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" %) ... ... @@ -611,28 +611,15 @@ 611 611 [[image:image-20230817170702-1.png||height="161" width="1044"]] 612 612 613 613 614 - Whenthe device detectshefollowingPWMsignal,decoder willconverts thepulseperiod andhigh-leveldurationto frequencyandduty cycle.612 +(% style="color:blue" %)**AT+PWMSET=AA(Default is 0) ==> Corresponding downlink: 0B AA** 615 615 616 - **Frequency:**614 +When AA is 0, the unit of PWM capture time is microsecond. The capture frequency range is between 20HZ and 100000HZ. 617 617 618 -(% 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, **(% lang="EN-US" %)Frequency= 1000000/(%%)Pulse period(HZ); 616 +When AA is 1, the unit of PWM capture time is millisecond. The capture frequency range is between 5HZ and 250HZ. 620 620 621 -(% 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, **(% lang="EN-US" %)Frequency= 1000/(%%)Pulse period(HZ); 623 623 624 - 625 -(% class="MsoNormal" %) 626 -**Duty cycle:** 627 - 628 -Duty cycle= Duration of high level/ Pulse period*100 ~(%). 629 - 630 -[[image:image-20230818092200-1.png||height="344" width="627"]] 631 - 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** ... ... @@ -890,11 +890,10 @@ 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. 894 - 895 - 878 +Since the device can only detect a pulse period of 50ms when AT+PWMSET=0 (counting in microseconds), it is necessary to change the value of PWMSET according to the frequency of input capture. 896 896 ))) 897 897 881 + 898 898 ==== 2.3.3.13 Working MOD ==== 899 899 900 900 ... ... @@ -1143,32 +1143,6 @@ 1143 1143 * Example 1: Downlink Payload: 0A01 **~-~-->** AT+MOD=1 1144 1144 * Example 2: Downlink Payload: 0A04 **~-~-->** AT+MOD=4 1145 1145 1146 -=== 3.3.8 PWM setting === 1147 - 1148 -Feature: Set the time acquisition unit for PWM input capture. 1149 - 1150 -(% style="color:blue" %)**AT Command: AT+PWMSET** 1151 - 1152 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %) 1153 -|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response** 1154 -|(% style="width:154px" %)AT+PWMSET=?|(% style="width:196px" %)0|(% style="width:157px" %)((( 1155 -0(default) 1156 - 1157 -OK 1158 -))) 1159 -|(% style="width:154px" %)AT+PWMSET=0|(% style="width:196px" %)The unit of PWM capture time is microsecond. The capture frequency range is between 20HZ and 100000HZ. |(% style="width:157px" %)((( 1160 -OK 1161 - 1162 -))) 1163 -|(% style="width:154px" %)AT+PWMSET=1|(% style="width:196px" %)The unit of PWM capture time is millisecond. The capture frequency range is between 5HZ and 250HZ. |(% style="width:157px" %)OK 1164 - 1165 -(% style="color:blue" %)**Downlink Command: 0x0C** 1166 - 1167 -Format: Command Code (0x0C) followed by 1 bytes. 1168 - 1169 -* Example 1: Downlink Payload: 0C00 **~-~-->** AT+PWMSET=0 1170 -* Example 2: Downlink Payload: 0C01 **~-~-->** AT+PWMSET=1 1171 - 1172 1172 = 4. Battery & Power Consumption = 1173 1173 1174 1174
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