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Author

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1		-XWiki.Saxer
	1	+XWiki.Xiaoling

Content

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581	581
582	582	==== 2.3.2.10  MOD~=10 (PWM input capture and output mode，Since firmware v1.2) ====
583	583
	584	+
584	584	In this mode, the uplink can perform PWM input capture, and the downlink can perform PWM output.
585	585
586		-[[It should be noted when using PWM mode.>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SN50v3-LB/#H2.3.3.12A0PWMMOD]]
	587	+[[It should be noted when using PWM mode.>>||anchor="H2.3.3.12A0PWMMOD"]]
587	587
588	588
589	589	===== 2.3.2.10.a  Uplink, PWM input capture =====
590	590
	592	+
591	591	[[image:image-20230817172209-2.png||height="439" width="683"]]
592	592
593	593	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:690px" %)
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611	611
612	612	When the device detects the following PWM signal ,decoder will converts the pulse period and high-level duration to frequency and duty cycle.
613	613
614		-Frequency：
	616	+**Frequency：**
615	615
616	616	(% class="MsoNormal" %)
617		-(% lang="EN-US" %)If (% style="background-attachment:initial; background-clip:initial; background-image:initial; background-origin:initial; background-position:initial; background-repeat:initial; background-size:initial; color:blue; font-family:Arial,sans-serif" %)**AT+PWMSET**(%%)**=0,**(% lang="EN-US" %)Frequency= 1000000/(%%)Pulse period（HZ）;
	619	+(% lang="EN-US" %)If (% style="background-attachment:initial; background-clip:initial; background-image:initial; background-origin:initial; background-position:initial; background-repeat:initial; background-size:initial; color:blue; font-family:Arial,sans-serif" %)**AT+PWMSET**(%%)**=0, **(% lang="EN-US" %)Frequency= 1000000/(%%)Pulse period（HZ）;
618	618
619	619	(% class="MsoNormal" %)
620		-(% lang="EN-US" %)If (% style="background-attachment:initial; background-clip:initial; background-image:initial; background-origin:initial; background-position:initial; background-repeat:initial; background-size:initial; color:blue; font-family:Arial,sans-serif" %)**AT+PWMSET**(%%)**=1,**(% lang="EN-US" %)Frequency= 1000/(%%)Pulse period（HZ）;
	622	+(% lang="EN-US" %)If (% style="background-attachment:initial; background-clip:initial; background-image:initial; background-origin:initial; background-position:initial; background-repeat:initial; background-size:initial; color:blue; font-family:Arial,sans-serif" %)**AT+PWMSET**(%%)**=1, **(% lang="EN-US" %)Frequency= 1000/(%%)Pulse period（HZ）;
621	621
	624	+
622	622	(% class="MsoNormal" %)
623		-Duty cycle:
	626	+**Duty cycle:**
624	624
625	625	Duty cycle= Duration of high level/ Pulse period*100 ~(%).
626	626
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629	629
630	630	===== 2.3.2.10.b  Downlink, PWM output =====
631	631
	635	+
632	632	[[image:image-20230817173800-3.png||height="412" width="685"]]
633	633
634	634	Downlink:  (% style="color:#037691" %)**0B xx xx xx yy zz zz**
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886	886	The signal captured by the input should preferably be processed by hardware filtering and then connected in. The software processing method is to capture four values, discard the first captured value, and then take the middle value of the second, third, and fourth captured values.
887	887	)))
888	888	* (((
889		-Since the device can only detect a pulse period of 50ms when [[AT+PWMSET=0>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SN50v3-LB/#H3.3.8PWMsetting]] (counting in microseconds), it is necessary to change the value of PWMSET according to the frequency of input capture.
	893	+Since the device can only detect a pulse period of 50ms when [[AT+PWMSET=0>>||anchor="H3.3.8PWMsetting"]] (counting in microseconds), it is necessary to change the value of PWMSET according to the frequency of input capture.
890	890
891	891
892	892	)))