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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... ... @@ -609,43 +609,13 @@ 609 609 [[image:image-20230817170702-1.png||height="161" width="1044"]] 610 610 611 611 612 - Whenthe device detectshefollowingPWMsignal,decoder willconverts thepulseperiod andhigh-leveldurationto frequencyandduty cycle.612 +(% style="color:blue" %)**AT+PWMSET=AA(Default is 0) ==> Corresponding downlink: 0B AA** 613 613 614 - Frequency:614 +When AA is 0, the unit of PWM capture time is microsecond. The capture frequency range is between 20HZ and 100000HZ. 615 615 616 -(% 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 ,** 616 +When AA is 1, the unit of PWM capture time is millisecond. The capture frequency range is between 5HZ and 250HZ. 618 618 619 -((( 620 - 621 621 622 -(% lang="EN-US" %)Frequency= 1000000/(%%)Pulse period(HZ); 623 -))) 624 - 625 -(% class="MsoNormal" %) 626 -(% 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 ,** 627 - 628 -((( 629 - 630 - 631 -(% lang="EN-US" %)Frequency= 1000/(%%)Pulse period(HZ); 632 -))) 633 - 634 -(% class="MsoNormal" %) 635 -Duty cycle: 636 - 637 -Duty cycle= Duration of high level/ Pulse period*100 ~(%). 638 - 639 - 640 - 641 -((( 642 - 643 -))) 644 - 645 - 646 -[[image:image-20230818092200-1.png||height="344" width="627"]] 647 - 648 - 649 649 ===== 2.3.2.10.b Downlink, PWM output ===== 650 650 651 651 [[image:image-20230817173800-3.png||height="412" width="685"]] ... ... @@ -905,7 +905,7 @@ 905 905 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. 906 906 ))) 907 907 * ((( 908 -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.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. 909 909 910 910 911 911 ))) ... ... @@ -1158,33 +1158,6 @@ 1158 1158 * Example 1: Downlink Payload: 0A01 **~-~-->** AT+MOD=1 1159 1159 * Example 2: Downlink Payload: 0A04 **~-~-->** AT+MOD=4 1160 1160 1161 - 1162 -=== 3.3.8 PWM setting === 1163 - 1164 -Feature: Set the time acquisition unit for PWM input capture. 1165 - 1166 -(% style="color:blue" %)**AT Command: AT+PWMSET** 1167 - 1168 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %) 1169 -|=(% 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** 1170 -|(% style="width:154px" %)AT+PWMSET=?|(% style="width:196px" %)0|(% style="width:157px" %)((( 1171 -0(default) 1172 - 1173 -OK 1174 -))) 1175 -|(% 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" %)((( 1176 -OK 1177 - 1178 -))) 1179 -|(% 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 1180 - 1181 -(% style="color:blue" %)**Downlink Command: 0x0C** 1182 - 1183 -Format: Command Code (0x0C) followed by 1 bytes. 1184 - 1185 -* Example 1: Downlink Payload: 0C00 **~-~-->** AT+PWMSET=0 1186 -* Example 2: Downlink Payload: 0C01 **~-~-->** AT+PWMSET=1 1187 - 1188 1188 = 4. Battery & Power Consumption = 1189 1189 1190 1190