Version 441.2 by Xiaoling on 2022/12/13 10:41

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15 **Table of Contents:**
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17 (% _mstaria-label="285168" aria-label="macro:toc widget" contenteditable="false" role="region" tabindex="-1" %)
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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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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, smartphone detection, building automation, and so on.
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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
116 == ​1.3  Features ==
117
118
119 * LoRaWAN 1.0.3 Class A, Class C
120 * STM32L072xxxx MCU
121 * SX1276/78 Wireless Chip
122 * Pre-load bootloader on USART1/USART2
123 * MDK-ARM Version 5.24a IDE
124 * I2C, LPUSART1, USB, SPI2
125 * 3x12bit ADC, 1x12bit DAC
126 * 20xDigital I/Os
127 * LoRa™ Modem
128 * Preamble detection
129 * Baud rate configurable
130 * CN470/EU433/KR920/US915/IN865
131 * EU868/AS923/AU915/MA869
132 * Open-source hardware / software
133 * Available Band:433/868/915/920 Mhz
134 * IP66 Waterproof Enclosure
135 * Ultra-Low Power consumption
136 * AT Commands to change parameters
137 * 4000mAh or 8500mAh Battery for long term use。
138
139
140
141 == 1.4 ​ Applications ==
142
143
144 * Smart Cities
145 * Smart Factory
146 * Smart Metering
147 * Smart Agriculture
148 * Smart Buildings & Home Automation
149 * Logistics and Supply Chain Management
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151
152
153 == 1.5  Pin Definitions and Switch ==
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156 (% class="wikigeneratedid" %)
157 [[image:1656295519542-152.png||height="413" width="728"]]
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160 (% class="wikigeneratedid" %)
161 [[image:1656295532863-613.png||height="371" width="721"]]
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165 [[image:image-20220627101527-1.png]]
166
167
168 === 1.5.1 Jumper JP2 ===
169
170
171 Power on Device when put this jumper.
172
173
174 === 1.5.2 BOOT MODE / SW1 ===
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176
177 (((
178 ~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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181 (((
182 2. Flash:  work mode, device starts to work and send out console output for further debug
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184
185
186 === 1.5.3 Reset Button ===
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188
189 Press to reboot the device.
190
191
192 === 1.5.4 LED ===
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194
195 It will flash:
196
197 ~1. When boot the device in flash mode
198
199 2. Send an uplink packet
200
201
202 == 1.6  Hardware Change log ==
203
204
205 (% style="color:red" %)**Note: Hardware version is marked in the PCB.**
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207
208 (% style="color:#4472c4" %)**LSN50 v2.1:**
209
210 1. Change R14 to 1M ohm
211 1. Change R3, R4 to 4.7Kohm. So no need to modify them for 3 DS18B20 connection.
212 1. Add ESD to each I/O
213
214 (% style="color:#4472c4" %)**LSN50 v2.0:**
215
216 * Change to a new enclosure. Improve with external antenna, IP68, ear hook.
217
218 (% style="color:#4472c4" %)**LSN50 v1.3**:
219
220 * Add P-MOS to control 5V output
221
222 (% style="color:#4472c4" %)**LSN50 v1.2**:
223
224 * Add LED. Turn on for every LoRa transmit
225 * Add pin PA4, PB13, NRST
226 * Add 5V Output, on/off control by PB5(Low to Enable, High to Disable)
227
228
229
230 == 1.7  Hole Option ==
231
232
233 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:
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235 [[image:image-20220627104757-1.png]]
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238 [[image:1656298089706-973.png]]
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240
241 = 2.  Use LSN50 with LoRaWAN firmware =
242
243 == 2.1  How it works ==
244
245
246 (((
247 (((
248 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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251 (((
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253 )))
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255 (((
256 The diagram below shows the working flow in default firmware (ver 1.8.0): 
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261 [[image:image-20220823174408-9.png||height="890" width="657"]]
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265 (((
266 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.
267 )))
268 )))
269
270
271 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
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273
274 (((
275 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. 
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278 (% 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]]
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281 )))
282
283 (% _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" %)​(%%)​
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285 (((
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287
288 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LSN50.
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290 Each LSN50is shipped with a sticker with the default device EUI as below:
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297 (% _mstaria-label="1059162" aria-label="image-20220607170145-1.jpeg image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220607170145-1.jpeg||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"]](% 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" %)​(% _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" %)​(%%)​
298
299
300 (((
301 (((
302 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
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304
305 (((
306 **Register the device:**
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308 )))
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310 (% _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" %)​​
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312 (% _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" %)​
313
314
315 **Add APP EUI and DEV EUI:**
316
317
318 (% _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" %)​
319
320
321
322 **Add APP EUI in the application:**
323
324
325 (% _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" %)​
326
327
328 **Add APP KEY**
329
330 (% _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" %)​
331
332 (% _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" %)​
333
334 (% _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" %)​(%%)​
335
336 (% style="color:blue" %)**Step 2**(%%)**:** Power on LSN50
337
338
339 Put a Jumper on JP2 to power on the device.(% style="display:none" %)
340
341 [[image:image-20220627145643-5.png]](% style="display:none" %)
342
343 (% style="display:none" %)
344
345
346 **For LSn50v2:**
347
348 [[image:1656313034748-905.png]](% style="display:none" %)
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" %)​(%%)​(% _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" %)​(%%)​
352
353 (((
354 (((
355 (% 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.
356
357
358 )))
359 )))
360
361 (% _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]](% 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"]]
362
363 (% _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" %)​
364
365 == 2.3  ​Working Mode & Uplink Payload ==
366
367
368 (((
369 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.
370 )))
371
372 (((
373 For example:
374 )))
375
376 (((
377 (% _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.
378 )))
379
380 (((
381
382 )))
383
384 (((
385 (% style="color:red" %)**NOTE:**
386 )))
387
388 (((
389 ~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.
390
391 2. All modes share the same Payload Explanation from HERE.
392
393 3. By default, the device will send an uplink message every 5 minutes.
394 )))
395
396
397 === 2.3.1  MOD~=1 (Default Mode) ===
398
399
400 (((
401 In this mode, uplink payload includes in total 11 bytes. Uplink packets use FPORT=2.
402
403
404 [[image:image-20220627171207-27.png]]
405
406
407 [[image:image-20220627150949-6.png]]
408 )))
409
410
411 === 2.3.2 MOD~=2 (Distance Mode) ===
412
413
414 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.
415
416 [[image:image-20220627180835-31.png]]
417
418
419 [[image:1656324539647-568.png]]
420
421
422
423 (% style="color:red" %)**Connection of LIDAR-Lite V3HP:**
424
425
426 [[image:1656324581381-162.png]]
427
428
429
430 (% style="color:red" %)**Connection to Ultrasonic Sensor:**
431
432
433 [[image:1656324598488-204.png]]
434
435
436
437 For the connection to TF-Mini or TF-Luna , MOD2 payload is as below:
438
439
440 [[image:image-20220628083801-1.png]]
441
442
443 [[image:1656376779088-686.png]]
444
445
446
447 (% style="color:red" %)**Connection to [[TF-Mini plus>>url:http://en.benewake.com/product/detail/5c345cd0e5b3a844c472329b.html]] LiDAR(UART version):**
448
449
450 Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
451
452
453 [[image:1656376795715-436.png]]
454
455
456
457 (% style="color:red" %)**Connection to [[TF-Luna>>url:http://en.benewake.com/product/detail/5e1c1fd04d839408076b6255.html]] LiDAR (UART version):**
458
459
460 Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
461
462
463 [[image:1656376865561-355.png]]
464
465
466 (((
467 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.
