Changes for page LT-22222-L -- LoRa I/O Controller User Manual

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...	...	@@ -45,114 +45,44 @@
45	45
46	46	== 1.2  Specifications ==
47	47
48		-(((
49	49	**Hardware System:**
50		-)))
51	51
52		-* (((
53		-STM32L072CZT6 MCU
54		-)))
55		-* (((
56		-SX1276/78 Wireless Chip
57		-)))
58		-* (((
59		-(((
60		-Power Consumption:
61		-)))
	50	+* STM32L072CZT6 MCU
	51	+* SX1276/78 Wireless Chip
	52	+* Power Consumption:
	53	+** Idle: 4mA@12v
	54	+** 20dB Transmit: 34mA@12v
62	62
63		-* (((
64		-Idle: 4mA@12v
65		-)))
66		-* (((
67		-20dB Transmit: 34mA@12v
68		-)))
69		-)))
70		-
71		-(((
72	72	**Interface for Model: LT22222-L:**
73		-)))
74	74
75		-* (((
76		-2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
77		-)))
78		-* (((
79		-2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
80		-)))
81		-* (((
82		-2 x Relay Output (5A@250VAC / 30VDC)
83		-)))
84		-* (((
85		-2 x 0~~20mA Analog Input (res:0.01mA)
86		-)))
87		-* (((
88		-2 x 0~~30V Analog Input (res:0.01v)
89		-)))
90		-* (((
91		-Power Input 7~~ 24V DC.
92		-)))
	58	+* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
	59	+* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
	60	+* 2 x Relay Output (5A@250VAC / 30VDC)
	61	+* 2 x 0~~20mA Analog Input (res:0.01mA)
	62	+* 2 x 0~~30V Analog Input (res:0.01v)
	63	+* Power Input 7~~ 24V DC.
93	93
94		-(((
95	95	**LoRa Spec:**
96		-)))
97	97
98		-* (((
99		-(((
100		-Frequency Range:
101		-)))
	67	+* Frequency Range:
	68	+** Band 1 (HF): 862 ~~ 1020 Mhz
	69	+** Band 2 (LF): 410 ~~ 528 Mhz
	70	+* 168 dB maximum link budget.
	71	+* +20 dBm - 100 mW constant RF output vs.
	72	+* +14 dBm high efficiency PA.
	73	+* Programmable bit rate up to 300 kbps.
	74	+* High sensitivity: down to -148 dBm.
	75	+* Bullet-proof front end: IIP3 = -12.5 dBm.
	76	+* Excellent blocking immunity.
	77	+* Low RX current of 10.3 mA, 200 nA register retention.
	78	+* Fully integrated synthesizer with a resolution of 61 Hz.
	79	+* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
	80	+* Built-in bit synchronizer for clock recovery.
	81	+* Preamble detection.
	82	+* 127 dB Dynamic Range RSSI.
	83	+* Automatic RF Sense and CAD with ultra-fast AFC.
	84	+* Packet engine up to 256 bytes with CRC.
102	102
103		-* (((
104		-Band 1 (HF): 862 ~~ 1020 Mhz
105		-)))
106		-* (((
107		-Band 2 (LF): 410 ~~ 528 Mhz
108		-)))
109		-)))
110		-* (((
111		-168 dB maximum link budget.
112		-)))
113		-* (((
114		-+20 dBm - 100 mW constant RF output vs.
115		-)))
116		-* (((
117		-+14 dBm high efficiency PA.
118		-)))
119		-* (((
120		-Programmable bit rate up to 300 kbps.
121		-)))
122		-* (((
123		-High sensitivity: down to -148 dBm.
124		-)))
125		-* (((
126		-Bullet-proof front end: IIP3 = -12.5 dBm.
127		-)))
128		-* (((
129		-Excellent blocking immunity.
130		-)))
131		-* (((
132		-Low RX current of 10.3 mA, 200 nA register retention.
133		-)))
134		-* (((
135		-Fully integrated synthesizer with a resolution of 61 Hz.
136		-)))
137		-* (((
138		-FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
139		-)))
140		-* (((
141		-Built-in bit synchronizer for clock recovery.
142		-)))
143		-* (((
144		-Preamble detection.
145		-)))
146		-* (((
147		-127 dB Dynamic Range RSSI.
148		-)))
149		-* (((
150		-Automatic RF Sense and CAD with ultra-fast AFC.
