Version 41.1 by David Huang on 2022/09/07 17:00
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2 [[image:)YK]Y_LZJIO]J2~~VA}OQJM2.png]]
3
4 = **1. Introduction** =
5
6 == **1.1 ​What is NSPH01 Soil pH Sensor** ==
7
8 The Dragino NSPH01 is a **NB-IOT soil ph sensor** for IoT of Agriculture. It is designed to measure the soil PH and soil temperature, so to send to the platform to analyze the soil acid or alkali level. The probe is IP68 waterproof.
9
10 NSPH01 probe is made by Solid AgCl reference electrode and Pure metal pH sensitive electrode. It can detect soil's** pH **with high accuracy and stable value. The NSPH01 probe can be buried into soil for long time use.
11
12 NarrowBand-Internet of Things (NB-IoT) is a standards-based low power wide area (LPWA) technology developed to enable a wide range of new IoT devices and services. NB-IoT significantly improves the power consumption of user devices, system capacity and spectrum efficiency, especially in deep coverage.
13 \\NSPH01 supports different uplink methods include **TCP,MQTT,UDP and CoAP  **for different application requirement.
14 \\NSPH01 is powered by  **8500mAh Li-SOCI2 battery**, It is designed for long term use up to 5 years. (Actually Battery life depends on the use environment, update period & uplink method)
15 \\To use NSPH01, user needs to check if there is NB-IoT coverage in local area and with the bands NSPH01 supports. If the local operate support it, user needs to get a **NB-IoT SIM card** from local operator and install NSPH01 to get NB-IoT network connection.
16
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18 [[image:image-20220907153151-1.png]]
19
20 (% style="text-align:center" %)
21 [[image:M_K`YF9`CAYAE\@}3T]FHT$9.png]]
22
23 **1.2 Features**
24
25 * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
26 * Monitor soil pH with temperature compensation.
27 * Monitor soil temperature
28 * PH and Temperature alarm function
29 * Monitor Battery Level
30 * Support pH calibration by end user
31 * Uplink on periodically
32 * Downlink to change configure
33 * IP66 Waterproof Enclosure
34 * IP68 rate for the Sensor Probe
35 * Ultra-Low Power consumption
36 * AT Commands to change parameters
37 * Micro SIM card slot for NB-IoT SIM
38 * 8500mAh Battery for long term use
39
40 **1.3  Specification**
41
42 **Common DC Characteristics:**
43
44 * Supply Voltage: 2.1v ~~ 3.6v
45 * Operating Temperature: -40 ~~ 85°C
46
47 **NB-IoT Spec:**
48
49 * - B1 @H-FDD: 2100MHz
50 * - B3 @H-FDD: 1800MHz
51 * - B8 @H-FDD: 900MHz
52 * - B5 @H-FDD: 850MHz
53 * - B20 @H-FDD: 800MHz
54 * - B28 @H-FDD: 700MHz
55
56 **1.4 Probe Specification**
57
58 **Soil pH:**
59
60 * Range: 3 ~~ 10 pH
61 * Resolution: 0.01 pH
62 * Accuracy: ±2% under (0~~50 ℃, Accuracy will poor under 0 due to frozen)
63 * Temperature Compensation Range: 0 ~~ 50℃
64 * IP68 Protection
65 * Length: 3.5 meters
66
67 **Soil Temperature:**
68
69 * Range -40℃～85℃
70 * Resolution: 0.1℃
71 * Accuracy: <±0.5℃(-10℃～40℃)，<±0.8℃ (others)
72 * IP68 Protection
73 * Length: 3.5 meters
74
75 **1.5 ​Applications**
76
77 * Smart Agriculture
78
79 **1.6 Pin mapping and power on**
80
81 (% style="text-align:center" %)
82 [[image:image-20220907153300-2.png]]
83
84
85 **2.  Use NSPH01 to communicate with IoT Server**
86
87 **2.1  How it works**
88
89 The NSPH01 is equipped with a NB-IoT module, the pre-loaded firmware in NSPH01 will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module.  The NB-IoT network will forward this value to IoT server via the protocol defined by NSPH01.