468 )))
469
470
471 === 2.3.3 MOD~=3 (3 ADC + I2C) ===
472
473
474 This mode has total 12 bytes. Include 3 x ADC + 1x I2C
475
476 [[image:image-20220628085009-2.png]]
477
478
479 [[image:1656377431497-975.png]]
480
481
482 === 2.3.4 MOD~=4 (3 x DS18B20) ===
483
484
485 This mode is supported in firmware version since v1.6.1. Software set to AT+MOD=4
486
487 Hardware connection is as below,
488
489 (% style="color:red" %)**( Note:**
490
491 * 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.
492 * In hardware version v2.1 no need to change R3 , R4, by default, they are 4.7k ohm already.
493
494 See [[here>>||anchor="H1.6A0HardwareChangelog" _mstmutation="1"]] for hardware changelog. (% style="color:red" %)**) **
495
496 [[image:1656377461619-156.png]]
497
498
499 This mode has total 11 bytes. As shown below:
500
501 [[image:image-20220628085248-3.png]]
502
503
504 [[image:1656377606181-607.png]]
505
506
507 === 2.3.5 MOD~=5(Weight Measurement by HX711) ===
508
509
510 (((
511 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.
512
513
514 )))
515
516 [[image:1656378224664-860.png]]
517
518
519 Each HX711 need to be calibrated before used. User need to do below two steps:
520
521 1. Zero calibration. Don't put anything on load cell and run **AT+WEIGRE** to calibrate to Zero gram.
522 1. Adjust calibration factor (default value 400): Put a known weight thing on load cell and run **AT+WEIGAP** to adjust the Calibration Factor.
523 1. (((
524 Remove the limit of plus or minus 5Kg in mode 5, and expand from 2 bytes to 4 bytes, the unit is g.(Since v1.8.0)
525 )))
526
527 For example:
528
529 (% style="color:#4472c4" %)**AT+WEIGAP =403.0**
530
531 Response:  Weight is 401 g
532
533
534 Check the response of this command and adjust the value to match the real value for thing.
535
536 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:480px" %)
537 |=(% style="width: 60px;" %)(((
538 **Size(bytes)**
539 )))|=(% style="width: 30px;" %)**2**|=(% style="width: 120px;" %)**2**|=(% style="width: 60px;" %)**2**|=(% style="width: 160px;" %)**1**|=(% style="width: 40px;" %)**4**
540 |(% style="width:97px" %)**Value**|(% style="width:46px" %)Bat|(% style="width:123px" %)Temperature(DS18B20)|(% style="width:108px" %)ADC|(% style="width:133px" %)Digital Input and Digitak Interrupt|(% style="width:159px" %)Weight
541
542 [[image:image-20220820120036-2.png||height="469" width="1003"]]
543
544
545 === 2.3.6 MOD~=6 (Counting Mode, Since firmware v1.6.5) ===
546
547
548 (((
549 (((
550 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.
551 )))
552 )))
553
554 (((
555 (((
556 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.
557 )))
558 )))
559
560
561 [[image:1656378351863-572.png]]
562
563
564 (((
565 (% 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.
566 )))
567
568 (((
569
570 )))
571
572 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:410px" %)
573 |=(% style="width: 60px;" %)**Size(bytes)**|=(% style="width: 44px;" %)**2**|=(% style="width: 110px;" %)**2**|=(% style="width: 51px;" %)**2**|=(% style="width: 70px;" %)**1**|=(% style="width: 50px;" %)**4**
574 |(% style="width:80px" %)**Value**|(% style="width:44px" %)[[BAT>>||anchor="H2.4.1BatteryInfo"]]|(% style="width:172px" %)(((
575 [[Temperature(DS18B20)>>||anchor="H2.4.2Temperature28DS18B2029"]]
576 )))|(% style="width:51px" %)[[ADC>>||anchor="H2.4.4AnalogueDigitalConverter28ADC29"]]|(% style="width:206px" %)[[Digital in>>||anchor="H2.4.3DigitalInput"]]|(% style="width:72px" %)Count
577
578 [[image:1656378441509-171.png]]
579
580
581 === 2.3.7  MOD~=7 Three interrupt contact modes (the hardware version needs to support three interrupt versions, Since firmware v1.8.0) ===
582
583
584 [[image:image-20220820140109-3.png]]
585
586
587 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:500px" %)
588 |=(% style="width: 60px;" %)(((
589 **Size(bytes)**
590 )))|=(% style="width: 30px;" %)**2**|=(% style="width: 100px;" %)**2**|=(% style="width: 30px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 70px;" %)**1**|=(% style="width: 70px;" %)1|=(% style="width: 50px;" %)2
591 |(% style="width:97px" %)**Value**|(% style="width:46px" %)BAT|(% style="width:123px" %)Temperature(DS18B20)|(% style="width:108px" %)ADC|(% style="width:133px" %)(((
592 Digital in
593
594 & Digital Interrupt1(PB14)
595 )))|(% style="width:159px" %)Digital Interrupt2(PB15)|(% style="width:159px" %)Digital Interrupt3(PA4)|(% style="width:159px" %)Reserved
596
597
598
599 === 2.3.8  MOD~=8 (3ADC+1DS18B20, Since firmware v1.8.0) ===
600
601
602 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:480px" %)
603 |=(% style="width: 60px;" %)(((
604 **Size(bytes)**
605 )))|=(% style="width: 30px;" %)**2**|=(% style="width: 100px;" %)**2**|=(% style="width: 60px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 60px;" %)**2**|=(% style="width: 60px;" %)2
606 |(% style="width:97px" %)**Value**|(% style="width:46px" %)BAT|(% style="width:123px" %)Temperature(DS18B20)|(% style="width:108px" %)(((
607 ADC1(PA0)
608 )))|(% style="width:133px" %)(((
609 Digital in
610
611 & Digital Interrupt(PB14)
612 )))|(% style="width:159px" %)(((
613 ADC2(PA1)
614 )))|(% style="width:159px" %)(((
615 ADC3(PA4)
616 )))
617
618 [[image:image-20220823164903-2.png]]
619
620
621 === 2.3.9  MOD~=9 3DS18B20+ two Interrupt count mode (the hardware version needs to support 3 interrupt versions, Since firmware v1.8.0) ===
622
623
624 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:520px" %)
625 |=(% style="width: 60px;" %)(((
626 **Size(bytes)**
627 )))|=(% style="width: 30px;" %)**2**|=(% style="width: 80px;" %)**2**|=(% style="width: 80px;" %)**2**|=(% style="width: 70px;" %)**1**|=(% style="width: 80px;" %)**2**|=(% style="width: 60px;" %)4|=(% style="width: 60px;" %)4
628 |(% style="width:97px" %)**Value**|(% style="width:46px" %)BAT|(% style="width:123px" %)(((
629 Temperature1(PB3)
630 )))|(% style="width:108px" %)(((
631 Temperature2(PA9)
632 )))|(% style="width:133px" %)(((
633 Digital in
634
635 & Digital Interrupt(PA4)
636 )))|(% style="width:159px" %)(((
637 Temperature3(PA10)
638 )))|(% style="width:159px" %)(((
639 Count1(PB14)
640 )))|(% style="width:159px" %)(((
641 Count2(PB15)
642 )))
643
644 (% class="wikigeneratedid" id="H" %)
645 [[image:image-20220823165322-3.png]]
646
647
648 (% style="color:blue" %)**The newly added AT command is issued correspondingly:**
649
650 (% style="color:#4472c4" %)** AT+INTMOD1**(%%) (% style="background-color:yellow" %)** PB14**(%%)  pin:  Corresponding downlink:  (% style="background-color:yellow" %)**06 00 00 xx**
651
652 (% style="color:#4472c4" %)** AT+INTMOD2**(%%)  (% style="background-color:yellow" %)**PB15**(%%) pin:  Corresponding downlink:**  (% style="background-color:yellow" %)06 00 01 xx(%%)**
653
654 (% style="color:#4472c4" %)** AT+INTMOD3** (%%) (% style="background-color:yellow" %)**PA4** (%%) pin:  Corresponding downlink:  ** (% style="background-color:yellow" %)06 00 02 xx(%%)**
