Last modified by Bei Jinggeng on 2024/03/30 17:53
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14 **Table of Contents:**
15
16 {{toc/}}
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18
19
20 = 1.  Introduction =
21
22 == 1.1 ​ What is NSPH01 Soil pH Sensor ==
23
24
25 (((
26 The Dragino NSPH01 is a (% style="color:blue" %)**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.
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28
29 (((
30 NSPH01 probe is made by Solid AgCl reference electrode and Pure metal pH sensitive electrode. It can detect soil's** (% style="color:blue" %)pH (%%)**with high accuracy and stable value. The NSPH01 probe can be buried into soil for long time use.
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32
33 (((
34 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.
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36
37 (((
38 NSPH01 supports different uplink methods include (% style="color:blue" %)**TCP,MQTT,UDP and CoAP  **(%%)for different application requirement.
39 )))
40
41 (((
42 NSPH01 is powered by (% style="color:blue" %)**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)
43 )))
44
45 (((
46 To use NSPH01, user needs to check if there is NB-IoT coverage in the installation area and with the bands NSPH01 supports. If the local operator supports it, user needs to get a (% style="color:blue" %)**NB-IoT SIM card** (%%)from local operator and install NSPH01 to get NB-IoT network connection.
47 )))
48
49
50 [[image:image-20220907153151-1.png]]
51
52
53 [[image:M_K`YF9`CAYAE\@}3T]FHT$9.png]]
54
55
56 == 1.2  Features ==
57
58
59 * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
60 * Monitor soil pH with temperature compensation.
61 * Monitor soil temperature
62 * pH and Temperature alarm function
63 * Monitor Battery Level
64 * Support pH calibration by end user
65 * Uplink on periodically
66 * Downlink to change configure
67 * IP66 Waterproof Enclosure
68 * IP68 rate for the Sensor Probe
69 * Ultra-Low Power consumption
70 * AT Commands to change parameters
71 * Micro SIM card slot
72 * 8500mAh Battery for long term use
73
74 == 1.3  Specification ==
75
76
77 (% style="color:#037691" %)**Common DC Characteristics:**
78
79 * Supply Voltage: 2.1v ~~ 3.6v
80 * Operating Temperature: -40 ~~ 85°C
81
82 (% style="color:#037691" %)**NB-IoT Spec:**
83
84 * B1 @H-FDD: 2100MHz
85 * B3 @H-FDD: 1800MHz
86 * B8 @H-FDD: 900MHz
87 * B5 @H-FDD: 850MHz
88 * B20 @H-FDD: 800MHz
89 * B28 @H-FDD: 700MHz
90
91 == 1.4  Probe Specification ==
92
93
94 (% style="color:#037691" %)**Soil pH:**
95
96 * Range: 3 ~~ 10 pH
97 * Resolution: 0.01 pH
98 * Accuracy: ±2% under (0~~50 ℃, Accuracy will poor under 0 due to frozen)
99 * Temperature Compensation Range: 0 ~~ 50℃
100 * IP68 Protection
101 * Length: 3.5 meters
102
103 (% style="color:#037691" %)**Soil Temperature:**
104
105 * Range -40℃～85℃
106 * Resolution: 0.1℃
107 * Accuracy: <±0.5℃(-10℃～40℃)，<±0.8℃ (others)
108 * IP68 Protection
109 * Length: 3.5 meters
110
111 == 1.5  ​Applications ==
112
113
114 * Smart Agriculture
115
116 == 1.6  Pin mapping and power on ==
117
118
119 [[image:image-20220907153300-2.png]]
120
121
122 = 2.  Use NSPH01 to communicate with IoT Server =
123
124 == 2.1  How it works ==
125
126
127 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.
128
129 The diagram below shows the working flow in default firmware of NSPH01:
130
131
132 [[image:image-20220907153416-3.png]]
133
134
135 == 2.2 ​ Configure the NSPH01 ==
136
137 === 2.2.1 Test Requirement ===
138
139
140 To use NSPH01 in the field, make sure meet below requirements:
141
142 * Your local operator has already distributed a NB-IoT Network there.
