemeris data, or to prepare the SL869 to be loaded with ephemeris data over the serial port. -
Page 15: Pstmephem
Example: $PSTMEPHEM,3,64,8f06786978691313132001009ba4ff009af9e5178c12aa faba006e00fc3700001f7eea25cab5b60780b00da183d906cb6048efd545e6 e12ff7002d0012c0c003*58 Note that the command is not echoed. The SL869 responds with a message having the following format: $PSTMEPHEM,<SatId>,<N>, <status> where SatId and N are the echoed parameters from the load command. The status is “OK” if the ephemeris message was accepted. -
Page 16: Pstmnmeaonoff
This is equivalent to an input parameter of 14 and is the most common definition of a cold start used in the industry. In response to this message the SL869 will perform a GPS engine reset. It will not however perform a system reboot. -
Page 17: Pstmwarm
3.9. $PSTMHOT This command causes the SL869 to perform a hot start. A hot start is defined as one in which position and time is known and ephemeris is valid from previous operation. There are no parameters, and there is no response message to this command. -
Page 18: Pstmgpsreset
This command allows the user to get the versions of the libraries embedded within the firmware application. It also allows the user to get the Telit firmware application version string, which is also output in a GPTXT message when the SL869 starts up. Synopsis: $PSTMGETSWVER,<Id><cr><lf>... -
Page 19: Pstmsbasonoff
SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 Type Indicates ARM compiler type If the input parameter value is 255, the SL869 responds with a message of the form: $GPTXT,<Telit version string>*<checksum><cr><lf> 3.13. $PSTMSBASONOFF This command can be used to toggle the SBAS differential GPS feature on and off. By default the SBAS feature is off (disabled) whenever the SL869 is reset. -
Page 20: Messages Description
SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 Messages Description The table below summarizes the messages that are output periodically by the SL869: Message ID Description $GPGGA NMEA: Global Position System fix data $GNGSA NMEA: GNSS Dilution of Precision (DOP) and active... -
Page 21: 1Vv0301002 Rev.6 - 2013-10-1
SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 4.1. GPGGA This message contains time, position, and fix status data. Format: $GPGGA,<Timestamp>,<Lat>,<N/S>,<Long>,<E/W>,<GPSQual>,<Sats>, <HDOP>,<Alt>,M,<GEOSep>,M,<DGPSAge>,<DGPSRef> *<checksum><cr><lf> Parameter Format Description Timestamp hhmmss.sss UTC time of position fix (HoursMinutesSeconds.Millisecs) DDMM.MMMM Latitude (DegreesMinutes.FractionalMinute) ‘N’ or ‘S’... -
Page 22: Gngsa
SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 4.2. GNGSA This message reports Dilution of Precision (DOP) values and the PRN codes of the active satellites used in the position fix. Two of these messages are output each second, one listing the GPS satellites, the other listing the GLONASS satellites. -
Page 23: Gsv
SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 4.3. --GSV This message reports the azimuth, elevation, and signal-to-noise (SNR) values for all satellites in view. Two of these messages are output each second, one having the “GP” talker ID and containing the visible GPS satellites, the other having the “GL”... -
Page 24: Gprmc
SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 4.4. GPRMC This message contains position, velocity, and time and date information for the current fix. Format: $GPRMC,<Timestamp>,<Status>,<Lat>,<N/S>,<Long>,<E/W>,<Speed>, <Course>,<Date>,<MagVar>,<MagVarDir>,<Mode>*<checksum><cr><lf> Parameter Format Description Timestamp hhmmss.sss UTC time of position fix (HoursMinutesSeconds.Millisecs) Status “A” or “V”... -
Page 25: Document History
SL869 SW User Guide 1VV0301002 Rev.6 – 2013-10-1 Document History Revision Date Changes 2012-03-19 Draft issue 2012-04-11 Corrected PSTMEPHEM command description by adding checksum field. 2012-06-15 Preliminary release for 3.1.0.1 firmware. Added SBAS and SW version commands, removed notch filter status output.
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