655
656
657 (% style="color:blue" %)**AT+SETCNT=aa,bb** 
658
659 When AA is 1, set the count of PB14 pin to BB Corresponding downlink:09 01 bb bb bb bb
660
661 When AA is 2, set the count of PB15 pin to BB Corresponding downlink:09 02 bb bb bb bb
662
663
664
665 === 2.3.10  ​Decode payload in The Things Network ===
666
667
668 While using TTN V3 network, you can add the payload format to decode the payload.
669
670
671 [[image:1656378466788-734.png]]
672
673
674 (((
675 The payload decoder function for TTN V3 are here:
676 )))
677
678 (((
679 LSN50 TTN V3 Payload Decoder:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
680 )))
681
682
683 == 2.4 Payload Explanation and Sensor Interface ==
684
685 === 2.4.1 Battery Info ===
686
687
688 (((
689 Check the battery voltage for LSN50.
690 )))
691
692 (((
693 Ex1: 0x0B45 = 2885mV
694 )))
695
696 (((
697 Ex2: 0x0B49 = 2889mV
698 )))
699
700
701 === 2.4.2 Temperature (DS18B20) ===
702
703
704 If there is a DS18B20 connected to PB3 pin. The temperature will be uploaded in the payload.
705
706 More DS18B20 can check the [[3 DS18B20 mode>>||anchor="2.3.4MOD3D4283xDS18B2029"]]
707
708
709 (% style="color:#4472c4" %)**Connection:**
710
711 [[image:1656378573379-646.png]]
712
713
714 (% style="color:#4472c4" %)**Example**:
715
716 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
717
718 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
719
720
721 === 2.4.3 Digital Input ===
722
723
724 The digital input for pin PA12,
725
726 * When PA12 is high, the bit 1 of payload byte 6 is 1.
727 * When PA12 is low, the bit 1 of payload byte 6 is 0.
728
729
730
731 === 2.4.4 Analogue Digital Converter (ADC) ===
732
733
734 (((
735 The ADC pins in LSN50 can measure range from 0~~3.3v, it use reference voltage from STM32. If user need to measure a voltage >3.3v, please use resistors to divide this voltage to lower than 3.3v, otherwise, it may destroy the ADC pin.
736 )))
737
738
739 (((
740 The ADC monitors the voltage on the PA0 line, in mV.
741 )))
742
743 (((
744 Ex: 0x021F = 543mv,
745 )))
746
747
748 (((
749 (% style="color:#4472c4" %)** Example1:** (%%) Reading an Oil Sensor (Read a resistance value):
750
751
752 )))
753
754 [[image:image-20220627172409-28.png]]
755
756
757 In the LSN50, we can use PB4 and PA0 pin to calculate the resistance for the oil sensor.
758
759
760 (% style="color:blue" %)**Steps:**
761
762 1. Solder a 10K resistor between PA0 and VCC.
763 1. Screw oil sensor's two pins to PA0 and PB4.
764
765 The equipment circuit is as below:
766
767
768 [[image:image-20220627172500-29.png]]
769
770
771 According to above diagram:
772
773 [[image:image-20220628091043-4.png]]
774
775 So
776
777 [[image:image-20220628091344-6.png]]
778
779
780 [[image:image-20220628091621-8.png]] is the reading of ADC. So if ADC=0x05DC=0.9 v and VCC (BAT) is 2.9v
781
782
783 The [[image:image-20220628091702-9.png]] 4.5K ohm
784
785 Since the Bouy is linear resistance from 10 ~~ 70cm.
786
787
788 The position of Bouy is [[image:image-20220628091824-10.png]] , from the bottom of Bouy.
789
790
791 === 2.4.5 Digital Interrupt ===
792
793
794 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.
795
796
797 (((
798 (% style="color:#4472c4" %)** Interrupt connection method:**
799 )))
800
801 [[image:1656379178634-321.png]]
802
803
804 (((
805 (% style="color:#4472c4" %)**Example to use with door sensor : (Requires firmware > 1.5.1)**
806 )))
807
808
809 (((
810 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.
811 )))
812
813 [[image:1656379210849-860.png]]
814
815
816 (((
817 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.
818 )))
819
820
821 (((
822 (% style="color:#4472c4" %)** Below is the installation example:**
823 )))
824
825 (((
826 Fix one piece of the magnetic sensor to the door and connect the two pins to LSN50 as follows:
827 )))
828
829 * (((
830 One pin to LSN50's PB14 pin
831 )))
832 * (((
833 The other pin to LSN50's VCC pin
834 )))
835
836 (((
837 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.
838 )))
839
840
841 (((
842 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.
843 )))
844
845 (((
846 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.
847 )))
848
849
850 [[image:1656379283019-229.png]]
851
852
853 (((
854 The above photos shows the two parts of the magnetic switch fitted to a door.
855 )))
856
857
858 (((
859 (((
860 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.
861 )))
862 )))
863
864
865 (((
866 The command is:
867 )))
868
869 (((
870 (% _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" %)**. **(%%))
871 )))
872
873
874 (((
875 Below shows some screen captures in TTN V3:
876 )))
877
878
879 [[image:1656379339508-835.png]]
880
881
882 In MOD=1, user can use byte 6 to see the status for door open or close. TTN V3 decoder is as below:
883
884 (% style="background-color:#dcdcdc" %)door= (bytes[6] & 0x80)? "CLOSE":"OPEN";
885
886
887 (% style="color:red" %)**Notice for hardware version LSN50 v1 < v1.3**(%%) (produced before 2018-Nov).
888
889 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.