143 * The local NB-IoT network used the band that NSPH01 supports.
144 * Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
145
146 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.
147
148
149 [[image:image-20220907153445-4.png]]
150
151
152 === 2.2.2 Insert SIM card ===
153
154
155 User need to take out the NB-IoT module and insert the SIM card like below. ((% style="color:red" %) Pay attention to the direction(%%))
156
157
158 [[image:image-20220907153505-5.png]]
159
160
161 === 2.2.3 Connect USB – TTL to NSPH01 to configure it ===
162
163
164 User need to configure NSPH01 via serial port to set the (% style="color:blue" %)**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.
165
166
167 (% style="color:blue" %)**Connection:**
168
169 **~ (% style="background-color:yellow" %) USB TTL GND <~-~-~-~->  GND(%%)**
170
171 **~ (% style="background-color:yellow" %) USB TTL TXD  <~-~-~-~->  UART_RXD(%%)**
172
173 **~ (% style="background-color:yellow" %) USB TTL RXD  <~-~-~-~->  UART_TXD(%%)**
174
175
176 In the PC, use below serial tool settings:
177
178 * Baud:  (% style="color:green" %)**9600**
179 * Data bits:**  (% style="color:green" %)8(%%)**
180 * Stop bits:  (% style="color:green" %)**1**
181 * Parity:  (% style="color:green" %)**None**
182 * Flow Control: (% style="color:green" %)**None**
183
184 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 (% style="color:green" %)**password: 12345678**(%%) to access AT Command input.
185
186 [[image:image-20220912144017-1.png]]
187
188 (% style="color:red" %)**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]]
189
190
191 === 2.2.4 Use CoAP protocol to uplink data ===
192
193
194 (% style="color:red" %)**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/]]
195
196
197 (% style="color:blue" %)**Use below commands:**
198
199 * (% style="color:#037691" %)**AT+PRO=1**                         (%%) ~/~/  Set to use CoAP protocol to uplink
200 * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%) ~/~/  to set CoAP server address and port
201 * (% style="color:#037691" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/  Set COAP resource path
202
203 For parameter description, please refer to AT command set
204
205
206 [[image:image-20220907153551-7.png||height="502" width="740"]]
207
208
209 After configure the server address and (% style="color:green" %)**reset the device (via AT+ATZ )**(%%), NSPH01 will start to uplink sensor values to CoAP server.
210
211
212 [[image:image-20220907153612-8.png||height="529" width="729"]]
213
214
215 === 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
216
217
218 This feature is supported since firmware version v1.0.1
219
220 * (% style="color:blue" %)**AT+PRO=2   ** (%%) ~/~/  Set to use UDP protocol to uplink
221 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/  to set UDP server address and port
222 * (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessar
223
224 [[image:image-20220907153643-9.png||height="401" width="734"]]
225
226
227 [[image:image-20220907153703-10.png||height="309" width="738"]]
228
229
230 === 2.2.6 Use MQTT protocol to uplink data ===
231
232
233 This feature is supported since firmware version v110
234
235 * (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/ Set to use MQTT protocol to uplink
236 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/ Set MQTT server address and port
237 * (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%) ~/~/ Set up the CLIENT of MQTT
238 * (% style="color:blue" %)**AT+UNAME=UNAME                               **(%%)~/~/ Set the username of MQTT
239 * (% style="color:blue" %)**AT+PWD=PWD                                        **(%%)~/~/ Set the password of MQTT
240 * (% style="color:blue" %)**AT+PUBTOPIC=NSE01_PUB                    **(%%)~/~/ Set the sending topic of MQTT
241 * (% style="color:blue" %)**AT+SUBTOPIC=NSE01_SUB          ** (%%) ~/~/ Set the subscription topic of MQTT
242
243 [[image:image-20220907153739-11.png||height="491" width="764"]]
244
245
246 [[image:image-20220907153751-12.png||height="555" width="769"]]
247
248
249 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.
