Version 15.1 by Xiaoling on 2023/02/01 09:08
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Xiaoling 2.2 1 (% style="text-align:center" %)
2 [[image:image-20230131183542-1.jpeg||height="694" width="694"]]
3
4 **Table of Contents：**
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Xiaoling 9.2 19 = 1. Introduction =
Xiaoling 2.2 20
Xiaoling 9.2 21 == 1.1 ​What is SDI-12 to LoRaWAN Converter ==
Xiaoling 2.2 22
23
Xiaoling 9.2 24 The Dragino **SDI-12-LB** is a **SDI-12 to LoRaWAN Converter **designed for Smart Agriculture solution.
25
Xiaoling 2.2 26 SDI-12 (Serial Digital Interface at 1200 baud) is an asynchronous [[serial communications>>url:https://en.wikipedia.org/wiki/Serial_communication]] protocol for intelligent sensors that monitor environment data. SDI-12 protocol is widely used in Agriculture sensor and Weather Station sensors.
27
28 **SDI-12-LB** has SDI-12 interface and support 12v output to power external SDI-12 sensor. It can get the environment data from SDI-12 sensor and sends out the data via LoRaWAN wireless protocol.
29
30 The LoRa wireless technology used in **SDI-12-LB** allows device 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.
31
32 **SDI-12-LB** is powered by **8500mAh Li-SOCI2 battery**, it is designed for long term use up to 5 years.
33
34 Each **SDI-12-LB** is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
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36
Xiaoling 9.2 37 [[image:image-20230201084414-1.png||height="464" width="1108"]]
Xiaoling 2.2 38
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43
Xiaoling 9.2 44 == ​1.2 Features ==
45
46
Xiaoling 2.2 47 * LoRaWAN 1.0.3 Class A
48 * Ultra-low power consumption
49 * Controllable 5v and 12v output to power external sensor
50 * SDI-12 Protocol to connect to SDI-12 Sensor
51 * Monitor Battery Level
52 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
53 * Support Bluetooth v5.1 and LoRaWAN remote configure.
54 * Support wireless OTA update firmware
55 * Uplink on periodically
56 * Downlink to change configure
57 * 8500mAh Battery for long term use
58
Xiaoling 9.2 59 == 1.3 Specification ==
Xiaoling 2.2 60
61
62 **Micro Controller:**
63
64 * MCU: 48Mhz ARM
65 * Flash: 256KB
66 * RAM: 64KB
67
68 **Common DC Characteristics:**
69
70 * Supply Voltage: 2.5v ~~ 3.6v
71 * Operating Temperature: -40 ~~ 85°C
72
73 **LoRa Spec:**
74
75 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
76 * Max +22 dBm constant RF output vs.
77 * RX sensitivity: down to -139 dBm.
78 * Excellent blocking immunity
79
80 **Current Input Measuring :**
81
82 * Range: 0 ~~ 20mA
83 * Accuracy: 0.02mA
84 * Resolution: 0.001mA
85
86 **Voltage Input Measuring:**
87
88 * Range: 0 ~~ 30v
89 * Accuracy: 0.02v
90 * Resolution: 0.001v
91
92 **Battery:**
93
94 * Li/SOCI2 un-chargeable battery
95 * Capacity: 8500mAh
96 * Self-Discharge: <1% / Year @ 25°C
97 * Max continuously current: 130mA
98 * Max boost current: 2A, 1 second
99
100 **Power Consumption**
101
102 * Sleep Mode: 5uA @ 3.3v
103 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
104
Xiaoling 9.2 105 == 1.4 Connect to SDI-12 Sensor ==
Xiaoling 2.2 106
107
108
Xiaoling 9.2 109 [[image:1675212538524-889.png]]
Xiaoling 2.2 110
111
Xiaoling 9.2 112 == 1.5 Sleep mode and working mode ==
Xiaoling 2.2 113
114
Xiaoling 9.2 115 **Deep Sleep Mode: **Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.
Xiaoling 2.2 116
Xiaoling 9.2 117 **Working Mode: **In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.
Xiaoling 2.2 118
119
Xiaoling 9.2 120 == 1.6 Button & LEDs ==
Xiaoling 2.2 121
122
Xiaoling 9.2 123 [[image:1675212633011-651.png]]
Xiaoling 2.2 124
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126
Xiaoling 9.2 127 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
128 |=(% style="width: 167px;" %)**Behavior on ACT**|=(% style="width: 117px;" %)**Function**|=(% style="width: 225px;" %)**Action**
129 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
130 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
Xiaoling 2.2 131 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
132 )))
Xiaoling 9.2 133 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
134 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network.