890
891 [[image:1656379563303-771.png]]
892
893
894 === 2.4.6 I2C Interface (SHT20) ===
895
896
897 (((
898 The PB6(SDA) and PB7(SCK) are I2C interface lines. You can use these to connect to an I2C device and get the sensor data.
899 )))
900
901 (((
902 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).**
903
904 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.
905 )))
906
907 (((
908 Below is the connection to SHT20/ SHT31. The connection is as below:
909 )))
910
911
912 [[image:image-20220902163605-2.png]]
913
914
915 The device will be able to get the I2C sensor data now and upload to IoT Server.
916
917
918 [[image:1656379664142-345.png]]
919
920 Convert the read byte to decimal and divide it by ten.
921
922
923 (% style="color:blue" %)**Example:**
924
925 Temperature:  Read:0116(H) = 278(D)  Value:  278 /10=27.8℃;
926
927 Humidity:    Read:0248(H)=584(D)  Value:  584 / 10=58.4, So 58.4%
928
929
930 If you want to use other I2C device, please refer the SHT20 part source code as reference.
931
932
933 === 2.4.7 ​Distance Reading ===
934
935
936 Refer [[Ultrasonic Sensor section>>||anchor="H2.4.8UltrasonicSensor"]].
937
938
939 === 2.4.8 Ultrasonic Sensor ===
940
941
942 (((
943 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]]
944 )))
945
946
947 (((
948 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.
949 )))
950
951
952 (((
953 The picture below shows the connection:
954 )))
955
956 [[image:1656380061365-178.png]]
957
958
959 Connect to the LSN50 and run (% style="color:blue" %)**AT+MOD=2**(%%) to switch to ultrasonic mode (ULT).
960
961 The ultrasonic sensor uses the 8^^th^^ and 9^^th^^ byte for the measurement value.
962
963
964 (% style="color:blue" %)**Example:**
965
966 Distance:  Read: 0C2D(Hex) = 3117(D)  Value:  3117 mm=311.7 cm
967
968
969 [[image:1656384895430-327.png]]
970
971
972 [[image:1656384913616-455.png]]
973
974
975 You can see the serial output in ULT mode as below:
976
977 [[image:1656384939855-223.png]]
978
979
980 **In TTN V3 server:**
981
982
983 [[image:1656384961830-307.png]]
984
985
986 [[image:1656384973646-598.png]]
987
988
989 === 2.4.9  Battery Output - VDD pin ===
990
991
992 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.
993
994
995 === 2.4.10  +5V Output ===
996
997
998 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. 
999
1000
1001 (((
1002 Since firmware (% style="color:red" %)**v1.6.3**(%%), The 5V output time can be controlled by AT Command.
1003 )))
1004
1005 (((
1006 (% style="color:#4472c4" %)**AT+5VT=1000**
1007 )))
1008
1009 (((
1010 Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.
1011 )))
1012
1013
1014 (((
1015 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.
1016 )))
1017
1018
1019 === 2.4.11  Weigh Sensor HX711 ===
1020
1021
1022 Since v1.6.2 firmware, LSN50 support Weigh Sensor HX711.
1023
1024
1025 === 2.4.12  BH1750 Illumination Sensor ===
1026
1027
1028 Since v1.7.0 firmware, MOD=1 support this sensor. The sensor value is in the 8^^th^^ and 9^^th^^ bytes.
1029
1030
1031 [[image:image-20220628110012-11.jpeg]]
1032
1033
1034 [[image:image-20220628110012-12.png]]
1035
1036
1037 === 2.4.13  Working MOD ===
1038
1039
1040 (((
1041 The working MOD info is contained in the Digital in & Digital Interrupt byte (7^^th^^ Byte).
1042 )))
1043
1044 (((
1045 User can use the 3^^rd^^ ~~ 7^^th^^  bit of this byte to see the working mod:
1046 )))
1047
1048 (((
1049 Case 7^^th^^ Byte >> 2 & 0x1f:
1050 )))
1051
1052 * 0: MOD1
1053 * 1: MOD2
1054 * 2: MOD3
1055 * 3: MOD4
1056 * 4: MOD5
1057 * 5: MOD6
1058
1059
1060
1061 == 2.5 Configure LSN50 via AT or Downlink ==
1062
1063
1064 (((
1065 User can configure LSN50 via [[AT Commands >>||anchor="H3.A0UsingtheATCommands"]]or LoRaWAN Downlink Commands
1066 )))
1067
1068 (((
1069 There are two kinds of Commands:
1070 )))
1071
1072 * (% _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"]]
1073
1074 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LSN50.  User can see these commands below:
1075
1076
1077
1078 === 2.5.1 Common Commands: ===
1079
1080
1081 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]]
1082
1083
1084 === 2.5.2 Sensor related commands: ===
1085
1086
1087 (% style="color:blue" %)**Set work mode:**
1088
1089 * (% style="color:#037691" %)**AT Command:**
1090
1091 (((
1092 (% _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)
1093 )))
1094
1095 (((
1096 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+MOD=?** (%%) ~/~/  Get current work MOD
1097 )))
1098
1099
1100 * (% style="color:#037691" %)**Downlink Payload:**
1101
1102 (% style="background-color:#dcdcdc" %)**0x0A aa** (%%) ~/~/ Same as AT+MOD=aa
1103
1104
1105
1106 (% style="color:blue" %)**Set the trigger interrupt mode:**
1107
1108 * (% style="color:#037691" %)**AT Command:**
1109
1110 (((
1111 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+INTMOD=2**  (%%) ~/~/ Set INTMOD =2. (0: Disable, 1:falling or rising, 2: falling, 3: rising)
1112 )))
1113
1114 (((
1115 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+INTMOD=?**  (%%) ~/~/  Get current INTMOD
1116 )))
1117
1118
1119 * (% style="color:#037691" %)**Downlink Payload:**
1120
1121 (% style="background-color:#dcdcdc" %)**0x06 000003**      (%%) ~/~/ Set AT+INTMOD=3
1122
1123
1124
1125 (% style="color:blue" %)**Set the 5V power open time during sampling:**
1126
1127 * (% style="color:#037691" %)**AT Command:**
1128
1129 (((
1130 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+5VT=1000** (%%) ~/~/ Set 5v open time to 1000ms
1131 )))
1132
1133 (((
1134 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+5VT=?**    (%%) ~/~/  Check current 5v open duration
1135 )))
1136
1137
1138 * (% style="color:#037691" %)**Downlink Payload:**
1139
1140 (% style="background-color:#dcdcdc" %)**0x07 aa bb**    (%%) ~/~/ Equal AT+5VT=0x(aa bb)
1141
1142
1143
1144 (% style="color:blue" %)**Set the weight to 0g (Zero Calibration):**
1145
1146 * (% style="color:#037691" %)**AT Command:**
1147
1148 (% style="background-color:#dcdcdc" %)**AT+WEIGRE** ** **(%%)** **~/~/ Set the weight to 0g
1149
1150
1151 * (% style="color:#037691" %)**Downlink Payload:**
1152
1153 (% style="background-color:#dcdcdc" %)**0x08 01** (%%) ~/~/ Set the weight to 0g
1154
1155
1156
1157 (% style="color:blue" %)**Get or Set the GAP Value (calibrate factor) of measurement:**
1158
1159 * (% style="color:#037691" %)**AT Command:**
1160
1161 (((
1162 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+WEIGAP=403.0**  (%%) ~/~/ Set GAP Value =403.0 (response: Weight: xx g)
1163 )))
1164
1165 (((
1166 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+WEIGAP=?**  (%%) ~/~/  Get current GAP Value
1167 )))
1168
1169
1170 * (% style="color:#037691" %)**Downlink Payload:**
1171
1172 (% style="background-color:#dcdcdc" %)**0x08 02 aa bb** (%%) ~/~/ Equal to AT+WEIGAP=0x(aa bb)/10
1173
1174
1175
1176 (% style="color:blue" %)**Encrypt upload:**
1177
1178 * (% style="color:#037691" %)**AT Command:**
1179
1180 (((
1181 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+DECRYPT=1**  (%%) ~/~/ The payload is uploaded without encryption
1182 )))
1183
1184 (((
1185 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+DECRYPT=0**  (%%) ~/~/  Encrypt when uploading payload (default)
1186 )))
1187
1188
1189
1190 (% style="color:blue" %)**Get data:**
1191
1192 * (% style="color:#037691" %)**AT Command:**
1193
1194 (((
1195 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+GETSENSORVALUE=0** (%%) ~/~/ The serial port gets the reading of the current sensor
1196 )))
1197
1198 (((
1199 (% _mstmutation="1" style="background-color:#dcdcdc" %)**AT+GETSENSORVALUE=1** (%%) ~/~/  The serial port gets the current sensor reading and uploads it.
