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Last modified by Xiaoling on 2023/12/27 09:15
From version 115.1
edited by Bei Jinggeng
on 2022/11/15 14:38
Change comment: There is no comment for this version
To version 123.1
edited by Edwin Chen
on 2022/11/16 15:30
Change comment: There is no comment for this version

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1187 1187  [[image:image-20221102140801-6.png]]
1188 1188  
1189 1189  
1190 +== 7.4 How to modify source code to compile different frequency band bin file? ==
1190 1190  
1192 +1.When compiling the frequency band, you need to find LMIC_PROJECT_CONFIG.H file.
1193 +
1194 +[[image:image-20221116111844-1.png||height="227" width="782"]]
1195 +
1196 +2.Open LMIC_PROJECT_CONFIG.H, find the corresponding macro definition and open it(AS923_2,AS923_3,AS923_4 except).
1197 +
1198 +[[image:image-20221116111844-2.png||height="262" width="781"]]
1199 +
1200 +3.Compile the AS923_JP band, please refer to the intention shown
1201 +
1202 +[[image:image-20221116111844-3.png||height="338" width="746"]]
1203 +
1204 +4.In other frequency bands in AS923, you need to find Lorabase_as923.H, path arduino-lmic \ src \ lmic, as shown in the figure below.
1205 +
1206 +[[image:image-20221116111844-4.png||height="641" width="739"]]
1207 +
1208 +[[image:image-20221116111844-5.png||height="551" width="708"]]
1209 +
1210 +
1211 +
1191 1191  = 8  Trouble Shooting =
1192 1192  
1193 1193  
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1225 1225  It is because the partitions are different when upgrading versions above 1.4.1, and a new partition file needs to be added. Please refer to the operation steps in chapter 8.3.
1226 1226  
1227 1227  
1249 +(((
1250 +== 8.5 How to deal with unsuccessful GPS positioning? ==
1251 +
1252 +1） Make Sure the device is in Open Area where can see the sky. 
1253 +2)  Set PDOP to a higher value.
1254 +
1255 +Please refer to this [[link>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/TrackerD/#H3.2.9SetPDOPvalueforGPSfixaccuracy]] on how to set up PDOP
1256 +)))
1257 +
1258 +
1259 +== 8.6 When positioning, it will restart or the PDOP setting is unsuccessful ==
1260 +
1261 +Please download version 1.4.2 again
1262 +
1263 +
1228 1228  = 9.  Order Info =
1229 1229  
1230 1230  
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