250
251
252 === 2.2.7 Use TCP protocol to uplink data ===
253
254
255 This feature is supported since firmware version v110
256
257 * (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
258 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   ** (%%) ~/~/ to set TCP server address and port
259
260 [[image:image-20220907153818-13.png||height="486" width="668"]]
261
262
263 [[image:image-20220907153827-14.png||height="236" width="684"]]
264
265
266 === 2.2.8 Change Update Interval ===
267
268
269 Users can use the below command to change the **uplink interval**.
270
271 * (% style="color:blue" %)**AT+TDC=7200      ** (%%) ~/~/ Set Update Interval to 7200s (2 hour)
272
273 (% style="color:red" %)**NOTE: By default, the device will send an uplink message every 2 hours. Each Uplink Include 8 set of records in this 2 hour (15 minute interval / record).**
274
275
276 == 2.3  Uplink Payload ==
277
278
279 In this mode, uplink payload includes 87 bytes in total by default.
280
281 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.
282
283 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:515px" %)
284 |(% style="background-color:#4f81bd; color:white; width:50px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:40px" %)**8**|(% style="background-color:#4f81bd; color:white; width:20px" %)**2**|(% style="background-color:#4f81bd; color:white; width:23px" %)**2**|(% style="background-color:#4f81bd; color:white; width:60px" %)**1**|(% style="background-color:#4f81bd; color:white; width:20px" %)**1**|(% style="background-color:#4f81bd; color:white; width:40px" %)**1**|(% style="background-color:#4f81bd; color:white; width:40px" %)**2**|(% style="background-color:#4f81bd; color:white; width:51px" %)**2**|(% style="background-color:#4f81bd; color:white; width:49px" %)**4**|(% style="background-color:#4f81bd; color:white; width:49px" %)**2**|(% style="background-color:#4f81bd; color:white; width:34px" %)**2**|(% style="background-color:#4f81bd; color:white; width:39px" %)**4**
285 |(% style="width:96px" %)Value|(% style="width:83px" %)Device ID|(% style="width:44px" %)Ver|(% style="width:42px" %)BAT|(% style="width:124px" %)Signal Strength|(% style="width:57px" %)MOD|(% style="width:80px" %)Interrupt|(% style="width:69px" %)Soil PH|(% style="width:134px" %)Soil Temperature|(% style="width:98px" %)Time stamp|(% style="width:134px" %)Soil Temperature|(% style="width:68px" %)Soil PH|(% style="width:125px" %)Time stamp  .....
286
287 If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NSPH01 uplink data.
288
289 [[image:image-20220907153902-15.png||height="581" width="804"]]
290
291
292 (((
293 The payload is ASCII string, representative same HEX:
294 )))
295
296 (((
297
298 )))
299
300 (((
301 **0x (% style="color:red" %)__f868411056754138__  (% style="color:blue" %)__0064 __ (% style="color:green" %)__0c78__  (% style="color:#00b0f0" %)__17__  (% style="color:#7030a0" %)__01__  (% style="color:#d60093" %)__00__  (% style="color:#a14d07" %)__0225 __ (% style="color:#0020b0" %) __010b__  (% style="color:#420042" %)__6315537b__  (% style="color:#663300" %)//__010b0226631550fb__  __010e022663154d77  01110225631549f1  011502246315466b  01190223631542e5  011d022163153f62  011e022163153bde 011e022163153859__//(%%)**
302 )))
303
304 (((
305
306
307 **where:**
308 )))
309
310 * (% style="color:#037691" %)**Device ID:**(%%)** **0xf868411056754138 = f868411056754138
311
312 * (% style="color:#037691" %)**Version:**  (%%) 0x0064=100=1.0.0
313
314 * (% style="color:#037691" %)**BAT:**   (%%) 0x0c78 = 3192 mV = 3.192V
315
316 * (% style="color:#037691" %)**Singal:** (%%)0x17 = 23
317
318 * (% style="color:#037691" %)**Mod:** (%%) 0x01 = 1
319
320 * (% style="color:#037691" %)**Interrupt:**(%%) 0x00= 0
321
322 * (% style="color:#037691" %)**Soil PH:** (%%) 0x0225= 549 = 5.49
323
324 * (% style="color:#037691" %)**Soil Temperature:**(%%) 0x010b =267=26.7 °C
325
326 * (% style="color:#037691" %)**Time stamp :**   (%%) 0x6315537b =1662342011  ([[Unix Epoch Time>>url:http://www.epochconverter.com/]])
327
328 * (% style="color:#037691" %)**Soil Temperature,Soil PH,Time stamp : **(%%) 010b0226631550fb
329
330 * (% style="color:#037691" %)**8 sets of recorded data:**(%%) Temperature,Soil PH,Time stamp :  010e022663154d77,.......
