Read nRF52840's MAC address across usb or serial tty?

[Matthew C Clark]

Is there a way to read the mac address from the serial tty of an nRF52840?  I have multiple dongles programmed with the BLE sniffer (nrf_sniffer_for_bluetooth_le_4.1.0) and am trying to map the HW ID of the device to the MAC printed on the dongle:

$ls /dev/serial/by-id/*
lrwxrwxrwx 1 root root 13 Jun 7 12:19 usb-ZEPHYR_nRF_Sniffer_for_Bluetooth_LE_5F88E7362DA8XXXX-if00 -> ../../ttyACM0

lrwxrwxrwx 1 root root 13 Jun 7 12:19 usb-ZEPHYR_nRF_Sniffer_for_Bluetooth_LE_86CA22D6DF10XXXX-if00 -> ../../ttyACM1

I don't have a JLink attached to it, so I can't use nrfjprog to read the memory and nothing under /sys/class/tty/ttyACM[0|1] shows any mac related info.    This is through an Ubuntu 20.04 machine. 

[Matthew C Clark]

Thanks, Sigurd.  That's pretty much what we've been forced to do.