Last modified by Bei Jinggeng on 2025/01/10 15:51
<
From version < 14.1 >
edited by Edwin Chen
on 2023/05/11 23:21
To version < 11.2 >
edited by Edwin Chen
on 2023/05/11 23:01
>
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... ... @@ -272,276 +272,39 @@
272 272  Ex2: 0x0B49 = 2889mV
273 273  
274 274  
275 -=== 2.3.2 Working Modes & Sensor Data. Uplink via FPORT~=2 ===
275 +=== 2.3.2  Sensor Data. FPORT~=2 ===
276 276  
277 277  
278 -SN50v3 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 SN50v3 to different working modes.
278 +Sensor Data is uplink via FPORT=2
279 279  
280 -For example:
281 -
282 - **AT+MOD=2  ** ~/~/ will set the SN50v3 to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.
283 -
284 -
285 -(% style="color:red" %) **Important Notice:**
286 -
287 -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 SN50v3 transmit in DR0 with 12 bytes payload.
288 -1. All modes share the same Payload Explanation from HERE.
289 -1. By default, the device will send an uplink message every 20 minutes.
290 -
291 -==== 2.3.2.1  MOD~=1 (Default Mode) ====
292 -
293 -In this mode, uplink payload includes in total 11 bytes. Uplink packets use FPORT=2.
294 -
295 -|**Size(bytes)**|**2**|**2**|**2**|**1**|**2**|**2**
296 -|**Value**|Bat|Temperature(DS18B20)|ADC|Digital in & Digital Interrupt|Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor|Humidity（SHT20)
297 -
298 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220627150949-6.png?rev=1.1||alt="image-20220627150949-6.png"]]
299 -
300 -
301 -==== 2.3.2.2  MOD~=2 (Distance Mode) ====
302 -
303 -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.
304 -
305 -|**Size(bytes)**|**2**|**2**|**2**|**1**|**2**|**2**
306 -|**Value**|BAT|(((
307 -Temperature(DS18B20)
308 -)))|ADC|Digital in & Digital Interrupt|(((
309 -Distance measure by:
310 -1) LIDAR-Lite V3HP
311 -Or
312 -2) Ultrasonic Sensor
313 -)))|Reserved
314 -
315 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656324539647-568.png?rev=1.1||alt="1656324539647-568.png"]]
316 -
317 -**Connection of LIDAR-Lite V3HP:**
318 -
319 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656324581381-162.png?rev=1.1||alt="1656324581381-162.png"]]
320 -
321 -**Connection to Ultrasonic Sensor:**
322 -
323 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656324598488-204.png?rev=1.1||alt="1656324598488-204.png"]]
324 -
325 -For the connection to TF-Mini or TF-Luna , MOD2 payload is as below:
326 -
327 -|**Size(bytes)**|**2**|**2**|**1**|**2**|**2**|**2**
328 -|**Value**|BAT|(((
329 -Temperature(DS18B20)
330 -)))|Digital in & Digital Interrupt|ADC|(((
331 -Distance measure by:1)TF-Mini plus LiDAR
332 -Or 
333 -2) TF-Luna LiDAR
334 -)))|Distance signal  strength
335 -
336 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656376779088-686.png?rev=1.1||alt="1656376779088-686.png"]]
337 -
338 -**Connection to [[TF-Mini plus>>url:http://en.benewake.com/product/detail/5c345cd0e5b3a844c472329b.html]] LiDAR(UART version):**
339 -
340 -Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
341 -
342 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656376795715-436.png?rev=1.1||alt="1656376795715-436.png"]]
343 -
344 -**Connection to [[TF-Luna>>url:http://en.benewake.com/product/detail/5e1c1fd04d839408076b6255.html]] LiDAR (UART version):**
345 -
346 -Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
347 -
348 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656376865561-355.png?rev=1.1||alt="1656376865561-355.png"]]
349 -
350 -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.
351 -
352 -
353 -==== 2.3.2.3  MOD~=3 (3 ADC + I2C) ====
354 -
355 -This mode has total 12 bytes. Include 3 x ADC + 1x I2C
356 -
357 -|=(((
280 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
281 +|=(% style="width: 90px;background-color:#D9E2F3" %)(((
358 358  **Size(bytes)**
359 -)))|=**2**|=**2**|=**2**|=**1**|=2|=2|=1
360 -|**Value**|ADC(Pin PA0)|ADC2(PA1)|ADC3 (PA4)|(((
361 -Digital in(PA12)&Digital Interrupt1(PB14)
362 -)))|Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor）|Humidity（SHT20 or SHT31)|Bat
363 -
364 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656377431497-975.png?rev=1.1||alt="1656377431497-975.png"]]
365 -
366 -
367 -==== 2.3.2.4 MOD~=4 (3 x DS18B20) ====
368 -
369 -This mode is supported in firmware version since v1.6.1. Software set to AT+MOD=4
370 -
371 -Hardware connection is as below,
372 -
373 -**( Note:**
374 -
375 -* 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.