90
91 The diagram below shows the working flow in default firmware of NSPH01:
92
93 (% style="text-align:center" %)
94 [[image:image-20220907153416-3.png]]
95
96 **2.2 ​ Configure the NSPH01**
97
98 **2.2.1 Test Requirement**
99
100 To use NSPH01 in your city, make sure meet below requirements:
101
102 * Your local operator has already distributed a NB-IoT Network there.
103 * The local NB-IoT network used the band that NSPH01 supports.
104 * Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
105
106 Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The NSPH01 will use CoAP(120.24.4.116:5683) or raw UDP(120.24.4.116:5601) or MQTT(120.24.4.116:1883)or TCP(120.24.4.116:5600)protocol to send data to the test server
107
108 (% style="text-align:center" %)
109 [[image:image-20220907153445-4.png]]
110
111
112 **2.2.2 Insert SIM card**
113
114 Insert the NB-IoT Card get from your provider.
115
116 User need to take out the NB-IoT module and insert the SIM card like below:
117
118 (% style="text-align:center" %)
119 [[image:image-20220907153505-5.png]]
120
121 **2.2.3 Connect USB – TTL to NSPH01 to configure it**
122
123 User need to configure NSPH01 via serial port to set the **Server Address** / **Uplink Topic** to define where and how-to uplink packets. NSPH01 support AT Commands, user can use a USB to TTL adapter to connect to NSPH01 and use AT Commands to configure it, as below.
124
125 **Connection:**
126
127 USB TTL GND <~-~-~-~-> GND
128
129 USB TTL TXD <~-~-~-~-> UART_RXD
130
131 USB TTL RXD <~-~-~-~-> UART_TXD
132
133 In the PC, use below serial tool settings:
134
135 * Baud:  **9600**
136 * Data bits:** 8**
137 * Stop bits: **1**
138 * Parity:  **None**
139 * Flow Control: **None**
140
141 Make sure the switch is in FLASH position, then power on device by connecting the jumper on NSPH01. NSPH01 will output system info once power on as below, we can enter the **password: 12345678** to access AT Command input.
142
143 (% style="text-align:center" %)
144 [[image:image-20220907153529-6.png]]
145
146 **Note: the valid AT Commands can be found at:  **[[**https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0**>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
147
148 **2.2.4 Use CoAP protocol to uplink data**
149
150 **Note: if you don't have CoAP server, you can refer this link to set up one: **[[**http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]
151
152 **Use below commands:**
153
154 * **AT+PRO=1**   ~/~/ Set to use CoAP protocol to uplink
155 * **AT+SERVADDR=120.24.4.116,5683   ** ~/~/ to set CoAP server address and port
156 * **AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** ~/~/Set COAP resource path
157
158 For parameter description, please refer to AT command set
159
160 (% style="text-align:center" %)
161 [[image:image-20220907153551-7.png||height="502" width="740"]]
162
163 After configure the server address and **reset the device** (via AT+ATZ ), NSPH01 will start to uplink sensor values to CoAP server.
164
165 (% style="text-align:center" %)
166 [[image:image-20220907153612-8.png||height="529" width="729"]]
167
168
169 **2.2.5 Use UDP protocol to uplink data(Default protocol)**
170
171 This feature is supported since firmware version v1.0.1
172
173 * **AT+PRO=2   ** ~/~/ Set to use UDP protocol to uplink
174 * **AT+SERVADDR=120.24.4.116,5601   ** ~/~/ to set UDP server address and port
175 * **AT+CFM=1       ** ~/~/If the server does not respond, this command is unnecessar
176
177 (% style="text-align:center" %)
178 [[image:image-20220907153643-9.png||height="401" width="734"]]
179
180 (% style="text-align:center" %)
181 [[image:image-20220907153703-10.png||height="309" width="738"]]
182
183
184 **2.2.6 Use MQTT protocol to uplink data**
185
186 This feature is supported since firmware version v110
187
188 * **AT+PRO=3   ** ~/~/Set to use MQTT protocol to uplink
189 * **AT+SERVADDR=120.24.4.116,1883   ** ~/~/Set MQTT server address and port
190 * **AT+CLIENT=CLIENT       ** ~/~/Set up the CLIENT of MQTT
191 * **AT+UNAME=UNAME                               **~/~/Set the username of MQTT
192 * **AT+PWD=PWD                                        **~/~/Set the password of MQTT
193 * **AT+PUBTOPIC=NSE01_PUB                    **~/~/Set the sending topic of MQTT
194 * **AT+SUBTOPIC=NSE01_SUB          ** ~/~/Set the subscription topic of MQTT
195
196 (% style="text-align:center" %)
197 [[image:image-20220907153739-11.png||height="491" width="764"]]
198
199 (% style="text-align:center" %)
200 [[image:image-20220907153751-12.png||height="555" width="769"]]
201
202 MQTT protocol has a much higher power consumption compare vs UDP / CoAP protocol. Please check the power analyze document and adjust the uplink period to a suitable interval.