135 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
Xiaoling 2.2 136 Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.
137 )))
Xiaoling 9.2 138 |(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means PS-LB is in Deep Sleep Mode.
Xiaoling 2.2 139
Xiaoling 9.2 140 == 1.7 Pin Mapping ==
Xiaoling 2.2 141
142
Xiaoling 9.2 143 [[image:1675213198663-754.png]]
Xiaoling 2.2 144
145
Xiaoling 9.2 146 == 1.8 BLE connection ==
Xiaoling 2.2 147
Xiaoling 9.2 148
Xiaoling 2.2 149 SDI-12-LB support BLE remote configure.
150
151 BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:
152
153 * Press button to send an uplink
154 * Press button to active device.
155 * Device Power on or reset.
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157 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
158
159
Xiaoling 9.2 160 == 1.9 Mechanical ==
Xiaoling 2.2 161
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Xiaoling 9.2 166 [[image:image-20230201090139-2.png]]
Xiaoling 2.2 167
Xiaoling 9.2 168 [[image:image-20230201090139-3.png]]
Xiaoling 2.2 169
Xiaoling 9.2 170 [[image:image-20230201090139-4.png]]
Xiaoling 2.2 171
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Xiaoling 9.2 173
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176
Xiaoling 2.2 177 1. Configure SDI-12 to connect to LoRaWAN network
178 11. How it works
179
180 The SDI-12-LB 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 need to input the OTAA keys in the LoRaWAN IoT server and activate the SDI-12-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
181
182
183 1.
184 11. ​Quick guide to connect to LoRaWAN server (OTAA)
185
186 Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.
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188
189 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image008.png]]
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191
192 The LPS8V2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
193
194
195 **Step 1**: Create a device in TTN with the OTAA keys from SDI-12-LB.
196
197 Each SDI-12-LB is shipped with a sticker with the default device EUI as below:
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199
200 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image009.png]]
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205
206 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
207
208
209 **Register the device**
210
211 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image010.png]]
212
213
214 **Add APP EUI and DEV EUI**
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216
217 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image011.png]]
218
219
220 **Add APP EUI in the application**
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223 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image012.png]]
224
225
226 **Add APP KEY**
227
228 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
229
230
231 **Step 2**: Activate on SDI-12-LB
232
233
234 Press the button for 5 seconds to activate the SDI-12-LB.
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236
237 **Green led** will fast blink 5 times, device will enter **OTA mode** for 3 seconds. And then start to JOIN LoRaWAN network. **Green led** will solidly turn on for 5 seconds after joined in network.
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239
240 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
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Xiaoling 9.2 246 1.
Xiaoling 2.2 247 11. ​SDI-12 Related Commands
248
249 User need to configure SDI-12-LB to communicate with SDI-12 sensors otherwise the uplink payload will only include a few bytes.
250
251
252 1.
253 11.
254 111. Basic SDI-12 debug command
255
256 User can run some basic SDI-12 command to debug the connection to the SDI-12 sensor. These commands can be sent via AT Command or LoRaWAN downlink command.
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259 If SDI-12 sensor return value after get these commands, //SDI-12-LB// will uplink the return on FPORT=100, otherwise, if there is no response from SDI-12 sensor. //SDI-12-LB// will uplink NULL (0x 4E 55 4C 4C) to server.
260
261
262 The following is the display information on the serial port and the server.
263
264 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
265
266 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
267
268 al!  ~-~- Get SDI-12 sensor Identification
269
270 * AT Command: AT+ADDRI=aa
271 * LoRaWAN Downlink(prefix 0xAA00): AA 00 aa
272
273 Parameter: aa: ASCII value of SDI-12 sensor address in downlink or HEX value in AT Command)
274
275 Example : AT+ADDRI=0 ( Equal to downlink: 0x AA 00 30)
276
277
278
279 The following is the display information on the serial port and the server.
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281
282 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
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284 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
285
286
287 aM!,aMC!, aM1!- aM9!, aMC1!- aMC9!
288
289 aM!: Start Non-Concurrent Measurement
290
291 aMC!: Start Non-Concurrent Measurement – Request CRC
292
293 aM1!- aM9!: Additional Measurements
294
295 aMC1!- aMC9!: Additional Measurements – Request CRC
296
297
298 * AT Command : AT+ADDRM=0,1,0,1
299 * LoRaWAN Downlink(prefix 0xAA01): 0xAA 01 30 01 00 01
300
301 Downlink：AA 01 aa bb cc dd
302
303 aa: SDI-12 sensor address.