331
332 == 2.4  Payload Explanation and Sensor Interface ==
333
334 === 2.4.1  Device ID ===
335
336
337 By default, the Device ID equal to the last 15 bits of IMEI.
338
339 User can use (% style="color:blue" %)**AT+DEUI** (%%)to set Device ID
340
341
342 **Example:**
343
344 AT+DEUI=868411056754138
345
346 The Device ID is stored in a none-erase area, Upgrade the firmware or run AT+FDR won't erase Device ID.
347
348
349 === 2.4.2  Version Info ===
350
351
352 Specify the software version: 0x64=100, means firmware version 1.00.
353
354 For example: 0x00 64 : this device is NSPH01 with firmware version 1.0.0.
355
356
357 === 2.4.3  Battery Info ===
358
359
360 Check the battery voltage for NSPH01.
361
362 Ex1: 0x0B45 = 2885mV
363
364 Ex2: 0x0B49 = 2889mV
365
366
367 === 2.4.4  Signal Strength ===
368
369
370 NB-IoT Network signal Strength.
371
372 **Ex1: 0x1d = 29**
373
374 **0**  -113dBm or less
375
376 **1**  -111dBm
377
378 **2...30** -109dBm... -53dBm
379
380 **31**   -51dBm or greater
381
382 **99**    Not known or not detectable
383
384
385 === 2.4.5  Soil PH ===
386
387
388 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.
389
390 For example, if the data you get from the register is (% style="color:blue" %)**__0x05 0xDC__**(%%), the PH content in the soil is
391
392 (% style="color:blue" %)**0229(H) = 549(D) /100 = 5.49.**
393
394
395 === 2.4.6  Soil Temperature ===
396
397
398 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 (% style="color:blue" %)**__0x09 0xEC__**(%%), the temperature content in the soil is
399
400
401 **Example**:
402
403 If payload is 0105H: ((0x0105 & 0x8000)>>15 === 0),temp = 0105(H)/10 = 26.1 °C
404
405 If payload is FF7EH: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/10 = -12.9 °C
406
407
408 === 2.4.7  Timestamp ===
409
410
411 Time stamp : 0x6315537b =1662342011
412
413 Convert Unix timestamp to time 2022-9-5 9:40:11.
414
415
416 === 2.4.8  Digital Interrupt ===
417
418
419 Digital Interrupt refers to pin (% style="color:blue" %)**GPIO_EXTI**(%%), and there are different trigger methods. When there is a trigger, the NSPH01 will send a packet to the server.
420
421 The command is:
422
423 (% style="color:blue" %)**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]])**.**
424
425 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.
426
427
428 **Example:**
429
430 0x(00): Normal uplink packet.
431
432 0x(01): Interrupt Uplink Packet.
