I have a question about how to change the header of a LoRaWAN packet.
The upper 3 bits of "MHDR" in the packet header indicate the message type. If bit # 7, 6, 5 is set to "101", it will be "Downlink Confirmed Data".
I want to change the upper 3 bits of "MHDR" to "101" when sending downlink data via the route of MQTT-> Network server-> Gateway. How should I do?
Could you give me some advice?