203
204 **2.2.7 Use TCP protocol to uplink data**
205
206 This feature is supported since firmware version v110
207
208 * **AT+PRO=4   ** ~/~/ Set to use TCP protocol to uplink
209 * **AT+SERVADDR=120.24.4.116,5600   ** ~/~/ to set TCP server address and port
210
211 (% style="text-align:center" %)
212 [[image:image-20220907153818-13.png||height="486" width="668"]]
213
214 (% style="text-align:center" %)
215 [[image:image-20220907153827-14.png||height="236" width="684"]]
216
217 **2.2.8 Change Update Interval**
218
219 User can use below command to change the **uplink interval**.
220
221 * **AT+TDC=600      ** ~/~/ Set Update Interval to 600s
222
223 **NOTE:**
224
225 **~1. By default, the device will send an uplink message every 2 hour.**
226
227 **2.3  Uplink Payload**
228
229 In this mode, uplink payload includes 87 bytes in total by default.
230
231 Each time the device uploads a data package, 8 sets of recorded data will be attached. Up to 32 sets of recorded data can be uploaded.
232
233 (% style="width:934px" %)
234 |(% style="width:93px" %)**Size(bytes)**|(% style="width:82px" %)**8**|(% style="width:43px" %)**2**|(% style="width:41px" %)**2**|(% style="width:126px" %)**1**|(% style="width:54px" %)**1**|(% style="width:84px" %)1|(% style="width:75px" %)2|(% style="width:133px" %)2|(% style="width:70px" %)2|(% style="width:127px" %)4   
235 |(% style="width:93px" %)**Value**|(% style="width:82px" %)Device ID|(% style="width:43px" %)Ver|(% style="width:41px" %)BAT|(% style="width:126px" %)Signal Strength|(% style="width:54px" %)MOD|(% style="width:84px" %)Interrupt|(% style="width:75px" %)Soil PH|(% style="width:133px" %)Soil Temperature|(% style="width:70px" %)Soil PH|(% style="width:127px" %)Time stamp  .....
236
237 If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NSPH01 uplink data.
238
239 (% style="text-align:center" %)
240 [[image:image-20220907153902-15.png||height="581" width="804"]]
241
242
243 The payload is ASCII string, representative same HEX:
244
245 0xf86841105675413800640c781701000225010b6315537b010b0226631550fb010e022663154d7701110225631549f1011502246315466b01190223631542e5011d022163153f62011e022163153bde011e022163153859 where:
246
247 * Device ID: 0xf868411056754138 = f868411056754138
248 * Version: 0x0064=100=1.0.0
249
250 * BAT: 0x0c78 = 3192 mV = 3.192V
251 * Singal: 0x17 = 23
252 * Mod: 0x01 = 1
253 * Interrupt: 0x00= 0
254 * Soil PH: 0x0225= 549 = 5.49
255 * Soil Temperature:0x010B =267=26.7 °C
256 * Time stamp : 0x6315537b =1662342011
257 * Soil Temperature,Soil PH,Time stamp : 010b0226631550fb
258 * 8 sets of recorded data: Temperature,Soil PH,Time stamp : 010e022663154d77,.......