433
434
435 === 2.4.9  ​+5V Output ===
436
437
438 NSPH01 will enable +5V output before all sampling and disable the +5v after all sampling. 
439
440 The 5V output time can be controlled by AT Command.
441
442 (% style="color:blue" %)**AT+5VT=1000**
443
444 Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.** **
445
446
447 == 2.5  Downlink Payload ==
448
449
450 By default, NSPH01 prints the downlink payload to console port.
451
452 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
453 |=(% style="width: 183px; background-color:#4F81BD;color:white" %)**Downlink Control Type**|=(% style="width: 55px; background-color:#4F81BD;color:white" %)FPort|=(% style="width: 93px; background-color:#4F81BD;color:white" %)**Type Code**|=(% style="width: 179px; background-color:#4F81BD;color:white" %)**Downlink payload size(bytes)**
454 |(% style="width:183px" %)TDC (Transmit Time Interval)|(% style="width:55px" %)Any|(% style="width:93px" %)01|(% style="width:146px" %)4
455 |(% style="width:183px" %)RESET|(% style="width:55px" %)Any|(% style="width:93px" %)04|(% style="width:146px" %)2
456 |(% style="width:183px" %)INTMOD|(% style="width:55px" %)Any|(% style="width:93px" %)06|(% style="width:146px" %)4
457
458 (% style="color:blue" %)**Examples:**
459
460 * (% style="color:#037691" %)** Set TDC**
461
462 If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
463
464 Payload:    01 00 00 1E    TDC=30S
465
466 Payload:    01 00 00 3C    TDC=60S
467
468 * (% style="color:#037691" %)** Reset**
469
470 If payload = 0x04FF, it will reset the NSPH01
471
472 * (% style="color:#037691" %)** INTMOD**
473
474 Downlink Payload: 06000003, Set AT+INTMOD=3
475
476
477 == 2.6  ​LED Indicator ==
478
479
480 The NSPH01 has an internal LED which is to show the status of different state.
481
482 * 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)
483 * Then the LED will be on for 1 second means device is boot normally.
484 * After NSPH01 join NB-IoT network. The LED will be ON for 3 seconds.
485 * For each uplink probe, LED will be on for 500ms.
486
487 == 2.7  Installation and Maintain ==
488
489 === 2.7.1  Before measurement ===
490
491
492 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. 
493
494
495 === 2.7.2  Measurement ===
496
497
498 (% style="color:#037691" %)**Measurement the soil surface:**
499
500
501 [[image:image-20220907154700-18.png]] ​
502
503 Choose the proper measuring position. Split the surface soil according to the measured deep.
504
505 Put pure water, or rainwater to make the soil of measurement point to moist mud. Remove rocks or hard things.
506
507 Slowly insert the probe to the measure point. Don't use large force which will break the probe. Make sure not shake when inserting.
508
509 Put soil over the probe after insert. And start to measure.
510
511
512 (% style="color:#037691" %)**Measurement inside soil:**
513
514 Dig a hole with diameter > 20CM.
515
516 Insert the probe inside, method like measure the surface.
517
518
519 === 2.7.3  Maintain Probe ===
520
521
522 1. pH probe electrode is fragile and no strong. User must avoid strong force or hitting it.
523 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.
524 1. Probe reference electrode is also no strong, need to avoid strong force or hitting.
525 1. User should keep reference electrode wet while not use.
526 1. Avoid the probes to touch oily matter. Which will cause issue in accuracy.
527 1. The probe is IP68 can be put in water.