151		-)))
152		-* (((
153		-Packet engine up to 256 bytes with CRC.
154		-)))
155		-
156	156	== 1.3 Features ==
157	157
158	158	* LoRaWAN Class A & Class C protocol
...	...	@@ -199,21 +199,13 @@
199	199
200	200	== 3.1 How it works? ==
201	201
202		-(((
203	203	The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on **TX LED** will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. **TX LED** will be on for 5 seconds after joined in network. When there is message from server, the **RX LED** will be on for 1 second.
204		-)))
205	205
206		-(((
207		-In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H4.UseATCommand]] to set the keys in the devices.
208		-)))
	134	+In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:#AT_Command]] to set the keys in the devices.
209	209
210		-(((
211	211	3.2 Example to join LoRaWAN network
212		-)))
213	213
214		-(((
215	215	This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here.
216		-)))
217	217
218	218	[[image:image-20220523172350-1.png||height="266" width="864"]]
219	219
...	...	@@ -313,9 +313,7 @@
313	313
314	314	**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
315	315
316		-(((
317	317	Total : 11 bytes payload
318		-)))
319	319
320	320	[[image:image-20220523180452-3.png]]
321	321
...	...	@@ -407,7 +407,7 @@
407	407	**ATZ**
408	408	)))
409	409
410		-Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
	330	+Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
411	411
412	412	=== 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
413	413
...	...	@@ -442,7 +442,7 @@
442	442	)))
443	443
444	444
445		-Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
	365	+Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
446	446
447	447	**Plus below command for AVI1 Counting:**
448	448
...	...	@@ -494,7 +494,7 @@
494	494	**ATZ**
495	495	)))
496	496
497		-Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
	417	+Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
498	498
499	499	=== 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
500	500
...	...	@@ -543,7 +543,7 @@
543	543
544	544	**Downlink Command to set Trigger Condition**
545	545
546		-Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
	466	+Type Code: 0xAA. Downlink command same as AT Command [[AT+AVLIM, AT+ACLIM>>path:#AT_Trigger]]
547	547
548	548	Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
549	549
...	...	@@ -563,7 +563,7 @@
563	563
564	564	Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
565	565
566		-**Example2**: AA 02 01 00
	486	+Example2: AA 02 01 00
567	567
568	568	Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
569	569
...	...	@@ -1123,7 +1123,7 @@
1123	1123
1124	1124	[[image:image-20220524094641-12.png||height="402" width="718"]]
1125	1125
1126		-**Step 3**: Create an account or log in Mydevices.
	1046	+**Step **3: Create an account or log in Mydevices.
1127	1127
1128	1128	**Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1129	1129
...	...	@@ -1133,6 +1133,7 @@
1133	1133
1134	1134	After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1135	1135
	1056	+
1136	1136	[[image:image-20220524094909-1.png||height="335" width="729"]]
1137	1137
1138	1138	[[image:image-20220524094909-2.png||height="337" width="729"]]
...	...	@@ -1143,6 +1143,10 @@
1143	1143
1144	1144	[[image:image-20220524094909-5.png||height="341" width="734"]]
1145	1145
	1067	+
	1068	+
	1069	+
	1070	+
1146	1146	== 3.6 Interface Detail ==
1147	1147
1148	1148	=== 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
...	...	@@ -1158,10 +1158,8 @@
1158	1158	)))
1159	1159
1160	1160	(((
1161		-(((
1162	1162	Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high
1163	1163	)))
1164		-)))
1165	1165
1166	1166	[[image:1653357170703-587.png]]
1167	1167
...	...	@@ -1193,9 +1193,9 @@
1193	1193
1194	1194	So when sensor active, the current between NEC2501 pin1 and pin2 is:
1195	1195
1196		-[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
	1119	+[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
1197	1197
1198		-If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
	1121	+If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1199	1199
1200	1200
1201	1201	**Example3**: Connect to a 220v high active sensor.
...	...	@@ -1207,9 +1207,9 @@
1207	1207
1208	1208	So when sensor active, the current between NEC2501 pin1 and pin2 is:
1209	1209
1210		- [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
	1133	+ [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
1211	1211
1212		-If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
	1135	+If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %) [[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1213	1213
1214	1214	=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1215	1215
...	...	@@ -1244,575 +1244,419 @@
1244	1244
1245	1245	[[image:1653357648330-671.png||height="155" width="733"]]
1246	1246
1247		-=== 3.6.5 Relay Output ===
1248	1248
1249		-(((
	1171	+
	1172	+1.
