I’ve been searching around and digging through the example project files for the STM32 Discovery kit and have been completely unsuccessful in getting the device to connect to TTN here in the US on 915 Hybrid using the End_Node example. The gateway and network sever are all operating correctly as we have serval hundred nodes running w/o issue.
I had no issue getting the device connected on Loriot network just by enabling the ‘REGION_US915_HYBRID’ variable in the project, so I can logically conclude that this is related to the TTN use of SubBand 1 Channels 8-15 (903.9 - 905.3) by default on the gateways running on 915 Hybrid. Loriot defaults to SubBand 0 as do most of the other network servers for the US.
So my question is for those that are familiar with the example code for this kit, how do you configure the project to use by default the same settings of TTN gateways for SubBand 1 Channels 8-15? Has anyone been successful in using this kit in the US on TTN? I have seen the Arduino libraries for this board, but for the time being I am trying to stick the I-CUBE LRWAN project files and libraries.
Lastly, I am not an experienced hardware engineer but I am happy to learn so if there are resources that better document and explain the use of the SubBands for the SX1276 for developers please feel free to link to those resource. Thanks in advance!