1200
1201
1202
1203 (% style="color:blue" %)**Resets the downlink packet count:**
1204
1205 * (% style="color:#037691" %)**AT Command:**
1206
1207 (((
1208 (% _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)
1209 )))
1210
1211 (((
1212 (% _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
1213 )))
1214
1215
1216
1217 (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches:**
1218
1219 * (% style="color:#037691" %)**AT Command:**
1220
1221 (((
1222 (% _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)
1223 )))
1224
1225 (((
1226 (% _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.
1227 )))
1228
1229 * (% style="color:#037691" %)**Downlink Payload:**
1230
1231 (% class="wikigeneratedid" %)
1232 (% style="background-color:#dcdcdc" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1233
1234
1235
1236 (% style="color:blue" %)**Copy downlink to uplink:**
1237
1238 * (% style="color:#037691" %)**AT Command:**
1239
1240 (((
1241 (% _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.
1242 )))
1243
1244 (% class="wikigeneratedid" %)
1245 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.
1246
1247
1248 (% class="wikigeneratedid" %)
1249 [[image:image-20220823173747-6.png||height="165" width="1124"]]
1250
1251 **For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.**
1252
1253
1254
1255 [[image:image-20220823173833-7.png||height="149" width="1124"]]
1256
1257 **For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.**
1258
1259
1260
1261 (% style="color:blue" %)**Query version number and frequency band 、TDC:**
1262
1263 * (((
1264 (% style="color:#037691" %)**Downlink: 26 01  **(%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1265 )))
1266
1267 **Example:**
1268
1269
1270 [[image:image-20220823173929-8.png||height="76" width="1205"]]
1271
1272
1273
1274 (% style="color:blue" %)**Add rejoin feature if device offline:**
1275
1276 * (% style="color:#037691" %)**AT Command:**
1277
1278 **AT+DDETECT=<Flag>,<ACK_Timout_1>,<ACK_Timout_2>    (Default Value: AT+DDETECT=1,1440,2880)**
1279
1280 (% style="color:red" %)**Flag:** (%%) 1 Enable online detect,0: Disable online detect
1281
1282 (% style="color:red" %)**ACK_Timout_1:**(%%) Unit: min
1283
1284 (% style="color:red" %)**ACK_Timout_2:**(%%) Unit: min
1285
1286
1287 **Example: AT+DDETECT=1,1440,2880**
1288
1289 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).
1290
1291 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.
1292
1293 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.
1294
1295
1296 * (((
1297 (% style="color:#037691" %)**Downlink: 0x32 01 05A0 0B40 **
1298
1299 0x01 : Flag
1300
1301 0x05A0: ACK_Timout_1
1302
1303 0x0B40: ACK_Timout_2
1304
1305
1306
1307 )))
1308
1309 (% class="wikigeneratedid" %)
1310 (% style="color:blue" %)**Add new feature to control NBTrans for unconfirmed uplink mode:**
1311
1312 * (% style="color:#037691" %)**AT Command:**
1313
1314 (% 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.
1315
1316 **AT+SETMAXNBTRANS=value1,value2 Default Value: AT+SETMAXNBTRANS=1,0**
1317
1318 (% 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.
1319
1320 (% style="color:red" %)**value2:** (%%) 0: uplink fcnt doesn't change for each NBTrans;  1: uplink fcnt increase by 1 for each NBTrans.
1321
1322 set value2 to 1 for Chirpstack server, because Chirpstack will ignore same FCNT in re-transmission.
1323
1324
1325 **Example: AT+SETMAXNBTRANS=2,1**
1326
1327 Set max NBTrans to 2, fcnt will increase +1 for each NBTrans
1328
1329
1330 * (((
1331 (% style="color:#037691" %)**Downlink: 0x33 02 01**
1332
1333 value1=0x02
1334 )))
1335
1336 (% class="wikigeneratedid" %)
1337 value2=0x01
1338
1339
1340 == 2.6 Show Data in Datacake IoT Server ==
1341
1342
1343 (((
1344 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:
1345 )))
1346
1347 (((
1348
1349 )))
1350
1351 (((
1352 (% style="color:blue" %)**Step 1**(%%)**:** Be sure that your device is programmed and properly connected to the network at this time.
1353 )))
1354
1355 (((
1356 (% 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:
1357 )))
1358
1359
1360 [[image:1656385623971-339.png]]
1361
1362
1363 [[image:1656385646347-395.png]]
1364
1365
1366 [[image:1656385662459-942.png]]
1367
1368
1369 (% style="color:blue" %)**Step 3**(%%)**: **Create an account or log in Datacake.
1370
1371
1372 (% style="color:blue" %)**Step 4**(%%)**:** Search the LSN50 and add DevEUI.
1373
1374
1375 [[image:1656385688973-317.png]]
1376
1377
1378 == 2.7 ​Firmware Change Log ==
1379
1380
1381 (((
1382 **Firmware download: ** [[https:~~/~~/www.dropbox.com/sh/9k0a6sn8a94dc03/AAD54woDmnmAMUMY2WfKfjxoa?dl=0>>https://www.dropbox.com/sh/9k0a6sn8a94dc03/AAD54woDmnmAMUMY2WfKfjxoa?dl=0]]
1383 )))
1384
1385 (((
1386 **Firmware Change Log: **[[https:~~/~~/www.dropbox.com/sh/9k0a6sn8a94dc03/AAD54woDmnmAMUMY2WfKfjxoa?dl=0>>https://www.dropbox.com/sh/9k0a6sn8a94dc03/AAD54woDmnmAMUMY2WfKfjxoa?dl=0]]
1387
1388
1389 )))
1390
1391 == 2.8 Use VDD or +5V to Power External Sensor ==
1392
1393
1394 (((
1395 User can use VDD or +5V to power external sensor.
1396 )))
1397
1398 (((
1399 (% style="color:red" %)**Note:**
1400 )))
1401
1402 1. (((
1403 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.