259
260 **2.4  Payload Explanation and Sensor Interface**
261
262 **2.4.1  Device ID**
263
264 By default, the Device ID equal to the last 15 bits of IMEI.
265
266 User can use **AT+DEUI** to set Device ID
267
268 **Example:**
269
270 AT+DEUI=868411056754138
271
272 The Device ID is stored in a none-erase area, Upgrade the firmware or run AT+FDR won't erase Device ID.
273
274 **2.4.2  Version Info**
275
276 Specify the software version: 0x64=100, means firmware version 1.00.
277
278 For example: 0x00 64 : this device is NSPH01 with firmware version 1.0.0.
279
280 **2.4.3  Battery Info**
281
282 Check the battery voltage for NSPH01.
283
284 Ex1: 0x0B45 = 2885mV
285
286 Ex2: 0x0B49 = 2889mV
287
288 **2.4.4  Signal Strength**
289
290 NB-IoT Network signal Strength.
291
292 **Ex1: 0x1d = 29**
293
294 **0**  -113dBm or less
295
296 **1**  -111dBm
297
298 **2...30** -109dBm... -53dBm
299
300 **31**   -51dBm or greater
301
302 **99**    Not known or not detectable
303
304 **2.4.5  Soil PH**
305
306 Get the PH content of the soil. The value range of the register is 300-1000(Decimal), divide this value by 100 to get the percentage of PH in the soil.
307
308 For example, if the data you get from the register is **__0x05 0xDC__**, the PH content in the soil is
309
310 **0229(H) = 549(D) /100 = 5.49.**
311
312 **2.4.6  Soil Temperature**
313
314 Get the temperature in the soil. The value range of the register is -4000 - +800(Decimal), divide this value by 100 to get the temperature in the soil. For example, if the data you get from the register is **__0x09 0xEC__**, the temperature content in the soil is
315
316 **Example**:
317
318 If payload is 0105H: ((0x0105 & 0x8000)>>15 === 0),temp = 0105(H)/10 = 26.1 °C
319
320 If payload is FF7EH: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/10 = -12.9 °C
321
322 **2.4.7  Timestamp**
323
324 Time stamp : 0x6315537b =1662342011
325
326 Convert Unix timestamp to time 2022-9-5 9:40:11.
327
328 **2.4.8  Digital Interrupt**
329
330 Digital Interrupt refers to pin **GPIO_EXTI**, and there are different trigger methods. When there is a trigger, the NSPH01 will send a packet to the server.
331
332 The command is:
333
334 **AT+INTMOD=3 ** ~/~/(more info about INMOD please refer [[**AT Command Manual**>>url:https://www.dragino.com/downloads/downloads/NB-IoT/NBSN95/DRAGINO_NBSN95-NB_AT%20Commands_v1.1.0.pdf]])**.**
335
336 The lower four bits of this data field shows if this packet is generated by interrupt or not. Click here for the hardware and software set up.
337
338 Example:
339
340 0x(00): Normal uplink packet.
341
342 0x(01): Interrupt Uplink Packet.
343
344 **2.4.9  ​+5V Output**
345
346 NSPH01 will enable +5V output before all sampling and disable the +5v after all sampling. 
347
348 The 5V output time can be controlled by AT Command.
349
350 **AT+5VT=1000**
351
352 Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.** **
353
354
355 **2.5  Downlink Payload**
356
357 By default, NSPH01 prints the downlink payload to console port.
358
359 (% style="text-align:center" %)
360 [[image:image-20220907154636-17.png]]
361
362
363
364
365
366
367
368 **Examples:**
369
370 * **Set TDC**
371
372 If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
373
374 Payload:    01 00 00 1E    TDC=30S
375
376 Payload:    01 00 00 3C    TDC=60S
377
378 * **Reset**
379
380 If payload = 0x04FF, it will reset the NSE01
381
382 * **INTMOD**
383
384 Downlink Payload: 06000003, Set AT+INTMOD=3
385
386 **2.6  ​LED Indicator**
387
388 The NSPH01 has an internal LED which is to show the status of different state.
389
390 * When power on, NSPH01 will detect if sensor probe is connected, if probe detected, LED will blink four times. (no blinks in this step is no probe)
391 * Then the LED will be on for 1 second means device is boot normally.
392 * After NSPH01 join NB-IoT network. The LED will be ON for 3 seconds.
393 * For each uplink probe, LED will be on for 500ms.
394
395 **2.7 Installation and Maintain**
396
397 **2.7.1 Before measurement**
398
399 If the NSPH01 has more than 7 days not use or just clean the pH probe. User should put the probe inside pure water for more than 24 hours for activation. If no put in water, user need to put inside soil for more than 24 hours to ensure the measurement accuracy. 
