Changes for page How to set a fix DR / Spreading Factor or Output Power
Last modified by Xiaoling on 2023/04/19 17:42
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... ... @@ -2,7 +2,7 @@ 2 2 {{toc/}} 3 3 {{/box}} 4 4 5 -= Paragraph1=5 += Introduction = 6 6 7 7 Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. 8 8 ... ... @@ -19,14 +19,21 @@ 19 19 Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. 20 20 21 21 22 -= Paragraph2=22 += How to set a fix DR = 23 23 24 - Loremipsum dolor sit amet, consecteturadipiscing elit, sed doeiusmodtempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitationullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.24 += Introduction = 25 25 26 - ==Sub-paragraph==26 +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>>url:https://wiki.dragino.com/index.php/End_Device_AT_Commands_and_Downlink_Commands]] 27 27 28 - Loremipsumdolorsitmet,consecteturadipiscingelit,seddo eiusmod temporincididuntut laboreetdoloremagna aliqua. Utenimadminim veniam,quisnostrudexercitationullamcolaboris nisiutquip ex eammodoconsequat. Duisaute iruredolorinprehenderit in voluptatelitessecillumdoloreeu fugiatnullapariatur.Excepteursintoccaecatcupidatatnonproident,suntinculpa qui officia deseruntmollitanim idestlaborum.28 +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. 29 29 30 -== Sub-paragraph == 31 31 32 -Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. 31 +In our STM32 base LoRaWAN end node, user can use below command to change set fix DR. 32 + 33 +{{{AT+ADR=0 //Disable ADR so server won't be able to change the DR on the sensor 34 +AT+DR=0 // Set the DR to the required DataRate. 35 +AT+TXP=50 // Manually set to highest power to 20dB. ( manually bypass 14dB limit in EU868 frequency) 36 +}}} 37 + 38 + 39 +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]]