	1173	+11.
	1174	+111. Relay Output
	1175	+
1250	1250	The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
1251		-)))
1252	1252
1253		-[[image:image-20220524100215-9.png]]
	1178	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1254	1254
1255		-[[image:image-20220524100215-10.png||height="382" width="723"]]
1256	1256
1257		-== 3.7 LEDs Indicators ==
	1181	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1258	1258
1259		-[[image:image-20220524100748-11.png]]
1260	1260
1261		-= 4. Use AT Command =
1262	1262
1263		-== 4.1 Access AT Command ==
1264	1264
	1186	+
	1187	+1.
	1188	+11. LEDs Indicators
	1189	+
	1190	+(% border="1" style="background-color:#f7faff" %)
	1191	+|**LEDs**|**Feature**
	1192	+|**PWR**|Always on if there is power
	1193	+|**SYS**|After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
	1194	+|**TX**|(((
	1195	+Device boot: TX blinks 5 times.
	1196	+
	1197	+Successful join network: TX ON for 5 seconds.
	1198	+
	1199	+Transmit a LoRa packet: TX blinks once
	1200	+)))
	1201	+|**RX**|RX blinks once when receive a packet.
	1202	+|**DO1**|
	1203	+|**DO2**|
	1204	+|**DO3**|
	1205	+|**DI2**|(((
	1206	+For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
	1207	+
	1208	+For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
	1209	+)))
	1210	+|**DI2**|(((
	1211	+For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
	1212	+
	1213	+For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
	1214	+)))
	1215	+|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
	1216	+|**DI2**|(((
	1217	+For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
	1218	+
	1219	+For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
	1220	+)))
	1221	+|**RO1**|
	1222	+|**RO2**|
	1223	+
	1224	+1. Use AT Command
	1225	+11. Access AT Command
	1226	+
1265	1265	LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1266	1266
1267		-[[image:1653358238933-385.png]]
	1229	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1268	1268
1269		-In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
1270	1270
1271		-[[image:1653358355238-883.png]]
	1232	+In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:**123456**) to active it. As shown below:
1272	1272
	1234	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
	1235	+
	1236	+
1273	1273	More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1274	1274
1275		-(((
1276	1276	AT+<CMD>?        : Help on <CMD>
1277		-)))
1278	1278
1279		-(((
1280	1280	AT+<CMD>         : Run <CMD>
1281		-)))
1282	1282
1283		-(((
1284	1284	AT+<CMD>=<value> : Set the value
1285		-)))
1286	1286
1287		-(((
1288	1288	AT+<CMD>=?       : Get the value
1289		-)))
1290	1290
1291		-(((
1292	1292	ATZ: Trig a reset of the MCU
1293		-)))
1294	1294
1295		-(((
1296	1296	AT+FDR: Reset Parameters to Factory Default, Keys Reserve
1297		-)))
1298	1298
1299		-(((
1300	1300	AT+DEUI: Get or Set the Device EUI
1301		-)))
1302	1302
1303		-(((
1304	1304	AT+DADDR: Get or Set the Device Address
1305		-)))
1306	1306
1307		-(((
1308	1308	AT+APPKEY: Get or Set the Application Key
1309		-)))
1310	1310
1311		-(((
1312	1312	AT+NWKSKEY: Get or Set the Network Session Key
1313		-)))
1314	1314
1315		-(((
1316	1316	AT+APPSKEY: Get or Set the Application Session Key
1317		-)))
1318	1318
1319		-(((
1320	1320	AT+APPEUI: Get or Set the Application EUI
1321		-)))
1322	1322
1323		-(((
1324	1324	AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1325		-)))
1326	1326
1327		-(((
1328	1328	AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1329		-)))
1330	1330
1331		-(((
1332	1332	AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)
1333		-)))
1334	1334
1335		-(((
1336	1336	AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1337		-)))
1338	1338
1339		-(((
1340	1340	AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1341		-)))