528
529 == 2.8  PH and Temperature alarm function ==
530
531
532 (% style="color:#037691" %)**➢ AT Command:**
533
534 (% style="color:blue" %)**AT+ PHALARM=min,max**
535
536 ² When min=3, and max≠0, Alarm higher than max
537
538 ² When min≠0, and max=0, Alarm lower than min
539
540 ² When min≠0 and max≠0, Alarm higher than max or lower than min
541
542
543 (% style="color:blue" %)**Example:**
544
545 AT+ PHALARM =5,8  ~/~/ Alarm when PH lower than 5.
546
547 AT+ TEMPALARM=min,max
548
549 ² When min=0, and max≠0, Alarm higher than max
550
551 ² When min≠0, and max=0, Alarm lower than min
552
553 ² When min≠0 and max≠0, Alarm higher than max or lower than min
554
555
556 (% style="color:blue" %)**Example:**
557
558 AT+ TEMPALARM=20,30  ~/~/ Alarm when temperature lower than 20.
559
560
561 == 2.9  Set the number of data to be uploaded and the recording time ==
562
563
564 (% style="color:#037691" %)**➢ AT Command:**
565
566 * (% style="color:blue" %)**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)
567 * (% style="color:blue" %)**AT+NOUD=8**     (%%) ~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
568
569 The diagram below explains the relationship between TR, NOUD, and TDC more clearly**:**
570
571 [[image:image-20221009000933-1.png||height="750" width="1043"]]
572
573
574 == 2.10  Read or Clear cached data ==
575
576
577 (% style="color:#037691" %)**➢ AT Command:**
578
579 * (% style="color:blue" %)**AT+CDP**        (%%) ~/~/  Read cached data
580 * (% style="color:blue" %)**AT+CDP=0**    (%%) ~/~/  Clear cached data
581
582 [[image:image-20220907154700-19.png]]
583
584
585 == 2.11  Calibration ==
586
587
588 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).
589
590 After stable, user can use below command to calibrate.
591
592 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:515px" %)
593 |(% style="background-color:#4f81bd; color:white; width:118px" %)**pH buffer solution**|(% style="background-color:#4f81bd; color:white; width:149px" %)**AT Command to calibrate**|(% style="background-color:#4f81bd; color:white; width:149px" %)**Downlink Command**|(% style="background-color:#4f81bd; color:white; width:99px" %)**Read Cal Value**
594 |(% style="width:149px" %)4.00|(% style="width:197px" %)AT+PHCAL=4|(% style="width:206px" %)(((
595 0x13 04
596 Reply with Calibrate payload
597 )))|(% style="width:136px" %)(((
598 AT+PHCAL=?
599 Example 41,61,91
600 )))
601 |(% style="width:149px" %)6.86|(% style="width:197px" %)AT+PHCAL=6|(% style="width:206px" %)(((
602 0x13 06
603 Reply with Calibrate payload
604 )))|(% style="width:136px" %)AT+PHCAL=?
605 |(% style="width:149px" %)9.18|(% style="width:197px" %)AT+PHCAL=9|(% style="width:206px" %)(((
606 0x13 09
607 Reply with Calibrate payload
608 )))|(% style="width:136px" %)AT+PHCAL=?
609 |(% style="width:149px" %)Factory Default|(% style="width:197px" %)AT+PHCAL=15|(% style="width:206px" %)(((
610 0x13 15
611 Reply with Calibrate payload
612 )))|(% style="width:136px" %)(((
613 AT+PHCAL=?
614 Example 151
615 )))
616
617 ​
618
619
620 == 2.12  ​Firmware Change Log ==
621
622
623 Download URL & Firmware Change log: [[https:~~/~~/www.dropbox.com/sh/1tv07fro2pvjqj8/AAD-2wbfGfluTZfh38fQqdA_a?dl=0>>https://www.dropbox.com/sh/1tv07fro2pvjqj8/AAD-2wbfGfluTZfh38fQqdA_a?dl=0]]
624
625 Upgrade Instruction: [[Upgrade Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
626
627
628 == 2.13 Battery & Power Consumption ==
629
630
631 NSPH01 uses ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
632
633 [[**Battery Info & Power Consumption Analyze**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
