Version 18.1 by Edwin Chen on 2023/12/21 14:24
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1 **Table of Contents：**
2
3 {{toc/}}
4
5
6 (((
7 = 1. Introduction =
8
9 ----
10
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.
12 )))
13
14
15 = 2. Use Cellular Module GPS feature for LoRaWAN Timing. =
16
17 == 2.1 Configure on LG308N / LPS8N ==
18
19 (((
20 (% style="color:blue" %)**Below are the steps:**
21 )))
22
23 (((
24 **~1. Open the box and connect GPS antenna to GNSS port of EC25**
25 )))
26
27 [[image:image-20220527160148-2.png]]
28
29 Connect GPS antenna
30
31
32 (((
33 **2. modify the two files:**
34 )))
35
36 (((
37 /etc/chatscripts/3g.chat
38 )))
39
40 (% class="box" %)
41 (((
42 ABORT   BUSY
43 ABORT   'NO CARRIER'
44 ABORT   ERROR
45 REPORT  CONNECT
46 TIMEOUT 10
47 ""      "AT&F"
48 OK      "ATE1"
49 (% style="color:red" %)**OK  "AT+QGPS=1"   ~-~-> Add this line, so EC25 module GPS will be enable when dial up**(%%)
50 (% style="color:black" %)OK      'AT+CGDCONT=1,"IP","$USE_APN"'
51 SAY     "Calling UMTS/GPRS"
52 TIMEOUT 30
53 OK      "ATD$DIALNUMBER"
54 CONNECT ' '
55 )))
56
57
58 (((
59 (% 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.**
60 )))
61
62
63 (% class="box" %)
64 (((
65 (((
66 (((
67 gen_gw_cfg() {
68 json_init
69 json_add_object gateway_conf
70 json_add_string "gateway_ID" "$gwid"
71 json_add_string "server_address" "$server"
72 json_add_int "serv_port_up" "$upp"
73 json_add_int "serv_port_down" "$dpp"
74 json_add_int "stat_interval" "$stat"
75 json_add_boolean "forward_crc_valid" 1
76 json_add_boolean "forward_crc_error" 0
77 )))
78
79 (((
80 (% 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**
81 )))
82
83 (((
84 (% style="color:black" %) json_close_object
85 json_dump  > /etc/lora/local_conf.json(%%)
86 (% style="color:black" %)**}**
87 )))
88 )))
89 )))
90
91
92 (((
93 **3. Reboot the device and run logread -f to verify if GPS already works.**
94 )))
95
96 (% class="box" %)
97 (((
98 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"**(%%)
99 Fri Mar  6 04:08:59 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [main] TTY port /dev/ttyUSB1 open for GPS synchronization
100 Fri Mar  6 04:09:00 2020 cron.err crond[1689]: time disparity of 4301528 minutes detected
101 Fri Mar  6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ sockfd=4
102 Fri Mar  6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ sockfd=5
103 Fri Mar  6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ FPort Filter: 0
104 Fri Mar  6 04:09:00 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ DevAddrMask: 0x0
105 Fri Mar  6 04:09:34 2020 daemon.info lora_pkt_fwd[3016]: INFO: [jit] queue is empty
106 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,(%%)**
107 (% style="color:black" %)"rxnb":0,"rxok":0,"rxfw":0,"ackr":0.0,"dwnb":0,"txnb":0}}
108 Fri Mar  6 04:09:35 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [up] PUSH_ACK received in 293 ms
109 Fri Mar  6 04:09:35 2020 daemon.info lora_pkt_fwd[3016]: INFO~~ [down] PULL_ACK received in 596 ms
110 )))
111
112
113 == 2.2. Configure on LPS8v2 ==
114
115 (((
116 (% style="color:blue" %)**Below are the steps:**
117 )))
118
119 (((
120 **~1. Open the box and connect GPS antenna to GNSS port of EC25**
121 )))
122
123 [[image:image-20231208153214-1.png||height="426" width="590"]]
124
125 Connect GPS antenna
126
127
128 **2. modify the two files:**
129
130 /etc/rc.local
131
132 (% class="box" %)
133 (((
134 #!/bin/sh -e
135 #
136 # rc.local
137 #
138 # This script is executed at the end of each multiuser runlevel.
139 # Make sure that the script will "exit 0" on success or any other
140 # value on error.
141 #
142 # In order to enable or disable this script just change the execution
143 # bits.
144 #
145 # By default this script does nothing.
146
147 echo 0 > /sys/class/leds/dragino\:blue\:opt/brightness
148 echo 0 > /sys/class/leds/dragino\:green\:stat/brightness
149 echo 0 > /sys/class/leds/dragino\:red\:sys/brightness
150 (% style="color:red" %)**echo AT+QGPS=1 > /dev/ttyUSB2**
151
152
153 exit 0
154 )))
155
156 (% style="color:red" %)**Note: **(%%) **After above settings, LPS8v2 will (% style="color:blue" %)enable GPS(%%) automatically on boot.**
157
158
159 **The user can run (% style="color:red" %)"echo AT+QGPS=1 > /dev/ttyUSB2" (%%)to manually (% style="color:blue" %)enable GPS.(%%)**
160
161 **/usr/local/dragino/generate-config.sh, after configuring this, on the web page, select any frequency band and save to make this take effect.**
162
163 (% class="box" %)
164 (((
165 gen_gw_cfg() {
166 json_init
167 json_add_object gateway_conf
168 json_add_string "platform" "SX1$chip"
169 json_add_string "description" "Dragino LoRaWAN Gateway"
170 json_add_string "gateway_ID" "$gwid"
171 json_add_boolean "radiostream_enable" 1
172 json_add_string "ghost_host" "localhost"
173 json_add_string "ghost_port" "1760"
174 json_add_boolean "manage_enable" 0
175 json_add_boolean "custom_downlink" 0
176 json_add_int "stat_interval" "30"
177 json_add_boolean "wd_enable" 1
178 json_add_boolean "mac_decode" 0
179 json_add_boolean "mac2file" 0
180 json_add_boolean "mac2db" 0
181 json_add_string "log_mask" "1111"
182 (% style="color:red" %)**json_add_string "gps_tty_path" "/dev/ttyUSB1"   ~-~-~-~--> Add this line so lora program knows to get the gps info from EC25**(%%)
183 json_add_double "ref_latitude" "$latitude"
184 json_add_double "ref_longitude" "$longitude"
185 json_add_double "ref_altitude" "$altitude"
186 json_add_int "beacon_period" "0"
187 json_add_int "beacon_freq_hz" "869525000"
188 )))
189
190 **3. Reboot the device and run journalctl -u draginofwd -f to verify if GPS already works.**
191
192 [[image:image-20231208160114-2.png||height="288" width="907"]]
193
194
195 [[image:image-20231208161058-5.png||height="548" width="965"]]
196
197
198
199 = 3. Use Cellular Module GPS feature for System Timing. =
200
201 == 3.1 Configure on LPS8v2 ==
202
203

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