376 -* In hardware version v2.1 no need to change R3 , R4, by default, they are 4.7k ohm already.
377 -
378 -See [[here>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H1.6A0HardwareChangelog]] for hardware changelog. **) **
379 -
380 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656377461619-156.png?rev=1.1||alt="1656377461619-156.png"]]
381 -
382 -This mode has total 11 bytes. As shown below:
383 -
384 -|**Size(bytes)**|**2**|**2**|**2**|**1**|**2**|**2**
385 -|**Value**|BAT|(((
386 -Temperature1
387 -(DS18B20)
388 -(PB3)
389 -)))|ADC|Digital in & Digital Interrupt|Temperature2
390 -(DS18B20)
391 -(PA9)|Temperature3
392 -(DS18B20)
393 -(PA10)
394 -
395 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656377606181-607.png?rev=1.1||alt="1656377606181-607.png"]]
396 -
397 -
398 -==== 2.3.2.5  MOD~=5(Weight Measurement by HX711) ====
399 -
400 -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.
401 -
402 -
403 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378224664-860.png?rev=1.1||alt="1656378224664-860.png"]]
404 -
405 -Each HX711 need to be calibrated before used. User need to do below two steps:
406 -
407 -1. Zero calibration. Don't put anything on load cell and run **AT+WEIGRE** to calibrate to Zero gram.
408 -1. Adjust calibration factor (default value 400): Put a known weight thing on load cell and run **AT+WEIGAP** to adjust the Calibration Factor.
409 -1. (((
410 -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)
283 +)))|=(% style="width: 80px;background-color:#D9E2F3" %)2|=(% style="width: 90px;background-color:#D9E2F3" %)4|=(% style="width:80px;background-color:#D9E2F3" %)1|=(% style="width: 80px;background-color:#D9E2F3" %)**2**|=(% style="width: 80px;background-color:#D9E2F3" %)2
284 +|(% style="width:99px" %)**Value**|(% style="width:69px" %)(((
285 +[[Battery>>||anchor="HBattery:"]]
286 +)))|(% style="width:130px" %)(((
287 +[[Unix TimeStamp>>||anchor="H2.5.2UnixTimeStamp"]]
288 +)))|(% style="width:91px" %)(((
289 +[[Alarm Flag>>||anchor="HAlarmFlag26MOD:"]]
290 +)))|(% style="width:103px" %)(((
291 +[[Temperature>>||anchor="HTemperature:"]]
292 +)))|(% style="width:80px" %)(((
293 +[[Humidity>>||anchor="HHumidity:"]]
411 411  )))
412 412  
413 -For example:
296 +==== (% style="color:#4472c4" %)**Battery**(%%) ====
414 414  
415 -**AT+WEIGAP =403.0**
298 +Sensor Battery Level.
416 416  
417 -Response:  Weight is 401 g
418 -
419 -Check the response of this command and adjust the value to match the real value for thing.
420 -
421 -|=(((
422 -**Size(bytes)**
423 -)))|=**2**|=**2**|=**2**|=**1**|=**4**|=2
424 -|**Value**|[[Bat>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.1BatteryInfo]]|[[Temperature(DS18B20)>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.2Temperature28DS18B2029]]|[[ADC>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.4AnalogueDigitalConverter28ADC29]]|[[Digital Input and Digitak Interrupt>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.3DigitalInput]]|Weight|Reserved
425 -
426 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220820120036-2.png?width=1003&height=469&rev=1.1||alt="image-20220820120036-2.png" height="469" width="1003"]]
427 -
428 -
429 -==== 2.3.2.6  MOD~=6 (Counting Mode) ====
430 -
431 -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.
432 -
433 -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.
434 -
435 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378351863-572.png?rev=1.1||alt="1656378351863-572.png"]]
436 -
437 -**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.