1342	1342
1343		-(((
1344	1344	AT+RX2FQ: Get or Set the Rx2 window frequency
1345		-)))
1346	1346
1347		-(((
1348	1348	AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1349		-)))
1350	1350
1351		-(((
1352	1352	AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1353		-)))
1354	1354
1355		-(((
1356	1356	AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1357		-)))
1358	1358
1359		-(((
1360	1360	AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1361		-)))
1362	1362
1363		-(((
1364	1364	AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1365		-)))
1366	1366
1367		-(((
1368	1368	AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1369		-)))
1370	1370
1371		-(((
1372	1372	AT+NWKID: Get or Set the Network ID
1373		-)))
1374	1374
1375		-(((
1376	1376	AT+FCU: Get or Set the Frame Counter Uplink
1377		-)))
1378	1378
1379		-(((
1380	1380	AT+FCD: Get or Set the Frame Counter Downlink
1381		-)))
1382	1382
1383		-(((
1384	1384	AT+CLASS: Get or Set the Device Class
1385		-)))
1386	1386
1387		-(((
1388	1388	AT+JOIN: Join network
1389		-)))
1390	1390
1391		-(((
1392	1392	AT+NJS: Get OTAA Join Status
1393		-)))
1394	1394
1395		-(((
1396	1396	AT+SENDB: Send hexadecimal data along with the application port
1397		-)))
1398	1398
1399		-(((
1400	1400	AT+SEND: Send text data along with the application port
1401		-)))
1402	1402
1403		-(((
1404	1404	AT+RECVB: Print last received data in binary format (with hexadecimal values)
1405		-)))
1406	1406
1407		-(((
1408	1408	AT+RECV: Print last received data in raw format
1409		-)))
1410	1410
1411		-(((
1412	1412	AT+VER: Get current image version and Frequency Band
1413		-)))
1414	1414
1415		-(((
1416	1416	AT+CFM: Get or Set the confirmation mode (0-1)
1417		-)))
1418	1418
1419		-(((
1420	1420	AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1421		-)))
1422	1422
1423		-(((
1424	1424	AT+SNR: Get the SNR of the last received packet
1425		-)))
1426	1426
1427		-(((
1428	1428	AT+RSSI: Get the RSSI of the last received packet
1429		-)))
1430	1430
1431		-(((
1432	1432	AT+TDC: Get or set the application data transmission interval in ms
1433		-)))
1434	1434
1435		-(((
1436	1436	AT+PORT: Get or set the application port
1437		-)))
1438	1438
1439		-(((
1440	1440	AT+DISAT: Disable AT commands
1441		-)))
1442	1442
1443		-(((
1444	1444	AT+PWORD: Set password, max 9 digits
1445		-)))
1446	1446
1447		-(((
1448	1448	AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1449		-)))
1450	1450
1451		-(((
1452	1452	AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1453		-)))
1454	1454
1455		-(((
1456	1456	AT+CFG: Print all settings
1457		-)))
1458	1458
1459		-== 4.2 Common AT Command Sequence ==
1460	1460
1461		-=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1462	1462
1463		-(((
	1333	+1.
	1334	+11. Common AT Command Sequence
	1335	+111. Multi-channel ABP mode (Use with SX1301/LG308)
	1336	+
1464	1464	If device has not joined network yet:
1465		-)))
1466	1466
1467		-(((
1468		-(% style="background-color:#dcdcdc" %)123456
1469		-)))
	1339	+123456
1470	1470
1471		-(((
1472		-(% style="background-color:#dcdcdc" %)AT+FDR
1473		-)))
	1341	+AT+FDR
1474	1474
1475		-(((
1476		-(% style="background-color:#dcdcdc" %)123456
1477		-)))
	1343	+123456
1478	1478
1479		-(((
1480		-(% style="background-color:#dcdcdc" %)AT+NJM=0
1481		-)))
	1345	+AT+NJM=0
1482	1482
1483		-(((
1484		-(% style="background-color:#dcdcdc" %)ATZ
1485		-)))
	1347	+ATZ
1486	1486
1487	1487
1488		-(((
1489	1489	If device already joined network:
1490		-)))
1491	1491
1492		-(((
1493		-(% style="background-color:#dcdcdc" %)AT+NJM=0
1494		-)))
	1352	+AT+NJM=0
1495	1495
1496		-(((
1497		-(% style="background-color:#dcdcdc" %)ATZ
1498		-)))
	1354	+ATZ
1499	1499
1500		-=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
	1356	+1.
	1357	+11.
