Version 455.1 by Mengting Qiu on 2023/10/28 09:25
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15 **Table of Contents:**
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19 (% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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22 {{toc/}}
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31
32
33 = 1.  Introduction =
34
35 == 1.1 ​ What is LSN50 LoRa Sensor Node ==
36
37
38 (((
39 (((
40 LSN50 is a Long Range LoRaWAN Sensor Node. It is designed for (% style="color:#4472c4" %)**outdoor data logging **(%%)and powered by (% style="color:#4472c4" %)**Li/SOCl2 battery**(%%) for long term use and secure data transmission. It is designed to facilitate developers to quickly deploy industrial level LoRa and IoT solutions. It helps users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to program, create and connect your things everywhere.
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42
43 (((
44 It is based on SX1276/SX1278 allows the user to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
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46
47 (((
48 (% style="color:#4472c4" %)**LSN50**(%%) uses STM32l0x chip from ST, STML0x is the (% style="color:#4472c4" %)**ultra-low-power**(%%) STM32L072xxxx microcontrollers incorporate the connectivity power of the universal serial bus (USB 2.0 crystal-less) with the high-performance ARM® Cortex®-M0+ 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (192 Kbytes of Flash program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.
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50
51 (((
52 LSN50 is an (% style="color:#4472c4" %)**open source product**(%%), it is based on the STM32Cube HAL drivers and lots of libraries can be found in ST site for rapid development.
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54 )))
55
56
57 [[image:1656294562709-486.png]]
58
59
60 == 1.2  Specifications ==
61
62
63 (% style="color:#037691" %)**Micro Controller:**
64
65
66 * MCU: STM32L072xxxx
67 * Flash: 128KB
68 * RAM: 20KB
69 * EEPROM: 6KB
70 * Clock Speed: 32Mhz
71
72 (% style="color:#037691" %)**Common DC Characteristics:**
73
74 * Supply Voltage: 2.1v ~~ 3.6v
75 * Operating Temperature: -40 ~~ 85°C
76 * I/O pins: Refer to [[STM32L072 datasheet>>https://www.st.com/resource/en/datasheet/stm32l072cz.pdf]]
77
78 (% style="color:#037691" %)**LoRa Spec:**
79
80 * Frequency Range,
81 ** Band 1 (HF): 862 ~~ 1020 Mhz
82 * or
83 ** Band 2 (LF): 410 ~~ 528 Mhz
84 * 168 dB maximum link budget.
85 * +20 dBm - 100 mW constant RF output vs.
86 * +14 dBm high efficiency PA.
87 * Programmable bit rate up to 300 kbps.
88 * High sensitivity: down to -148 dBm.
89 * Bullet-proof front end: IIP3 = -12.5 dBm.
90 * Excellent blocking immunity.
91 * Low RX current of 10.3 mA, 200 nA register retention.
92 * Fully integrated synthesizer with a resolution of 61 Hz .
93 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
94 * Built-in bit synchronizer for clock recovery.
95 * Preamble detection.
96 * 127 dB Dynamic Range RSSI.
97 * Automatic RF Sense and CAD with ultra-fast AFC.
98 * Packet engine up to 256 bytes with CRC.
99 * LoRaWAN 1.0.2 Specification
100
101 (% style="color:#037691" %)**Battery:**
102
103 * Li/SOCI2 un-chargeable battery
104 * Capacity: 4000mAh
105 * Self Discharge: <1% / Year @ 25°C
106 * Max continuously current: 130mA
107 * Max boost current: 2A, 1 second
108
109 (% style="color:#037691" %)**Power Consumption**
110
111 * STOP Mode: 2.7uA @ 3.3v
112 * LoRa Transmit Mode: 125mA @ 20dBm 44mA @ 14dBm
113
114
115 == ​1.3  Features ==
116
117
118 * LoRaWAN 1.0.3 Class A, Class C
119 * STM32L072xxxx MCU
120 * SX1276/78 Wireless Chip
121 * Pre-load bootloader on USART1/USART2
122 * MDK-ARM Version 5.24a IDE
123 * I2C, LPUSART1, USB, SPI2
124 * 3x12bit ADC, 1x12bit DAC
125 * 20xDigital I/Os
126 * LoRa™ Modem
127 * Preamble detection
128 * Baud rate configurable
129 * CN470/EU433/KR920/US915/IN865
130 * EU868/AS923/AU915/MA869
131 * Open-source hardware / software
132 * Available Band:433/868/915/920 Mhz
133 * IP66 Waterproof Enclosure
134 * Ultra-Low Power consumption
135 * AT Commands to change parameters
136 * 4000mAh or 8500mAh Battery for long term use.
137
138
139 == 1.4 ​ Applications ==
140
141
142 * Smart Cities
143 * Smart Factory
144 * Smart Metering
145 * Smart Agriculture
146 * Smart Buildings & Home Automation
147 * Logistics and Supply Chain Management
148
149
150 == 1.5  Pin Definitions and Switch ==
151
152
153 (% class="wikigeneratedid" %)
154 [[image:1656295519542-152.png||height="413" width="728"]]
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157 (% class="wikigeneratedid" %)
158 [[image:1656295532863-613.png||height="371" width="721"]]
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161 (% border="1" cellspacing="0" style="width:520px" %)
162 |=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)**No.**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**Signal**|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)**Direction**|=(% style="width: 180px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 180px;background-color:#D9E2F3;color:#0070C0" %)Remark
163 |(% style="background-color:#f2f2f2; width:44px" %)1|(% style="background-color:#f2f2f2; width:86px" %)VCC(2.9V)|(% style="background-color:#f2f2f2; width:84px" %)OUTPUT|(% style="background-color:#f2f2f2; width:322px" %)VCC|(% style="background-color:#f2f2f2; width:296px" %)Directly connect to main power for board
164 |(% style="background-color:#f2f2f2; width:44px" %)2|(% style="background-color:#f2f2f2; width:86px" %)PA0|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)Used as ADC in LSN50 image
165 |(% style="background-color:#f2f2f2; width:44px" %)3|(% style="background-color:#f2f2f2; width:86px" %)PA1|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
166 |(% style="background-color:#f2f2f2; width:44px" %)4|(% style="background-color:#f2f2f2; width:86px" %)PA2|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip, 10k pull up to VCC|(% style="background-color:#f2f2f2; width:296px" %)Used as UART_TXD in LSN50 image
167 |(% style="background-color:#f2f2f2; width:44px" %)5|(% style="background-color:#f2f2f2; width:86px" %)PA3|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip, 10k pull up to VCC|(% style="background-color:#f2f2f2; width:296px" %)Used as UART_RXD in LSN50 image
168 |(% style="background-color:#f2f2f2; width:44px" %)6|(% style="background-color:#f2f2f2; width:86px" %)PB6|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip, 10k pull up to VCC|(% style="background-color:#f2f2f2; width:296px" %)
169 |(% style="background-color:#f2f2f2; width:44px" %)7|(% style="background-color:#f2f2f2; width:86px" %)PB7|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip, 10k pull up to VCC|(% style="background-color:#f2f2f2; width:296px" %)
170 |(% style="background-color:#f2f2f2; width:44px" %)8|(% style="background-color:#f2f2f2; width:86px" %)PB3|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip, 10k pull up to VCC|(% style="background-color:#f2f2f2; width:296px" %)
171 |(% style="background-color:#f2f2f2; width:44px" %)9|(% style="background-color:#f2f2f2; width:86px" %)PB4|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
172 |(% style="background-color:#f2f2f2; width:44px" %)10|(% style="background-color:#f2f2f2; width:86px" %)PA9|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip, 10k pull up to VCC|(% style="background-color:#f2f2f2; width:296px" %)
173 |(% style="background-color:#f2f2f2; width:44px" %)11|(% style="background-color:#f2f2f2; width:86px" %)PA10|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip, 10k pull up to VCC|(% style="background-color:#f2f2f2; width:296px" %)
174 |(% style="background-color:#f2f2f2; width:44px" %)12|(% style="background-color:#f2f2f2; width:86px" %)GND|(% style="background-color:#f2f2f2; width:84px" %) |(% style="background-color:#f2f2f2; width:322px" %)Ground|(% style="background-color:#f2f2f2; width:296px" %)
175 |(% style="background-color:#f2f2f2; width:44px" %)13|(% style="background-color:#f2f2f2; width:86px" %)VCC(2.9V)|(% style="background-color:#f2f2f2; width:84px" %)OUTPUT|(% style="background-color:#f2f2f2; width:322px" %)VCC|(% style="background-color:#f2f2f2; width:296px" %)Directly connect to main power for board
176 |(% style="background-color:#f2f2f2; width:44px" %)14|(% style="background-color:#f2f2f2; width:86px" %)Jumper|(% style="background-color:#f2f2f2; width:84px" %) |(% style="background-color:#f2f2f2; width:322px" %)Power on/off jumper|(% style="background-color:#f2f2f2; width:296px" %)
177 |(% style="background-color:#f2f2f2; width:44px" %)15|(% style="background-color:#f2f2f2; width:86px" %)PA4|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
178 |(% style="background-color:#f2f2f2; width:44px" %)16|(% style="background-color:#f2f2f2; width:86px" %)NRST|(% style="background-color:#f2f2f2; width:84px" %)In|(% style="background-color:#f2f2f2; width:322px" %)Reset MCU|(% style="background-color:#f2f2f2; width:296px" %)
179 |(% style="background-color:#f2f2f2; width:44px" %)17|(% style="background-color:#f2f2f2; width:86px" %)PA12|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
180 |(% style="background-color:#f2f2f2; width:44px" %)18|(% style="background-color:#f2f2f2; width:86px" %)PA11|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
181 |(% style="background-color:#f2f2f2; width:44px" %)19|(% style="background-color:#f2f2f2; width:86px" %)PA14|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
182 |(% style="background-color:#f2f2f2; width:44px" %)20|(% style="background-color:#f2f2f2; width:86px" %)PB13|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
183 |(% style="background-color:#f2f2f2; width:44px" %)21|(% style="background-color:#f2f2f2; width:86px" %)PB12|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
184 |(% style="background-color:#f2f2f2; width:44px" %)22|(% style="background-color:#f2f2f2; width:86px" %)PB15|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
185 |(% style="background-color:#f2f2f2; width:44px" %)23|(% style="background-color:#f2f2f2; width:86px" %)PB14|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
186 |(% style="background-color:#f2f2f2; width:44px" %)24|(% style="background-color:#f2f2f2; width:86px" %)PA13|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)