400
401 **2.7.2 Measurement**
402
403 **Measurement the soil surface:**
404
405 [[image:image-20220907154700-18.png]] ​
406
407 Choose the proper measuring position. Split the surface soil according to the measured deep.
408
409 Put pure water, or rainwater to make the soil of measurement point to moist mud. Remove rocks or hard things.
410
411 Slowly insert the probe to the measure point. Don't use large force which will break the probe. Make sure not shake when inserting.
412
413 Put soil over the probe after insert. And start to measure.
414
415 **Measurement inside soil:**
416
417 Dig a hole with diameter > 20CM.
418
419 Insert the probe inside, method like measure the surface.
420
421 **2.7.3 Maintain Probe**
422
423 1. pH probe electrode is fragile and no strong. User must avoid strong force or hitting it.
424 1. After long time use (3~~ 6  months). The probe electrode needs to be clean; user can use high grade sandpaper to polish it or put in 5% hydrochloric acid for several minutes. After the metal probe looks like new, user can use pure water to wash it.
425 1. Probe reference electrode is also no strong, need to avoid strong force or hitting.
426 1. User should keep reference electrode wet while not use.
427 1. Avoid the probes to touch oily matter. Which will cause issue in accuracy.
428 1. The probe is IP68 can be put in water.
429
430 **2.8 PH and Temperature alarm function**
431
432 ➢ AT Command:
433
434 AT+ PHALARM=min,max
435
436 ² When min=3, and max≠0, Alarm higher than max
437
438 ² When min≠0, and max=0, Alarm lower than min
439
440 ² When min≠0 and max≠0, Alarm higher than max or lower than min
441
442 Example:
443
444 AT+ PHALARM =3,5 ~/~/ Alarm when PH lower than 5.
445
446 AT+ TEMPALARM=min,max
447
448 ² When min=0, and max≠0, Alarm higher than max
449
450 ² When min≠0, and max=0, Alarm lower than min
451
452 ² When min≠0 and max≠0, Alarm higher than max or lower than min
453
454 Example:
455
456 AT+ TEMPALARM=0,20 ~/~/ Alarm when temperature lower than 20.
457
458
459 **2.9 Set the number of data to be uploaded and the recording time**
460
461 ➢ AT Command:
462
463 AT+TR=900  ~/~/The unit is seconds, and the default is to record data once every 900 seconds.( The minimum can be set to 180 seconds)
464
465
466 AT+NOUD=8  ~/~/The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
467
468 **2.10 Read or Clear cached data**
469
470 ➢ AT Command:
471
472 AT+CDP ~/~/ Read cached data
473
474 [[image:image-20220907154700-19.png]]
475
476
477 AT+CDP=0 ~/~/ Clear cached data
478
479
480 **2.11 Calibration**
481
482 User can do calibration for the probe. It is limited to use below pH buffer solution to calibrate: 4.00, 6.86, 9.18. When calibration, user need to clean the electrode and put the probe in the pH buffer solution to wait the value stable ( a new clean electrode might need max 24 hours to be stable).
483
484 After stable, user can use below command to calibrate.
485
486 [[image:image-20220907154700-20.png]] ​
487
488 **2.8  ​Firmware Change Log**
489
490 Download URL & Firmware Change log: [[https:~~/~~/www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0>>url:https://www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0]]
491
492 Upgrade Instruction: [[Upgrade Firmware>>path:#H5.1200BHowtoUpgradeFirmware]]
493
494 **2.9  ​Battery Analysis**
495
496 **2.9.1  ​Battery Type**
497
498 The NSPH01 battery is a combination of an 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is none-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.
499
500 The battery is designed to last for several years depends on the actually use environment and update interval. 
501
502 The battery related documents as below:
503
504 * [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
505 * [[Lithium-Thionyl Chloride Battery datasheet>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
506 * [[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
507
508 [[image:image-20220907154700-21.png]] ​
509
510 **2.9.2  Power consumption Analyze**
511
512 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.
513
514 Instruction to use as below:
515
516 **Step 1:  **Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from: [[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/]]
517
518 **Step 2: ** Open it and choose
519
520 * Product Model
521 * Uplink Interval
522 * Working Mode
523
524 And the Life expectation in difference case will be shown on the right.
525
526 (% style="text-align:center" %)
527 [[image:image-20220907154700-22.jpeg]]
528
529 ​
530
531 **2.9.3  ​Battery Note**
532
533 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.