438 -
439 -|=**Size(bytes)**|=**2**|=**2**|=**2**|=**1**|=**4**
440 -|**Value**|[[BAT>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.1BatteryInfo]]|(((
441 -[[Temperature(DS18B20)>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.2Temperature28DS18B2029]]
442 -)))|[[ADC>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.4AnalogueDigitalConverter28ADC29]]|[[Digital in>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.3DigitalInput]]|Count
443 -
444 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378441509-171.png?rev=1.1||alt="1656378441509-171.png"]]
445 -
446 -
447 -==== 2.3.2.7  MOD~=7 (Three interrupt contact modes) ====
448 -
449 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220820140109-3.png?rev=1.1||alt="image-20220820140109-3.png"]]
450 -
451 -|=(((
452 -**Size(bytes)**
453 -)))|=**2**|=**2**|=**2**|=**1**|=**1**|=1|=2
454 -|**Value**|BAT|Temperature(DS18B20)|ADC|(((
455 -Digital in(PA12)&Digital Interrupt1(PB14)
456 -)))|Digital Interrupt2(PB15)|Digital Interrupt3(PA4)|Reserved
457 -
458 -==== 2.3.2.8  MOD~=8 （3ADC+1DS18B20） ====
459 -
460 -|=(((
461 -**Size(bytes)**
462 -)))|=**2**|=**2**|=**2**|=**1**|=**2**|=2
463 -|**Value**|BAT|Temperature(DS18B20)|(((
464 -ADC1(PA0)
465 -)))|(((
466 -Digital in
467 -& Digital Interrupt(PB14)
468 -)))|(((
469 -ADC2(PA1)
470 -)))|(((
471 -ADC3(PA4)
472 -)))
473 -
474 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823164903-2.png?rev=1.1||alt="image-20220823164903-2.png"]]
475 -
476 -
477 -==== 2.3.2.9  MOD~=9 (3DS18B20+ two Interrupt count mode) ====
478 -
479 -|=(((
480 -**Size(bytes)**
481 -)))|=**2**|=**2**|=**2**|=**1**|=**2**|=4|=4
482 -|**Value**|BAT|(((
483 -Temperature1(PB3)
484 -)))|(((
485 -Temperature2(PA9)
486 -)))|(((
487 -Digital in
488 -& Digital Interrupt(PA4)
489 -)))|(((
490 -Temperature3(PA10)
491 -)))|(((
492 -Count1(PB14)
493 -)))|(((
494 -Count2(PB15)
495 -)))
496 -
497 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823165322-3.png?rev=1.1||alt="image-20220823165322-3.png"]]
498 -
499 -**The newly added AT command is issued correspondingly:**
500 -
501 -**~ AT+INTMOD1** ** PB14**  pin：  Corresponding downlink:  **06 00 00 xx**
502 -
503 -**~ AT+INTMOD2**  **PB15** pin：  Corresponding downlink:**  06 00 01 xx**
504 -
505 -**~ AT+INTMOD3**  **PA4**  pin：  Corresponding downlink:  ** 06 00 02 xx**
506 -
507 -**AT+SETCNT=aa,bb** 
508 -
509 -When AA is 1, set the count of PB14 pin to BB Corresponding downlink：09 01 bb bb bb bb
510 -
511 -When AA is 2, set the count of PB15 pin to BB Corresponding downlink：09 02 bb bb bb bb
512 -
513 -
514 -
515 -=== 2.3.3  ​Decode payload ===
516 -
517 -While using TTN V3 network, you can add the payload format to decode the payload.
518 -
519 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378466788-734.png?rev=1.1||alt="1656378466788-734.png"]]
520 -
521 -The payload decoder function for TTN V3 are here:
522 -
523 -SN50v3 TTN V3 Payload Decoder:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>url:https://github.com/dragino/dragino-end-node-decoder]]
524 -
525 -
526 -==== 2.3.3.1 Battery Info ====
527 -
528 -Check the battery voltage for SN50v3.
529 -
530 530  Ex1: 0x0B45 = 2885mV
531 531  
532 532  Ex2: 0x0B49 = 2889mV
533 533  
534 534  
535 -==== 2.3.3.2  Temperature (DS18B20) ====
536 536  
537 -If there is a DS18B20 connected to PB3 pin. The temperature will be uploaded in the payload.
306 +==== (% style="color:#4472c4" %)**Temperature**(%%) ====
538 538  
539 -More DS18B20 can check the [[3 DS18B20 mode>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#2.3.4MOD3D4283xDS18B2029]]
540 -
541 -**Connection:**
542 -
543 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378573379-646.png?rev=1.1||alt="1656378573379-646.png"]]
544 -
545 545  **Example**:
546 546  
547 547  If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
... ... @@ -551,224 +551,26 @@
551 551  （FF3F & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
552 552  
553 553  
554 -==== 2.3.3.3 Digital Input ====
317 +==== (% style="color:#4472c4" %)**Humidity**(%%) ====
555 555  
556 -The digital input for pin PA12,
557 557  
558 -* When PA12 is high, the bit 1 of payload byte 6 is 1.