187 |(% style="background-color:#f2f2f2; width:44px" %)25|(% style="background-color:#f2f2f2; width:86px" %)PA8|(% style="background-color:#f2f2f2; width:84px" %)In/Out|(% style="background-color:#f2f2f2; width:322px" %)Directly from STM32 chip|(% style="background-color:#f2f2f2; width:296px" %)Default use to turn on/off LED1 in LSN50 image
188 |(% style="background-color:#f2f2f2; width:44px" %)26|(% style="background-color:#f2f2f2; width:86px" %)GND|(% style="background-color:#f2f2f2; width:84px" %) |(% style="background-color:#f2f2f2; width:322px" %)Ground|(% style="background-color:#f2f2f2; width:296px" %)
189 |(% style="background-color:#f2f2f2; width:44px" %)27|(% style="background-color:#f2f2f2; width:86px" %)+5V|(% style="background-color:#f2f2f2; width:84px" %)Out|(% style="background-color:#f2f2f2; width:322px" %)5v output power|(% style="background-color:#f2f2f2; width:296px" %)(((
190 Controlled by PB5(Low to Enable, High to Disable)
191
192 Continuous output : max 600mA
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194 Pulse output : max 1A
195 )))
196 |(% style="background-color:#f2f2f2; width:44px" %)28|(% style="background-color:#f2f2f2; width:86px" %)LED1|(% style="background-color:#f2f2f2; width:84px" %) |(% style="background-color:#f2f2f2; width:322px" %)Controlled by PA8|(% style="background-color:#f2f2f2; width:296px" %)Blink on transmit
197 |(% style="background-color:#f2f2f2; width:44px" %)29|(% style="background-color:#f2f2f2; width:86px" %)BOOT MODE|(% style="background-color:#f2f2f2; width:84px" %) |(% style="background-color:#f2f2f2; width:322px" %)Configure device in working mode or ISP program mode|(% style="background-color:#f2f2f2; width:296px" %)(((
198 (((
199 Flash: Normal Working mode and send AT Commands
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201
202 (((
203 ISP: UART Program Mode
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205 )))
206 |(% style="background-color:#f2f2f2; width:44px" %)30|(% style="background-color:#f2f2f2; width:86px" %)NRST|(% style="background-color:#f2f2f2; width:84px" %)In|(% style="background-color:#f2f2f2; width:322px" %)Reset MCU|(% style="background-color:#f2f2f2; width:296px" %)
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208 (% style="display:none" %)
209
210
211
212 === 1.5.1 Jumper JP2 ===
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214
215 Power on Device when put this jumper.
216
217
218 === 1.5.2 BOOT MODE / SW1 ===
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220
221 (((
222 ~1. ISP:  upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
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225 (((
226 2. Flash:  work mode, device starts to work and send out console output for further debug
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228
229
230 === 1.5.3 Reset Button ===
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232
233 Press to reboot the device.
234
235
236 === 1.5.4 LED ===
237
238
239 It will flash:
240
241 ~1. When boot the device in flash mode
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243 2. Send an uplink packet
244
245
246 == 1.6  Hardware Change log ==
247
248
249 (% style="color:red" %)**Note: Hardware version is marked in the PCB.**
250
251
252 (% style="color:#4472c4" %)**LSN50 v2.1:**
253
254 1. Change R14 to 1M ohm
255 1. Change R3, R4 to 4.7Kohm. So no need to modify them for 3 DS18B20 connection.
256 1. Add ESD to each I/O
257
258 (% style="color:#4472c4" %)**LSN50 v2.0:**
259
260 * Change to a new enclosure. Improve with external antenna, IP66, ear hook.
261
262 (% style="color:#4472c4" %)**LSN50 v1.3**:
263
264 * Add P-MOS to control 5V output
265
266 (% style="color:#4472c4" %)**LSN50 v1.2**:
267
268 * Add LED. Turn on for every LoRa transmit
269 * Add pin PA4, PB13, NRST
270 * Add 5V Output, on/off control by PB5(Low to Enable, High to Disable)
271
272
273 == 1.7  Hole Option ==
274
275
276 The LSN50 provides different hole size options for different size sensor cable. The options provided are M12, M16 and M20. The definition is as below:
277
278 [[image:image-20220627104757-1.png]]
279
280
281 [[image:1656298089706-973.png]]
282
283
284 = 2.  Use LSN50 with LoRaWAN firmware =
285
286 == 2.1  How it works ==
287
288
289 (((
290 (((
291 The LSN50 is pre-loaded with a firmware and is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you just need to input the OTAA keys in the LoRaWAN IoT server and power on the LSN50. It will automatically join the network via OTAA.
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293
294 (((
295
296 )))
297
298 (((
299 The diagram below shows the working flow in default firmware (ver 1.8.0): 
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301
302 )))
303
304 [[image:image-20220823174408-9.png||height="890" width="657"]]
305
306
307 (((
308 In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands>>||anchor="H3.A0UsingtheATCommands"]] to set the keys in the LSN50.
309 )))
310 )))
311
312
313 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
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315
316 (((
317 Following is an example for how to join the [[TTN V3 LoRaWAN Network>>url:http://www.thethingsnetwork.org/]]. Below is the network structure; we use the [[LG308>>url:http://www.dragino.com/products/lora/item/140-lg308.html]] as a LoRaWAN gateway in this example. 
318
319
320 (% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:1655891470063-521.png]](% title="Click and drag to resize" %)​[[image:1656298385089-555.png]]
321
322
323 )))
324
325 (% _mstmutation="1" title="Click and drag to resize" %)​(%%)The LG308 is already set to connected to [[TTN V3 network >>url:https://www.thethingsnetwork.org/||_mstmutation="1"]], so what we need to now is configure the TTN V3 server.(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)​(%%)​
326
327 (((
328
329
330 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LSN50.
331
332 Each LSN50 is shipped with a sticker with the default device EUI as below:
333 )))
334
335 (((
336 [[image:image-20230425173445-3.png||height="250" width="538"]]
337 )))
338
339 (% title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)​(%%)​
340
341 (((
342 (((
343 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
344 )))
345
346 (((
347 **Register the device：**
348 )))
349 )))
350
351 (% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% title="Click and drag to resize" %)​(% _mstaria-label="795587" aria-label="1654935135620-998.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654935135620-998.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](%%)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% title="Click and drag to resize" %)​​
352
353 (% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% title="Click and drag to resize" %)​
354
355
356 **Add APP EUI and DEV EUI：**
357
358
359 (% _mstaria-label="1002404" aria-label="image-20220611161308-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220611161308-4.png||data-widget="image" height="551" width="753"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
360
361
362
363 **Add APP EUI in the application：**
364
365
366 (% _mstaria-label="1002768" aria-label="image-20220611161308-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220611161308-5.png||data-widget="image" height="601" width="742"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
367
368
369 **Add APP KEY**
370
371 (% _mstaria-label="1003132" aria-label="image-20220611161308-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220611161308-6.png||data-widget="image" height="485" width="744"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
372
373 (% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​
374
375 (% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)​(%%)​
376
377 (% style="color:blue" %)**Step 2**(%%)**:** Power on LSN50
378
379
380 Put a Jumper on JP2 to power on the device.(% style="display:none" %)
381
382 [[image:image-20220627145643-5.png]](% style="display:none" %)
383
384 (% style="display:none" %)
385
386
387 **For LSn50v2:**
388
389 [[image:1656313034748-905.png]](% style="display:none" %)
390
391
392 (% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(%%)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)​(%%)​
393
394 (((
395 (((
396 (% style="color:blue" %)**Step 3**(%%)**:**  The LSN50 will auto join to the TTN V3 network. After join success, it will start to upload messages to TTN V3 and you can see the messages in the panel.
397
398
399 )))
400 )))
401
402 (% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% title="Click and drag to resize" %)​[[image:1656312908855-552.png]]
403
404
405 (% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
406
407 (% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% _mstaria-label="548795" aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​
408
409 == 2.3  ​Working Mode & Uplink Payload ==
410
411
412 (((
413 LSN50 has different working mode for the connections of different type of sensors. This section describes these modes. Use can use the AT Command AT+MOD to set LSN50 to different working modes.
414 )))
415
416 (((
417 For example:
418 )))
419
420 (((
421 (% _mstmutation="1" style="color:red" %)**AT+MOD=2  **(%%) ~/~/ will set the LSN50 to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.
422 )))
423
424 (((
425
426 )))
427
428 (((
429 (% style="color:red" %)**NOTE:**
430 )))
431
432 (((
433 ~1. Some working modes has payload more than 12 bytes, The US915/AU915/AS923 frequency bands' definition has maximum 11 bytes in **DR0**. Server sides will see NULL payload while LSn50 transmit in DR0 with 12 bytes payload.
434
435 2. All modes share the same Payload Explanation from HERE.
436
437 3. By default, the device will send an uplink message every 5 minutes.
438 )))
439
440
441 === 2.3.1  MOD~=1 (Default Mode) ===
442
443
444 (((
445 In this mode, uplink payload includes in total 11 bytes. Uplink packets use FPORT=2.
446
447
448 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
449 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:30px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:30px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**2**
450 |**Value**|Bat|Temperature(DS18B20)|ADC|Digital in & Digital Interrupt|Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor|Humidity（SHT20)
451
452 [[image:image-20220627150949-6.png]]
453 )))
454
455
456 === 2.3.2 MOD~=2 (Distance Mode) ===
457
458
459 This mode is target to measure the distance. The payload of this mode is totally 11 bytes. The 8^^th^^ and 9^^th^^ bytes is for the distance.
