Last modified by Bei Jinggeng on 2025/01/10 15:51
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From version < 55.2 >
edited by Xiaoling
on 2023/08/05 08:56
To version < 74.5 >
edited by Xiaoling
on 2023/08/19 16:07
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... ... @@ -473,7 +473,6 @@
473 473  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220820120036-2.png?width=1003&height=469&rev=1.1||alt="image-20220820120036-2.png" height="469" width="1003"]]
474 474  
475 475  
476 -
477 477  ==== 2.3.2.6  MOD~=6 (Counting Mode) ====
478 478  
479 479  
... ... @@ -586,6 +586,78 @@
586 586  When AA is 2, set the count of PA4 pin to BB Corresponding downlink：09 02 bb bb bb bb
587 587  
588 588  
588 +==== 2.3.2.10  MOD~=10 (PWM input capture and output mode，Since firmware v1.2) ====
589 +
590 +
591 +In this mode, the uplink can perform PWM input capture, and the downlink can perform PWM output.
592 +
593 +[[It should be noted when using PWM mode.>>||anchor="H2.3.3.12A0PWMMOD"]]
594 +
595 +
596 +===== 2.3.2.10.a  Uplink, PWM input capture =====
597 +
598 +
599 +[[image:image-20230817172209-2.png||height="439" width="683"]]
600 +
601 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:690px" %)
602 +|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:20px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:135px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:89px" %)**2**
603 +|Value|Bat|(% style="width:191px" %)(((
604 +Temperature(DS18B20)(PC13)
605 +)))|(% style="width:78px" %)(((
606 +ADC(PA4)
607 +)))|(% style="width:135px" %)(((
608 +PWM_Setting
609 +
610 +&Digital Interrupt(PA8)
611 +)))|(% style="width:70px" %)(((
612 +Pulse period
613 +)))|(% style="width:89px" %)(((
614 +Duration of high level
615 +)))
616 +
617 +[[image:image-20230817170702-1.png||height="161" width="1044"]]
618 +
619 +
620 +When the device detects the following PWM signal ,decoder will converts the pulse period and high-level duration to frequency and duty cycle.
621 +
622 +**Frequency：**
623 +
624 +(% class="MsoNormal" %)
625 +(% 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）;
626 +
627 +(% class="MsoNormal" %)
628 +(% 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）;
629 +
630 +
631 +(% class="MsoNormal" %)
632 +**Duty cycle:**
633 +
634 +Duty cycle= Duration of high level/ Pulse period*100 ~(%).
635 +
636 +[[image:image-20230818092200-1.png||height="344" width="627"]]
637 +
638 +
639 +===== 2.3.2.10.b  Downlink, PWM output =====
640 +
641 +
642 +[[image:image-20230817173800-3.png||height="412" width="685"]]
643 +
644 +Downlink:  (% style="color:#037691" %)**0B xx xx xx yy zz zz**
645 +
646 + xx xx xx is the output frequency, the unit is HZ.
647 +
648 + yy is the duty cycle of the output, the unit is %.
649 +
650 + zz zz is the time delay of the output, the unit is ms.
651 +
652 +
653 +For example, send a downlink command: 0B 00 61 A8 32 13 88, the frequency is 25KHZ, the duty cycle is 50, and the output time is 5 seconds.
654 +
655 +The oscilloscope displays as follows:
656 +
657 +[[image:image-20230817173858-5.png||height="694" width="921"]]
658 +
659 +
589 589  === 2.3.3  ​Decode payload ===
590 590  
591 591  
... ... @@ -659,6 +659,10 @@
659 659  (% style="color:red" %)**Note: If the ADC type sensor needs to be powered by SN50_v3, it is recommended to use +5V to control its switch.Only sensors with low power consumption can be powered with VDD.**
660 660  
661 661  
733 +The position of PA5 on the hardware after **LSN50 v3.3** is changed to the position shown in the figure below, and the collected voltage becomes one-sixth of the original.
