Wiki source code of Add GPS Support in LG308N / LPS8v2

Last modified by Xiaoling on 2024/07/31 17:46

version	line-number	content
9.1	1	Table of Contents：
	2
	3	{{toc/}}
	4
	5
1.8	6	(((
9.1	7	= 1. Introduction =
5.2	8
	9	----
	10
8.1	11	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.
1.8	12	)))
1.1	13
5.2	14
23.1	15	= 2. Connect GPS Antenna to Cellular modules =
8.1	16
25.1	17
22.1	18	Connect GNSS port to GPS antenna. The connector type is i-pex connector, please make sure the GPS antenna can be extended outdoor for GPS signal.
18.1	19
22.1	20	For LPS8v2:
	21
	22	[[image:image-20231208153214-1.png\|\|height="426" width="590"]]
	23
	24
	25	For LG308N:
	26
	27	[[image:image-20220527160148-2.png]]
	28
	29
	30	= 3. Use Cellular Module GPS feature for LoRaWAN Timing. =
	31
	32	== 3.1 Configure on LG308N / LPS8N ==
	33
1.8	34	(((
25.1	35
	36
5.2	37	(% style="color:blue" %)Below are the steps:
1.8	38	)))
1.1	39
1.8	40	(((
5.2	41	~1. Open the box and connect GPS antenna to GNSS port of EC25
1.8	42	)))
1.1	43
5.2	44	2. modify the two files:
1.1	45
1.9	46	(((
1.2	47	/etc/chatscripts/3g.chat
1.9	48	)))
1.1	49
1.3	50	(% class="box" %)
	51	(((
	52	ABORT BUSY
	53	ABORT 'NO CARRIER'
	54	ABORT ERROR
	55	REPORT CONNECT
1.2	56	TIMEOUT 10
1.3	57	"" "AT&F"
	58	OK "ATE1"
4.1	59	(% style="color:red" %)OK "AT+QGPS=1" ~-~-> Add this line, so EC25 module GPS will be enable when dial up(%%)
1.3	60	(% style="color:black" %)OK 'AT+CGDCONT=1,"IP","$USE_APN"'
	61	SAY "Calling UMTS/GPRS"
1.2	62	TIMEOUT 30
1.3	63	OK "ATD$DIALNUMBER"
1.2	64	CONNECT ' '
1.3	65	)))
1.1	66
7.2	67
1.8	68	(((
6.2	69	(% 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	70	)))
1.1	71
7.2	72
1.3	73	(% class="box" %)
	74	(((
1.9	75	(((
4.2	76	(((
1.3	77	gen_gw_cfg() {
1.2	78	json_init
	79	json_add_object gateway_conf
	80	json_add_string "gateway_ID" "$gwid"
	81	json_add_string "server_address" "$server"
	82	json_add_int "serv_port_up" "$upp"
	83	json_add_int "serv_port_down" "$dpp"
	84	json_add_int "stat_interval" "$stat"
	85	json_add_boolean "forward_crc_valid" 1
	86	json_add_boolean "forward_crc_error" 0
4.2	87	)))
	88
	89	(((
	90	(% 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
	91	)))
	92
	93	(((
1.8	94	(% style="color:black" %) json_close_object
4.2	95	json_dump > /etc/lora/local_conf.json(%%)
	96	(% style="color:black" %)}
1.3	97	)))
1.9	98	)))
4.2	99	)))
1.1	100
7.2	101
1.8	102	(((
5.2	103	3. Reboot the device and run logread -f to verify if GPS already works.
1.8	104	)))
1.1	105
1.3	106	(% class="box" %)
	107	(((
4.3	108	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	109	Fri Mar 6 04:08:59 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [main] TTY port /dev/ttyUSB1 open for GPS synchronization
	110	Fri Mar 6 04:09:00 2020 cron.err crond[1689]: time disparity of 4301528 minutes detected
	111	Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ sockfd=4
	112	Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ sockfd=5
	113	Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ FPort Filter: 0
	114	Fri Mar 6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ DevAddrMask: 0x0
	115	Fri Mar 6 04:09:34 2020 daemon.info lora_pkt_fwd[3016]: INFO: [jit] queue is empty
4.3	116	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	117	(% style="color:black" %)"rxnb":0,"rxok":0,"rxfw":0,"ackr":0.0,"dwnb":0,"txnb":0}}
	118	Fri Mar 6 04:09:35 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [up] PUSH_ACK received in 293 ms
	119	Fri Mar 6 04:09:35 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [down] PULL_ACK received in 596 ms
	120	)))
8.1	121
	122
22.1	123	== 3.2. Configure on LPS8v2 ==
8.1	124
16.1	125	(((
25.1	126
	127
16.1	128	(% style="color:blue" %)Below are the steps:
	129	)))
	130
	131	(((
	132	~1. Open the box and connect GPS antenna to GNSS port of EC25
	133	)))
	134
	135	2. modify the two files:
	136
	137	/etc/rc.local
	138
	139	(% class="box" %)
	140	(((
	141	#!/bin/sh -e
	142	#
	143	# rc.local
	144	#
	145	# This script is executed at the end of each multiuser runlevel.
	146	# Make sure that the script will "exit 0" on success or any other
	147	# value on error.
	148	#
	149	# In order to enable or disable this script just change the execution
	150	# bits.
	151	#
	152	# By default this script does nothing.