	1358	+111. Single-channel ABP mode (Use with LG01/LG02)
1501	1501
1502		-(((
1503		-(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1504		-)))
	1360	+123456   Enter Password to have AT access.
1505	1505
1506		-(((
1507		-(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
1508		-)))
	1362	+AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1509	1509
1510		-(((
1511		-(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1512		-)))
	1364	+123456   Enter Password to have AT access.
1513	1513
1514		-(((
1515		-(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
1516		-)))
	1366	+AT+CLASS=C Set to work in CLASS C
1517	1517
1518		-(((
1519		-(% style="background-color:#dcdcdc" %) AT+NJM=0(%%) Set to ABP mode
1520		-)))
	1368	+AT+NJM=0 Set to ABP mode
1521	1521
1522		-(((
1523		-(% style="background-color:#dcdcdc" %) AT+ADR=0(%%) Set the Adaptive Data Rate Off
1524		-)))
	1370	+AT+ADR=0 Set the Adaptive Data Rate Off
1525	1525
1526		-(((
1527		-(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1528		-)))
	1372	+AT+DR=5  Set Data Rate
1529	1529
1530		-(((
1531		-(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
1532		-)))
	1374	+AT+TDC=60000  Set transmit interval to 60 seconds
1533	1533
1534		-(((
1535		-(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
1536		-)))
	1376	+AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1537	1537
1538		-(((
1539		-(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1540		-)))
	1378	+AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1541	1541
1542		-(((
1543		-(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)  Set RX2DR to match the downlink DR from server. see below
1544		-)))
	1380	+AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1545	1545
1546		-(((
1547		-(% style="background-color:#dcdcdc" %) AT+DADDR=26 01 1A F1 (%%)Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1548		-)))
	1382	+AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1549	1549
1550		-(((
1551		-(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1552		-)))
	1384	+ATZ          Reset MCU
1553	1553
1554		-(((
1555		-(% style="color:red" %)**Note:**
1556		-)))
	1386	+**Note:**
1557	1557
1558		-(((
1559		-(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1560		-2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1561		-3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1562		-4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1563		-)))
	1388	+1. Make sure the device is set to ABP mode in the IoT Server.
	1389	+1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
	1390	+1. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
	1391	+1. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1564	1564
1565		-(((
1566		-[[image:1653359097980-169.png||height="188" width="729"]]
1567		-)))
	1393	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
1568	1568
1569		-(((
1570		-
1571		-)))
1572	1572
1573		-=== 4.2.3 Change to Class A ===
	1396	+1.
	1397	+11.
	1398	+111. Change to Class A
1574	1574
1575	1575	If sensor JOINED
1576		-(% style="background-color:#dcdcdc" %)AT+CLASS=A
	1401	+
	1402	+AT+CLASS=A
	1403	+
1577	1577	ATZ
1578	1578
1579		-= 5. FAQ =
1580	1580
1581		-== 5.1 How to upgrade the image? ==
1582	1582
	1408	+
	1409	+
	1410	+1. FAQ
	1411	+
	1412	+1.
	1413	+11. How to upgrade the image?
	1414	+
1583	1583	The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1584	1584
1585	1585	* Support new features
1586	1586	* For bug fix
1587	1587	* Change LoRaWAN bands.
	1420	+
1588	1588	Below shows the hardware connection for how to upload an image to the LT:
1589		-* [[image:1653359603330-121.png]]
1590	1590
	1423	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
	1424	+
	1425	+
1591	1591	**Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
	1427	+
1592	1592	**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
	1429	+
1593	1593	**Step3: **Open flashloader; choose the correct COM port to update.
1594		-**For LT-22222-L**:
1595		-Hold down the PRO button and then momentarily press the RST reset button and the **DO1 led** will change from OFF to ON. When **DO1 LED** is on, it means the device is in download mode.
1596	1596
1597		- [[image:image-20220524103407-12.png]]
	1432	+**For LT-33222-L**:
1598	1598
1599		-[[image:image-20220524103429-13.png]]
	1434	+Hold down the PRO button and then momentarily press the RST reset button and the **DO2 led** will change from OFF to ON. When **DO2 LED** is on, it means the device is in download mode.
1600	1600
1601		-[[image:image-20220524104033-15.png]]
	1436	+**For LT-22222-L**:
1602	1602
1603		-(% style="color:red" %)**Notice**(%%): In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
	1438	+Hold down the PRO button and then momentarily press the RST reset button and the **DO1 led** will change from OFF to ON. When **DO1 LED** is on, it means the device is in download mode.
