I’ve been debugging this very strange problem for the last couple days without much luck. I’ve had luck setting up both ABP and OTAA with my gateway without issue. Joins are working and uplinks as well. But no matter what I do, I can’t get downlinks to work. The gateway interface is confirming that the downlinks are sent out, but LMIC isn’t registering anything. I’m using the standard ABP sketch, and this library for my (1 channel) gateway https://github.com/things4u/ESP-1ch-Gateway.
Things I’ve tried:
- Using only a single channel on ABP
- Tried different clock errors from 10% up to 100%
- Tried downlink on both ABP and OTAA configurations
- Tried different RX windows (normally I haven’t configured these from the standard, but thought it was worth a shot)
What’s really weird to me is that joins are working, and join accept messages are being received. Does anyone have a suggestion on how to debug this?