460
461 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
462 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:30px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**2**
463 |**Value**|BAT|(((
464 Temperature(DS18B20)
465 )))|ADC|Digital in & Digital Interrupt|(((
466 Distance measure by:
467 1) LIDAR-Lite V3HP
468 Or
469 2) Ultrasonic Sensor
470 )))|Reserved
471
472 [[image:1656324539647-568.png]]
473
474
475
476 (% style="color:red" %)**Connection of LIDAR-Lite V3HP:**
477
478
479 [[image:1656324581381-162.png]]
480
481
482
483 (% style="color:red" %)**Connection to Ultrasonic Sensor:**
484
485
486 [[image:1656324598488-204.png]]
487
488
489 For the connection to TF-Mini or TF-Luna , MOD2 payload is as below:
490
491 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
492 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:35px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:35px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**
493 |**Value**|BAT|(% style="width:102px" %)(((
494 Temperature(DS18B20)
495 )))|(% style="width:145px" %)Digital in & Digital Interrupt|ADC|(((
496 Distance measure by:1)TF-Mini plus LiDAR
497 Or 
498 2) TF-Luna LiDAR
499 )))|Distance signal  strength
500
501 [[image:1656376779088-686.png]]
502
503
504
505 (% style="color:red" %)**Connection to [[TF-Mini plus>>url:http://en.benewake.com/product/detail/5c345cd0e5b3a844c472329b.html]] LiDAR(UART version):**
506
507
508 Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
509
510
511 [[image:1656376795715-436.png]]
512
513
514
515 (% style="color:red" %)**Connection to [[TF-Luna>>url:http://en.benewake.com/product/detail/5e1c1fd04d839408076b6255.html]] LiDAR (UART version):**
516
517
518 Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
519
520
521 [[image:1656376865561-355.png]]
522
523
524 (((
525 Please use firmware version > 1.6.5 when use MOD=2, in this firmware version, user can use LSn50 v1 to power the ultrasonic sensor directly and with low power consumption.
526 )))
527
528
529 === 2.3.3 MOD~=3 (3 ADC + I2C) ===
530
531
532 This mode has total 12 bytes. Include 3 x ADC + 1x I2C
533
534 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:520px" %)
535 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
536 **Size(bytes)**
537 )))|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)2|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)2|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)1
538 |(% style="width:97px" %)**Value**|(% style="width:46px" %)ADC(Pin PA0)|(% style="width:123px" %)ADC2(PA1)|(% style="width:108px" %)ADC3 (PA4)|(% style="width:133px" %)(((
539 Digital in(PA12)&Digital Interrupt1(PB14)
540 )))|(% style="width:151px" %)Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor）|(% style="width:131px" %)Humidity（SHT20 or SHT31)|(% style="width:66px" %)Bat
541
542 [[image:1656377431497-975.png]]
543
544
545 === 2.3.4 MOD~=4 (3 x DS18B20) ===
546
547
548 This mode is supported in firmware version since v1.6.1. Software set to AT+MOD=4
549
550 Hardware connection is as below,
551
552 (% style="color:red" %)**( Note:**
553
554 * In hardware version v1.x and v2.0 , R3 & R4 should change from 10k to 4.7k ohm to support the other 2 x DS18B20 probes.
555 * In hardware version v2.1 no need to change R3 , R4, by default, they are 4.7k ohm already.
556
557 See [[here>>||anchor="H1.6A0HardwareChangelog" _mstmutation="1"]] for hardware changelog. (% style="color:red" %)**) **
558
559 [[image:1656377461619-156.png]]
560
561
562 This mode has total 11 bytes. As shown below:
563
564 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
565 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:30px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**2**
566 |**Value**|BAT|(((
567 Temperature1
568 (DS18B20)
569 (PB3)
570 )))|ADC|Digital in & Digital Interrupt|Temperature2
571 (DS18B20)
572 (PA9)|Temperature3
573 (DS18B20)
574 (PA10)
575
576 [[image:1656377606181-607.png]]
577
578
579 === 2.3.5 MOD~=5(Weight Measurement by HX711) ===
580
581
582 (((
583 This mode is supported in firmware version since v1.6.2. Please use v1.6.5 firmware version so user no need to use extra LDO for connection.
584
585
586 )))
587
588 [[image:1656378224664-860.png]]
589
590
591 Each HX711 need to be calibrated before used. User need to do below two steps:
592
593 1. Zero calibration. Don't put anything on load cell and run **AT+WEIGRE** to calibrate to Zero gram.
594 1. Adjust calibration factor (default value 400): Put a known weight thing on load cell and run **AT+WEIGAP** to adjust the Calibration Factor.
595 1. (((
596 Remove the limit of plus or minus 5Kg in mode 5, and expand from 2 bytes to 4 bytes（Since its maximum number of bytes is 4 bytes with positive and negative
597 So its maximum weight is 2,147,483,647）, the unit is g.(Since v1.8.0)
598 )))
599
600 For example:
601
602 (% style="color:#4472c4" %)**AT+WEIGAP =403.0**
603
604 Response:  Weight is 401 g
605
606
607 Check the response of this command and adjust the value to match the real value for thing.
608
609 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:490px" %)
610 |=(% style="width: 60px;background-color:#D9E2F3" %)(((
611 **Size(bytes)**
612 )))|=(% style="width: 30px;background-color:#D9E2F3" %)**2**|=(% style="width: 110px;background-color:#D9E2F3" %)**2**|=(% style="width: 60px;background-color:#D9E2F3" %)**2**|=(% style="width: 130px;background-color:#D9E2F3" %)**1**|=(% style="width: 50px;background-color:#D9E2F3" %)**4**|=(% style="width: 50px;background-color:#D9E2F3" %)2
613 |(% style="width:97px" %)**Value**|(% style="width:40px" %)[[Bat>>||anchor="H2.4.1BatteryInfo"]]|(% style="width:110px" %)[[Temperature(DS18B20)>>||anchor="H2.4.2Temperature28DS18B2029"]]|(% style="width:30px" %)[[ADC>>||anchor="H2.4.4AnalogueDigitalConverter28ADC29"]]|(% style="width:120px" %)[[Digital Input and Digitak Interrupt>>||anchor="H2.4.3DigitalInput"]]|(% style="width:40px" %)Weight|(% style="width:40px" %)Reserved
614
615 [[image:image-20220820120036-2.png||height="469" width="1003"]]
616
617
618 === 2.3.6 MOD~=6 (Counting Mode, Since firmware v1.6.5) ===
619
620
621 (((
622 In this mode, the device will work in counting mode. It counts the interrupt on the interrupt pins and sends the count on TDC time.
623 )))
624
625 (((
626 Connection is as below. The PIR sensor is a count sensor, it will generate interrupt when people come close or go away. User can replace the PIR sensor with other counting sensors.
627 )))
628
629
630 [[image:1656378351863-572.png]]
631
632
633 (((
634 (% style="color:red" %)**Note:**(%%) LoRaWAN wireless transmission will infect the PIR sensor. Which cause the counting value increase +1 for every uplink. User can change PIR sensor or put sensor away of the LSN50 to avoid this happen.
635
636 Power loss or restart will reset the count
637 )))
638
639
640 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:390px" %)
641 |=(% style="width: 60px;background-color:#D9E2F3" %)**Size(bytes)**|=(% style="width: 50px;background-color:#D9E2F3" %)**2**|=(% style="width: 110px;background-color:#D9E2F3" %)**2**|=(% style="width: 50px;background-color:#D9E2F3" %)**2**|=(% style="width: 70px;background-color:#D9E2F3" %)**1**|=(% style="width: 50px;background-color:#D9E2F3" %)**4**
642 |(% style="width:80px" %)**Value**|(% style="width:44px" %)[[BAT>>||anchor="H2.4.1BatteryInfo"]]|(% style="width:172px" %)(((
643 [[Temperature(DS18B20)>>||anchor="H2.4.2Temperature28DS18B2029"]]
644 )))|(% style="width:51px" %)[[ADC>>||anchor="H2.4.4AnalogueDigitalConverter28ADC29"]]|(% style="width:206px" %)[[Digital in>>||anchor="H2.4.3DigitalInput"]]|(% style="width:72px" %)Count
645
646 [[image:1656378441509-171.png]]
647
648
649 === 2.3.7  MOD~=7 Three interrupt contact modes (the hardware version needs to support three interrupt versions, Since firmware v1.8.0) ===
650
651
652 [[image:image-20220820140109-3.png]]
653
654
655 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:490px" %)
656 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
657 **Size(bytes)**
658 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)1|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)2
659 |(% style="width:97px" %)**Value**|(% style="width:46px" %)BAT|(% style="width:123px" %)Temperature(DS18B20)|(% style="width:108px" %)ADC|(% style="width:133px" %)(((
660 Digital in(PA12)&Digital Interrupt1(PB14)
661 )))|(% style="width:159px" %)Digital Interrupt2(PB15)|(% style="width:159px" %)Digital Interrupt3(PA4)|(% style="width:159px" %)Reserved
662
663
664 === 2.3.8  MOD~=8 （3ADC+1DS18B20, Since firmware v1.8.0） ===
665
666
667 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:470px" %)
668 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
669 **Size(bytes)**
670 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)2
671 |(% style="width:97px" %)**Value**|(% style="width:46px" %)BAT|(% style="width:123px" %)Temperature(DS18B20)|(% style="width:108px" %)(((
672 ADC1(PA0)
673 )))|(% style="width:133px" %)(((
674 Digital in
675 & Digital Interrupt(PB14)
676 )))|(% style="width:159px" %)(((
677 ADC2(PA1)
678 )))|(% style="width:159px" %)(((
679 ADC3(PA4)
680 )))
681
682 [[image:image-20220823164903-2.png]]
683
684
685 === 2.3.9  MOD~=9 3DS18B20+ two Interrupt count mode (the hardware version needs to support 3 interrupt versions, Since firmware v1.8.0) ===
686
687
688 (% style="color:red" %)**Note:**(%%) Power loss or restart will reset the count
689
690 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:520px" %)
691 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
692 **Size(bytes)**
693 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)4|=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)4
694 |(% style="width:97px" %)**Value**|(% style="width:46px" %)BAT|(% style="width:123px" %)(((
695 Temperature1(PB3)
696 )))|(% style="width:108px" %)(((
697 Temperature2(PA9)
698 )))|(% style="width:133px" %)(((
699 Digital in
700 & Digital Interrupt(PA4)
701 )))|(% style="width:159px" %)(((
702 Temperature3(PA10)
703 )))|(% style="width:159px" %)(((
704 Count1(PB14)
705 )))|(% style="width:159px" %)(((
706 Count2(PB15)
707 )))
708
709 (% class="wikigeneratedid" id="H" %)
710 [[image:image-20220823165322-3.png]]
711
712
713 (% style="color:blue" %)**The newly added AT command is issued correspondingly:**
714
715 (% style="color:#4472c4" %)** AT+INTMOD1**(%%) (% style="background-color:yellow" %)** PB14**(%%)  pin：  Corresponding downlink:  (% style="background-color:yellow" %)**06 00 00 xx**
716
717 (% style="color:#4472c4" %)** AT+INTMOD2**(%%)  (% style="background-color:yellow" %)**PB15**(%%) pin：  Corresponding downlink:**  (% style="background-color:yellow" %)06 00 01 xx(%%)**
718
719 (% style="color:#4472c4" %)** AT+INTMOD3** (%%) (% style="background-color:yellow" %)**PA4** (%%) pin：  Corresponding downlink:  ** (% style="background-color:yellow" %)06 00 02 xx(%%)**