304
305 bb: 0: no CRC, 1: request CRC
306
307 cc: 1-9: Additional Measurement, 0: no additional measurement
308
309 dd: delay (in second) to send **aD0!** to get return.
310
311
312 The following is the display information on the serial port and the server.
313
314 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
315
316 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
317
318
319
320 aC!, aCC!,  aC1!- aC9!,  aCC1!- aCC9!
321
322 aC!: Start Concurrent Measurement
323
324 aCC!: Start Concurrent Measurement – Request CRC
325
326 aC1!- aC9!: Start Additional Concurrent Measurements
327
328 aCC1!- aCC9!: Start Additional Concurrent Measurements – Request CRC
329
330
331 * AT Command : AT+ADDRC=0,1,0,1 
332
333 * LoRaWAN Downlink(0xAA02): 0xAA 02 30 01 00 01
334
335 Downlink: AA 02 aa bb cc dd
336
337 aa: SDI-12 sensor address.
338
339 bb: 0: no CRC, 1: request CRC
340
341 cc: 1-9: Additional Measurement, 0: no additional measurement
342
343 dd: delay (in second) to send **aD0!** to get return.
344
345
346 The following is the display information on the serial port and the server.
347
348 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]]
349
350 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
351
352
353 aR0!- aR9!,  aRC0!- aRC9!
354
355 Start Continuous Measurement
356
357 Start Continuous Measurement – Request CRC
358
359
360 * AT Command : AT+ADDRR=0,1,0,1 
361 * LoRaWAN Downlink (0xAA 03): 0xAA 03 30 01 00 01
362
363 Downlink: AA 03 aa bb cc dd
364
365 aa: SDI-12 sensor address.
366
367 bb: 0: no CRC, 1: request CRC
368
369 cc: 1-9: Additional Measurement, 0: no additional measurement
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371 dd: delay (in second) to send **aD0!** to get return.
372
373
374 The following is the display information on the serial port and the server.
375
376 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
377
378 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
379
Xiaoling 9.2 380 1.
Xiaoling 2.2 381 11.
382 111. Advance SDI-12 Debug command
383
384 This command can be used to debug all SDI-12 command.
385
386
387 LoRaWAN Downlink: A8 aa xx xx xx xx bb cc
388
389 (aa: total SDI-12 command length)
390
391 (xx: SDI-12 command)
392
393 (bb: Delay to wait for return)
394
395 (cc: 0: don’t uplink return to LoRaWAN, 1: Uplink return to LoRaWAN on FPORT=100)
396
397
398 Example: AT+CFGDEV =0RC0!,1
399
400 0RC0!: SDI-12 Command,
401
402 1: Delay 1 second.  ( 0: 810 mini-second)
403
404
405 Equal Downlink: 0xA8 05 30 52 43 30 21 01 01
406
407
408 The following is the display information on the serial port and the server.
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410
411 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
412
413 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
414
Xiaoling 9.2 415 1.
Xiaoling 2.2 416 11.
417 111. Convert ASCII to String
418
419 This command is used to convert between ASCII and String format.
420
421
422 AT+CONVFORM ( Max length: 80 bytes)
423
424 Example:
425
426 1)AT+CONVFORM=0,string   Convert String from String to ASCII
427
428 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
429
430
431 2)AT+CONVFORM=1,ASCII   Convert ASCII to String.
432
433 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
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435
436
Xiaoling 9.2 437 1.
Xiaoling 2.2 438 11.
439 111. Define periodically SDI-12 commands and uplink.
440
441 AT+COMMANDx & AT+DATACUTx
442
443 User can define max 15 SDI-12 Commands (AT+COMMAND1 ~~ AT+COMMANDF). On each uplink period (TDC time, default 20 minutes), SDI-12-LB will send these SDI-12 commands and wait for return from SDI-12 sensors. SDI-12-LB will then combine these returns and uplink via LoRaWAN.
444
445
446 * ** AT Command:**
447
448 **AT+COMMANDx=var1,var2,var3,var4.**
449
450 var1: SDI-12 command , for example: 0RC0!
451
452 var2: Wait timeout for return. (unit: second)
453
454 var3: Whether to send //addrD0!// to get return after var2 timeout. 0: Don’t Send //addrD0!//; 1: Send //addrD0!//.
455
456 var4: validation check for return. If return invalid, SDI-12-LB will resend this command. Max 2 retries.
457
458 0  No validation check;
459
460 1  Check if return chars are printable char(0x20 ~~ 0x7E);
461
462 2  Check if there is return from SDI-12 sensor
463
464 3  Check if return pass CRC check ( SDI-12 command var1 must include CRC request);
465
466
467 Each AT+COMMANDx is followed by a **AT+DATACUT** command. AT+DATACUT command is used to take the useful string from the SDI-12 sensor so the final payload will have the minimum length to uplink.
