Wiki source code of Add GPS Support in LG308N / LPS8v2
Version 8.1 by Edwin Chen on 2023/12/07 21:16
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| author | version | line-number | content |
|---|---|---|---|
| 1 | ((( | ||
| 2 | = 1. Introduction = | ||
| 3 | |||
| 4 | ---- | ||
| 5 | |||
| 6 | It is possible to GPS supports in LG308N-EC25 version and LPS8v2-EC25 version so device will add location info to uplink packet to LoRaWAN server. | ||
| 7 | ))) | ||
| 8 | |||
| 9 | |||
| 10 | = 2. Add GPS support on LG308N = | ||
| 11 | |||
| 12 | ((( | ||
| 13 | (% style="color:blue" %)**Below are the steps:** | ||
| 14 | ))) | ||
| 15 | |||
| 16 | ((( | ||
| 17 | **~1. Open the box and connect GPS antenna to GNSS port of EC25** | ||
| 18 | ))) | ||
| 19 | |||
| 20 | [[image:image-20220527160148-2.png]] | ||
| 21 | |||
| 22 | Connect GPS antenna | ||
| 23 | |||
| 24 | |||
| 25 | ((( | ||
| 26 | **2. modify the two files:** | ||
| 27 | ))) | ||
| 28 | |||
| 29 | ((( | ||
| 30 | /etc/chatscripts/3g.chat | ||
| 31 | ))) | ||
| 32 | |||
| 33 | (% class="box" %) | ||
| 34 | ((( | ||
| 35 | ABORT BUSY | ||
| 36 | ABORT 'NO CARRIER' | ||
| 37 | ABORT ERROR | ||
| 38 | REPORT CONNECT | ||
| 39 | TIMEOUT 10 | ||
| 40 | "" "AT&F" | ||
| 41 | OK "ATE1" | ||
| 42 | (% style="color:red" %)**OK "AT+QGPS=1" ~-~-> Add this line, so EC25 module GPS will be enable when dial up**(%%) | ||
| 43 | (% style="color:black" %)OK 'AT+CGDCONT=1,"IP","$USE_APN"' | ||
| 44 | SAY "Calling UMTS/GPRS" | ||
| 45 | TIMEOUT 30 | ||
| 46 | OK "ATD$DIALNUMBER" | ||
| 47 | CONNECT ' ' | ||
| 48 | ))) | ||
| 49 | |||
| 50 | |||
| 51 | ((( | ||
| 52 | (% style="color:red" %)**Note: **(%%)**After above settings, the GPS will be enable when dial up, if user doesn't use Cellular for Internet access, above script won't execute, in this case, user can (% style="color:red" %)run "echo AT+QGPS=1 > /dev/ttyUSB2" (%%)to (% style="color:blue" %)enable GPS /usr/bin/generate-config.sh,(%%) after configure this, in the web page, select any frequency band and save to make this take affect.** | ||
| 53 | ))) | ||
| 54 | |||
| 55 | |||
| 56 | (% class="box" %) | ||
| 57 | ((( | ||
| 58 | ((( | ||
| 59 | ((( | ||
| 60 | gen_gw_cfg() { | ||
| 61 | json_init | ||
| 62 | json_add_object gateway_conf | ||
| 63 | json_add_string "gateway_ID" "$gwid" | ||
| 64 | json_add_string "server_address" "$server" | ||
| 65 | json_add_int "serv_port_up" "$upp" | ||
| 66 | json_add_int "serv_port_down" "$dpp" | ||
| 67 | json_add_int "stat_interval" "$stat" | ||
| 68 | json_add_boolean "forward_crc_valid" 1 | ||
| 69 | json_add_boolean "forward_crc_error" 0 | ||
| 70 | ))) | ||
| 71 | |||
| 72 | ((( | ||
| 73 | (% style="color:red" %)**json_add_string "gps_tty_path" "/dev/ttyUSB1" ~-~-~-~--> Add this line so lora program knows to get the gps info from EC25** | ||
| 74 | ))) | ||
| 75 | |||
| 76 | ((( | ||
| 77 | (% style="color:black" %) json_close_object | ||
| 78 | json_dump > /etc/lora/local_conf.json(%%) | ||
| 79 | (% style="color:black" %)**}** | ||
| 80 | ))) | ||
| 81 | ))) | ||
| 82 | ))) | ||
| 83 | |||
| 84 | |||
| 85 | ((( | ||
| 86 | **3. Reboot the device and run logread -f to verify if GPS already works.** | ||
| 87 | ))) | ||
| 88 | |||
| 89 | (% class="box" %) | ||
| 90 | ((( | ||
| 91 | Fri Mar 6 04:08:59 2020 daemon.info lora_pkt_fwd[3016]: (% style="color:red" %)**INFO~~ GPS serial port path is configured to "/dev/ttyUSB1"**(%%) | ||
| 92 | Fri Mar 6 04:08:59 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [main] TTY port /dev/ttyUSB1 open for GPS synchronization | ||
| 93 | Fri Mar 6 04:09:00 2020 cron.err crond[1689]: time disparity of 4301528 minutes detected | ||
| 94 | Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ sockfd=4 | ||
| 95 | Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ sockfd=5 | ||
| 96 | Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ FPort Filter: 0 | ||
| 97 | Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ DevAddrMask: 0x0 | ||
| 98 | Fri Mar 6 04:09:34 2020 daemon.info lora_pkt_fwd[3016]: INFO: [jit] queue is empty | ||
| 99 | Fri Mar 6 04:09:34 2020 daemon.info lora_pkt_fwd[3016]: STAT~~ {"stat":{"time":"2020-03-06 04:09:34 UTC"**,(% style="color:red" %)"lati":22.70627,"long":114.24277,"alti":58,(%%)** | ||
| 100 | (% style="color:black" %)"rxnb":0,"rxok":0,"rxfw":0,"ackr":0.0,"dwnb":0,"txnb":0}} | ||
| 101 | Fri Mar 6 04:09:35 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [up] PUSH_ACK received in 293 ms | ||
| 102 | Fri Mar 6 04:09:35 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [down] PULL_ACK received in 596 ms | ||
| 103 | ))) | ||
| 104 | |||
| 105 | |||
| 106 | = 2. Add GPS support on LPS8v2 = | ||
| 107 | |||
| 108 |