720
721
722 (% style="color:blue" %)**AT+SETCNT=aa,bb** 
723
724 When AA is 1, set the count of PB14 pin to BB Corresponding downlink：09 01 bb bb bb bb
725
726 When AA is 2, set the count of PB15 pin to BB Corresponding downlink：09 02 bb bb bb bb
727
728
729 === 2.3.10  ​Decode payload in The Things Network ===
730
731
732 While using TTN V3 network, you can add the payload format to decode the payload.
733
734
735 [[image:1656378466788-734.png]]
736
737
738 (((
739 The payload decoder function for TTN V3 are here:
740 )))
741
742 (((
743 LSN50 TTN V3 Payload Decoder:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
744 )))
745
746
747 == 2.4 Payload Explanation and Sensor Interface ==
748
749 === 2.4.1 Battery Info ===
750
751
752 (((
753 Check the battery voltage for LSN50.
754 )))
755
756 (((
757 Ex1: 0x0B45 = 2885mV
758 )))
759
760 (((
761 Ex2: 0x0B49 = 2889mV
762 )))
763
764
765 === 2.4.2 Temperature (DS18B20) ===
766
767
768 If there is a DS18B20 connected to PB3 pin. The temperature will be uploaded in the payload.
769
770 More DS18B20 can check the [[3 DS18B20 mode>>||anchor="2.3.4MOD3D4283xDS18B2029"]]
771
772
773 (% style="color:#4472c4" %)**Connection:**
774
775 [[image:1656378573379-646.png]]
776
777
778 (% style="color:#4472c4" %)**Example**:
779
780 If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
781
782 If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
783
784 （FF3F & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
785
786
787 === 2.4.3 Digital Input ===
788
789
790 The digital input for pin PA12,
791
792 * When PA12 is high, the bit 1 of payload byte 6 is 1.
793 * When PA12 is low, the bit 1 of payload byte 6 is 0.
794
795
796 === 2.4.4 Analogue Digital Converter (ADC) ===
797
798
799 (((
800 The ADC pins in LSN50 can measure range from 0~~Vbat, it use reference voltage from STM32. If user need to measure a voltage > VBat, please use resistors to divide this voltage to lower than VBat, otherwise, it may destroy the ADC pin.
801
802 Note: minimum VBat is 2.5v, when batrrey lower than this value. Device won't be able to send LoRa Uplink.
803 )))
804
805
806 (((
807 The ADC monitors the voltage on the PA0 line, in mV.
808 )))
809
810 (((
811 Ex: 0x021F = 543mv,
812 )))
813
814
815 (((
816 (% style="color:#4472c4" %)** Example1:** (%%) Reading an Oil Sensor (Read a resistance value):
817
818
819 )))
820
821 [[image:image-20220627172409-28.png]]
822
823
824 In the LSN50, we can use PB4 and PA0 pin to calculate the resistance for the oil sensor.
825
826
827 (% style="color:blue" %)**Steps:**
828
829 1. Solder a 10K resistor between PA0 and VCC.
830 1. Screw oil sensor's two pins to PA0 and PB4.
831
832 The equipment circuit is as below:
833
834
835 [[image:image-20220627172500-29.png]]
836
837
838 According to above diagram:
839
840 [[image:image-20220628091043-4.png]]
841
842 So
843
844 [[image:image-20220628091344-6.png]]
845
846
847 [[image:image-20220628091621-8.png]] is the reading of ADC. So if ADC=0x05DC=0.9 v and VCC (BAT) is 2.9v
848
849
850 The [[image:image-20220628091702-9.png]] 4.5K ohm
851
852 Since the Bouy is linear resistance from 10 ~~ 70cm.
853
854
855 The position of Bouy is [[image:image-20220628091824-10.png]] , from the bottom of Bouy.
856
857
858 === 2.4.5 Digital Interrupt ===
859
860
861 Digital Interrupt refers to pin PB14, and there are different trigger methods. When there is a trigger, the LSN50 will send a packet to the server.
862
863
864 (((
865 (% style="color:#4472c4" %)** Interrupt connection method:**
866 )))
867
868 [[image:1656379178634-321.png]]
869
870
871 (((
872 (% style="color:#4472c4" %)**Example to use with door sensor : (Requires firmware > 1.5.1)**
873 )))
874
875
876 (((
877 The door sensor is shown at right. It is a two wire magnetic contact switch used for detecting the open/close status of doors or windows.
878 )))
879
880 [[image:1656379210849-860.png]]
881
882
883 (((
884 When the two pieces are close to each other, the 2 wire output will be short or open (depending on the type), while if the two pieces are away from each other, the 2 wire output will be the opposite status. So we can use LSN50 interrupt interface to detect the status for the door or window.
885 )))
886
887
888 (((
889 (% style="color:#4472c4" %)** Below is the installation example:**
890 )))
891
892 (((
893 Fix one piece of the magnetic sensor to the door and connect the two pins to LSN50 as follows:
894 )))
895
896 * (((
897 One pin to LSN50's PB14 pin
898 )))
899 * (((
900 The other pin to LSN50's VCC pin
901 )))
902
903 (((
904 Install the other piece to the door. Find a place where the two pieces will be close to each other when the door is closed. For this particular magnetic sensor, when the door is closed, the output will be short, and PB14 will be at the VCC voltage.
905 )))
906
907
908 (((
909 Door sensors have two types: ** (% style="color:#4472c4" %)NC (Normal close)(%%)** and (% style="color:#4472c4" %)**NO (normal open)**(%%). The connection for both type sensors are the same. But the decoding for payload are reverse, user need to modify this in the IoT Server decoder.
910 )))
911
912 (((
913 When door sensor is shorted, there will extra power consumption in the circuit, the extra current is 3v3/R14 = 3v2/1Mohm = 0.3uA which can be ignored.
914 )))
915
916
917 [[image:1656379283019-229.png]]
918
919
920 (((
921 The above photos shows the two parts of the magnetic switch fitted to a door.
922 )))
923
924 (((
925 (((
926 The software by default uses the falling edge on the signal line as an interrupt. We need to modify it to accept both the rising edge (0v ~-~-> VCC , door close) and the falling edge (VCC ~-~-> 0v , door open) as the interrupt.
927 )))
928 )))
929
930
931 (((
932 The command is:
933 )))
934
935 (((
936 (% _mstmutation="1" style="color:blue" %)**AT+INTMOD=1 **(% _mstmutation="1" %)** **(%%)~/~/(more info about INMOD please refer(% _mstmutation="1" %)** **(%%)[[**AT Command Manual**>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/&file=DRAGINO_LSN50_AT_Commands_v1.5.1.pdf||_mstmutation="1"]](% _mstmutation="1" %)**. **(%%))
937 )))
938
939
940 (((
941 Below shows some screen captures in TTN V3:
942 )))
943
944
945 [[image:1656379339508-835.png]]
946
947
948 In MOD=1, user can use byte 6 to see the status for door open or close. TTN V3 decoder is as below:
949
950 (% style="background-color:#dcdcdc" %)door= (bytes[6] & 0x80)? "CLOSE":"OPEN";
951
952
953 (% style="color:red" %)**Notice for hardware version LSN50 v1 < v1.3**(%%) (produced before 2018-Nov).
954
955 In this hardware version, there is no R14 resistance solder. When use the latest firmware, it should set AT+INTMOD=0 to close the interrupt. If user need to use Interrupt in this hardware version, user need to solder R14 with 10M resistor and C1 (0.1uF) on board.
956
957 [[image:1656379563303-771.png]]
958
959
960 === 2.4.6 I2C Interface (SHT20) ===
961
962
963 (((
964 The PB6(SCL) and PB7(SDA) are I2C interface lines. You can use these to connect to an I2C device and get the sensor data.