1404 )))
1405 1. (((
1406 +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"]].
1407 )))
1408
1409 (((
1410 (% style="color:red" %)**Note: Always test the actually current pass by the JP2 jumper when connect to a new type of sensor.**
1411 )))
1412
1413
1414 == 2.9  Battery Analysis ==
1415
1416 === 2.9.1  Battery Type ===
1417
1418
1419 (((
1420 The LSN50 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
1421 )))
1422
1423 (((
1424 The battery is designed to last for more than 5 years for the LSN50.
1425 )))
1426
1427
1428 (((
1429 The battery related documents as below:
1430 )))
1431
1432 * [[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/]],
1433 * [[Lithium-Thionyl Chloride Battery datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/||_mstmutation="1"]], [[Tech Spec>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/||_mstmutation="1"]]
1434 * [[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/]], [[Tech Spec>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/]]
1435
1436 [[image:image-20220627175349-30.png]]
1437
1438
1439 === 2.9.2 ​Power consumption Analyze ===
1440
1441
1442 When connect to different sensors, it is good to test the power consumption with the sensor working. User can remove the ON/OFF Jumper of LSN50, and connect a multimeter between the two pins of this header and measure the current to know the whole system power consumption. Because the sleep mode will have as low as 10uA, at least 4.5 digit multimeter is required to measure this level of current.
1443
1444 (((
1445 A victor VC86E is recommended.
1446 )))
1447
1448 [[image:1656323400306-359.png]]
1449
1450
1451 (((
1452 In a minimum system with DS18B20 and Oil Sensor and default firmware, the power consumption includes:
1453 )))
1454
1455 (((
1456
1457 )))
1458
1459 (((
1460 ~1. Deep Sleep (Stop mode) for STM32. ~~ 5uA
1461 )))
1462
1463 (((
1464 2. Sampling current while reading DS18B20 and Oil Sensor
1465 )))
1466
1467 * (((
1468 Oil Sensor sampling time: 200us, current: 0.3mA
1469 )))
1470 * (((
1471 DS18B20 sampling time: 750ms, current: 0.64mA
1472 )))
1473 * (((
1474 Above power should add 8mA CPU power in working mode.
1475 )))
1476
1477 (((
1478 3. LoRaWAN transmit and receive time consumption. The LoRa TX / RX time and power can be found in the [[LoRa calculator tool>>url:https://www.semtech.com/uploads/documents/SX1272LoRaCalculatorSetup1_1.zip]].
1479 )))
1480
1481
1482 (((
1483 In a typical LoRaWAN data transmit. The energy profile is as below:
1484 )))
1485
1486
1487 [[image:1656323450362-299.png]]
1488
1489
1490 (((
1491 In the LoRaWAN protocol, the device will transfer in different LoRa Radio, and have different energy profile in LoRa part. We can calculate the battery life in two cases:
1492 )))
1493
1494 1. Lower power LoRa radio. Device has a good signal to gateway
1495 1. Higher power LoRa radio. Device has a poor signal to gateway
1496
1497 (% style="color:blue" %)**Low Power Case**:
1498
1499 * Radio Parameter: SF7, 125kHz, 20dbm
1500 * Transmit interval: 15 minutes.
1501 * Payload: 8 Bytes.
1502
1503 (% style="color:blue" %)**High Power Case**:
1504
1505 * Radio Parameter: SF10, 125kHz, 20dbm
1506 * Transmit interval: 15 minutes.
1507 * Payload: 8 Bytes.
1508
1509 To simplify the calculation, we can:
1510
1511 * Combine oil sensor and DS18B20 sampling energy together to (% style="color:#4472c4" %)**751ms@8.64ma**
1512
1513 * Combine the two RX windows together.
1514
1515 There is a [[power consumption tool>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/&file=Battery_Calculator_v1.0.xlsx]] for easy analysis. Below is the analysis result.
1516
1517
1518 [[image:1656323531520-949.png]]
1519
1520
1521 [[image:1656323549994-233.png]]
1522
1523
1524 (% style="color:red" %)**Note:  Ignore the 18 year result, because the battery has a max 2% discharge per year.**
1525
1526
1527 === 2.9.3 ​Battery Note ===
1528
1529
1530 (((
1531 The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.
1532 )))
1533
1534
1535 === 2.9.4 Replace the battery ===
1536
1537
1538 (((
1539 You can change the battery in the LSN50.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
1540 )))
1541
1542 (((
1543 The default battery pack of LSN50 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes).
1544 )))
1545
1546
1547 = 3.  Using the AT Commands =
1548
1549 == 3.1  Access AT Commands ==
1550
1551
1552 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.
1553
1554
1555 (% style="color:#4472c4" %)**LSN50 v1 UART connection photo**
1556
1557 [[image:image-20220627165424-24.png||height="495" width="486"]]
1558
1559
1560
1561 (% style="color:#4472c4" %)**LSN50 v2 UART connection photo**
1562
1563 [[image:image-20220627165424-25.png||height="437" width="894"]]
1564
1565
1566
1567 (((
1568 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:
1569 )))
1570
1571
1572 [[image:image-20220627165531-26.png||height="624" width="893"]](% style="display:none" %)
1573
1574
1575 == 3.2  Common AT Command Sequence ==
1576
1577 === 3.2.1  Multi-channel ABP mode (Use with SX1301/LG308) ===
1578
1579
1580 (((
1581 (% style="color:#037691" %)**If device has not joined network via OTAA:**
1582 )))
1583
1584 (((
1585 (% style="background-color:#dcdcdc" %)**AT+FDR**
1586 )))
1587
1588 (((
1589 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1590 )))
1591
1592 (((
1593 (% style="background-color:#dcdcdc" %)**ATZ**
1594 )))
1595
1596
1597 (((
1598 (% style="color:#037691" %)**If device already joined network:**
1599 )))
1600
1601 (((
1602 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1603 )))
1604
1605 (((
1606 (% style="background-color:#dcdcdc" %)**ATZ**
1607 )))
1608
1609
1610 === 3.2.2  Single-channel ABP mode (Use with LG01/LG02) ===
1611
1612
1613 See [[Sect 6.7>>||anchor="H6.7A0HowtoconfiguretheEUIkeysinLSN503F"]]
1614
1615
1616 = 4.  Upload Firmware =
1617
1618
1619 (% style="color:red" %)**Notes**:
1620
1621 * 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.
1622 * Always run AT+FDR to reset parameters to factory default after an update image.
1623 If the update is from image >= v1.3 to another image version >=v1.3, then the keys will be kept after running AT+FDR.
1624 Otherwise (e.g. from v1.2 to v1.3), AT+FDR may erase the keys.
1625
1626
1627
1628 == 4.1  Upload Firmware via Serial Port ==
1629
1630
1631 The LSN50's AT Command port can be used for firmware upgrade. The hardware connection for upgrade firmware is as below:
1632
1633
1634 [[image:image-20220627163506-18.png||height="426" width="418"]]
1635
1636
1637 (% 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]].