468
469
470 **AT+DATACUTx** : This command defines how to handle the return from AT+COMMANDx, max return length is 100 bytes.
471
472 |(((
473 AT+DATACUTx=a,b,c
474
475 a: length for the return of AT+COMMAND
476
477 b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.
478
479 c: define the position for valid value. 
480 )))
481
482 For example, if return from AT+COMMAND1 is “013METER   TER12 112T12-00024895” ,. Below AT+DATACUT1 will get different result to combine payload:
483
484
485 |AT+DATACUT1 value|Final Result to combine Payload
486 |34,1,1+2+3|0D 00 01 30 31 33
487 |34,2,1~~8+12~~16|0D 00 01 30 31 33 4D 45 54 45 52 54 45 52 31 32
488 |34,2,1~~34|0D 00 01 30 31 33 4D 45 54 45 52 20 20 20 54 45 52 31 32 20 31 31 32 54 31 32 2D 30 30 30 32 34 38 39 35 0D 0A
489
490 * ** Downlink Payload:**
491
492 **0xAF**  downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
493
494
495 **Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
496
497
498 Format: ** AF MM NN LL XX XX XX XX YY**
499
500 Where:
501
502 * MM: the AT+COMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
503 * NN:  1: set the AT+DATACUT value ; 2: set the AT+DATACUT value.
504 * LL:  The length of AT+COMMAND or AT+DATACUT command
505 * XX XX XX XX: AT+COMMAND or AT+DATACUT command
506 * YY:  If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command. 
507
508 Example:
509
Xiaoling 9.2 510 **AF 03 01 07 30 4D 43 21 01 01 01 00**: Same as AT+COMMAND3=**0MC!**,** 1**,** 1**,** 1**
Xiaoling 2.2 511
512 **AF 03 02 06 10 01 05 06 09 0A 00**: Same as AT+DATACUT3=**16**,**1**,**5+6+9+10**
513
514 **AF 03 02 06 0B 02 05 07 08 0A 00**: Same as AT+DATACUT3=**11**,**2**,**5~~7+8~~10**
515
516
517 **Clear SDI12 Command**
518
519 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
520
521
522 * ** AT Command:**
523
524 **~ AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
525
526
527 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
528
529
530 * ** Downlink Payload:**
531
532 **~ 0x09 aa bb**  same as AT+CMDEAR=aa,bb
533
534
535
536
537 **command combination**
538
539 Below shows a screen shot how the results combines together to a uplink payload.
540
541 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
542
543
544 If user don’t want to use DATACUT for some command, he simply want to uplink all returns. AT+ALLDATAMOD can be set to 1.
545
546 **AT+ALLDATAMOD** will simply get all return and don’t do CRC check as result for SDI-12 command. AT+DATACUTx command has higher priority, if AT+DATACUTx has been set, AT+ALLDATAMOD will be ignore for this SDI-12 command.
547
548
549 For example: as below photo, AT+ALLDATAMOD=1, but AT+DATACUT1 has been set, AT+DATACUT1 will be still effect the result.
550
551
552 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
553
554
555 If AT+ALLDATAMOD=1, **FX,X** will be added in the payload, FX specify which command is used and X specify the length of return. for example in above screen, F1 05 means the return is from AT+COMMAND1 and the return is 5 bytes.
556
557
558
559 **Compose Uplink**
560
561 **AT+DATAUP=0**
562
563 Compose the uplink payload with value returns in sequence and send with A SIGNLE UPLINK.
564
565 Final Payload is Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
566
567 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
568
569
570 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
571
572
573 **AT+DATAUP=1**
574
575 Compose the uplink payload with value returns in sequence and send with Multiply UPLINKs.
576
577 Final Payload is
578
579 **Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
580
581 1. Battery Info (2 bytes): Battery voltage
582 1. PAYVER (1 byte): Defined by AT+PAYVER
583 1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
584 1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
585 1. DATA: Valid value: max 6 bytes(US915 version here, Notice*!) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
586
587 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]]
588
589
590 **Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:**
591
592 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
593
594 * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
595
596 * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
597
598 ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
599
600 *** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
601
602 **~ When AT+DATAUP=1 and AT+ADR=0, the maximum number of bytes of each payload is determined by the DR value.**
603
604 1.
605 11. Uplink Payload
606
607 Uplink payloads have two types:
608
609 * Distance Value: Use FPORT=2
610 * Other control commands: Use other FPORT fields.