1604	1604
1605		-[[image:1653360054704-518.png||height="186" width="745"]]
1606	1606
1607		-(((
1608		-(((
1609		-== 5.2 How to change the LoRa Frequency Bands/Region? ==
1610		-)))
1611		-)))
1612	1612
1613		-(((
1614		-User can follow the introduction for [[how to upgrade image>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H5.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
	1442	+|(((
	1443	+Board detected
1615	1615	)))
1616	1616
1617		-(((
1618		-== 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
	1446	+|(((
	1447	+
1619	1619	)))
1620	1620
1621		-(((
1622		-(((
	1450	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]]
	1451	+
	1452	+
	1453	+
	1454	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]]
	1455	+
	1456	+
	1457	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image037.png]]
	1458	+
	1459	+
	1460	+**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
	1461	+
	1462	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
	1463	+
	1464	+
	1465	+1.
	1466	+11. How to change the LoRa Frequency Bands/Region?
	1467	+
	1468	+User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
	1469	+
	1470	+
	1471	+1.
	1472	+11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
	1473	+
1623	1623	In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
1624		-)))
1625		-)))
1626	1626
1627		-(((
1628		-(((
1629	1629	Assume we have a LG02 working in the frequency 868400000 now , below is the step.
1630		-)))
1631		-)))
1632	1632
1633		-(((
1634		-(% style="color:#4f81bd" %)**Step1**(%%): Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
1635		-)))
1636	1636
1637		-(((
1638		-[[image:1653360231087-571.png||height="401" width="727"]]
1639		-)))
	1479	+**Step1**: Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
1640	1640
1641		-(% style="color:red" %)Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
	1481	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image039.png]]
1642	1642
1643		-(% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
	1483	+Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
1644	1644
1645		-(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
1646		-(% style="background-color:#dcdcdc" %)AT+FDR  (%%) Reset Parameters to Factory Default, Keys Reserve
1647		-(% style="background-color:#dcdcdc" %)123456  (%%) Enter Password to have AT access.
1648		-(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)Set to ABP mode
1649		-(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)Set the Adaptive Data Rate Off
1650		-(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band)
1651		-(% style="background-color:#dcdcdc" %)AT+TDC=60000  (%%)Set transmit interval to 60 seconds
1652		-(% style="background-color:#dcdcdc" %)AT+CHS=868400000 (%%)Set transmit frequency to 868.4Mhz
1653		-(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1
1654		-(% style="background-color:#dcdcdc" %)ATZ                (%%)Reset MCU
1655	1655
	1486	+**Step2: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
	1487	+
	1488	+123456   Enter Password to have AT access.
	1489	+
	1490	+AT+FDR   Reset Parameters to Factory Default, Keys Reserve
	1491	+
	1492	+123456   Enter Password to have AT access.
	1493	+
	1494	+AT+NJM=0 Set to ABP mode
	1495	+
	1496	+AT+ADR=0 Set the Adaptive Data Rate Off
	1497	+
	1498	+AT+DR=5  Set Data Rate (Set AT+DR=3 for 915 band)
	1499	+
	1500	+AT+TDC=60000  Set transmit interval to 60 seconds
	1501	+
	1502	+AT+CHS=868400000 Set transmit frequency to 868.4Mhz
	1503	+
	1504	+AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1
	1505	+
	1506	+ATZ                Reset MCU
	1507	+
1656	1656	As shown in below:
1657	1657
1658		-[[image:1653360498588-932.png||height="485" width="726"]]
	1510	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.png]]
1659	1659
1660		-== 5.4 Can I see counting event in Serial? ==
1661	1661
1662		-(((
	1513	+
	1514	+1.
	1515	+11. Can I see counting event in Serial?
	1516	+
1663	1663	User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
1664		-)))
1665	1665
1666		-(((
1667		-= 6. Trouble Shooting =
1668		-)))
1669	1669
1670		-(((
1671		-(((
1672		-== 6.1 Downlink doesn’t work, how to solve it? ==
1673		-)))
1674		-)))
1675	1675
1676		-(((
1677		-Please see this link for how to debug:
1678	1678
1679		-[[http:~~/~~/8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/>>http://8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
1680		-)))
	1522	+1. Trouble Shooting
	1523	+11. Downlink doesn’t work, how to solve it?