559 -* When PA12 is low, the bit 1 of payload byte 6 is 0.
320 +Read:0x(0197)=412    Value:  412 / 10=41.2, So 41.2%
560 560  
561 561  
562 -==== 2.3.3.4  Analogue Digital Converter (ADC) ====
323 +==== (% style="color:#4472c4" %)**Alarm Flag& MOD**(%%) ====
563 563  
564 -The ADC pins in LSN50 can measure range from 0~~Vbat, it use reference voltage from . If user need to measure a voltage > VBat, please use resistors to divide this voltage to lower than VBat, otherwise, it may destroy the ADC pin.
565 565  
566 -Note: minimum VBat is 2.5v, when batrrey lower than this value. Device won't be able to send LoRa Uplink.
567 -
568 -The ADC monitors the voltage on the PA0 line, in mV.
569 -
570 -Ex: 0x021F = 543mv,
571 -
572 -**~ Example1:**  Reading an Oil Sensor (Read a resistance value):
573 -
574 -
575 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220627172409-28.png?rev=1.1||alt="image-20220627172409-28.png"]]
576 -
577 -In the LSN50, we can use PB4 and PA0 pin to calculate the resistance for the oil sensor.
578 -
579 -
580 -**Steps:**
581 -
582 -1. Solder a 10K resistor between PA0 and VCC.
583 -1. Screw oil sensor's two pins to PA0 and PB4.
584 -
585 -The equipment circuit is as below:
586 -
587 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220627172500-29.png?rev=1.1||alt="image-20220627172500-29.png"]]
588 -
589 -According to above diagram:
590 -
591 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091043-4.png?rev=1.1||alt="image-20220628091043-4.png"]]
592 -
593 -So
594 -
595 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091344-6.png?rev=1.1||alt="image-20220628091344-6.png"]]
596 -
597 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091621-8.png?rev=1.1||alt="image-20220628091621-8.png"]] is the reading of ADC. So if ADC=0x05DC=0.9 v and VCC (BAT) is 2.9v
598 -
599 -The [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091702-9.png?rev=1.1||alt="image-20220628091702-9.png"]] 4.5K ohm
600 -
601 -Since the Bouy is linear resistance from 10 ~~ 70cm.
602 -
603 -The position of Bouy is [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091824-10.png?rev=1.1||alt="image-20220628091824-10.png"]] , from the bottom of Bouy.
604 -
605 -
606 -==== 2.3.3.5 Digital Interrupt ====
607 -
608 -Digital Interrupt refers to pin PB14, and there are different trigger methods. When there is a trigger, the SN50v3 will send a packet to the server.
609 -
610 -**~ Interrupt connection method:**
611 -
612 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379178634-321.png?rev=1.1||alt="1656379178634-321.png"]]
613 -
614 -**Example to use with door sensor :**
615 -
616 -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.
617 -
618 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379210849-860.png?rev=1.1||alt="1656379210849-860.png"]]
619 -
620 -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.
621 -
622 -**~ Below is the installation example:**
623 -
624 -Fix one piece of the magnetic sensor to the door and connect the two pins to LSN50 as follows:
625 -
626 -* (((
627 -One pin to LSN50's PB14 pin
628 -)))
629 -* (((
630 -The other pin to LSN50's VCC pin
631 -)))
632 -
633 -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.
634 -
635 -Door sensors have two types: ** NC (Normal close)** and **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.
636 -
637 -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.
638 -
639 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379283019-229.png?rev=1.1||alt="1656379283019-229.png"]]
640 -
641 -The above photos shows the two parts of the magnetic switch fitted to a door.
642 -
643 -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.
644 -
645 -The command is:
646 -
647 -**AT+INTMOD=1 **~/~/(more info about INMOD please refer** **[[**AT Command Manual**>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/&file=DRAGINO_LSN50_AT_Commands_v1.5.1.pdf]]**. **)
648 -
649 -Below shows some screen captures in TTN V3:
650 -
651 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379339508-835.png?rev=1.1||alt="1656379339508-835.png"]]
652 -
653 -In MOD=1, user can use byte 6 to see the status for door open or close. TTN V3 decoder is as below:
654 -
655 -door= (bytes[6] & 0x80)? "CLOSE":"OPEN";
656 -
657 -**Notice for hardware version LSN50 v1 < v1.3** (produced before 2018-Nov).
658 -
659 -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.
660 -
661 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379563303-771.png?rev=1.1||alt="1656379563303-771.png"]]
662 -
663 -
664 -==== 2.3.3.6 I2C Interface (SHT20) ====
665 -
666 -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.
667 -
668 -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 **AT+MOD=1 (default value).**
669 -
670 -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.