965 )))
966
967 (((
968 We have made an example to show how to use the I2C interface to connect to the SHT20 Temperature and Humidity Sensor. This is supported in the stock firmware since v1.5 with (% style="color:#4472c4" %)**AT+MOD=1 (default value).**
969
970 (% style="color:red" %)**Notice: Different I2C sensors have different I2C commands set and initiate process, if user want to use other I2C sensors, User need to re-write the source code to support those sensors. SHT20 code in LSN50 will be a good reference.**
971 )))
972
973 (((
974 Below is the connection to SHT20/ SHT31. The connection is as below:
975 )))
976
977
978 [[image:image-20220902163605-2.png]]
979
980
981 The device will be able to get the I2C sensor data now and upload to IoT Server.
982
983
984 [[image:1656379664142-345.png]]
985
986 Convert the read byte to decimal and divide it by ten.
987
988
989 (% style="color:blue" %)**Example:**
990
991 Temperature:  Read:0116(H) = 278(D)  Value:  278 /10=27.8℃;
992
993 Humidity:    Read:0248(H)=584(D)  Value:  584 / 10=58.4, So 58.4%
994
995
996 If you want to use other I2C device, please refer the SHT20 part source code as reference.
997
998
999 === 2.4.7 ​Distance Reading ===
1000
1001
1002 Refer [[Ultrasonic Sensor section>>||anchor="H2.4.8UltrasonicSensor"]].
1003
1004
1005 === 2.4.8 Ultrasonic Sensor ===
1006
1007
1008 (((
1009 The LSN50 v1.5 firmware supports ultrasonic sensor (with AT+MOD=2) such as SEN0208 from DF-Robot. This Fundamental Principles of this sensor can be found at this link: [[https:~~/~~/wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU~~_~~__SEN0208>>url:https://wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU___SEN0208]]
1010 )))
1011
1012
1013 (((
1014 The LSN50 detects the pulse width of the sensor and converts it to mm output. The accuracy will be within 1 centimeter. The usable range (the distance between the ultrasonic probe and the measured object) is between 24cm and 600cm.
1015 )))
1016
1017
1018 (((
1019 The picture below shows the connection:
1020 )))
1021
1022 [[image:1656380061365-178.png]]
1023
1024
1025 Connect to the LSN50 and run (% style="color:blue" %)**AT+MOD=2**(%%) to switch to ultrasonic mode (ULT).
1026
1027 The ultrasonic sensor uses the 8^^th^^ and 9^^th^^ byte for the measurement value.
1028
1029
1030 (% style="color:blue" %)**Example:**
1031
1032 Distance:  Read: 0C2D(Hex) = 3117(D)  Value:  3117 mm=311.7 cm
1033
1034
1035 [[image:1656384895430-327.png]]
1036
1037
1038 [[image:1656384913616-455.png]]
1039
1040
1041 You can see the serial output in ULT mode as below:
1042
1043 [[image:1656384939855-223.png]]
1044
1045
1046 **In TTN V3 server:**
1047
1048
1049 [[image:1656384961830-307.png]]
1050
1051
1052 [[image:1656384973646-598.png]]
1053
1054
1055 === 2.4.9  Battery Output - VDD pin ===
1056
1057
1058 The VDD pin of LSN50v2 is connected to the Battery directly. If users want to use VDD pin to power an external sensor. User need to make sure the external sensor is of low power consumption. Because the VDD pin is always open. If the external sensor is of high power consumption. the battery of LSN50v2 will run out very soon.
1059
1060
1061 === 2.4.10  +5V Output ===
1062
1063
1064 Since v1.2 hardware version, a +5v output is added in the hardware. The +5V output will be valid for every sampling.  LSN50 will enable +5V output before all sampling and disable the +5v after all sampling. 
1065
1066
1067 (((
1068 Since firmware (% style="color:red" %)**v1.6.3**(%%), The 5V output time can be controlled by AT Command.
1069 )))
1070
1071 (((
1072 (% style="color:#4472c4" %)**AT+5VT=1000**
1073 )))
1074
1075 (((
1076 Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.
1077 )))
1078
1079
1080 (((
1081 By default the AT+5VT=500. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
1082 )))
1083
1084
1085 === 2.4.11  Weigh Sensor HX711 ===
1086
1087
1088 Since v1.6.2 firmware, LSN50 support Weigh Sensor HX711.
1089
1090
1091 === 2.4.12  BH1750 Illumination Sensor ===
1092
1093
1094 Since v1.7.0 firmware, MOD=1 support this sensor. The sensor value is in the 8^^th^^ and 9^^th^^ bytes.
1095
1096
1097 [[image:image-20220628110012-11.jpeg]]
1098
1099
1100 [[image:image-20220628110012-12.png]]
1101
1102
1103 === 2.4.13  Working MOD ===
1104
1105
1106 (((
1107 The working MOD info is contained in the Digital in & Digital Interrupt byte (7^^th^^ Byte).
1108 )))
1109
1110 (((
1111 User can use the 3^^rd^^ ~~ 7^^th^^  bit of this byte to see the working mod:
1112 )))
1113
1114 (((
1115 Case 7^^th^^ Byte >> 2 & 0x1f:
1116 )))
1117
1118 * 0: MOD1
1119 * 1: MOD2
1120 * 2: MOD3
1121 * 3: MOD4
1122 * 4: MOD5
1123 * 5: MOD6
1124
1125
1126 == 2.5 Configure LSN50 via AT or Downlink ==
1127
1128
1129 (((
1130 User can configure LSN50 via [[AT Commands >>||anchor="H3.A0UsingtheATCommands"]]or LoRaWAN Downlink Commands
1131 )))
1132
1133 (((
1134 There are two kinds of Commands:
1135 )))
1136
1137 * (% _mstmutation="1" style="color:blue" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.7.0, user can find what common commands it supports:  [[End Device AT Commands>>doc:Main.End Device AT Commands and Downlink Command.WebHome||_mstmutation="1"]]
1138
1139 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LSN50.  User can see these commands below:
1140
1141 === 2.5.1 Common Commands: ===
1142
1143
1144 They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.7.0, user can find what common commands it supports: [[End Device AT Commands>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
1145
1146
1147 === 2.5.2 Sensor related commands: ===
1148
1149
1150 (% style="color:blue" %)**Set work mode:**
1151
1152 * (% style="color:#037691" %)**AT Command:**
1153
1154 (((
1155 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+MOD=2 **(%%) ~/~/ Set work MOD =2. (1: IIC mode, 2: Distance mode, 3: 3ADC mode, 4: 3DS18B20 mode, 5: weight mode)
1156 )))
1157
1158 (((
1159 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+MOD=?** (%%) ~/~/  Get current work MOD
1160 )))
1161
1162
1163 * (% style="color:#037691" %)**Downlink Payload:**
1164
1165 (% style="background-color:#dcdcdc" %)**0x0A aa** (%%) ~/~/ Same as AT+MOD=aa
1166
1167
1168
1169 (% style="color:blue" %)**Set the trigger interrupt mode:**
1170
1171 * (% style="color:#037691" %)**AT Command:**
1172
1173 (((
1174 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+INTMOD=2**  (%%) ~/~/ Set INTMOD =2. (0: Disable, 1:falling or rising, 2: falling, 3: rising)
1175 )))
1176
1177 (((
1178 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+INTMOD=?**  (%%) ~/~/  Get current INTMOD
1179 )))
1180
1181
1182 * (% style="color:#037691" %)**Downlink Payload:**
1183
1184 (% style="background-color:#dcdcdc" %)**0x06 000003**      (%%) ~/~/ Set AT+INTMOD=3
1185
1186
1187
1188 (% style="color:blue" %)**Set the 5V power open time during sampling:**
1189
1190 * (% style="color:#037691" %)**AT Command:**
1191
1192 (((
1193 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+5VT=1000** (%%) ~/~/ Set 5v open time to 1000ms
1194 )))
1195
1196 (((
1197 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+5VT=?**    (%%) ~/~/  Check current 5v open duration
1198 )))
1199
1200
1201 * (% style="color:#037691" %)**Downlink Payload:**
1202
1203 (% style="background-color:#dcdcdc" %)**0x07 aa bb**    (%%) ~/~/ Equal AT+5VT=0x(aa bb)
1204
1205
1206
1207 (% style="color:blue" %)**Set the weight to 0g (Zero Calibration)：**
1208
1209 * (% style="color:#037691" %)**AT Command:**
1210
1211 (% style="background-color:#dcdcdc" %)**AT+WEIGRE** ** **(%%)** **~/~/ Set the weight to 0g
1212
1213
1214 * (% style="color:#037691" %)**Downlink Payload:**
1215
1216 (% style="background-color:#dcdcdc" %)**0x08 01** (%%) ~/~/ Set the weight to 0g
1217
1218
1219
1220 (% style="color:blue" %)**Get or Set the GAP Value (calibrate factor) of measurement：**
1221
1222 * (% style="color:#037691" %)**AT Command:**
1223
1224 (((
1225 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+WEIGAP=403.0**  (%%) ~/~/ Set GAP Value =403.0 (response: Weight: xx g)
1226 )))
1227
1228 (((
1229 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+WEIGAP=?**  (%%) ~/~/  Get current GAP Value
1230 )))
1231
1232
1233 * (% style="color:#037691" %)**Downlink Payload:**
1234
1235 (% style="background-color:#dcdcdc" %)**0x08 02 aa bb** (%%) ~/~/ Equal to AT+WEIGAP=0x(aa bb)/10
1236
1237
1238
1239 (% style="color:blue" %)**Encrypt upload：**
1240
1241 * (% style="color:#037691" %)**AT Command:**
1242
1243 (((
1244 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+DECRYPT=1**  (%%) ~/~/ The payload is uploaded without encryption
1245 )))
1246
1247 (((
1248 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+DECRYPT=0**  (%%) ~/~/  Encrypt when uploading payload (default)
1249 )))
1250
1251
1252
1253 (% style="color:blue" %)**Get data：**
1254
1255 * (% style="color:#037691" %)**AT Command:**
1256
1257 (((
1258 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+GETSENSORVALUE=0** (%%) ~/~/ The serial port gets the reading of the current sensor
1259 )))
1260
1261 (((
1262 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+GETSENSORVALUE=1** (%%) ~/~/  The serial port gets the current sensor reading and uploads it.