1681	1681
1682		-(((
	1525	+Please see this link for how to debug:
	1526	+
1683	1683	[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work]]
1684		-)))
1685	1685
1686		-(((
1687		-== 6.2 Have trouble to upload image. ==
1688		-)))
1689	1689
1690		-(((
	1530	+1.
	1531	+11. Have trouble to upload image.
	1532	+
1691	1691	See this link for trouble shooting:
1692		-)))
1693	1693
1694		-(((
1695	1695	[[http:~~/~~/wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting]]
1696		-)))
1697	1697
1698		-(((
1699		-== 6.3 Why I can’t join TTN in US915 /AU915 bands? ==
1700		-)))
1701	1701
1702		-(((
	1538	+1.
	1539	+11. Why I can’t join TTN in US915 /AU915 bands?
	1540	+
1703	1703	It might be about the channels mapping. Please see this link for detail:
1704		-)))
1705	1705
1706		-(((
1707	1707	[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
1708		-)))
1709	1709
1710		-(((
1711		-= 7. Order Info =
1712		-)))
1713	1713
1714		-(((
1715		-(((
1716		-(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
1717		-)))
1718		-)))
1719	1719
1720		-(((
1721		-(((
1722		-(% style="color:#4f81bd" %)**XXX:**
1723		-)))
1724		-)))
1725	1725
1726		-* (((
1727		-(% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433
1728		-)))
1729		-* (((
1730		-(% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868
1731		-)))
1732		-* (((
1733		-(% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920
1734		-)))
1735		-* (((
1736		-(% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470
1737		-)))
1738		-* (((
1739		-(% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923
1740		-)))
1741		-* (((
1742		-(% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915
1743		-)))
1744		-* (((
1745		-(% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915
1746		-)))
1747		-* (((
1748		-(% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865
1749		-)))
	1548	+1. Order Info
1750	1750
1751		-(((
1752		-* (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
	1550	+**For LT-33222-L-XXX or LT-22222-L-XXX:**
1753	1753
1754		-= 8. Packing Info =
1755		-)))
	1552	+**XXX:**
1756	1756
1757		-(((
1758		-(((
	1554	+* **EU433**: LT with frequency bands EU433
	1555	+* **EU868**: LT with frequency bands EU868
	1556	+* **KR920**: LT with frequency bands KR920
	1557	+* **CN470**: LT with frequency bands CN470
	1558	+* **AS923**: LT with frequency bands AS923
	1559	+* **AU915**: LT with frequency bands AU915
	1560	+* **US915**: LT with frequency bands US915
	1561	+* **IN865**: LT with frequency bands IN865
	1562	+* **CN779**: LT with frequency bands CN779
	1563	+
	1564	+1. Packing Info
	1565	+
1759	1759	**Package Includes**:
1760		-)))
1761		-)))
1762	1762
1763		-(((
1764		-(((
1765		-* LT-22222-L I/O Controller x 1
	1568	+* LT I/O Controller x 1
1766	1766	* Stick Antenna for LoRa RF part x 1
1767	1767	* Bracket for controller x1
1768	1768	* Program cable x 1
1769		-)))
1770		-)))
1771	1771
1772		-(((
1773		-(((
1774	1774	**Dimension and weight**:
1775		-)))
1776		-)))
1777	1777
1778		-(((
1779		-(((
1780	1780	* Device Size: 13.5 x 7 x 3 cm
1781	1781	* Device Weight: 105g
1782	1782	* Package Size / pcs : 14.5 x 8 x 5 cm
1783	1783	* Weight / pcs : 170g
1784		-)))
1785		-)))
1786	1786
1787		-(((
1788		-= 9. Support =
1789		-)))
	1580	+1. Support
1790	1790
1791		-* (((
1792		-(((
1793		-Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1794		-)))
1795		-)))
1796		-* (((
1797		-(((
1798		-Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1799		-)))
1800		-)))
	1582	+* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
	1583	+* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1801	1801
1802		-(((
1803		-(((
1804		- [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
1805		-)))
1806		-
1807		-(((
1808		-= 10. Reference​​​​​ =
1809		-
1810		-* Product Page:
1811		-
1812		-LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
1813		-
1814		-* [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]
1815		-* [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1816		-* [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
1817		-)))
1818		-)))
	1585	+[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]

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