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SIM868_GNSS_Application Note _V1.00 SIMCOM CONFIDENTIAL FILE

Smart Machine Smart Decision Document Title SIM868 GNSS Application Note Version Date Status 1.00 2017-01-03 Released Document Control ID SIM868_GNSS_Application Note_V1.00 General Notes SIMCom offers this information as a service to its customers, to support application and engineering efforts that use the products designed by SIMCom. The information provided is based upon requirements specifically provided to SIMCom by the customers. SIMCom has not undertaken any independent search for additional relevant information, including any information that may be in the customer’s possession. Furthermore, system validation of this product designed by SIMCom within a larger electronic system remains the responsibility of the customer or the customer’s system integrator. All specifications supplied herein are subject to change. Copyright This document contains proprietary technical information which is the property of SIMCom Limited., copying of this document and giving it to others and the using or communication of the contents thereof, are forbidden without express authority. Offenders are liable to the payment of damages. All rights reserved in the event of grant of a patent or the registration of a utility model or design. All specification supplied herein are subject to change without notice at any time. Copyright © Shanghai SIMCom Wireless Solutions Ltd. 2017 SIM928A868_GNSS_Application Note_V1.00 2017-01-03 3 SIMCOM CONFIDENTIAL FILE

Smart Machine Smart Decision Contents 1 Introduction .................................................................................................................................. 7 2 AT Command ................................................................................................................................ 8 AT+CGNSPWR GNSS power control ...................................................................... 8 AT+CGNSSEQ Define the last NMEA sentence that parsed ..................................... 9 AT+CGNSINF GNSS navigation information parsed from NMEA sentences ......... 11 AT+CGNSURC GNSS navigation, GEO-fences and speed alarm URC report ....... 12 AT+CGNSCMD Send command to GNSS ............................................................... 13 AT+CGNSTST Send data received from UART2 to UART1 ................................... 14 AT+CGNSCHK Check EPO file property ................................................................ 14 AT+CGNSDEL Delete EPO file ............................................................................... 15 AT+CGNSIPR Configure UART2 baud rate ............................................................ 16 AT+CGNSAID Send EPO file to GNSS engine ....................................................... 16 AT+CRFLOC Give reference location to GNSS engine ........................................... 17 AT+CGNSVER Query GNSS version....................................................................... 17 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 3 CME Error Code ........................................................................................................................ 19 4 AT Commands Examples .......................................................................................................... 20 Appendix ............................................................................................................................................ 21 A Related documents ..................................................................................................................... 21 B Terms and Abbreviations ........................................................................................................... 21 SIM928A868_GNSS_Application Note_V1.00 2017-01-03 4 SIMCOM CONFIDENTIAL FILE

Smart Machine Smart Decision Tables TABLE 2-1: PARSED NMEA MESSAGE .................................................................................................... 9 TABLE 2-2: PARSED GNSS NAVIGATION PARAMETERS ......................................................................... 10 TABLE 2-3: AT+CGNSINF RETURN PARAMETERS .............................................................................. 11 FIGURE 1-1 SIM868 SYSTEM CONNECTION Figures 7 SIM928A868_GNSS_Application Note_V1.00 2017-01-03 5 SIMCOM CONFIDENTIAL FILE

Smart Machine Smart Decision Version History Date 2017-01-03 Version Description of change 1.00 New version Author Xiping.li Scope This document presents the AT command of GNSS function and application examples. The document can apply to SIM868 module witch hardware release version is V2.01 and above and the software release version is 1418B03SIM868M32 and later. SIM928A868_GNSS_Application Note_V1.00 2017-01-03 6 SIMCOM CONFIDENTIAL FILE

Smart Machine Smart Decision 1 Introduction SIM868 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. GNSS application provides a method to interact with a GNSS module. Figure 1-1 SIM868 System connection For hardware design, please refer to SIM868_Hardware_Design_V1.02 "All-in-one mode". SIM928A868_GNSS_Application Note_V1.00 2017-01-03 7 SIMCOM CONFIDENTIAL FILE

Smart Machine Smart Decision 2 AT Command SIM868 module provides GNSS AT command sets as below. Commands Description AT+CGNSPWR AT+CGNSSEQ GNSS power control Define the last NMEA sentence that parsed AT+CGNSINF GNSS navigation information parsed from NMEA sentences AT+CGNSURC GNSS navigation, GEO-fence and speed alarm URC report control AT+CGNSCMD Send command to GNSS AT+CGNSTST Send data received from GNSS to AT UART AT+CGNSCHK Check EPO file property AT+CGNSDEL Delete EPO file AT+CGNSIPR Configure UART2 baud rate AT+CGNSAID Send EPO file to GNSS engine AT+CRFLOC Give reference location to GNSS engine AT+CGNSVER Query GNSS version 2.1 AT+CGNSPWR GNSS power control AT+CGNSPWR GNSS power control Test Command AT+CGNSPWR=? Response +CGNSPWR: (list of supported s ) OK Parameters See Write Command Response TA returns the current status of GNSS Power supply. +CGNSPWR: OK Parameters See Write Command Response GNSS POWER CONTROL ON/OFF OK or ERROR Read Command AT+CGNSPWR? Write Command AT+CGNSPWR= SIM928A868_GNSS_Application Note_V1.00 2017-01-03 8 SIMCOM CONFIDENTIAL FILE

Smart Machine Smart Decision Parameters 0 Turn off GNSS power supply 1 Turn on GNSS power supply Parameter Saving Mode NO_SAVE Reference 2.2 AT+CGNSSEQ Define the last NMEA sentence that parsed AT+CGNSSEQ Define the last NMEA sentence that parsed Test Command AT+CGNSSEQ=? Response +CGNSSEQ: (GGA,GSA,RMC,GSV) OK Parameters See Write Command Response TA returns the current setting of last sentence parsed: +CGNSSEQ: OK Parameters See Write Command Response OK or ERROR Parameters is a string type parameter. Read Command AT+CGNSSEQ? Write Command AT+CGNSSEQ= "GGA" refer to "GPGGA" or "GLGGA" or "GNGGA" "GSA" refer to "GPGSA" or "GLGSA" or "GNGSA" "GSV" refer to "GPGSV" or "GLGSV" or "GNGSV" "RMC" refer to "GPRMC" or "GLRMC" or "GNRMC" Parameter Saving Mode NO_SAVE Reference Note Factory setting is: AT+CGNSSEQ="RMC". Table 2-1: parsed NMEA message Message Description Possible Talker Identifiers GP GGA GSA Time, position and fix type data GNSS receiver operating mode, satellites used in the GP, GN SIM928A868_GNSS_Application Note_V1.00 2017-01-03 9 SIMCOM CONFIDENTIAL FILE

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