1263
1264
1265
1266 (% style="color:blue" %)**Resets the downlink packet count：**
1267
1268 * (% style="color:#037691" %)**AT Command:**
1269
1270 (((
1271 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+DISFCNTCHECK=0**(% _mstmutation="1" %)**     **(%%) ~/~/(% _mstmutation="1" %)** **(%%)When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node will no longer receive downlink packets (default)
1272 )))
1273
1274 (((
1275 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+DISFCNTCHECK=1** (%%) ~/~/  When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node resets the downlink packet count and keeps it consistent with the server downlink packet count
1276 )))
1277
1278
1279
1280 (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches：**
1281
1282 * (% style="color:#037691" %)**AT Command:**
1283
1284 (((
1285 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+DISMACANS=0**(%%)  ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of 11 bytes (DR0 of US915, DR2 of AS923, DR2 of AU195), the node will send a packet with a payload of 00 and a port of 4. (default)
1286 )))
1287
1288 (((
1289 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+DISMACANS=1** (%%) ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of the DR, the node will ignore the MACANS and not reply, and only upload the payload part.
1290 )))
1291
1292 * (% style="color:#037691" %)**Downlink Payload:**
1293
1294 (% class="wikigeneratedid" %)
1295 (% style="background-color:#dcdcdc" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1296
1297
1298
1299 (% style="color:blue" %)**Copy downlink to uplink：**
1300
1301 * (% style="color:#037691" %)**AT Command:**
1302
1303 (((
1304 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+RPL=5**(%%)  ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
1305 )))
1306
1307 (% class="wikigeneratedid" %)
1308 Example：(% style="background-color:#dcdcdc" %)**aa xx xx xx xx** (%%) ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
1309
1310
1311 (% class="wikigeneratedid" %)
1312 [[image:image-20220823173747-6.png||height="165" width="1124"]]
1313
1314 **For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.**
1315
1316
1317
1318 [[image:image-20220823173833-7.png||height="149" width="1124"]]
1319
1320 **For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.**
1321
1322
1323
1324 (% style="color:blue" %)**Query version number and frequency band 、TDC：**
1325
1326 * (((
1327 (% style="color:#037691" %)**Downlink: 26 01  **(%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1328 )))
1329
1330 **Example：**
1331
1332
1333 [[image:image-20220823173929-8.png||height="76" width="1205"]]
1334
1335
1336
1337 (% style="color:blue" %)**Add rejoin feature if device offline：**
1338
1339 * (% style="color:#037691" %)**AT Command:**
1340
1341 **AT+DDETECT=<Flag>,<ACK_Timout_1>,<ACK_Timout_2>    (Default Value: AT+DDETECT=1,1440,2880)**
1342
1343 (% style="color:red" %)**Flag:** (%%) 1 Enable online detect，0: Disable online detect
1344
1345 (% style="color:red" %)**ACK_Timout_1:**(%%) Unit: min
1346
1347 (% style="color:red" %)**ACK_Timout_2:**(%%) Unit: min
1348
1349
1350 **Example: AT+DDETECT=1,1440,2880**
1351
1352 Enable Online Detect, if end node doesn't receive any downlink within ACK_Timout_1( 1440 minutes or 24 hours). End node will use confirmed uplink to send packets during ACK_Timout_1 (the 24th hour) to ACK_Timout_2 ( the 48th hour).
1353
1354 If from the 24th to 48th hour, end node got an downlink from server, it will switch back to unconfirmed uplink. end node will restart ACK_Timout_1.
1355
1356 If from the 24th to 48th hour, end node still not got any downlink, means device doesn't get ACK in 48 hours. Device will process rejoin, rejoin request interval is AT+RJTDC period. For AU915/ US915, device will use the sub-band used for last join.
1357
1358
1359 * (((
1360 (% style="color:#037691" %)**Downlink: 0x32 01 05A0 0B40 **
1361
1362 0x01 : Flag
1363
1364 0x05A0: ACK_Timout_1
1365
1366 0x0B40: ACK_Timout_2
1367
1368
1369
1370 )))
1371
1372 (% class="wikigeneratedid" %)
1373 (% style="color:blue" %)**Add new feature to control NBTrans for unconfirmed uplink mode：**
1374
1375 * (% style="color:#037691" %)**AT Command:**
1376
1377 (% style="background-color:#dcdcdc" %)** AT+SETMAXNBTRANS=value1,value2   **(%%)** **~/~/ NBTrans specified how many re-transmission for each packet. If LoRaWAN LinkADR from server set NBTrans to high value. The battery will consume fast.
1378
1379 **AT+SETMAXNBTRANS=value1,value2 Default Value: AT+SETMAXNBTRANS=1,0**
1380
1381 (% style="color:red" %)**value1:** (%%) Set max NBTrans. For example, if value1(NBTrans)=1, end node set NBTrans max to 1 , even downlink LinkADR request end node to set NBTrans to higher value such as 6.
1382
1383 (% style="color:red" %)**value2:** (%%) 0: uplink fcnt doesn't change for each NBTrans;  1: uplink fcnt increase by 1 for each NBTrans.
1384
1385 set value2 to 1 for Chirpstack server, because Chirpstack will ignore same FCNT in re-transmission.
1386
1387
1388 **Example: AT+SETMAXNBTRANS=2,1**
1389
1390 Set max NBTrans to 2, fcnt will increase +1 for each NBTrans
1391
1392
1393 * (((
1394 (% style="color:#037691" %)**Downlink: 0x33 02 01**
1395
1396 value1=0x02
1397 )))
1398
1399 (% class="wikigeneratedid" %)
1400 value2=0x01
1401
1402
1403 == 2.6 Show Data in Datacake IoT Server ==
1404
1405
1406 (((
1407 Datacake provides a human friendly interface to show the sensor data, once we have data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
1408 )))
1409
1410 (((
1411
1412 )))
1413
1414 (((
1415 (% style="color:blue" %)**Step 1**(%%)**:** Be sure that your device is programmed and properly connected to the network at this time.
1416 )))
1417
1418 (((
1419 (% style="color:blue" %)**Step 2**(%%)**:** To configure the Application to forward data to Datacake you will need to add integration. To add the Datacake integration, perform the following steps:
1420 )))
1421
1422
1423 [[image:1656385623971-339.png]]
1424
1425
1426 [[image:1656385646347-395.png]]
1427
1428
1429 [[image:1656385662459-942.png]]
1430
1431
1432 (% style="color:blue" %)**Step 3**(%%)**: **Create an account or log in Datacake.
1433
1434
1435 (% style="color:blue" %)**Step 4**(%%)**:** Search the LSN50 and add DevEUI.
1436
1437
1438 [[image:1656385688973-317.png]]
1439
1440
1441 == 2.7 ​Firmware Change Log ==
1442
1443
1444 (((
1445 **Firmware download: ** [[https:~~/~~/www.dropbox.com/sh/9k0a6sn8a94dc03/AAD54woDmnmAMUMY2WfKfjxoa?dl=0>>https://www.dropbox.com/sh/9k0a6sn8a94dc03/AAD54woDmnmAMUMY2WfKfjxoa?dl=0]]
1446 )))
1447
1448 (((
1449 **Firmware Change Log: **[[https:~~/~~/www.dropbox.com/sh/9k0a6sn8a94dc03/AAD54woDmnmAMUMY2WfKfjxoa?dl=0>>https://www.dropbox.com/sh/9k0a6sn8a94dc03/AAD54woDmnmAMUMY2WfKfjxoa?dl=0]]
1450
1451
1452 )))
1453
1454 == 2.8 Use VDD or +5V to Power External Sensor ==
1455
1456
1457 (((
1458 User can use VDD or +5V to power external sensor.
1459 )))
1460
1461 (((
1462 (% style="color:red" %)**Note:**
1463 )))
1464
1465 1. (((
1466 VDD is 2.5~~3.3v from the battery + diode, the VDD is always on, so when use VDD to power external sensor, make sure the sensor has a low power consumption in sleep mode ( less 50 uA) to get a long battery life.
1467 )))
1468 1. (((
1469 +5V output is only ON when sampling. And MCU will turn off it after sampling. So if sensor can support 5v, +5V out is the best choice. [[See here for more info>>||anchor="H2.4.10A02B5VOutput"]].
1470 )))
1471
1472 (((
1473 (% style="color:red" %)**Note: Always test the actually current pass by the JP2 jumper when connect to a new type of sensor.**
1474 )))
1475
1476
1477 == 2.9  Battery & Power Consumption ==
1478
1479
1480 LSN50v2 uses ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
1481
1482 [[**Battery Info & Power Consumption Analyze**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
1483
1484
1485 = 3.  Using the AT Commands =
1486
1487 == 3.1  Access AT Commands ==
1488
1489
1490 LSN50 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LSN50 for using AT command, as below.
1491
1492
1493 (% style="color:#4472c4" %)**LSN50 v1 UART connection photo**
1494
1495 [[image:image-20220627165424-24.png||height="495" width="486"]]
1496
1497
1498
1499 (% style="color:#4472c4" %)**LSN50 v2 UART connection photo**
1500
1501 [[image:image-20220627165424-25.png||height="437" width="894"]]
1502
1503
1504 (((
1505 In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LSN50. LSN50 will output system info once power on as below:
1506 )))
1507
1508
1509 [[image:image-20220627165531-26.png||height="624" width="893"]](% style="display:none" %)
1510
1511
1512 == 3.2  Common AT Command Sequence ==
1513
1514 === 3.2.1  Multi-channel ABP mode (Use with SX1301/LG308) ===
1515
1516
1517 (((
1518 (% style="color:#037691" %)**If device has not joined network via OTAA:**
1519 )))
1520
1521 (((
1522 (% style="background-color:#dcdcdc" %)**AT+FDR**
1523 )))
1524
1525 (((
1526 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1527 )))
1528
1529 (((
1530 (% style="background-color:#dcdcdc" %)**ATZ**
1531 )))
1532
1533
1534 (((
1535 (% style="color:#037691" %)**If device already joined network:**
1536 )))
1537
1538 (((
1539 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1540 )))
1541
1542 (((
1543 (% style="background-color:#dcdcdc" %)**ATZ**
1544 )))
1545
1546
1547 === 3.2.2  Single-channel ABP mode (Use with LG01/LG02) ===
1548
1549
1550 See [[Sect 6.7>>||anchor="H6.7A0HowtoconfiguretheEUIkeysinLSN503F"]]
1551
1552
1553 = 4.  Upload Firmware =
1554
1555
1556 (% style="color:red" %)**Notes**:
1557
1558 * Since image v1.3, the firmware will show version info during boot. If your device doesn't show version info, you may have a very old image version.