611
612 The application server should parse the correct value based on FPORT settings.
613
614
615 1.
616 11.
617 111. Device Payload, FPORT=5
618
619 Include device configure status. Once SDI-12-LB Joined the network, it will uplink this message to the server.
620
621
622 Users can also use the downlink command(0x26 01) to ask SDI-12-LB to resend this uplink.
623
624
625 |(% colspan="6" %)**Device Status (FPORT=5)**
626 |**Size (bytes)**|**1**|**2**|**1**|**1**|**2**
627 |**Value**|Sensor Model|Firmware Version|Frequency Band|Sub-band|BAT
628
629 Example parse in TTNv3
630
631 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]]
632
633 **Sensor Model**: For SDI-12-LB, this value is 0x17
634
635 **Firmware Version**: 0x0100, Means: v1.0.0 version
636
637 **Frequency Band**:
638
639 *0x01: EU868
640
641 *0x02: US915
642
643 *0x03: IN865
644
645 *0x04: AU915
646
647 *0x05: KZ865
648
649 *0x06: RU864
650
651 *0x07: AS923
652
653 *0x08: AS923-1
654
655 *0x09: AS923-2
656
657 *0x0a: AS923-3
658
659 *0x0b: CN470
660
661 *0x0c: EU433
662
663 *0x0d: KR920
664
665 *0x0e: MA869
666
667
668 **Sub-Band**:
669
670 AU915 and US915:value 0x00 ~~ 0x08
671
672 CN470: value 0x0B ~~ 0x0C
673
674 Other Bands: Always 0x00
675
676
677 **Battery Info**:
678
679 Check the battery voltage.
680
681 Ex1: 0x0B45 = 2885mV
682
683 Ex2: 0x0B49 = 2889mV
684
685
686 1.
687 11.
688 111. Uplink Payload, FPORT=2
689
690 There are different cases for uplink. See below
691
692 * SDI-12 Debug Command return: FPORT=100
693
694 * Periodically Uplink: FPORT=2
695
696 |(((
697 **Size**
698
699 **(bytes)**
700 )))|**2**|**1**|**Length depends on the return from the commands**
701 |**Value**|(((
702 Battery(mV)
703
704 &
705
706 Interrupt_Flag
707 )))|[[PAYLOAD_VER>>path:#Probe_Model]]|(((
708 If the valid payload is too long and exceed the maximum support
709
710 Payload length in server,server will show payload not provided in the LoRaWAN server.
711 )))
712
713 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]]
714
715
716
Xiaoling 9.2 717 1.
Xiaoling 2.2 718 11.
719 111. Battery Info
720
721 Check the battery voltage for SDI-12-LB.
722
723 Ex1: 0x0B45 = 2885mV
724
725 Ex2: 0x0B49 = 2889mV
726
727
728 1.
729 11.
730 111. Interrupt Pin
731
732 This data field shows if this packet is generated by **Interrupt Pin** or not. [[Click here>>path:#Int_mod]] for the hardware and software set up. Note: The Internet Pin is a separate pin in the screw terminal. See [[pin mapping>>path:#pins]].
733
734
735 Example:
736
737 Ex1: 0x0B45:0x0B&0x80= 0x00    Normal uplink packet.
738
739 Ex2: 0x8B49:0x8B&0x80= 0x80    Interrupt Uplink Packet.
740
741
742 1.
743 11.
744 111. Payload version
745
746
747
748
749
750 1.
751 11.
752 111. ​Decode payload in The Things Network
753
754 While using TTN network, you can add the payload format to decode the payload.
755
756 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]]
757
758
759 There is no fix payload decoder in LoRaWAN server because the SDI-12 sensors returns are different. User need to write the decoder themselves for their case.
760
761
762 下面的解码生成超链接放进去.