1638
1639
1640 (% 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]].
1641
1642
1643 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update
1644
1645
1646 [[image:image-20220627163821-19.png]]
1647
1648
1649 [[image:image-20220627163930-20.png||height="450" width="751"]]
1650
1651
1652 [[image:image-20220627164030-21.png||height="459" width="750"]]
1653
1654
1655 (((
1656 (% style="color:blue" %)**Step4**(%%)**: **Switch SW1 back to flash state and push the RESET button.
1657 )))
1658
1659 (((
1660 The LSN50 will then run the new firmware.
1661 )))
1662
1663
1664 == 4.2  Upload Firmware via ST-Link V2 ==
1665
1666
1667 You can use ST-LINK to upgrade firmware into LSN50. The hardware connection for upgrade firmware is as below:
1668
1669
1670 [[image:1656319349131-664.png]]
1671
1672
1673 (% style="color:blue" %)**Connection:**
1674
1675 * (% style="background-color:yellow" %)**ST-LINK v2 GND  <~-~-> LSN50 GND**
1676 * (% style="background-color:yellow" %)**ST-LINK v2 SWCLK <~-~-> LSN50 PA14**
1677 * (% style="background-color:yellow" %)**ST-LINK v2 SWDIO <~-~-> LSN50 PA13**
1678 * (% style="background-color:yellow" %)**ST-LINK v2 RST  <~-~->  LSN50 NRST**
1679
1680 (% 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]]
1681
1682
1683 (% style="color:blue" %)**Step2**(%%): Download the [[LSN50 Image files>>url:https://github.com/dragino/LoRa_STM32/tree/master/LSN50.hex]].
1684
1685
1686 (% style="color:blue" %)**Step3:**(%%)** **Open ST-LINK utility, (% style="color:blue" %)**file ~-~-> open file**(%%) to select the image to be upgraded.
1687
1688
1689 (% style="color:blue" %)**Step4:**(%%)** **Click the “(% style="color:blue" %)**Program Verify**”(%%) button on ST-LINK.
1690
1691
1692 [[image:image-20220627164303-22.png]]
1693
1694
1695 (((
1696 (% 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.
1697 )))
1698
1699 (((
1700 (% 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.**
1701 )))
1702
1703
1704
1705 [[image:image-20220627164303-23.png]]
1706
1707
1708 = 5.  Developer Guide =
1709
1710
1711 * (((
1712 Software Source Code Download : [[https:~~/~~/github.com/dragino/LoRa_STM32/tree/master/STM32CubeExpansion_LRWAN>>https://github.com/dragino/LoRa_STM32/tree/master/STM32CubeExpansion_LRWAN]]
1713 )))
1714 * (((
1715 Hardware Source Code Download: [[https:~~/~~/github.com/dragino/Lora/tree/master/LSN50>>https://github.com/dragino/Lora/tree/master/LSN50]]
1716 )))
1717
1718 (((
1719 LSN50 is an open source project, developer can use compile their firmware for customized applications. User can get the source code from:
1720 )))
1721
1722 * (((
1723 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"]]
1724 )))
1725 * (((
1726 Hardware Design files:  [[https:~~/~~/github.com/dragino/Lora/tree/master/LSN50>>url:https://github.com/dragino/Lora/tree/master/LSN50]]
1727 )))
1728 * (((
1729 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/]]
1730 )))
1731
1732 (((
1733 Use Keil to open project file:
1734 )))
1735
1736 (((
1737 STM32CubeExpansion_LRWAN/Projects/Multi/Applications/LoRa/DRAGINO-LRWAN(AT)/MDK-ARM/STM32L072CZ-Nucleo/Lora.uvprojx
1738 )))
1739
1740 (((
1741
1742 )))
1743
1744 (((
1745 In Keil, you can see what frequency band the code support.
1746 )))
1747
1748 [[image:image-20220627162417-15.png]]
1749
1750
1751 **~1. If you want to change frequency, modify the Preprocessor Symbols.**
1752
1753
1754 For example, change EU868 to US915
1755
1756 [[image:1656318662202-530.png]]
1757
1758
1759 **2. Compile and build**
1760
1761 [[image:image-20220627163212-17.png]]
1762
1763
1764 = 6.  FAQ =
1765
1766 == 6.1  Why there is 433/868/915 version? ==
1767
1768
1769 (((
1770 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.
1771 )))
1772
1773
1774 == 6.2 What is the frequency range of LT LoRa part? ==
1775
1776
1777 Different LT version supports different frequency range, below is the table for the working frequency and recommend bands for each model:
1778
1779 [[image:image-20220627155456-9.png]]
1780
1781
1782 == 6.3  How to change the LoRa Frequency Bands/Region? ==
1783
1784
1785 You can follow the instructions for [[how to upgrade image>>||anchor="H2.7200BFirmwareChangeLog"]].
1786 When downloading the images, choose the required image file for download.
1787
1788
1789 == 6.4  Can I use Private LoRa protocol? ==
1790
1791
1792 (((
1793 (((
1794 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.
1795 )))
1796
1797 (((
1798 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.
1799 )))
1800
1801
1802 )))
1803
1804 (% style="color:#4472c4" %)**LoRa Shield + UNO**:
1805
1806 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.
1807
1808
1809 Refs:  [[https:~~/~~/www.dropbox.com/sh/u9s41qdx5yujwcb/AAAT5r4QkMaeOogWrzJt7Wn4a?dl=0>>https://www.dropbox.com/sh/u9s41qdx5yujwcb/AAAT5r4QkMaeOogWrzJt7Wn4a?dl=0]]
1810
1811
1812 Open the serial monitor to Arduino. The device acts as a LoRa Receiver and listen on the frequency 868.3Mhz by default.
1813
1814
1815 (% style="color:#4472c4" %)**LSN50**:
1816
1817 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
1818
1819 Compile it and Upload it to LSN50, the LSN50 will transfer on the frequency 868.3Mhz.
1820
1821 In the Arduino Console, it will see the received packets as below.
1822
1823
1824 [[image:image-20220627160116-10.png]]
1825
1826
1827 == 6.5  How to set up LSN50 to work in 8 channel mode ==
1828
1829
1830 (((
1831 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.
1832 )))
1833
1834 (((
1835 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.
1836 )))
1837
1838 (((
1839
1840 )))
1841
1842 (((
1843 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.