	153
	154	echo 0 > /sys/class/leds/dragino\:blue\:opt/brightness
	155	echo 0 > /sys/class/leds/dragino\:green\:stat/brightness
	156	echo 0 > /sys/class/leds/dragino\:red\:sys/brightness
	157	(% style="color:red" %)echo AT+QGPS=1 > /dev/ttyUSB2
	158
	159
	160	exit 0
	161	)))
	162
17.1	163	(% style="color:red" %)Note: (%%) After above settings, LPS8v2 will (% style="color:blue" %)enable GPS(%%) automatically on boot.
16.1	164
	165
17.1	166	The user can run (% style="color:red" %)"echo AT+QGPS=1 > /dev/ttyUSB2" (%%)to manually (% style="color:blue" %)enable GPS.(%%)
16.1	167
17.1	168	/usr/local/dragino/generate-config.sh, after configuring this, on the web page, select any frequency band and save to make this take effect.
16.1	169
	170	(% class="box" %)
	171	(((
	172	gen_gw_cfg() {
	173	json_init
	174	json_add_object gateway_conf
	175	json_add_string "platform" "SX1$chip"
	176	json_add_string "description" "Dragino LoRaWAN Gateway"
	177	json_add_string "gateway_ID" "$gwid"
	178	json_add_boolean "radiostream_enable" 1
	179	json_add_string "ghost_host" "localhost"
	180	json_add_string "ghost_port" "1760"
	181	json_add_boolean "manage_enable" 0
	182	json_add_boolean "custom_downlink" 0
	183	json_add_int "stat_interval" "30"
	184	json_add_boolean "wd_enable" 1
	185	json_add_boolean "mac_decode" 0
	186	json_add_boolean "mac2file" 0
	187	json_add_boolean "mac2db" 0
	188	json_add_string "log_mask" "1111"
25.1	189	(% style="color:red" %)json_add_string "gps_tty_path" "/dev/ttyUSB1" ~-~-~-~--> Add this line so lora program knows to get the gps info from EC25(%%)
16.1	190	json_add_double "ref_latitude" "$latitude"
	191	json_add_double "ref_longitude" "$longitude"
	192	json_add_double "ref_altitude" "$altitude"
	193	json_add_int "beacon_period" "0"
	194	json_add_int "beacon_freq_hz" "869525000"
	195	)))
	196
	197	3. Reboot the device and run journalctl -u draginofwd -f to verify if GPS already works.
	198
	199	[[image:image-20231208160114-2.png\|\|height="288" width="907"]]
	200
	201
	202	[[image:image-20231208161058-5.png\|\|height="548" width="965"]]
	203
	204
22.1	205	= 4. Use Cellular Module GPS feature for System Timing. =
18.1	206
22.1	207	== 4.1 Configure on LPS8v2 ==
18.1	208
25.1	209
20.1	210	This introduction shows how to use the Cellular Module GPS feature for System Timing.
	211
	212
	213	1. Download script from dragino site and move it to properly directory
	214
21.1	215	(% class="box" %)
20.1	216	(((
	217	root@dragino-e4e891:# wget http://repo.dragino.com/release/tool/gpstime/gpstodate.sh
	218	2023-12-21 07:25:25 http://repo.dragino.com/release/tool/gpstime/gpstodate.sh
	219	Resolving repo.dragino.com (repo.dragino.com)... 47.89.8.92
	220	Connecting to repo.dragino.com (repo.dragino.com)\|47.89.8.92\|:80... connected.
	221	HTTP request sent, awaiting response... 200 OK
	222	Length: 1114 (1.1K) [application/octet-stream]
	223	Saving to: ‘gpstodate.sh’
	224
	225	gpstodate.sh 100%[===========================================================================================================>] 1.09K .-KB/s in 0s
	226
	227	2023-12-21 07:25:25 (16.5 MB/s) - ‘gpstodate.sh’ saved [1114/1114]
	228
	229	root@dragino-e4e891:# chmod +x gpstodate.sh;mv gpstodate.sh /usr/bin/
	230	root@dragino-e4e891:#
	231	)))
	232
	233	2. Run cat /dev/ttyUSB1 to check if the GPS location is successful.
	234
	235	[[image:image-20231221153129-1.png\|\|height="440" width="632"]]
	236
	237
	238	3. Run the date and /usr/bin/gpstodate.sh & to check if the system time is correct
	239
	240
21.1	241	4. Add gpstodate.sh to cron work /etc/rc.local , LPS8v2 will Use Cellular Module GPS feature for System Timing automatically on boot
	242
	243	(% class="box" %)
	244	(((
	245	#!/bin/sh -e
	246	#
	247	# rc.local
	248	#
	249	# This script is executed at the end of each multiuser runlevel.
	250	# Make sure that the script will "exit 0" on success or any other
	251	# value on error.
	252	#
	253	# In order to enable or disable this script just change the execution
	254	# bits.
	255	#
	256	# By default this script does nothing.
	257
	258	echo 0 > /sys/class/leds/dragino\:blue\:opt/brightness
	259	echo 0 > /sys/class/leds/dragino\:green\:stat/brightness
	260	echo 0 > /sys/class/leds/dragino\:red\:sys/brightness
22.1	261	(% style="color:red" %)echo AT+QGPS=1 > /dev/ttyUSB2(%%)
21.1	262	(% style="color:red" %)/usr/bin/gpstodate.sh
	263
	264	exit 0
	265	)))
24.1	266
	267
25.1	268	= 5. Use external GPS module =
24.1	269
	270
	271
	272	== 5.1 Set up for LoRaWAN Time ==
	273
	274	== 5.2 Set up for System Time ==
	275
	276