763
764 function Decoder(bytes, port) {
765
766 if(port==5)
767
768 {
769
770 var freq_band;
771
772 var sub_band;
773
774 var sensor;
775
776
777 if(bytes[0]==0x17)
778
779 sensor= "SDI12-LB";
780
781
782 var firm_ver= (bytes[1]&0x0f)+'.'+(bytes[2]>>4&0x0f)+'.'+(bytes[2]&0x0f);
783
784
785 if(bytes[3]==0x01)
786
787 freq_band="EU868";
788
789 else if(bytes[3]==0x02)
790
791 freq_band="US915";
792
793 else if(bytes[3]==0x03)
794
795 freq_band="IN865";
796
797 else if(bytes[3]==0x04)
798
799 freq_band="AU915";
800
801 else if(bytes[3]==0x05)
802
803 freq_band="KZ865";
804
805 else if(bytes[3]==0x06)
806
807 freq_band="RU864";
808
809 else if(bytes[3]==0x07)
810
811 freq_band="AS923";
812
813 else if(bytes[3]==0x08)
814
815 freq_band="AS923_1";
816
817 else if(bytes[3]==0x09)
818
819 freq_band="AS923_2";
820
821 else if(bytes[3]==0x0A)
822
823 freq_band="AS923_3";
824
825 else if(bytes[3]==0x0F)
826
827 freq_band="AS923_4";
828
829 else if(bytes[3]==0x0B)
830
831 freq_band="CN470";
832
833 else if(bytes[3]==0x0C)
834
835 freq_band="EU433";
836
837 else if(bytes[3]==0x0D)
838
839 freq_band="KR920";
840
841 else if(bytes[3]==0x0E)
842
843 freq_band="MA869";
844
845
846 if(bytes[4]==0xff)
847
848 sub_band="NULL";
849
850 else
851
852 sub_band=bytes[4];
853
854
855 var bat= (bytes[5]<<8 | bytes[6])/1000;
856
857
858 return {
859
860 SENSOR_MODEL:sensor,
861
862 FIRMWARE_VERSION:firm_ver,
863
864 FREQUENCY_BAND:freq_band,
865
866 SUB_BAND:sub_band,
867
868 BAT:bat,
869
870 }
871
872 }
873
874 else if(port==100)
875
876 {
877
878 var datas_sum={};
879
880 for(var j=0;j<bytes.length;j++)
881
882 {
883
884 var datas= String.fromCharCode(bytes[j]);
885
886 if(j=='0')
887
888 datas_sum.datas_sum=datas;
889
890 else
891
892 datas_sum.datas_sum+=datas;
893
894 }
895
896
897 return datas_sum;
898
899 }
900
901 else
902
903 {
904
905 var decode={};
906
907 decode.EXTI_Trigger= (bytes[0] & 0x80)? "TRUE":"FALSE";  
908
909 decode.BatV= ((bytes[0]<<8 | bytes[1])&0x7FFF)/1000;
910
911 decode.Payver= bytes[2];
912
913 for(var i=3;i<bytes.length;i++)
914
915 {
916
917 var data= String.fromCharCode(bytes[i]);
918
919 if(i=='3')
920
921 decode.data_sum=data;
922
923 else
924
925 decode.data_sum+=data;
926
927 }
928
929 return decode; 
930
931 }
932
933
934 }
935
936
937 1.
938 11. Uplink Interval
939
940 The SDI-12-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link:
941
942 [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands#Change_Uplink_Interval>>url:http://wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands#Change_Uplink_Interval]]
943
944
945
946 1.
947 11. Frequency Plans
948
949 The SDI12-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
950
951
952 [[https:~~/~~/wiki.dragino.com/index.php?title=End_Device_Frequency_Band>>url:https://wiki.dragino.com/index.php?title=End_Device_Frequency_Band]]
953
954
955
956 1.
957 11. Firmware Change Log
958
959 **Firmware download link:**
960
961 [[https:~~/~~/www.dropbox.com/sh/gf1glloczbzz19h/AABbuYI4WY6VdAmpXo6o1V2Ka?dl=0>>url:https://www.dropbox.com/sh/gf1glloczbzz19h/AABbuYI4WY6VdAmpXo6o1V2Ka?dl=0]]
962
963
964
965 1. Configure SDI-12-LB via AT Command or LoRaWAN Downlink
966
967 Use can configure SDI-12-LB via AT Command or LoRaWAN Downlink.
968
969 * AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
970 * LoRaWAN Downlink instruction for different platforms:
971
972 [[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server>>url:http://wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server]]
973
974
975 There are two kinds of commands to configure SDI-12-LB, they are:
976
977 * **General Commands**.
978
979 These commands are to configure:
980
981 * General system settings like: uplink interval.
982 * LoRaWAN protocol & radio related command.
983
984 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
985
986 [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
987
988
989 * **Commands special design for SDI-12-LB**
990
991 These commands only valid for SDI-12-LB, as below:
992
993
994
995 1.
996 11. Set Transmit Interval Time
997
998 Feature: Change LoRaWAN End Node Transmit Interval.
999
1000 **AT Command: AT+TDC**
1001
1002 |**Command Example**|**Function**|**Response**
1003 |AT+TDC=?|Show current transmit Interval|(((
1004 30000
1005
1006 OK
1007
1008 the interval is 30000ms = 30s
1009 )))
1010 |AT+TDC=60000|Set Transmit Interval|(((
1011 OK
1012
1013 Set transmit interval to 60000ms = 60 seconds
1014 )))
1015
1016 **Downlink Command: 0x01**
1017
1018 Format: Command Code (0x01) followed by 3 bytes time value.
1019
1020 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1021
1022 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1023 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1024
1025 1.