634
635
636 = 3. ​ Access NB-IoT Module =
637
638
639 Users can directly access the AT command set of the NB-IoT module.
640
641 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/]] 
642
643
644 [[image:image-20220907154700-23.png]]
645
646 ​
647
648 = 4.  Using the AT Commands =
649
650 == 4.1  Access AT Commands ==
651
652
653 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]]
654
655 AT+<CMD>?  : Help on <CMD>
656
657 AT+<CMD>         : Run <CMD>
658
659 AT+<CMD>=<value> : Set the value
660
661 AT+<CMD>=?  : Get the value
662
663
664 (% style="color:#037691" %)**General Commands**      
665
666 AT  : Attention       
667
668 AT?  : Short Help     
669
670 ATZ  : MCU Reset    
671
672 AT+TDC  : Application Data Transmission Interval
673
674 AT+CFG  : Print all configurations
675
676 AT+CFGMOD           : Working mode selection
677
678 AT+INTMOD            : Set the trigger interrupt mode
679
680 AT+5VT  : Set extend the time of 5V power  
681
682 AT+PRO  : Choose agreement
683
684 AT+RXDL  : Extend the sending and receiving time
685
686 AT+SERVADDR  : Server Address
687
688 AT+TR      : Get or Set record time"
689
690 AT+APN     : Get or set the APN
691
692 AT+FBAND   : Get or Set whether to automatically modify the frequency band
693
694 AT+DNSCFG  : Get or Set DNS Server
695
696 AT+GETSENSORVALUE   : Returns the current sensor measurement
697
698 AT+NOUD      : Get or Set the number of data to be uploaded
699
700 AT+CDP     : Read or Clear cached data
701
702 AT+TEMPALARM      : Get or Set alarm of temp
703
704 AT+PHALARM     : Get or Set alarm of PH
705
706 AT+ PHCAL  : calibrate PH value
707
708
709 (% style="color:#037691" %)**COAP Management**      
710
711 AT+URI            : Resource parameters
712
713
714 (% style="color:#037691" %)**UDP Management**
715
716 AT+CFM          : Upload confirmation mode (only valid for UDP)
717
718
719 (% style="color:#037691" %)**MQTT Management**
720
721 AT+CLIENT               : Get or Set MQTT client
722
723 AT+UNAME  : Get or Set MQTT Username
724
725 AT+PWD                  : Get or Set MQTT password
726
727 AT+PUBTOPIC  : Get or Set MQTT publish topic
728
729 AT+SUBTOPIC  : Get or Set MQTT subscription topic
730
731
732 (% style="color:#037691" %)**Information**          
733
734 AT+FDR  : Factory Data Reset
735
736 AT+PWORD  : Serial Access Password
737
738
739 = ​5.  FAQ =
740
741 == 5.1 ​ How to Upgrade Firmware ==
742
743
744 User can upgrade the firmware for 1) bug fix, 2) new feature release.
745
746 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]]
747
748 (% style="color:red" %)**Notice, NSPH01 and LSPH01 share the same mother board. They use the same connection and method to update.**
749
750
751 == 5.2  Can I calibrate NSPH01 to different soil types? ==
752
753
754 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]].
755
756
757 = 6.  Trouble Shooting =
758
759 == 6.1  ​Connection problem when uploading firmware ==
760
761
762 **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]]
763
764
765 == 6.2  AT Command input doesn't work ==
766
767
768 In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:green" %)**ENTER** (%%)while press the send key, user need to add ENTER in their string.
769
770
771 == 6.3 Not able to connect to NB-IoT network and keep showing "Signal Strength:99". ==
772
773
774 This means sensor is trying to join the NB-IoT network but fail. Please see this link for **//[[trouble shooting for signal strenght:99>>doc:Main.CSQ\:99,99.WebHome]]//**.
775
776
777 == 6.4 Possible reasons why the device is unresponsive： ==
778
779
780 ​1. Check whether the battery voltage is lower than 2.8V
781 2. Check whether the jumper of the device is correctly connected
782
783 [[image:image-20240330174534-1.png]]
784 3. Check whether the switch here of the device is at the ISP（The switch can operate normally only when it is in RUN）
785
786 [[image:image-20240330174542-2.png]]
787 ​
788
789 = 7. ​ Order Info =
790
791
792 Part Number**:** NSPH01
793
794
795 = 8.  Packing Info =
796
797
798 **Package Includes**:
799
800 * NSPH01 NB-IoT pH Sensor x 1
801 * External antenna x 1
802
803 **Dimension and weight**:
804
805 * Device Size: cm
806 * Device Weight: g
807 * Package Size / pcs : cm
808 * Weight / pcs : g
809
810 = 9.  Support =
811
812
813 * 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.
814 * 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]]
815
816 ​

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