Changes for page SN50v3-LB/LS -- LoRaWAN Sensor Node User Manual
Last modified by Bei Jinggeng on 2025/01/10 15:51
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... ... @@ -581,15 +581,13 @@ 581 581 582 582 ==== 2.3.2.10 MOD~=10 (PWM input capture and output mode，Since firmware v1.2) ==== 583 583 584 - 585 585 In this mode, the uplink can perform PWM input capture, and the downlink can perform PWM output. 586 586 587 -[[It should be noted when using PWM mode.>> ||anchor="H2.3.3.12A0PWMMOD"]]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]] 588 588 589 589 590 590 ===== 2.3.2.10.a Uplink, PWM input capture ===== 591 591 592 - 593 593 [[image:image-20230817172209-2.png||height="439" width="683"]] 594 594 595 595 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:690px" %) ... ... @@ -613,17 +613,16 @@ 613 613 614 614 When the device detects the following PWM signal ,decoder will converts the pulse period and high-level duration to frequency and duty cycle. 615 615 616 - **Frequency：**614 +Frequency： 617 617 618 618 (% class="MsoNormal" %) 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, 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）; 620 620 621 621 (% class="MsoNormal" %) 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, 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）; 623 623 624 - 625 625 (% class="MsoNormal" %) 626 - **Duty cycle:**623 +Duty cycle: 627 627 628 628 Duty cycle= Duration of high level/ Pulse period*100 ~(%). 629 629 ... ... @@ -632,7 +632,6 @@ 632 632 633 633 ===== 2.3.2.10.b Downlink, PWM output ===== 634 634 635 - 636 636 [[image:image-20230817173800-3.png||height="412" width="685"]] 637 637 638 638 Downlink: (% style="color:#037691" %)**0B xx xx xx yy zz zz** ... ... @@ -890,7 +890,7 @@ 890 890 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. 891 891 ))) 892 892 * ((( 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.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. 894 894 895 895 896 896 )))