671 -
672 -Below is the connection to SHT20/ SHT31. The connection is as below:
673 -
674 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220902163605-2.png?rev=1.1||alt="image-20220902163605-2.png"]]
675 -
676 -The device will be able to get the I2C sensor data now and upload to IoT Server.
677 -
678 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379664142-345.png?rev=1.1||alt="1656379664142-345.png"]]
679 -
680 -Convert the read byte to decimal and divide it by ten.
681 -
682 682  **Example:**
683 683  
684 -Temperature:  Read:0116(H) = 278(D)  Value:  278 /10=27.8℃;
328 +If payload & 0x01 = 0x01  **~-~->** This is an Alarm Message
685 685  
686 -Humidity:    Read:0248(H)=584(D)  Value:  584 / 10=58.4, So 58.4%
330 +If payload & 0x01 = 0x00  **~-~->** This is a normal uplink message, no alarm
687 687  
688 -If you want to use other I2C device, please refer the SHT20 part source code as reference.
332 +If payload >> 2 = 0x00  **~-~->**  means MOD=1, This is a sampling uplink message
689 689  
334 +If payload >> 2 = 0x31  **~-~->**  means MOD=31, this message is a reply message for polling, this message contains the alarm settings. see [[this link>>path:#HPolltheAlarmsettings:]] for detail. 
690 690  
691 -==== 2.3.3.7  ​Distance Reading ====
692 692  
693 -Refer [[Ultrasonic Sensor section>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.8UltrasonicSensor]].
694 -
695 -
696 -==== 2.3.3.8 Ultrasonic Sensor ====
697 -
698 -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]]
699 -
700 -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.
701 -
702 -The picture below shows the connection:
703 -
704 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656380061365-178.png?rev=1.1||alt="1656380061365-178.png"]]
705 -
706 -Connect to the LSN50 and run **AT+MOD=2** to switch to ultrasonic mode (ULT).
707 -
708 -The ultrasonic sensor uses the 8^^th^^ and 9^^th^^ byte for the measurement value.
709 -
710 -**Example:**
711 -
712 -Distance:  Read: 0C2D(Hex) = 3117(D)  Value:  3117 mm=311.7 cm
713 -
714 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656384895430-327.png?rev=1.1||alt="1656384895430-327.png"]]
715 -
716 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656384913616-455.png?rev=1.1||alt="1656384913616-455.png"]]
717 -
718 -You can see the serial output in ULT mode as below:
719 -
720 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656384939855-223.png?rev=1.1||alt="1656384939855-223.png"]]
721 -
722 -**In TTN V3 server:**
723 -
724 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656384961830-307.png?rev=1.1||alt="1656384961830-307.png"]]
725 -
726 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656384973646-598.png?rev=1.1||alt="1656384973646-598.png"]]
727 -
728 -==== 2.3.3.9  Battery Output - BAT pin ====
729 -
730 -The BAT pin of SN50v3 is connected to the Battery directly. If users want to use BAT pin to power an external sensor. User need to make sure the external sensor is of low power consumption. Because the BAT pin is always open. If the external sensor is of high power consumption. the battery of SN50v3-LB will run out very soon.
731 -
732 -
733 -==== 2.3.3.10  +5V Output ====
734 -
735 -SN50v3 will enable +5V output before all sampling and disable the +5v after all sampling. 
736 -
737 -The 5V output time can be controlled by AT Command.
738 -
739 -**AT+5VT=1000**
740 -
741 -Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.
742 -
743 -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.
744 -
745 -
746 -
747 -==== 2.3.3.11  BH1750 Illumination Sensor ====
748 -
749 -MOD=1 support this sensor. The sensor value is in the 8^^th^^ and 9^^th^^ bytes.
750 -
751 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628110012-11.jpeg?rev=1.1||alt="image-20220628110012-11.jpeg"]]
752 -
753 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628110012-12.png?rev=1.1||alt="image-20220628110012-12.png"]]
754 -
755 -
756 -==== 2.3.3.12  Working MOD ====
757 -
758 -The working MOD info is contained in the Digital in & Digital Interrupt byte (7^^th^^ Byte).
759 -
760 -User can use the 3^^rd^^ ~~ 7^^th^^  bit of this byte to see the working mod:
761 -
762 -Case 7^^th^^ Byte >> 2 & 0x1f:
763 -
764 -* 0: MOD1
765 -* 1: MOD2
766 -* 2: MOD3
767 -* 3: MOD4
768 -* 4: MOD5
769 -* 5: MOD6
770 -
771 -
772 772  == 2.4 Payload Decoder file ==
773 773  
774 774  

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