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3	3	(% style="text-align:center" %)
4	4	[[image:)YK]Y_LZJIO]J2~~VA}OQJM2.png||height="442" width="410"]]
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13		-
14	14	**Table of Contents:**
15	15
16	16	{{toc/}}
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183	183
184	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	185
	176	+
186	186	[[image:image-20220912144017-1.png]]
187	187
	179	+
188	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	189
190	190
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280	280
281	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	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  .....
	275	+(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:520px" %)
	276	+|(% style="width:50px" %)**Size(bytes)**|(% style="width:40px" %)**8**|(% style="width:20px" %)**2**|(% style="width:25px" %)**2**|(% style="width:60px" %)**1**|(% style="width:20px" %)**1**|(% style="width:40px" %)**1**|(% style="width:40px" %)**2**|(% style="width:50px" %)**2**|(% style="width:50px" %)**4**|(% style="width:50px" %)**2**|(% style="width:35px" %)**2**|(% style="width:40px" %)**4**
	277	+|(% 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	286
287	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	288
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449	449
450	450	By default, NSPH01 prints the downlink payload to console port.
451	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
	444	+[[image:image-20220907154636-17.png]]
457	457
	446	+
458	458	(% style="color:blue" %)**Examples:**
459	459
460	460	* (% style="color:#037691" %)** Set TDC**
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589	589
590	590	After stable, user can use below command to calibrate.
591	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	616
617		- ​
	582	+[[image:image-20220907154700-20.png]] ​
618	618
619	619
620	620	== 2.12  ​Firmware Change Log ==