Zigbee Transmission Control

[tabytabtab]

Hello all,

I have a bit of a weird problem I've been struggling with and am wondering if anyone has run into this before, or if there's even a way to accomplish this:

I am working on C6-based device which uses the esp zigbee sdk to behave as a zigbee device, reporting data recorded from another sensor. Due to FCC certification limitations, I need to prevent the onboard radio from operating at the same time as the off-board sensor takes measurements. The problem is I can't find any way to control when (or even just determine if) the zigbee radio is transmitting.

I have tried suspending the zigbee task, but this doesn't stop the stack from operating since the internal scheduler I believe is based on timers, which I don't have the handles of
I've tried using the lower level zb_mac_disable_interface command, but that causes a crash for reasons I can't determine
I've tried to use zigbee sleep, but for whatever reason the way I have things setup it never goes into sleep
There don't seem to be any commands to temporarily pause the zigbee scheduler
The documentation surrounding the 802.15.4 PHY/MAC... doesn't exist as far as I can tell, so I can't like check the transmit buffer or anything

Any thoughts?