1026 11. Set Interrupt Mode
1027
1028 Feature, Set Interrupt mode for GPIO_EXIT.
1029
1030 **AT Command: AT+INTMOD**
1031
1032 |**Command Example**|**Function**|**Response**
1033 |AT+INTMOD=?|Show current interrupt mode|(((
1034 0
1035
1036 OK
1037
1038 the mode is 0 = No interruption
1039 )))
1040 |AT+INTMOD=2|(((
1041 Set Transmit Interval
1042
1043 1. (Disable Interrupt),
1044 1. (Trigger by rising and falling edge),
1045 1. (Trigger by falling edge)
1046 1. (Trigger by rising edge)
1047 )))|OK
1048
1049 **Downlink Command: 0x06**
1050
1051 Format: Command Code (0x06) followed by 3 bytes.
1052
1053 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1054
1055 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1056 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1057
1058 1.
1059 11. Set the output time
1060
1061 Feature, Control the output 3V3 , 5V or 12V.
1062
1063 **AT Command: AT+3V3T**
1064
1065 |**Command Example**|**Function**|**Response**
1066 |AT+3V3T=?|Show 3V3 open time.|(((
1067 0
1068
1069 OK
1070 )))
1071 |AT+3V3T=0|Normally open 3V3 power supply.|(((
1072 OK
1073
1074 default setting
1075 )))
1076 |AT+3V3T=1000|Close after a delay of 1000 milliseconds.|(((
1077 OK
1078
1079
1080 )))
1081 |AT+3V3T=65535|Normally closed 3V3 power supply.|(((
1082 OK
1083
1084
1085 )))
1086
1087 **AT Command: AT+5VT**
1088
1089 |**Command Example**|**Function**|**Response**
1090 |AT+5VT=?|Show 5V open time.|(((
1091 0
1092
1093 OK
1094 )))
1095 |AT+5VT=0|Normally closed 5V power supply.|(((
1096 OK
1097
1098 default setting
1099 )))
1100 |AT+5VT=1000|Close after a delay of 1000 milliseconds.|(((
1101 OK
1102
1103
1104 )))
1105 |AT+5VT=65535|Normally open 5V power supply.|(((
1106 OK
1107
1108
1109 )))
1110
1111 **AT Command: AT+12VT**
1112
1113 |**Command Example**|**Function**|**Response**
1114 |AT+12VT=?|Show 12V open time.|(((
1115 0
1116
1117 OK
1118 )))
1119 |AT+12VT=0|Normally closed 12V power supply.|OK
1120 |AT+12VT=500|Close after a delay of 500 milliseconds.|(((
1121 OK
1122
1123
1124 )))
1125
1126 **Downlink Command: 0x07**
1127
1128 Format: Command Code (0x07) followed by 3 bytes.
1129
1130 The first byte is which power, the second and third bytes are the time to turn on.
1131
1132 * Example 1: Downlink Payload: 070101F4  -> AT+3V3T=500
1133 * Example 2: Downlink Payload: 0701FFFF   -> AT+3V3T=65535
1134 * Example 3: Downlink Payload: 070203E8  -> AT+5VT=1000
1135 * Example 4: Downlink Payload: 07020000  -> AT+5VT=0
1136 * Example 5: Downlink Payload: 070301F4  -> AT+12VT=500
1137 * Example 6: Downlink Payload: 07030000  -> AT+12VT=0
1138
1139 1.
1140 11. Set the all data mode
1141
1142 Feature, Set the all data mode.
1143
1144 **AT Command: AT+ALLDATAMOD**
1145
1146 |**Command Example**|**Function**|**Response**
1147 |AT+ALLDATAMOD=?|Show current all data mode|(((
1148 0
1149
1150
1151 OK
1152 )))
1153 |AT+ALLDATAMOD=1|Set all data mode is 1.|OK
1154
1155 **Downlink Command: 0xAB**
1156
1157 Format: Command Code (0xAB) followed by 1 bytes.
1158
1159 * Example 1: Downlink Payload: AB 00 ~/~/ AT+ALLDATAMOD=0
1160 * Example 2: Downlink Payload: AB 01 ~/~/ AT+ALLDATAMOD=1
1161
1162 1.