1559 * Always run AT+FDR to reset parameters to factory default after an update image.
1560 If the update is from image >= v1.3 to another image version >=v1.3, then the keys will be kept after running AT+FDR.
1561 Otherwise (e.g. from v1.2 to v1.3), AT+FDR may erase the keys.
1562
1563
1564 == 4.1  Upload Firmware via Serial Port ==
1565
1566
1567 The LSN50's AT Command port can be used for firmware upgrade. The hardware connection for upgrade firmware is as below:
1568
1569
1570 [[image:image-20220627163506-18.png||height="426" width="418"]]
1571
1572
1573 (% style="color:blue" %)**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]].
1574
1575
1576 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LSN50 Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADnMzn1IN0LssOQNHlvooTta/LSN50%20%26%20LSN50-v2/Firmware/LSN50.hex?dl=0&subfolder_nav_tracking=1]].
1577
1578
1579 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update
1580
1581
1582 [[image:image-20220627163821-19.png]]
1583
1584
1585 [[image:image-20220627163930-20.png||height="450" width="751"]]
1586
1587
1588 [[image:image-20220627164030-21.png||height="459" width="750"]]
1589
1590
1591 (((
1592 (% style="color:blue" %)**Step4**(%%)**: **Switch SW1 back to flash state and push the RESET button.
1593 )))
1594
1595 (((
1596 The LSN50 will then run the new firmware.
1597 )))
1598
1599
1600 == 4.2  Upload Firmware via ST-Link V2 ==
1601
1602
1603 You can use ST-LINK to upgrade firmware into LSN50. The hardware connection for upgrade firmware is as below:
1604
1605
1606 [[image:1656319349131-664.png]]
1607
1608
1609 (% style="color:blue" %)**Connection:**
1610
1611 * (% style="background-color:yellow" %)**ST-LINK v2 GND  <~-~-> LSN50 GND**
1612 * (% style="background-color:yellow" %)**ST-LINK v2 SWCLK <~-~-> LSN50 PA14**
1613 * (% style="background-color:yellow" %)**ST-LINK v2 SWDIO <~-~-> LSN50 PA13**
1614 * (% style="background-color:yellow" %)**ST-LINK v2 RST  <~-~->  LSN50 NRST**
1615
1616 (% style="color:blue" %)**Step1:**(%%) Install [[ST-LINK driver>>url:https://www.stmicroelectronics.com.cn/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-utilities/stsw-link009.html]] first and then install [[ST-LINK Utility>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/stsw-link004.html]]
1617
1618
1619 (% style="color:blue" %)**Step2**(%%): Download the [[LSN50 Image files>>url:https://github.com/dragino/LoRa_STM32/tree/master/LSN50.hex]].
1620
1621
1622 (% style="color:blue" %)**Step3:**(%%)** **Open ST-LINK utility, (% style="color:blue" %)**file ~-~-> open file**(%%) to select the image to be upgraded.
1623
1624
1625 (% style="color:blue" %)**Step4:**(%%)** **Click the “(% style="color:blue" %)**Program Verify**”(%%) button on ST-LINK.
1626
1627
1628 [[image:image-20220627164303-22.png]]
1629
1630
1631 (((
1632 (% style="color:blue" %)**Step5:**(%%)** **The led on the ST-LINK adapter will now blinking, and the ST-Link utility will pop up a download window. Click the start button to download the image to LSN50.
1633 )))
1634
1635 (((
1636 (% style="color:red" %)**NOTE: If this step fails, ST-LINK can't establish connection to LSN50, please try to swap SWDIO & SWCLK pin. Some ST-LINK v2 devices are incorrectly marked.**
1637 )))
1638
1639
1640
1641 [[image:image-20220627164303-23.png]]
1642
1643
1644 = 5.  Developer Guide =
1645
1646
1647 * (((
1648 Software Source Code Download : [[https:~~/~~/github.com/dragino/LoRa_STM32/tree/master/STM32CubeExpansion_LRWAN>>https://github.com/dragino/LoRa_STM32/tree/master/STM32CubeExpansion_LRWAN]]
1649 )))
1650 * (((
1651 Hardware Source Code Download: [[https:~~/~~/github.com/dragino/Lora/tree/master/LSN50>>https://github.com/dragino/Lora/tree/master/LSN50]]
1652 )))
1653
1654 (((
1655 LSN50 is an open source project, developer can use compile their firmware for customized applications. User can get the source code from:
1656 )))
1657
1658 * (((
1659 Software Source Code: [[https:~~/~~/github.com/dragino/LoRa_STM32/tree/master/STM32CubeExpansion_LRWAN>>url:https://github.com/dragino/LoRa_STM32/tree/master/STM32CubeExpansion_LRWAN||_mstmutation="1"]]
1660 )))
1661 * (((
1662 Hardware Design files:  [[https:~~/~~/github.com/dragino/Lora/tree/master/LSN50>>url:https://github.com/dragino/Lora/tree/master/LSN50]]
1663 )))
1664 * (((
1665 Compile instruction:  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Compile%20Instruction%20~~-~~-%20STM32/>>http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Compile%20Instruction%20--%20STM32/]]
1666 )))
1667
1668 (((
1669 Use Keil to open project file:
1670 )))
1671
1672 (((
1673 STM32CubeExpansion_LRWAN/Projects/Multi/Applications/LoRa/DRAGINO-LRWAN(AT)/MDK-ARM/STM32L072CZ-Nucleo/Lora.uvprojx
1674 )))
1675
1676 (((
1677
1678 )))
1679
1680 (((
1681 In Keil, you can see what frequency band the code support.
1682 )))
1683
1684 [[image:image-20220627162417-15.png]]
1685
1686
1687 **~1. If you want to change frequency, modify the Preprocessor Symbols.**
1688
1689
1690 For example, change EU868 to US915
1691
1692 [[image:1656318662202-530.png]]
1693
1694
1695 **2. Compile and build**
1696
1697 [[image:image-20220627163212-17.png]]
1698
1699
1700 = 6.  FAQ =
1701
1702 == 6.1  Why there is 433/868/915 version? ==
1703
1704
1705 (((
1706 Different countries have different rules for the ISM band for LoRa. Although the LoRa chip can support a wide range of Frequencies, we provide different versions of the hardware for best tune of the LoRa hardware part.
1707 )))
1708
1709
1710 == 6.2 What is the frequency range of LT LoRa part? ==
1711
1712
1713 Different LT version supports different frequency range, below is the table for the working frequency and recommend bands for each model:
1714
1715 [[image:image-20220627155456-9.png]]
1716
1717
1718 == 6.3  How to change the LoRa Frequency Bands/Region? ==
1719
1720
1721 You can follow the instructions for [[how to upgrade image>>||anchor="H2.7200BFirmwareChangeLog"]].
1722 When downloading the images, choose the required image file for download.
1723
1724
1725 == 6.4  Can I use Private LoRa protocol? ==
1726
1727
1728 (((
1729 (((
1730 The stock firmware is based on LoRaWAN protocol. You can use a private LoRa protocol in LSN50. This section describes an example for base LoRa transfer. It is a reference/demo and we do not provide further software development support on this topic.
1731 )))
1732
1733 (((
1734 In this demo, we will show the communication between LoRa Shield and LSN50, both of them using the basic LoRa library. LSN50 will send a message to a LoRa Shield and the LoRa Shield will print it to the console.
1735 )))
1736
1737
1738 )))
1739
1740 (% style="color:#4472c4" %)**LoRa Shield + UNO**:
1741
1742 Use the [[LoRa Library>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/LoRa_Raw_Example/Arduino/&file=LoRa.zip]] and upload the [[LoRa Receive>>http://www.dragino.com/downloads/downloads/LSN50-LoRaST/LoRa_Raw_Example/Arduino/LoRaReceiver.ino]] Sketch to Arduino.
1743
1744
1745 Refs:  [[https:~~/~~/www.dropbox.com/sh/u9s41qdx5yujwcb/AAAT5r4QkMaeOogWrzJt7Wn4a?dl=0>>https://www.dropbox.com/sh/u9s41qdx5yujwcb/AAAT5r4QkMaeOogWrzJt7Wn4a?dl=0]]
1746
1747
1748 Open the serial monitor to Arduino. The device acts as a LoRa Receiver and listen on the frequency 868.3Mhz by default.
1749
1750
1751 (% style="color:#4472c4" %)**LSN50**:
1752
1753 Use the <[[LoRa RAW code>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/LoRa_Raw_Example/LSN50/&file=lora_send.zip]]> . The project file is in: MDK-ARM\STM32L072CZ-Nucleo\ Lora.uvprojx
1754
1755 Compile it and Upload it to LSN50, the LSN50 will transfer on the frequency 868.3Mhz.
1756
1757 In the Arduino Console, it will see the received packets as below.
1758
1759
1760 [[image:image-20220627160116-10.png]]
1761
1762
1763 == 6.5  How to set up LSN50 to work in 8 channel mode ==
1764
1765
1766 (((
1767 By default, the frequency bands US915, AU915, CN470 work in 72 frequencies. Many gateways are 8 channel gateways, and in this case, the OTAA join time and uplink schedule is long and unpredictable while the end node is hopping in 72 frequencies.
