I use MCUXpresso IDE v10.1.1_606 and import the example(thread_low_power_end_device).
I changed the macro definition THREAD_USE_SHELL in the file config.h to 1.
Then I type the command ‘thr join’ in the shell, but it prints out ‘join failed’.
I uploaded two sniffing messages, one was successfully added and the other was added by the example.