1163 11. Set the splicing payload for uplink
1164
1165 Feature, splicing payload for uplink.
1166
1167 **AT Command: AT+DATAUP**
1168
1169 |**Command Example**|**Function**|**Response**
1170 |AT+DATAUP =?|Show current splicing payload for uplink mode|(((
1171 0
1172
1173
1174 OK
1175 )))
1176 |AT+DATAUP =0|(((
1177 Set splicing payload for uplink mode is 0.
1178
1179
1180 )))|(((
1181 OK
1182
1183
1184 )))
1185 |AT+DATAUP =1|Set splicing payload for uplink mode is 1 , and the each splice uplink is sent sequentially.|OK
1186 |AT+DATAUP =1,20000|(((
1187 Set splicing payload for uplink mode is 1, and the uplink interval of each splice to 20000 milliseconds.
1188
1189
1190 )))|OK
1191
1192 **Downlink Command: 0xAD**
1193
1194 Format: Command Code (0xAD) followed by 1 bytes or 5 bytes.
1195
1196 * Example 1: Downlink Payload: AD 00 ~/~/ AT+DATAUP=0
1197 * Example 2: Downlink Payload: AD 01 ~/~/ AT+DATAUP =1
1198 * Example 3: Downlink Payload: AD 01 00 00 14~/~/ AT+DATAUP =1,20000
1199
1200 This means that the interval is set to 0x000014=20S
1201
1202
1203 1.
1204 11. Set the payload version
1205
1206 Feature, Set the payload version.
1207
1208 **AT Command: AT+PAYVER**
1209
1210 |**Command Example**|**Function**|**Response**
1211 |AT+PAYVER=?|Show current payload version|(((
1212 1
1213
1214
1215 OK
1216 )))
1217 |AT+PAYVER=5|Set payload version is 5.|OK
1218
1219 **Downlink Command: 0xAE**
1220
1221 Format: Command Code (0xAE) followed by 1 bytes.
1222
1223 * Example 1: Downlink Payload: AE 01 ~/~/ AT+PAYVER=1
1224 * Example 2: Downlink Payload: AE 05 ~/~/ AT+PAYVER=5
1225
1226 1. Battery & how to replace
1227 11. Battery Type
1228
1229 SDI-12-LB is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.
1230
1231
1232 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1233
1234 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
1235
1236
1237 Minimum Working Voltage for the SDI-12-LB:
1238
1239 SDI-12-LB:  2.45v ~~ 3.6v
1240
1241
1242 1.
1243 11. Replace Battery
1244
1245 Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
1246
1247 And make sure the positive and negative pins match.
1248
1249
1250
1251 1.
1252 11. Power Consumption Analyze
1253
1254 Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
1255
1256
1257 Instruction to use as below:
1258
1259
1260 Step 1: Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
1261
1262 [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
1263
1264
1265 Step 2: Open it and choose
1266
1267 * Product Model
1268 * Uplink Interval
1269 * Working Mode
1270
1271 And the Life expectation in difference case will be shown on the right.
1272
1273 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image037.png]]
1274
1275
1276 The battery related documents as below:
1277
1278 * [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1279 * [[Lithium-Thionyl Chloride Battery>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/ER18505_datasheet-EN.pdf]] datasheet, [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/ER18505_datasheet_PM-ER18505-S-02-LF_EN.pdf]]
1280 * [[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
1281
1282 |(((
1283 JST-XH-2P connector
1284 )))
1285
1286 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
1287
1288
1289
Xiaoling 9.2 1290 1.
Xiaoling 2.2 1291 11.
1292 111. ​Battery Note
1293
1294 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.
1295
1296
1297 1.
1298 11.
1299 111. ​Replace the battery
1300
1301 You can change the battery in the SDI-12-LB.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.
1302
1303
1304 The default battery pack of SDI-12-LB includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 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)
1305
1306
1307
1308
1309
1310
1311 1. Remote Configure device
1312 11. Connect via BLE
1313
1314 Please see this instruction for how to configure via BLE:
1315
1316 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]]
1317
1318
1319 1.
1320 11. AT Command Set
1321
1322 1. OTA firmware update
1323
1324 Please see this link for how to do OTA firmware update.
1325
1326 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338 1. ​Order Info
1339
1340 **Package Includes**:
1341
1342 * SDI-12-LB SDI-12 to LoRaWAN Converter
1343
1344 **Dimension and weight**:
1345
1346 * Device Size: cm
1347 * Device Weight: g
1348 * Package Size / pcs : cm
1349 * Weight / pcs : g
1350
1351
1352
1353 1. ​Support
1354
1355 * 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.
1356 * 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
1357
1358 [[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]]
1359
1360

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