734 +
735 +[[image:image-20230811113449-1.png||height="370" width="608"]]
736 +
662 662  ==== 2.3.3.5 Digital Interrupt ====
663 663  
664 664  
... ... @@ -805,9 +805,31 @@
805 805  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628110012-12.png?rev=1.1||alt="image-20220628110012-12.png" height="361" width="953"]]
806 806  
807 807  
808 -==== 2.3.3.12  Working MOD ====
883 +==== 2.3.3.12  PWM MOD ====
809 809  
810 810  
886 +* (((
887 +The maximum voltage that the SDA pin of SN50v3 can withstand is 3.6V, and it cannot exceed this voltage value, otherwise the chip may be burned.
888 +)))
889 +* (((
890 +If the PWM pin connected to the SDA pin cannot maintain a high level when it is not working, you need to remove the resistor R2 or replace it with a resistor with a larger resistance, otherwise a sleep current of about 360uA will be generated. The position of the resistor is shown in the figure below:
891 +)))
892 +
893 + [[image:image-20230817183249-3.png||height="320" width="417"]]
894 +
895 +* (((
896 +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.
897 +)))
898 +* (((
899 +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.
900 +
901 +
902 +
903 +)))
904 +
905 +==== 2.3.3.13  Working MOD ====
906 +
907 +
811 811  The working MOD info is contained in the Digital in & Digital Interrupt byte (7^^th^^ Byte).
812 812  
813 813  User can use the 3^^rd^^ ~~ 7^^th^^  bit of this byte to see the working mod:
... ... @@ -823,6 +823,7 @@
823 823  * 6: MOD7
824 824  * 7: MOD8
825 825  * 8: MOD9
923 +* 9: MOD10
826 826  
827 827  
828 828  
... ... @@ -1068,6 +1068,35 @@
1068 1068  
1069 1069  
1070 1070  
1169 +=== 3.3.8 PWM setting ===
1170 +
1171 +
1172 +Feature: Set the time acquisition unit for PWM input capture.
1173 +
1174 +(% style="color:blue" %)**AT Command: AT+PWMSET**
1175 +
1176 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1177 +|=(% 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**
1178 +|(% style="width:154px" %)AT+PWMSET=?|(% style="width:196px" %)0|(% style="width:157px" %)(((
1179 +0(default)
1180 +
1181 +OK
1182 +)))
1183 +|(% 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" %)(((
1184 +OK
1185 +
1186 +)))
1187 +|(% 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
1188 +
1189 +(% style="color:blue" %)**Downlink Command: 0x0C**
1190 +
1191 +Format: Command Code (0x0C) followed by 1 bytes.
1192 +
1193 +* Example 1: Downlink Payload: 0C00  **~-~-->**  AT+PWMSET=0
1194 +* Example 2: Downlink Payload: 0C01  **~-~-->**  AT+PWMSET=1
1195 +
1196 +
1197 +
1071 1071  = 4. Battery & Power Consumption =
1072 1072  
1073 1073  
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1111 1111  See this document: **[[Generate PWM Output on SN50v3>>https://www.dropbox.com/scl/fi/r3trcet2knujg40w0mgyn/Generate-PWM-Output-on-SN50v3.pdf?rlkey=rxsgmrhhrv62iiiwjq9sv10bn&dl=0]]**.
1112 1112  
1113 1113  
1241 +== 6.3 How to put several sensors to a SN50v3-LB? ==
1242 +
1243 +
1244 +When we want to put several sensors to A SN50v3-LB, the waterproof at the grand connector will become an issue. User can try to exchange the grand connector to below type.
1245 +
1246 +[[Reference Supplier>>https://www.yscableglands.com/cable-glands/nylon-cable-glands/cable-gland-rubber-seal.html]].
1247 +
1248 +[[image:image-20230810121434-1.png||height="242" width="656"]]
1249 +
1250 +
1114 1114  = 7. Order Info =
1115 1115  
1116 1116  
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