534
535 **2.9.4  Replace the battery**
536
537 The default battery pack of NSPH01 includes a ER26500 plus super capacitor. If user can't find this pack locally, they can find ER26500 or equivalence without the SPC1520 capacitor, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes).
538
539 **3. ​ Access NB-IoT Module**
540
541 Users can directly access the AT command set of the NB-IoT module.
542
543 The AT Command set can refer the BC35-G NB-IoT Module AT Command: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/]] 
544
545 (% style="text-align:center" %)
546 [[image:image-20220907154700-23.png]]
547
548 ​
549
550 **4.  Using the AT Commands**
551
552 **4.1  Access AT Commands**
553
554 See this link for detail:  [[https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
555
556 AT+<CMD>?  : Help on <CMD>
557
558 AT+<CMD>         : Run <CMD>
559
560 AT+<CMD>=<value> : Set the value
561
562 AT+<CMD>=?  : Get the value
563
564 **General Commands**      
565
566 AT  : Attention       
567
568 AT?  : Short Help     
569
570 ATZ  : MCU Reset    
571
572 AT+TDC  : Application Data Transmission Interval
573
574 AT+CFG  : Print all configurations
575
576 AT+CFGMOD           : Working mode selection
577
578 AT+INTMOD            : Set the trigger interrupt mode
579
580 AT+5VT  : Set extend the time of 5V power  
581
582 AT+PRO  : Choose agreement
583
584 AT+RXDL  : Extend the sending and receiving time
585
586 AT+SERVADDR  : Server Address
587
588 AT+TR      : Get or Set record time"
589
590
591 AT+NOUD      : Get or Set the number of data to be uploaded
592
593
594 AT+CDP     : Read or Clear cached data
595
596
597 AT+TEMPALARM      : Get or Set alarm of temp
598
599 AT+PHALARM     : Get or Set alarm of PH
600
601 AT+ PHCAL  : calibrate PH value
602
603
604 **COAP Management**      
605
606 AT+URI            : Resource parameters
607
608 **UDP Management**
609
610 AT+CFM          : Upload confirmation mode (only valid for UDP)
611
612 **MQTT Management**
613
614 AT+CLIENT               : Get or Set MQTT client
615
616 AT+UNAME  : Get or Set MQTT Username
617
618 AT+PWD                  : Get or Set MQTT password
619
620 AT+PUBTOPIC  : Get or Set MQTT publish topic
621
622 AT+SUBTOPIC  : Get or Set MQTT subscription topic
623
624 **Information**          
625
626 AT+FDR  : Factory Data Reset
627
628 AT+PWORD  : Serial Access Password
629
630 **​5.  FAQ**
631
632 **5.1 ​ How to Upgrade Firmware**
633
634 User can upgrade the firmware for 1) bug fix, 2) new feature release.
635
636 Please see this link for how to upgrade:  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList]]
637
638 **Notice, **NSPH01 **and **NSPH01 **share the same mother board. They use the same connection and method to update.**
639
640 **5.2  Can I calibrate NSPH01 to different soil types?**
641
642 NSPH01 is calibrated for saline-alkali soil and loamy soil. If users want to use it for other soil, they can calibrate the value in the IoT platform base on the value measured by saline-alkali soil and loamy soil. The formula can be found at [[this link>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/LSE01/Calibrate_to_other_Soil_20220605.pdf]].
643
644 **6.  Trouble Shooting**
645
646 **6.1  ​Connection problem when uploading firmware**
647
648 **Please see: **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting]]
649
650 **6.2  AT Command input doesn't work**
651
652 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 **ENTER** while sending out the command. Some serial tool doesn't send **ENTER** while press the send key, user need to add ENTER in their string.
653
654 **7. ​ Order Info**
655
656 Part Number**:** NSPH01
657
658 **8.  Packing Info**
659
660 **Package Includes**:
661
662 * NSPH01 NB-IoT Soil Moisture & EC Sensor x 1
663 * External antenna x 1
664
665 **Dimension and weight**:
666
667 * Size: 195 x 125 x 55 mm
668 * Weight:   420g
669
670 **9.  Support**
671
672 * 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.
673 * 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]]
674
675 ​

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