I've been battling with a problem for a week with 2 xbee 868 radios. I have 1 set as coordinator and one set to either a normal node or end device (same result either way). Both are set in API mode 1. I have them connected to 2 computers in 2 rooms both with X-CTU.
The problem is that I can build a TX request packet and send it from the node to the coordinator with no problems, but I can't transmit the other way - the message fails with 0x75 'Indirect message unrequested' and I have no idea what that means.
I have gone back to AT mode, done a range test and a 2-way AT mode chat with no problems as a test.
The packets I am building contain:
Transmit to coordinator (works):
7e 00 10 10 01 00 13 a2 00 40 94 5b b1 ff fe 00 00 41 42 43 44 52
Transmit to node (fails):
7e 00 10 10 01 00 13 a2 00 40 a2 6e 56 ff fe 00 00 41 42 43 44 8c
The status packet contains:
7e 00 07 8b 01 ff fe 03 75 00 fe
0x75 status is 'Indirect message unrequested'. I don't even understand what that means.
Any help appreciated. I've spent days on this. I'm using firmware XBP08-DP, XBEE-PRO 868 SINGLE CHANNEL, 1061.