1768 )))
1769
1770 (((
1771 You can configure the end node to work in 8 channel mode by using the AT+CHE command. The 500kHz channels are always included for OTAA.
1772 )))
1773
1774 (((
1775
1776 )))
1777
1778 (((
1779 For example, in (% style="color:blue" %)**US915**(%%) band, the frequency table is as below. By default, the end node will use all channels (0~~71) for OTAA Join process. After the OTAA Join, the end node will use these all channels (0~~71) to send uplink packets.
1780 )))
1781
1782 [[image:image-20220627160940-13.png]]
1783
1784
1785 (((
1786 When you use the TTN V3 network, the US915 frequency bands use are:
1787 )))
1788
1789 * (((
1790 903.9 - SF7BW125 to SF10BW125
1791 )))
1792 * (((
1793 904.1 - SF7BW125 to SF10BW125
1794 )))
1795 * (((
1796 904.3 - SF7BW125 to SF10BW125
1797 )))
1798 * (((
1799 904.5 - SF7BW125 to SF10BW125
1800 )))
1801 * (((
1802 904.7 - SF7BW125 to SF10BW125
1803 )))
1804 * (((
1805 904.9 - SF7BW125 to SF10BW125
1806 )))
1807 * (((
1808 905.1 - SF7BW125 to SF10BW125
1809 )))
1810 * (((
1811 905.3 - SF7BW125 to SF10BW125
1812 )))
1813 * (((
1814 904.6 - SF8BW500
1815 )))
1816
1817 (((
1818 Because the end node is now hopping in 72 frequency, it makes it difficult for the devices to Join the TTN V3 network and uplink data. To solve this issue, you can access the device via the AT commands and run:
1819 )))
1820
1821 (((
1822 (% style="color:blue" %)**AT+CHE=2**
1823 )))
1824
1825 (((
1826 (% style="color:blue" %)**ATZ**
1827 )))
1828
1829
1830 (((
1831 to set the end node to work in 8 channel mode. The device will work in Channel 8-15 & 64-71 for OTAA, and channel 8-15 for Uplink.
1832 )))
1833
1834 (((
1835 The (% style="color:blue" %)**AU915**(%%) band is similar. Below are the AU915 Uplink Channels.
1836 )))
1837
1838 [[image:image-20220627161124-14.png]]
1839
1840
1841 == 6.6  How to set up LSN50 to work with Single Channel Gateway such as LG01/LG02? ==
1842
1843
1844 (((
1845 In this case, users need to set LSN50 to work in ABP mode and transmit in only one frequency.
1846 )))
1847
1848 (((
1849 Assume we have a LG02 working in the frequency 868400000 now, below is the steps.
1850 )))
1851
1852
1853 (((
1854 (% style="color:blue" %)**Step1: **(%%)Log in TTN V3, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
1855 )))
1856
1857
1858 [[image:image-20220627160542-11.png]]
1859
1860
1861 (((
1862 (% style="color:red" %)**Note: You need to make sure the above three keys match in the device and in TTN V3. You can change them either in TTN V3 or in the Device to make them match. In TTN V3, NETSKEY and APPSKEY can be configured in the setting page, but the Device Addr is generated by TTN V3.**
1863 )))
1864
1865
1866 (((
1867 (% style="color:red" %)**You can also change the Device ADDR in TTN V3 by using the [[The Things Network CLI>>url:https://www.thethingsnetwork.org/docs/network/cli/quick-start.html]].**
1868 )))
1869
1870
1871 (((
1872 (% style="color:blue" %)**Step2:  **(%%)Run AT commands to make the LSN50 work in Single frequency and ABP mode. Below are the AT commands:
1873 )))
1874
1875
1876 (((
1877 (% style="background-color:#dcdcdc" %)AT+FDR(%%)  ：  Reset Parameters to Factory Default, Keys Reserve
1878 )))
1879
1880 (((
1881 (% style="background-color:#dcdcdc" %)AT+NJM=0(%%) ： Set to ABP mode
1882 )))
1883
1884 (((
1885 (% style="background-color:#dcdcdc" %)AT+ADR=0(%%) ： Set the Adaptive Data Rate Off
1886 )))
1887
1888 (((
1889 (% style="background-color:#dcdcdc" %)AT+DR=5(%%)  ： Set Data Rate (Set AT+DR=3 for 915 band)
1890 )))
1891
1892 (((
1893 (% style="background-color:#dcdcdc" %)AT+TDC=300000(%%)  ：  Set transmit interval to 5 minutes
1894 )))
1895
1896 (((
1897 (% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%) ： Set transmit frequency to 868.4Mhz
1898 )))
1899
1900 (((
1901 (% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%)  ：Set Device Address to 26 01 1A F1
1902 )))
1903
1904 (((
1905 (% style="background-color:#dcdcdc" %)ATZ(%%)  ：  Reset MCU
1906 )))
1907
1908
1909 (((
1910 As shown  below:
1911 )))
1912
1913 [[image:image-20220627160542-12.png]]
1914
1915
1916 == 6.7  How to configure the EUI keys in LSN50? ==
1917
1918
1919 (((
1920 The early version of LSN50 firmware doesn't have pre-configured keys.
1921 It is recommended that you update the image to the latest version before configure the keys. Refer [[upgrade_image>>||anchor="H2.7200BFirmwareChangeLog"]] to update the firmware to the latest version.
1922 )))
1923
1924 (((
1925 Run AT commands to set the keys to desired keys; refer [[AT Command manual>>https://www.dragino.com/downloads/downloads/LSN50-LoRaST/DRAGINO_LSN50_AT_Commands_v1.6.3.pdf]].
1926 )))
1927
1928
1929 = 7.  Trouble Shooting =
1930
1931 == 7.1  Connection problem when uploading firmware. ==
1932
1933
1934 (((
1935 (% style="color:red" %)**Issue**(%%): While using USB to TTL to upload firmware via UART interface. It works for several times but most of times it fails.
1936 )))
1937
1938 (((
1939
1940 )))
1941
1942 (((
1943 (% style="color:green" %)**Checklist**:
1944 )))
1945
1946 (((
1947 ~1. Double check if follow up exactly the steps as manual.
1948 )))
1949
1950 (((
1951 2. Check if hardware works fine: a) check if AT command works, b) check if ISP / flash switch works: PA12 will have different output level while set the ISP/Flash Switch in different position. c) check if reset button works.
1952 )))
1953
1954 (((
1955 3. If you use Windows10 system. Please change the flash loader to run in Windows7 compatibility mode.
1956 )))
1957
1958
1959 [[image:image-20220627153421-8.png]]
1960
1961
1962 (((
1963 4. We have seen cases where the FT232 USB TTL adapter has a reliability issue with the PC USB chipset (Intel). In this case, even though points 1 and 2 above work, it still has a reliability issue for uploading. If this happens, change to a different PC or change the USB to TTL adapter to solve the issue.
1964 )))
1965
1966
1967 == 7.2  Why I can't join TTN V3 in US915 / AU915 bands? ==
1968
1969
1970 It is due to channel mapping. Please see the [[Eight Channel Mode>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.19EightChannelMode"]] section above for details.
1971
1972
1973 == 7.3  AT Command input doesn't work ==
1974
1975
1976 In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:red" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:red" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
1977
1978
1979 = 8.  Order Info =
1980
1981
1982 Part Number: (% style="color:blue" %)**LSN50-XX-YY  **(%%)**or  (% style="color:blue" %)LSN50-v2-XX-YY-ZZ(%%)**
1983
1984 (% style="color:blue" %)**XX**(%%): The default frequency band
1985
1986 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1987 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1988 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1989 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1990 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1991 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1992 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1993 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1994
1995 (% style="color:blue" %)**YY**(%%)**: **Hole Option
1996
1997 * (% style="color:red" %)**12**(%%): With M12 waterproof cable hole
1998 * (% style="color:red" %)**16**(%%): With M16 waterproof cable hole
1999 * (% style="color:red" %)**20**(%%): With M20 waterproof cable hole (LSN50 v2 doesn't have this version)
2000 * (% style="color:red" %)**NH**(%%): No Hole
2001
2002 (% style="color:blue" %)**ZZ**(%%)**: **Battery Option ( Only valid for v2 model)
2003
2004 * (% style="color:red" %)**4**(%%): with 4000mAh battery
2005 * (% style="color:red" %)**8**(%%): with 8500mAg battery
2006
2007
2008 = 9. ​ Packing Info =
2009
2010
2011 (% style="color:blue" %)**For LSN50**(%%)**:**
2012
2013 **Package Includes**:
2014
2015 * LSN50 LoRa Sensor Node x 1
2016
2017 **Dimension and weight**:
2018
2019 * Device Size: 8 x 6.5 x 5 cm
2020 * Device Weight: 137g
2021 * Package Size / pcs : 9 x 7 x 6cm
2022 * Weight / pcs : 160g
2023
2024 (% style="color:blue" %)**For LSN50 v2**(%%)**:**
2025
2026 **Package Includes**:
2027
2028 * LSN50 v2 LoRa Sensor Node x 1
2029 * External antenna x 1
2030 * Spring Antenna (evaluate purpose)
2031
2032 **Dimension and weight**:
2033
2034 * Device Size: 9.7 x 6.5 x 4.7 cm
2035 * Device Weight: 150g
2036 * Package Size / pcs : 14.0 x 8x 5 cm
2037 * Weight / pcs : 180g
2038
2039
2040 = 10.  ​Support =
2041
2042
2043 * 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.
2044 * 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 [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].
2045
2046
2047 = 11.  References =
2048
2049
2050 * [[Product Page>>url:http://www.dragino.com/products/lora/item/128-lsn50.html]]
2051 * [[Data Sheet, Document Base>>https://www.dropbox.com/sh/djkxs7mr17y94mi/AABVlWbM9uzK9OA3mXyAT10Za?dl=0]]
2052 * [[Image Download>>url:https://github.com/dragino/LoRa_STM32/tree/master/LSN50.hex]]
2053 )))

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