Changes for page DS20L -- LoRaWAN Smart Distance Detector User Manual 01
Last modified by Mengting Qiu on 2023/12/14 11:15
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... ... @@ -759,6 +759,35 @@ 759 759 760 760 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger 761 761 762 + 763 +=== 3.3.3 Set Power Output Duration === 764 + 765 +Control the output duration 3V3 . Before each sampling, device will 766 + 767 +~1. first enable the power output to external sensor, 768 + 769 +2. keep it on as per duration, read sensor value and construct uplink payload 770 + 771 +3. final, close the power output. 772 + 773 +(% style="color:blue" %)**AT Command: AT+3V3T** 774 + 775 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %) 776 +|=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 197px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response** 777 +|(% style="width:154px" %)AT+3V3T=?|(% style="width:196px" %)Show 3V3 open time.|(% style="width:157px" %)0 (default) 778 +OK 779 +|(% style="width:154px" %)AT+3V3T=1000|(% style="width:196px" %)Close after a delay of 1000 milliseconds.|(% style="width:157px" %)OK 780 +|(% style="width:154px" %)AT+3V3T=0|(% style="width:196px" %)Always turn on the power supply of 3V3 pin.|(% style="width:157px" %)OK 781 + 782 +(% style="color:blue" %)**Downlink Command: 0x07**(%%) 783 +Format: Command Code (0x07) followed by 3 bytes. 784 + 785 +The first byte is 01,the second and third bytes are the time to turn on. 786 + 787 +* Example 1: Downlink Payload: 07 01 00 00 **~-~-->** AT+3V3T=0 788 +* Example 2: Downlink Payload: 07 01 01 F4 **~-~-->** AT+3V3T=500 789 + 790 + 762 762 = 4. Battery & Power Consumption = 763 763 764 764