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From version < 113.1 >
edited by Mengting Qiu
on 2024/08/27 16:21
To version < 114.1 >
edited by Mengting Qiu
on 2024/09/03 09:13
>
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901 901  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
902 902  
903 -
904 -​
905 905  
906 906  == 6.4 What if the signal is good but the domain name resolution fails? ==
907 907  
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927 927  [[image:image-20240827150121-5.png||height="476" width="680"]][[image:image-20240827145055-4.png||height="484" width="678"]]
928 928  
929 929  
928 +== 6.5 GPS debugging ==
930 930  
931 931  
931 +The following are three related AT commands that introduce GPS functions.
932 932  
933 +* **Turn on/off GPS**
933 933  
935 +(% style="color:blue" %)**AT Command: **(% style="color:#037691" %)**AT+GPS **
934 934  
937 +**Ex1:  **AT+GPS=0  ~/~/ Turn off GPS
938 +
939 +**Ex2:  **AT+GPS=1  ~/~/ Turn on GPS
940 +
941 +(% style="color:blue" %)**Downlink command:**(%%)** (% style="color:#037691" %)0x11(%%)**
942 +
943 +Format: Command Code (0x11) followed by 1 byte.
944 +
945 +Example:  Downlink Payload: **11 01   **~/~/ AT+GPS=1
946 +
947 +
948 +* **Set GNSS open time**
949 +
950 +Extend the time to turn on GNSS. The automatic GPS location time is extended when the node is activated.
951 +
952 +(% style="color:blue" %)**AT Command: **(% style="color:#037691" %)**AT+GNSST**
953 +
954 +Example: AT+GNSST=30  ~/~/ Set the GPS positioning time to 30 seconds
955 +
956 +(% style="color:blue" %)**Downlink command:**(%%)** (% style="color:#037691" %)0x10(%%)**
957 +
958 +Format: Command Code (0x10) followed by 2 bytes.
959 +
960 +Example:  Downlink Payload: **10 00 1E    **~/~/ AT+GNSST=30
961 +
962 +
963 +* **Set GPS positioning interval**
964 +
965 +Feature: Set GPS positioning interval (unit: hour).
966 +
967 +When GPS is enabled, the node automatically locates and uplinks each time it passes **GTDC time** after activation.
968 +
969 +(% style="color:blue" %)**AT Command: **(% style="color:#037691" %)**AT+GTDC**
970 +
971 +Example: AT+GTDC=24  ~/~/ Set the GPS positioning interval to 24h.
972 +
973 +(% style="color:blue" %)**Downlink command:**(%%)** (% style="color:#037691" %)0x12(%%)**
974 +
975 +Format: Command Code (0x12) followed by 3 bytes.
976 +
977 +Example: 24 hours:  24(D)=0x18(H)
978 +
979 + Downlink Payload: **12 00 00 18   **~/~/ AT+GTDC=24
980 +
981 +
982 +Indoor GPS signal is very weak, outdoor positioning is generally recommended.
983 +
984 +
985 +
986 +
987 +
988 +
989 +
990 +
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