Wiki source code of Add GPS Support in LG308

Version 6.2 by Xiaoling on 2022/07/22 11:15

version	line-number	content
1.8	1	(((
5.2	2	= Introduction =
	3
	4	----
	5
1.2	6	It is possible to GPS support in LG308 EC25 version so device will add location info to uplink packet to LoRaWAN server.
1.8	7	)))
1.1	8
5.2	9
1.8	10	(((
5.2	11	(% style="color:blue" %)Below are the steps:
1.8	12	)))
1.1	13
1.8	14	(((
5.2	15	~1. Open the box and connect GPS antenna to GNSS port of EC25
1.8	16	)))
1.1	17
4.1	18	[[image:image-20220527160148-2.png]]
1.1	19
1.2	20	Connect GPS antenna
1.1	21
5.2	22
1.9	23	(((
5.2	24	2. modify the two files:
1.9	25	)))
1.1	26
1.9	27	(((
1.2	28	/etc/chatscripts/3g.chat
1.9	29	)))
1.1	30
1.3	31	(% class="box" %)
	32	(((
	33	ABORT BUSY
	34	ABORT 'NO CARRIER'
	35	ABORT ERROR
	36	REPORT CONNECT
1.2	37	TIMEOUT 10
1.3	38	"" "AT&F"
	39	OK "ATE1"
4.1	40	(% style="color:red" %)OK "AT+QGPS=1" ~-~-> Add this line, so EC25 module GPS will be enable when dial up(%%)
1.3	41	(% style="color:black" %)OK 'AT+CGDCONT=1,"IP","$USE_APN"'
	42	SAY "Calling UMTS/GPRS"
1.2	43	TIMEOUT 30
1.3	44	OK "ATD$DIALNUMBER"
1.2	45	CONNECT ' '
1.3	46	)))
1.1	47
1.8	48	(((
6.2	49	(% 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.
1.8	50	)))
1.1	51
1.3	52	(% class="box" %)
	53	(((
1.9	54	(((
4.2	55	(((
1.3	56	gen_gw_cfg() {
1.2	57	json_init
	58	json_add_object gateway_conf
	59	json_add_string "gateway_ID" "$gwid"
	60	json_add_string "server_address" "$server"
	61	json_add_int "serv_port_up" "$upp"
	62	json_add_int "serv_port_down" "$dpp"
	63	json_add_int "stat_interval" "$stat"
	64	json_add_boolean "forward_crc_valid" 1
	65	json_add_boolean "forward_crc_error" 0
4.2	66	)))
	67
	68	(((
	69	(% 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
	70	)))
	71
	72	(((
1.8	73	(% style="color:black" %) json_close_object
4.2	74	json_dump > /etc/lora/local_conf.json(%%)
	75	(% style="color:black" %)}
1.3	76	)))
1.9	77	)))
4.2	78	)))
1.1	79
1.8	80	(((
5.2	81	3. Reboot the device and run logread -f to verify if GPS already works.
1.8	82	)))
1.1	83
1.3	84	(% class="box" %)
	85	(((
4.3	86	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"(%%)
1.3	87	Fri Mar 6 04:08:59 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [main] TTY port /dev/ttyUSB1 open for GPS synchronization
	88	Fri Mar 6 04:09:00 2020 cron.err crond[1689]: time disparity of 4301528 minutes detected
	89	Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ sockfd=4
	90	Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ sockfd=5
	91	Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ FPort Filter: 0
	92	Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ DevAddrMask: 0x0
	93	Fri Mar 6 04:09:34 2020 daemon.info lora_pkt_fwd[3016]: INFO: [jit] queue is empty
4.3	94	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,(%%)
1.3	95	(% style="color:black" %)"rxnb":0,"rxok":0,"rxfw":0,"ackr":0.0,"dwnb":0,"txnb":0}}
	96	Fri Mar 6 04:09:35 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [up] PUSH_ACK received in 293 ms
	97	Fri Mar 6 04:09:35 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [down] PULL_ACK received in 596 ms
	98	)))

Wiki source code of Add GPS Support in LG308

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