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From version < 1.4 >
edited by Xiaoling
on 2022/05/12 08:58
To version < 1.5 >
edited by Xiaoling
on 2022/05/12 08:59
>
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5 5  User might want to set Fix DR or Spreading Factor to get the maximum distance. This can be down via AT Command, Or Downlink Command (in case the device is of the latest Dragino LoRaWAN stack as specify here:[[ End Device AT or Downlink Command>>http://8.211.40.43:8080/xwiki/bin/view/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
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7 7  The mapping for DataRate and Spreading Factor are different for each frequency band. User can refer the [[LoRaWAN regional parameter>>url:https://lora-alliance.org/wp-content/uploads/2020/11/lorawan_regional_parameters_v1.0.3reva_0.pdf]] to see how the map. For exampl, look at page 22, we can know that the DR0 for US915 band is SF10,125Khz.
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10 10  In our STM32 base LoRaWAN end node, user can use below command to change set fix DR.
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12 12  (% class="box infomessage" %)
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17 17  )))
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20 20  For AS923 frequency band, the uplinkdwelltime will effect the setting of DR. Please see this link for more: [[AS923 UplinkDwellTime>>url:https://wiki.dragino.com/index.php/Set_uplinkdwell_time]]
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