XBee3 MicroPython: is transmit() blocking or nonblocking?

XBee3 MicroPython: is transmit() blocking or nonblocking?..

im using transmit() in my micropython upload to transmit to the coordinator who is attached to the PC / Python main program.

thanks

It is blocking currently.

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is there an option in micropython to send that is not blocking? for the xbee 3 zigbee