I need time with my RAK7258 and tried to connect a GPS module to ttyS1, using UART1 of RAK634 computing module (pins B14/B15)and GPS PPS input (pin 19) of RAK2254 Lora module.
I had this up and running for a while, and saw UTC time in gateway’s metadata sent to the LoRa server, but it seems for some reason the configuration is not stable. Will retry with original U-Blox 7 module, since the semtech packet forwarder is using UBX protocol to get timestamps from GPS.
Can anyone here confirm, that UART1 of RAK634 is mapped to /dev/ttyS1 on the RAK7258 and the interface is usable (i.e. activated in kernel)?