1844 )))
1845
1846 [[image:image-20220627160940-13.png]]
1847
1848
1849 (((
1850 When you use the TTN V3 network, the US915 frequency bands use are:
1851 )))
1852
1853 * (((
1854 903.9 - SF7BW125 to SF10BW125
1855 )))
1856 * (((
1857 904.1 - SF7BW125 to SF10BW125
1858 )))
1859 * (((
1860 904.3 - SF7BW125 to SF10BW125
1861 )))
1862 * (((
1863 904.5 - SF7BW125 to SF10BW125
1864 )))
1865 * (((
1866 904.7 - SF7BW125 to SF10BW125
1867 )))
1868 * (((
1869 904.9 - SF7BW125 to SF10BW125
1870 )))
1871 * (((
1872 905.1 - SF7BW125 to SF10BW125
1873 )))
1874 * (((
1875 905.3 - SF7BW125 to SF10BW125
1876 )))
1877 * (((
1878 904.6 - SF8BW500
1879 )))
1880
1881 (((
1882 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:
1883 )))
1884
1885 (((
1886 (% style="color:blue" %)**AT+CHE=2**
1887 )))
1888
1889 (((
1890 (% style="color:blue" %)**ATZ**
1891 )))
1892
1893
1894 (((
1895 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.
1896 )))
1897
1898 (((
1899 The (% style="color:blue" %)**AU915**(%%) band is similar. Below are the AU915 Uplink Channels.
1900 )))
1901
1902 [[image:image-20220627161124-14.png]]
1903
1904
1905 == 6.6  How to set up LSN50 to work with Single Channel Gateway such as LG01/LG02? ==
1906
1907
1908 (((
1909 In this case, users need to set LSN50 to work in ABP mode and transmit in only one frequency.
1910 )))
1911
1912 (((
1913 Assume we have a LG02 working in the frequency 868400000 now, below is the steps.
1914 )))
1915
1916
1917 (((
1918 (% 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.
1919 )))
1920
1921
1922 [[image:image-20220627160542-11.png]]
1923
1924
1925 (((
1926 (% 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.**
1927 )))
1928
1929
1930 (((
1931 (% 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]].**
1932 )))
1933
1934
1935 (((
1936 (% style="color:blue" %)**Step2:  **(%%)Run AT commands to make the LSN50 work in Single frequency and ABP mode. Below are the AT commands:
1937 )))
1938
1939
1940 (((
1941 (% style="background-color:#dcdcdc" %)AT+FDR(%%)  :  Reset Parameters to Factory Default, Keys Reserve
1942 )))
1943
1944 (((
1945 (% style="background-color:#dcdcdc" %)AT+NJM=0(%%) : Set to ABP mode
1946 )))
1947
1948 (((
1949 (% style="background-color:#dcdcdc" %)AT+ADR=0(%%) : Set the Adaptive Data Rate Off
1950 )))
1951
1952 (((
1953 (% style="background-color:#dcdcdc" %)AT+DR=5(%%)  : Set Data Rate (Set AT+DR=3 for 915 band)
1954 )))
1955
1956 (((
1957 (% style="background-color:#dcdcdc" %)AT+TDC=300000(%%)  :  Set transmit interval to 5 minutes
1958 )))
1959
1960 (((
1961 (% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%) : Set transmit frequency to 868.4Mhz
1962 )))
1963
1964 (((
1965 (% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%)  :Set Device Address to 26 01 1A F1
1966 )))
1967
1968 (((
1969 (% style="background-color:#dcdcdc" %)ATZ(%%)  :  Reset MCU
1970 )))
1971
1972
1973 (((
1974 As shown  below:
1975 )))
1976
1977 [[image:image-20220627160542-12.png]]
1978
1979
1980 == 6.7  How to configure the EUI keys in LSN50? ==
1981
1982
1983 (((
1984 The early version of LSN50 firmware doesn't have pre-configured keys.
1985 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.
1986 )))
1987
1988 (((
1989 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]].
1990 )))
1991
1992
1993 = 7.  Trouble Shooting =
1994
1995 == 7.1  Connection problem when uploading firmware. ==
1996
1997
1998 (((
1999 (% 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.
2000 )))
2001
2002 (((
2003
2004 )))
2005
2006 (((
2007 (% style="color:green" %)**Checklist**:
2008 )))
2009
2010 (((
2011 ~1. Double check if follow up exactly the steps as manual.
2012 )))
2013
2014 (((
2015 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.
2016 )))
2017
2018 (((
2019 3. If you use Windows10 system. Please change the flash loader to run in Windows7 compatibility mode.
2020 )))
2021
2022
2023 [[image:image-20220627153421-8.png]]
2024
2025
2026 (((
2027 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.
2028 )))
2029
2030
2031 == 7.2  Why I can't join TTN V3 in US915 / AU915 bands? ==
2032
2033
2034 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.
2035
2036
2037 == 7.3  AT Command input doesn't work ==
2038
2039
2040 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.
2041
2042
2043 = 8.  Order Info =
2044
2045
2046 Part Number: (% style="color:blue" %)**LSN50-XX-YY  **(%%)**or  (% style="color:blue" %)LSN50-v2-XX-YY-ZZ(%%)**
2047
2048 (% style="color:blue" %)**XX**(%%): The default frequency band
2049
2050 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
2051 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
2052 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
2053 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
2054 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
2055 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
2056 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
2057 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
2058
2059 (% style="color:blue" %)**YY**(%%)**: **Hole Option
2060
2061 * (% style="color:red" %)**12**(%%): With M12 waterproof cable hole
2062 * (% style="color:red" %)**16**(%%): With M16 waterproof cable hole
2063 * (% style="color:red" %)**20**(%%): With M20 waterproof cable hole (LSN50 v2 doesn't have this version)
2064 * (% style="color:red" %)**NH**(%%): No Hole
2065
2066 (% style="color:blue" %)**ZZ**(%%)**: **Battery Option ( Only valid for v2 model)
2067
2068 * (% style="color:red" %)**4**(%%): with 4000mAh battery
2069 * (% style="color:red" %)**8**(%%): with 8500mAg battery
2070
2071
2072
2073 = 9. ​ Packing Info =
2074
2075
2076 (% style="color:blue" %)**For LSN50**(%%)**:**
2077
2078 **Package Includes**:
2079
2080 * LSN50 LoRa Sensor Node x 1
2081
2082 **Dimension and weight**:
2083
2084 * Device Size: 8 x 6.5 x 5 cm
2085 * Device Weight: 137g
2086 * Package Size / pcs : 9 x 7 x 6cm
2087 * Weight / pcs : 160g
2088
2089 (% style="color:blue" %)**For LSN50 v2**(%%)**:**
2090
2091 **Package Includes**:
2092
2093 * LSN50 v2 LoRa Sensor Node x 1
2094 * External antenna x 1
2095 * Spring Antenna (evaluate purpose)
2096
2097 **Dimension and weight**:
2098
2099 * Device Size: 9.7 x 6.5 x 4.7 cm
2100 * Device Weight: 150g
2101 * Package Size / pcs : 14.0 x 8x 5 cm
2102 * Weight / pcs : 180g
2103
2104
2105
2106 = 10.  ​Support =
2107
2108
2109 * 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.
2110 * 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]].
2111
2112
2113
2114 = 11.  References =
2115
2116
2117 * [[Product Page>>url:http://www.dragino.com/products/lora/item/128-lsn50.html]]
2118 * [[Data Sheet, Document Base>>https://www.dropbox.com/sh/djkxs7mr17y94mi/AABVlWbM9uzK9OA3mXyAT10Za?dl=0]]
2119 * [[Image Download>>url:https://github.com/dragino/LoRa_STM32/tree/master/LSN50.hex]]
2120
2121
2122 )))